webpackJsonp([2],{"++K3":function(module,exports){eval("/**\n * Copyright 2004-present Facebook. All Rights Reserved.\n *\n * @providesModule UserAgent_DEPRECATED\n */\n\n/**\n * Provides entirely client-side User Agent and OS detection. You should prefer\n * the non-deprecated UserAgent module when possible, which exposes our\n * authoritative server-side PHP-based detection to the client.\n *\n * Usage is straightforward:\n *\n * if (UserAgent_DEPRECATED.ie()) {\n * // IE\n * }\n *\n * You can also do version checks:\n *\n * if (UserAgent_DEPRECATED.ie() >= 7) {\n * // IE7 or better\n * }\n *\n * The browser functions will return NaN if the browser does not match, so\n * you can also do version compares the other way:\n *\n * if (UserAgent_DEPRECATED.ie() < 7) {\n * // IE6 or worse\n * }\n *\n * Note that the version is a float and may include a minor version number,\n * so you should always use range operators to perform comparisons, not\n * strict equality.\n *\n * **Note:** You should **strongly** prefer capability detection to browser\n * version detection where it's reasonable:\n *\n * http://www.quirksmode.org/js/support.html\n *\n * Further, we have a large number of mature wrapper functions and classes\n * which abstract away many browser irregularities. Check the documentation,\n * grep for things, or ask on javascript@lists.facebook.com before writing yet\n * another copy of \"event || window.event\".\n *\n */\n\nvar _populated = false;\n\n// Browsers\nvar _ie, _firefox, _opera, _webkit, _chrome;\n\n// Actual IE browser for compatibility mode\nvar _ie_real_version;\n\n// Platforms\nvar _osx, _windows, _linux, _android;\n\n// Architectures\nvar _win64;\n\n// Devices\nvar _iphone, _ipad, _native;\n\nvar _mobile;\n\nfunction _populate() {\n if (_populated) {\n return;\n }\n\n _populated = true;\n\n // To work around buggy JS libraries that can't handle multi-digit\n // version numbers, Opera 10's user agent string claims it's Opera\n // 9, then later includes a Version/X.Y field:\n //\n // Opera/9.80 (foo) Presto/2.2.15 Version/10.10\n var uas = navigator.userAgent;\n var agent = /(?:MSIE.(\\d+\\.\\d+))|(?:(?:Firefox|GranParadiso|Iceweasel).(\\d+\\.\\d+))|(?:Opera(?:.+Version.|.)(\\d+\\.\\d+))|(?:AppleWebKit.(\\d+(?:\\.\\d+)?))|(?:Trident\\/\\d+\\.\\d+.*rv:(\\d+\\.\\d+))/.exec(uas);\n var os = /(Mac OS X)|(Windows)|(Linux)/.exec(uas);\n\n _iphone = /\\b(iPhone|iP[ao]d)/.exec(uas);\n _ipad = /\\b(iP[ao]d)/.exec(uas);\n _android = /Android/i.exec(uas);\n _native = /FBAN\\/\\w+;/i.exec(uas);\n _mobile = /Mobile/i.exec(uas);\n\n // Note that the IE team blog would have you believe you should be checking\n // for 'Win64; x64'. But MSDN then reveals that you can actually be coming\n // from either x64 or ia64; so ultimately, you should just check for Win64\n // as in indicator of whether you're in 64-bit IE. 32-bit IE on 64-bit\n // Windows will send 'WOW64' instead.\n _win64 = !!(/Win64/.exec(uas));\n\n if (agent) {\n _ie = agent[1] ? parseFloat(agent[1]) : (\n agent[5] ? parseFloat(agent[5]) : NaN);\n // IE compatibility mode\n if (_ie && document && document.documentMode) {\n _ie = document.documentMode;\n }\n // grab the \"true\" ie version from the trident token if available\n var trident = /(?:Trident\\/(\\d+.\\d+))/.exec(uas);\n _ie_real_version = trident ? parseFloat(trident[1]) + 4 : _ie;\n\n _firefox = agent[2] ? parseFloat(agent[2]) : NaN;\n _opera = agent[3] ? parseFloat(agent[3]) : NaN;\n _webkit = agent[4] ? parseFloat(agent[4]) : NaN;\n if (_webkit) {\n // We do not add the regexp to the above test, because it will always\n // match 'safari' only since 'AppleWebKit' appears before 'Chrome' in\n // the userAgent string.\n agent = /(?:Chrome\\/(\\d+\\.\\d+))/.exec(uas);\n _chrome = agent && agent[1] ? parseFloat(agent[1]) : NaN;\n } else {\n _chrome = NaN;\n }\n } else {\n _ie = _firefox = _opera = _chrome = _webkit = NaN;\n }\n\n if (os) {\n if (os[1]) {\n // Detect OS X version. If no version number matches, set _osx to true.\n // Version examples: 10, 10_6_1, 10.7\n // Parses version number as a float, taking only first two sets of\n // digits. If only one set of digits is found, returns just the major\n // version number.\n var ver = /(?:Mac OS X (\\d+(?:[._]\\d+)?))/.exec(uas);\n\n _osx = ver ? parseFloat(ver[1].replace('_', '.')) : true;\n } else {\n _osx = false;\n }\n _windows = !!os[2];\n _linux = !!os[3];\n } else {\n _osx = _windows = _linux = false;\n }\n}\n\nvar UserAgent_DEPRECATED = {\n\n /**\n * Check if the UA is Internet Explorer.\n *\n *\n * @return float|NaN Version number (if match) or NaN.\n */\n ie: function() {\n return _populate() || _ie;\n },\n\n /**\n * Check if we're in Internet Explorer compatibility mode.\n *\n * @return bool true if in compatibility mode, false if\n * not compatibility mode or not ie\n */\n ieCompatibilityMode: function() {\n return _populate() || (_ie_real_version > _ie);\n },\n\n\n /**\n * Whether the browser is 64-bit IE. Really, this is kind of weak sauce; we\n * only need this because Skype can't handle 64-bit IE yet. We need to remove\n * this when we don't need it -- tracked by #601957.\n */\n ie64: function() {\n return UserAgent_DEPRECATED.ie() && _win64;\n },\n\n /**\n * Check if the UA is Firefox.\n *\n *\n * @return float|NaN Version number (if match) or NaN.\n */\n firefox: function() {\n return _populate() || _firefox;\n },\n\n\n /**\n * Check if the UA is Opera.\n *\n *\n * @return float|NaN Version number (if match) or NaN.\n */\n opera: function() {\n return _populate() || _opera;\n },\n\n\n /**\n * Check if the UA is WebKit.\n *\n *\n * @return float|NaN Version number (if match) or NaN.\n */\n webkit: function() {\n return _populate() || _webkit;\n },\n\n /**\n * For Push\n * WILL BE REMOVED VERY SOON. Use UserAgent_DEPRECATED.webkit\n */\n safari: function() {\n return UserAgent_DEPRECATED.webkit();\n },\n\n /**\n * Check if the UA is a Chrome browser.\n *\n *\n * @return float|NaN Version number (if match) or NaN.\n */\n chrome : function() {\n return _populate() || _chrome;\n },\n\n\n /**\n * Check if the user is running Windows.\n *\n * @return bool `true' if the user's OS is Windows.\n */\n windows: function() {\n return _populate() || _windows;\n },\n\n\n /**\n * Check if the user is running Mac OS X.\n *\n * @return float|bool Returns a float if a version number is detected,\n * otherwise true/false.\n */\n osx: function() {\n return _populate() || _osx;\n },\n\n /**\n * Check if the user is running Linux.\n *\n * @return bool `true' if the user's OS is some flavor of Linux.\n */\n linux: function() {\n return _populate() || _linux;\n },\n\n /**\n * Check if the user is running on an iPhone or iPod platform.\n *\n * @return bool `true' if the user is running some flavor of the\n * iPhone OS.\n */\n iphone: function() {\n return _populate() || _iphone;\n },\n\n mobile: function() {\n return _populate() || (_iphone || _ipad || _android || _mobile);\n },\n\n nativeApp: function() {\n // webviews inside of the native apps\n return _populate() || _native;\n },\n\n android: function() {\n return _populate() || _android;\n },\n\n ipad: function() {\n return _populate() || _ipad;\n }\n};\n\nmodule.exports = UserAgent_DEPRECATED;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"++K3.js","sources":["webpack:///./node_modules/normalize-wheel/src/UserAgent_DEPRECATED.js?fbe2"],"sourcesContent":["/**\n * Copyright 2004-present Facebook. All Rights Reserved.\n *\n * @providesModule UserAgent_DEPRECATED\n */\n\n/**\n *  Provides entirely client-side User Agent and OS detection. You should prefer\n *  the non-deprecated UserAgent module when possible, which exposes our\n *  authoritative server-side PHP-based detection to the client.\n *\n *  Usage is straightforward:\n *\n *    if (UserAgent_DEPRECATED.ie()) {\n *      //  IE\n *    }\n *\n *  You can also do version checks:\n *\n *    if (UserAgent_DEPRECATED.ie() >= 7) {\n *      //  IE7 or better\n *    }\n *\n *  The browser functions will return NaN if the browser does not match, so\n *  you can also do version compares the other way:\n *\n *    if (UserAgent_DEPRECATED.ie() < 7) {\n *      //  IE6 or worse\n *    }\n *\n *  Note that the version is a float and may include a minor version number,\n *  so you should always use range operators to perform comparisons, not\n *  strict equality.\n *\n *  **Note:** You should **strongly** prefer capability detection to browser\n *  version detection where it's reasonable:\n *\n *    http://www.quirksmode.org/js/support.html\n *\n *  Further, we have a large number of mature wrapper functions and classes\n *  which abstract away many browser irregularities. Check the documentation,\n *  grep for things, or ask on javascript@lists.facebook.com before writing yet\n *  another copy of \"event || window.event\".\n *\n */\n\nvar _populated = false;\n\n// Browsers\nvar _ie, _firefox, _opera, _webkit, _chrome;\n\n// Actual IE browser for compatibility mode\nvar _ie_real_version;\n\n// Platforms\nvar _osx, _windows, _linux, _android;\n\n// Architectures\nvar _win64;\n\n// Devices\nvar _iphone, _ipad, _native;\n\nvar _mobile;\n\nfunction _populate() {\n  if (_populated) {\n    return;\n  }\n\n  _populated = true;\n\n  // To work around buggy JS libraries that can't handle multi-digit\n  // version numbers, Opera 10's user agent string claims it's Opera\n  // 9, then later includes a Version/X.Y field:\n  //\n  // Opera/9.80 (foo) Presto/2.2.15 Version/10.10\n  var uas = navigator.userAgent;\n  var agent = /(?:MSIE.(\\d+\\.\\d+))|(?:(?:Firefox|GranParadiso|Iceweasel).(\\d+\\.\\d+))|(?:Opera(?:.+Version.|.)(\\d+\\.\\d+))|(?:AppleWebKit.(\\d+(?:\\.\\d+)?))|(?:Trident\\/\\d+\\.\\d+.*rv:(\\d+\\.\\d+))/.exec(uas);\n  var os    = /(Mac OS X)|(Windows)|(Linux)/.exec(uas);\n\n  _iphone = /\\b(iPhone|iP[ao]d)/.exec(uas);\n  _ipad = /\\b(iP[ao]d)/.exec(uas);\n  _android = /Android/i.exec(uas);\n  _native = /FBAN\\/\\w+;/i.exec(uas);\n  _mobile = /Mobile/i.exec(uas);\n\n  // Note that the IE team blog would have you believe you should be checking\n  // for 'Win64; x64'.  But MSDN then reveals that you can actually be coming\n  // from either x64 or ia64;  so ultimately, you should just check for Win64\n  // as in indicator of whether you're in 64-bit IE.  32-bit IE on 64-bit\n  // Windows will send 'WOW64' instead.\n  _win64 = !!(/Win64/.exec(uas));\n\n  if (agent) {\n    _ie = agent[1] ? parseFloat(agent[1]) : (\n          agent[5] ? parseFloat(agent[5]) : NaN);\n    // IE compatibility mode\n    if (_ie && document && document.documentMode) {\n      _ie = document.documentMode;\n    }\n    // grab the \"true\" ie version from the trident token if available\n    var trident = /(?:Trident\\/(\\d+.\\d+))/.exec(uas);\n    _ie_real_version = trident ? parseFloat(trident[1]) + 4 : _ie;\n\n    _firefox = agent[2] ? parseFloat(agent[2]) : NaN;\n    _opera   = agent[3] ? parseFloat(agent[3]) : NaN;\n    _webkit  = agent[4] ? parseFloat(agent[4]) : NaN;\n    if (_webkit) {\n      // We do not add the regexp to the above test, because it will always\n      // match 'safari' only since 'AppleWebKit' appears before 'Chrome' in\n      // the userAgent string.\n      agent = /(?:Chrome\\/(\\d+\\.\\d+))/.exec(uas);\n      _chrome = agent && agent[1] ? parseFloat(agent[1]) : NaN;\n    } else {\n      _chrome = NaN;\n    }\n  } else {\n    _ie = _firefox = _opera = _chrome = _webkit = NaN;\n  }\n\n  if (os) {\n    if (os[1]) {\n      // Detect OS X version.  If no version number matches, set _osx to true.\n      // Version examples:  10, 10_6_1, 10.7\n      // Parses version number as a float, taking only first two sets of\n      // digits.  If only one set of digits is found, returns just the major\n      // version number.\n      var ver = /(?:Mac OS X (\\d+(?:[._]\\d+)?))/.exec(uas);\n\n      _osx = ver ? parseFloat(ver[1].replace('_', '.')) : true;\n    } else {\n      _osx = false;\n    }\n    _windows = !!os[2];\n    _linux   = !!os[3];\n  } else {\n    _osx = _windows = _linux = false;\n  }\n}\n\nvar UserAgent_DEPRECATED = {\n\n  /**\n   *  Check if the UA is Internet Explorer.\n   *\n   *\n   *  @return float|NaN Version number (if match) or NaN.\n   */\n  ie: function() {\n    return _populate() || _ie;\n  },\n\n  /**\n   * Check if we're in Internet Explorer compatibility mode.\n   *\n   * @return bool true if in compatibility mode, false if\n   * not compatibility mode or not ie\n   */\n  ieCompatibilityMode: function() {\n    return _populate() || (_ie_real_version > _ie);\n  },\n\n\n  /**\n   * Whether the browser is 64-bit IE.  Really, this is kind of weak sauce;  we\n   * only need this because Skype can't handle 64-bit IE yet.  We need to remove\n   * this when we don't need it -- tracked by #601957.\n   */\n  ie64: function() {\n    return UserAgent_DEPRECATED.ie() && _win64;\n  },\n\n  /**\n   *  Check if the UA is Firefox.\n   *\n   *\n   *  @return float|NaN Version number (if match) or NaN.\n   */\n  firefox: function() {\n    return _populate() || _firefox;\n  },\n\n\n  /**\n   *  Check if the UA is Opera.\n   *\n   *\n   *  @return float|NaN Version number (if match) or NaN.\n   */\n  opera: function() {\n    return _populate() || _opera;\n  },\n\n\n  /**\n   *  Check if the UA is WebKit.\n   *\n   *\n   *  @return float|NaN Version number (if match) or NaN.\n   */\n  webkit: function() {\n    return _populate() || _webkit;\n  },\n\n  /**\n   *  For Push\n   *  WILL BE REMOVED VERY SOON. 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you can redistribute it and/or\n * modify it under the terms of the GNU Lesser General Public\n * License as published by the Free Software Foundation; either\n * version 2 of the License, or (at your option) any later version.\n *\n * This library is distributed in the hope that it will be useful,\n * but WITHOUT ANY WARRANTY; without even the implied warranty of\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\t See the GNU\n * Library General Public License for more details.\n *\n * You should have received a copy of the GNU Lesser General Public\n * License along with this library; if not, write to the\n * Free Software Foundation, Inc., 59 Temple Place - Suite 330,\n * Boston, MA 02111-1307, USA.\n */\n\n/* $Id: Takehiro.java,v 1.26 2011/05/24 20:48:06 kenchis Exp $ */\n\n//package mp3;\n\n//import java.util.Arrays;\nvar common = __webpack_require__("Dkd2");\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\nvar Encoder = __webpack_require__("E2dQ");\nvar Tables = __webpack_require__("Nk+c");\nvar GrInfo = __webpack_require__("PrPO");\nvar QuantizePVT = __webpack_require__("GZKO");\n\n\nfunction Takehiro() {\n\n var qupvt = null;\n this.qupvt = null;\n\n this.setModules = function (_qupvt) {\n this.qupvt = _qupvt;\n qupvt = _qupvt;\n }\n\n function Bits(b) {\n this.bits = 0 | b;\n }\n\n var subdv_table = [[0, 0], /* 0 bands */\n [0, 0], /* 1 bands */\n [0, 0], /* 2 bands */\n [0, 0], /* 3 bands */\n [0, 0], /* 4 bands */\n [0, 1], /* 5 bands */\n [1, 1], /* 6 bands */\n [1, 1], /* 7 bands */\n [1, 2], /* 8 bands */\n [2, 2], /* 9 bands */\n [2, 3], /* 10 bands */\n [2, 3], /* 11 bands */\n [3, 4], /* 12 bands */\n [3, 4], /* 13 bands */\n [3, 4], /* 14 bands */\n [4, 5], /* 15 bands */\n [4, 5], /* 16 bands */\n [4, 6], /* 17 bands */\n [5, 6], /* 18 bands */\n [5, 6], /* 19 bands */\n [5, 7], /* 20 bands */\n [6, 7], /* 21 bands */\n [6, 7], /* 22 bands */\n ];\n\n /**\n * nonlinear quantization of xr More accurate formula than the ISO formula.\n * Takes into account the fact that we are quantizing xr . ix, but we want\n * ix^4/3 to be as close as possible to x^4/3. (taking the nearest int would\n * mean ix is as close as possible to xr, which is different.)\n *\n * From Segher Boessenkool 11/1999\n *\n * 09/2000: ASM code removed in favor of IEEE754 hack by Takehiro Tominaga.\n * If you need the ASM code, check CVS circa Aug 2000.\n *\n * 01/2004: Optimizations by Gabriel Bouvigne\n */\n function quantize_lines_xrpow_01(l, istep, xr, xrPos, ix, ixPos) {\n var compareval0 = (1.0 - 0.4054) / istep;\n\n assert(l > 0);\n l = l >> 1;\n while ((l--) != 0) {\n ix[ixPos++] = (compareval0 > xr[xrPos++]) ? 0 : 1;\n ix[ixPos++] = (compareval0 > xr[xrPos++]) ? 0 : 1;\n }\n }\n\n /**\n * XRPOW_FTOI is a macro to convert floats to ints.
\n * if XRPOW_FTOI(x) = nearest_int(x), then QUANTFAC(x)=adj43asm[x]
\n * ROUNDFAC= -0.0946
\n *\n * if XRPOW_FTOI(x) = floor(x), then QUANTFAC(x)=asj43[x]
\n * ROUNDFAC=0.4054
\n *\n * Note: using floor() or 0| is extremely slow. On machines where the\n * TAKEHIRO_IEEE754_HACK code above does not work, it is worthwile to write\n * some ASM for XRPOW_FTOI().\n */\n function quantize_lines_xrpow(l, istep, xr, xrPos, ix, ixPos) {\n assert(l > 0);\n\n l = l >> 1;\n var remaining = l % 2;\n l = l >> 1;\n while (l-- != 0) {\n var x0, x1, x2, x3;\n var rx0, rx1, rx2, rx3;\n\n x0 = xr[xrPos++] * istep;\n x1 = xr[xrPos++] * istep;\n rx0 = 0 | x0;\n x2 = xr[xrPos++] * istep;\n rx1 = 0 | x1;\n x3 = xr[xrPos++] * istep;\n rx2 = 0 | x2;\n x0 += qupvt.adj43[rx0];\n rx3 = 0 | x3;\n x1 += qupvt.adj43[rx1];\n ix[ixPos++] = 0 | x0;\n x2 += qupvt.adj43[rx2];\n ix[ixPos++] = 0 | x1;\n x3 += qupvt.adj43[rx3];\n ix[ixPos++] = 0 | x2;\n ix[ixPos++] = 0 | x3;\n }\n if (remaining != 0) {\n var x0, x1;\n var rx0, rx1;\n\n x0 = xr[xrPos++] * istep;\n x1 = xr[xrPos++] * istep;\n rx0 = 0 | x0;\n rx1 = 0 | x1;\n x0 += qupvt.adj43[rx0];\n x1 += qupvt.adj43[rx1];\n ix[ixPos++] = 0 | x0;\n ix[ixPos++] = 0 | x1;\n }\n }\n\n /**\n * Quantization function This function will select which lines to quantize\n * and call the proper quantization function\n */\n function quantize_xrpow(xp, pi, istep, codInfo, prevNoise) {\n /* quantize on xr^(3/4) instead of xr */\n var sfb;\n var sfbmax;\n var j = 0;\n var prev_data_use;\n var accumulate = 0;\n var accumulate01 = 0;\n var xpPos = 0;\n var iData = pi;\n var iDataPos = 0;\n var acc_iData = iData;\n var acc_iDataPos = 0;\n var acc_xp = xp;\n var acc_xpPos = 0;\n\n /*\n * Reusing previously computed data does not seems to work if global\n * gain is changed. Finding why it behaves this way would allow to use a\n * cache of previously computed values (let\'s 10 cached values per sfb)\n * that would probably provide a noticeable speedup\n */\n prev_data_use = (prevNoise != null && (codInfo.global_gain == prevNoise.global_gain));\n\n if (codInfo.block_type == Encoder.SHORT_TYPE)\n sfbmax = 38;\n else\n sfbmax = 21;\n\n for (sfb = 0; sfb <= sfbmax; sfb++) {\n var step = -1;\n\n if (prev_data_use || codInfo.block_type == Encoder.NORM_TYPE) {\n step = codInfo.global_gain\n - ((codInfo.scalefac[sfb] + (codInfo.preflag != 0 ? qupvt.pretab[sfb]\n : 0)) << (codInfo.scalefac_scale + 1))\n - codInfo.subblock_gain[codInfo.window[sfb]] * 8;\n }\n assert(codInfo.width[sfb] >= 0);\n if (prev_data_use && (prevNoise.step[sfb] == step)) {\n /*\n * do not recompute this part, but compute accumulated lines\n */\n if (accumulate != 0) {\n quantize_lines_xrpow(accumulate, istep, acc_xp, acc_xpPos,\n acc_iData, acc_iDataPos);\n accumulate = 0;\n }\n if (accumulate01 != 0) {\n quantize_lines_xrpow_01(accumulate01, istep, acc_xp,\n acc_xpPos, acc_iData, acc_iDataPos);\n accumulate01 = 0;\n }\n } else { /* should compute this part */\n var l = codInfo.width[sfb];\n\n if ((j + codInfo.width[sfb]) > codInfo.max_nonzero_coeff) {\n /* do not compute upper zero part */\n var usefullsize;\n usefullsize = codInfo.max_nonzero_coeff - j + 1;\n Arrays.fill(pi, codInfo.max_nonzero_coeff, 576, 0);\n l = usefullsize;\n\n if (l < 0) {\n l = 0;\n }\n\n /* no need to compute higher sfb values */\n sfb = sfbmax + 1;\n }\n\n /* accumulate lines to quantize */\n if (0 == accumulate && 0 == accumulate01) {\n acc_iData = iData;\n acc_iDataPos = iDataPos;\n acc_xp = xp;\n acc_xpPos = xpPos;\n }\n if (prevNoise != null && prevNoise.sfb_count1 > 0\n && sfb >= prevNoise.sfb_count1\n && prevNoise.step[sfb] > 0\n && step >= prevNoise.step[sfb]) {\n\n if (accumulate != 0) {\n quantize_lines_xrpow(accumulate, istep, acc_xp,\n acc_xpPos, acc_iData, acc_iDataPos);\n accumulate = 0;\n acc_iData = iData;\n acc_iDataPos = iDataPos;\n acc_xp = xp;\n acc_xpPos = xpPos;\n }\n accumulate01 += l;\n } else {\n if (accumulate01 != 0) {\n quantize_lines_xrpow_01(accumulate01, istep, acc_xp,\n acc_xpPos, acc_iData, acc_iDataPos);\n accumulate01 = 0;\n acc_iData = iData;\n acc_iDataPos = iDataPos;\n acc_xp = xp;\n acc_xpPos = xpPos;\n }\n accumulate += l;\n }\n\n if (l <= 0) {\n /*\n * rh: 20040215 may happen due to "prev_data_use"\n * optimization\n */\n if (accumulate01 != 0) {\n quantize_lines_xrpow_01(accumulate01, istep, acc_xp,\n acc_xpPos, acc_iData, acc_iDataPos);\n accumulate01 = 0;\n }\n if (accumulate != 0) {\n quantize_lines_xrpow(accumulate, istep, acc_xp,\n acc_xpPos, acc_iData, acc_iDataPos);\n accumulate = 0;\n }\n\n break;\n /* ends for-loop */\n }\n }\n if (sfb <= sfbmax) {\n iDataPos += codInfo.width[sfb];\n xpPos += codInfo.width[sfb];\n j += codInfo.width[sfb];\n }\n }\n if (accumulate != 0) { /* last data part */\n quantize_lines_xrpow(accumulate, istep, acc_xp, acc_xpPos,\n acc_iData, acc_iDataPos);\n accumulate = 0;\n }\n if (accumulate01 != 0) { /* last data part */\n quantize_lines_xrpow_01(accumulate01, istep, acc_xp, acc_xpPos,\n acc_iData, acc_iDataPos);\n accumulate01 = 0;\n }\n\n }\n\n /**\n * ix_max\n */\n function ix_max(ix, ixPos, endPos) {\n var max1 = 0, max2 = 0;\n\n do {\n var x1 = ix[ixPos++];\n var x2 = ix[ixPos++];\n if (max1 < x1)\n max1 = x1;\n\n if (max2 < x2)\n max2 = x2;\n } while (ixPos < endPos);\n if (max1 < max2)\n max1 = max2;\n return max1;\n }\n\n function count_bit_ESC(ix, ixPos, end, t1, t2, s) {\n /* ESC-table is used */\n var linbits = Tables.ht[t1].xlen * 65536 + Tables.ht[t2].xlen;\n var sum = 0, sum2;\n\n do {\n var x = ix[ixPos++];\n var y = ix[ixPos++];\n\n if (x != 0) {\n if (x > 14) {\n x = 15;\n sum += linbits;\n }\n x *= 16;\n }\n\n if (y != 0) {\n if (y > 14) {\n y = 15;\n sum += linbits;\n }\n x += y;\n }\n\n sum += Tables.largetbl[x];\n } while (ixPos < end);\n\n sum2 = sum & 0xffff;\n sum >>= 16;\n\n if (sum > sum2) {\n sum = sum2;\n t1 = t2;\n }\n\n s.bits += sum;\n return t1;\n }\n\n function count_bit_noESC(ix, ixPos, end, s) {\n /* No ESC-words */\n var sum1 = 0;\n var hlen1 = Tables.ht[1].hlen;\n\n do {\n var x = ix[ixPos + 0] * 2 + ix[ixPos + 1];\n ixPos += 2;\n sum1 += hlen1[x];\n } while (ixPos < end);\n\n s.bits += sum1;\n return 1;\n }\n\n function count_bit_noESC_from2(ix, ixPos, end, t1, s) {\n /* No ESC-words */\n var sum = 0, sum2;\n var xlen = Tables.ht[t1].xlen;\n var hlen;\n if (t1 == 2)\n hlen = Tables.table23;\n else\n hlen = Tables.table56;\n\n do {\n var x = ix[ixPos + 0] * xlen + ix[ixPos + 1];\n ixPos += 2;\n sum += hlen[x];\n } while (ixPos < end);\n\n sum2 = sum & 0xffff;\n sum >>= 16;\n\n if (sum > sum2) {\n sum = sum2;\n t1++;\n }\n\n s.bits += sum;\n return t1;\n }\n\n function count_bit_noESC_from3(ix, ixPos, end, t1, s) {\n /* No ESC-words */\n var sum1 = 0;\n var sum2 = 0;\n var sum3 = 0;\n var xlen = Tables.ht[t1].xlen;\n var hlen1 = Tables.ht[t1].hlen;\n var hlen2 = Tables.ht[t1 + 1].hlen;\n var hlen3 = Tables.ht[t1 + 2].hlen;\n\n do {\n var x = ix[ixPos + 0] * xlen + ix[ixPos + 1];\n ixPos += 2;\n sum1 += hlen1[x];\n sum2 += hlen2[x];\n sum3 += hlen3[x];\n } while (ixPos < end);\n var t = t1;\n if (sum1 > sum2) {\n sum1 = sum2;\n t++;\n }\n if (sum1 > sum3) {\n sum1 = sum3;\n t = t1 + 2;\n }\n s.bits += sum1;\n\n return t;\n }\n\n /*************************************************************************/\n /* choose table */\n /*************************************************************************/\n\n var huf_tbl_noESC = [1, 2, 5, 7, 7, 10, 10, 13, 13,\n 13, 13, 13, 13, 13, 13];\n\n /**\n * Choose the Huffman table that will encode ix[begin..end] with the fewest\n * bits.\n *\n * Note: This code contains knowledge about the sizes and characteristics of\n * the Huffman tables as defined in the IS (Table B.7), and will not work\n * with any arbitrary tables.\n */\n function choose_table(ix, ixPos, endPos, s) {\n var max = ix_max(ix, ixPos, endPos);\n\n switch (max) {\n case 0:\n return max;\n\n case 1:\n return count_bit_noESC(ix, ixPos, endPos, s);\n\n case 2:\n case 3:\n return count_bit_noESC_from2(ix, ixPos, endPos,\n huf_tbl_noESC[max - 1], s);\n\n case 4:\n case 5:\n case 6:\n case 7:\n case 8:\n case 9:\n case 10:\n case 11:\n case 12:\n case 13:\n case 14:\n case 15:\n return count_bit_noESC_from3(ix, ixPos, endPos,\n huf_tbl_noESC[max - 1], s);\n\n default:\n /* try tables with linbits */\n if (max > QuantizePVT.IXMAX_VAL) {\n s.bits = QuantizePVT.LARGE_BITS;\n return -1;\n }\n max -= 15;\n var choice2;\n for (choice2 = 24; choice2 < 32; choice2++) {\n if (Tables.ht[choice2].linmax >= max) {\n break;\n }\n }\n var choice;\n for (choice = choice2 - 8; choice < 24; choice++) {\n if (Tables.ht[choice].linmax >= max) {\n break;\n }\n }\n return count_bit_ESC(ix, ixPos, endPos, choice, choice2, s);\n }\n }\n\n /**\n * count_bit\n */\n this.noquant_count_bits = function (gfc, gi, prev_noise) {\n var ix = gi.l3_enc;\n var i = Math.min(576, ((gi.max_nonzero_coeff + 2) >> 1) << 1);\n\n if (prev_noise != null)\n prev_noise.sfb_count1 = 0;\n\n /* Determine count1 region */\n for (; i > 1; i -= 2)\n if ((ix[i - 1] | ix[i - 2]) != 0)\n break;\n gi.count1 = i;\n\n /* Determines the number of bits to encode the quadruples. */\n var a1 = 0;\n var a2 = 0;\n for (; i > 3; i -= 4) {\n var p;\n /* hack to check if all values <= 1 */\n //throw "TODO: HACK if ((((long) ix[i - 1] | (long) ix[i - 2] | (long) ix[i - 3] | (long) ix[i - 4]) & 0xffffffffL) > 1L "\n //if (true) {\n if (((ix[i - 1] | ix[i - 2] | ix[i - 3] | ix[i - 4]) & 0x7fffffff) > 1) {\n break;\n }\n p = ((ix[i - 4] * 2 + ix[i - 3]) * 2 + ix[i - 2]) * 2 + ix[i - 1];\n a1 += Tables.t32l[p];\n a2 += Tables.t33l[p];\n }\n var bits = a1;\n gi.count1table_select = 0;\n if (a1 > a2) {\n bits = a2;\n gi.count1table_select = 1;\n }\n\n gi.count1bits = bits;\n gi.big_values = i;\n if (i == 0)\n return bits;\n\n if (gi.block_type == Encoder.SHORT_TYPE) {\n a1 = 3 * gfc.scalefac_band.s[3];\n if (a1 > gi.big_values)\n a1 = gi.big_values;\n a2 = gi.big_values;\n\n } else if (gi.block_type == Encoder.NORM_TYPE) {\n assert(i <= 576);\n /* bv_scf has 576 entries (0..575) */\n a1 = gi.region0_count = gfc.bv_scf[i - 2];\n a2 = gi.region1_count = gfc.bv_scf[i - 1];\n\n assert(a1 + a2 + 2 < Encoder.SBPSY_l);\n a2 = gfc.scalefac_band.l[a1 + a2 + 2];\n a1 = gfc.scalefac_band.l[a1 + 1];\n if (a2 < i) {\n var bi = new Bits(bits);\n gi.table_select[2] = choose_table(ix, a2, i, bi);\n bits = bi.bits;\n }\n } else {\n gi.region0_count = 7;\n /* gi.region1_count = SBPSY_l - 7 - 1; */\n gi.region1_count = Encoder.SBMAX_l - 1 - 7 - 1;\n a1 = gfc.scalefac_band.l[7 + 1];\n a2 = i;\n if (a1 > a2) {\n a1 = a2;\n }\n }\n\n /* have to allow for the case when bigvalues < region0 < region1 */\n /* (and region0, region1 are ignored) */\n a1 = Math.min(a1, i);\n a2 = Math.min(a2, i);\n\n assert(a1 >= 0);\n assert(a2 >= 0);\n\n /* Count the number of bits necessary to code the bigvalues region. */\n if (0 < a1) {\n var bi = new Bits(bits);\n gi.table_select[0] = choose_table(ix, 0, a1, bi);\n bits = bi.bits;\n }\n if (a1 < a2) {\n var bi = new Bits(bits);\n gi.table_select[1] = choose_table(ix, a1, a2, bi);\n bits = bi.bits;\n }\n if (gfc.use_best_huffman == 2) {\n gi.part2_3_length = bits;\n best_huffman_divide(gfc, gi);\n bits = gi.part2_3_length;\n }\n\n if (prev_noise != null) {\n if (gi.block_type == Encoder.NORM_TYPE) {\n var sfb = 0;\n while (gfc.scalefac_band.l[sfb] < gi.big_values) {\n sfb++;\n }\n prev_noise.sfb_count1 = sfb;\n }\n }\n\n return bits;\n }\n\n this.count_bits = function (gfc, xr, gi, prev_noise) {\n var ix = gi.l3_enc;\n\n /* since quantize_xrpow uses table lookup, we need to check this first: */\n var w = (QuantizePVT.IXMAX_VAL) / qupvt.IPOW20(gi.global_gain);\n\n if (gi.xrpow_max > w)\n return QuantizePVT.LARGE_BITS;\n\n quantize_xrpow(xr, ix, qupvt.IPOW20(gi.global_gain), gi, prev_noise);\n\n if ((gfc.substep_shaping & 2) != 0) {\n var j = 0;\n /* 0.634521682242439 = 0.5946*2**(.5*0.1875) */\n var gain = gi.global_gain + gi.scalefac_scale;\n var roundfac = 0.634521682242439 / qupvt.IPOW20(gain);\n for (var sfb = 0; sfb < gi.sfbmax; sfb++) {\n var width = gi.width[sfb];\n assert(width >= 0);\n if (0 == gfc.pseudohalf[sfb]) {\n j += width;\n } else {\n var k;\n for (k = j, j += width; k < j; ++k) {\n ix[k] = (xr[k] >= roundfac) ? ix[k] : 0;\n }\n }\n }\n }\n return this.noquant_count_bits(gfc, gi, prev_noise);\n }\n\n /**\n * re-calculate the best scalefac_compress using scfsi the saved bits are\n * kept in the bit reservoir.\n */\n function recalc_divide_init(gfc, cod_info, ix, r01_bits, r01_div, r0_tbl, r1_tbl) {\n var bigv = cod_info.big_values;\n\n for (var r0 = 0; r0 <= 7 + 15; r0++) {\n r01_bits[r0] = QuantizePVT.LARGE_BITS;\n }\n\n for (var r0 = 0; r0 < 16; r0++) {\n var a1 = gfc.scalefac_band.l[r0 + 1];\n if (a1 >= bigv)\n break;\n var r0bits = 0;\n var bi = new Bits(r0bits);\n var r0t = choose_table(ix, 0, a1, bi);\n r0bits = bi.bits;\n\n for (var r1 = 0; r1 < 8; r1++) {\n var a2 = gfc.scalefac_band.l[r0 + r1 + 2];\n if (a2 >= bigv)\n break;\n var bits = r0bits;\n bi = new Bits(bits);\n var r1t = choose_table(ix, a1, a2, bi);\n bits = bi.bits;\n if (r01_bits[r0 + r1] > bits) {\n r01_bits[r0 + r1] = bits;\n r01_div[r0 + r1] = r0;\n r0_tbl[r0 + r1] = r0t;\n r1_tbl[r0 + r1] = r1t;\n }\n }\n }\n }\n\n function recalc_divide_sub(gfc, cod_info2, gi, ix, r01_bits, r01_div, r0_tbl, r1_tbl) {\n var bigv = cod_info2.big_values;\n\n for (var r2 = 2; r2 < Encoder.SBMAX_l + 1; r2++) {\n var a2 = gfc.scalefac_band.l[r2];\n if (a2 >= bigv)\n break;\n var bits = r01_bits[r2 - 2] + cod_info2.count1bits;\n if (gi.part2_3_length <= bits)\n break;\n\n var bi = new Bits(bits);\n var r2t = choose_table(ix, a2, bigv, bi);\n bits = bi.bits;\n if (gi.part2_3_length <= bits)\n continue;\n\n gi.assign(cod_info2);\n gi.part2_3_length = bits;\n gi.region0_count = r01_div[r2 - 2];\n gi.region1_count = r2 - 2 - r01_div[r2 - 2];\n gi.table_select[0] = r0_tbl[r2 - 2];\n gi.table_select[1] = r1_tbl[r2 - 2];\n gi.table_select[2] = r2t;\n }\n }\n\n this.best_huffman_divide = function (gfc, gi) {\n var cod_info2 = new GrInfo();\n var ix = gi.l3_enc;\n var r01_bits = new_int(7 + 15 + 1);\n var r01_div = new_int(7 + 15 + 1);\n var r0_tbl = new_int(7 + 15 + 1);\n var r1_tbl = new_int(7 + 15 + 1);\n\n /* SHORT BLOCK stuff fails for MPEG2 */\n if (gi.block_type == Encoder.SHORT_TYPE && gfc.mode_gr == 1)\n return;\n\n cod_info2.assign(gi);\n if (gi.block_type == Encoder.NORM_TYPE) {\n recalc_divide_init(gfc, gi, ix, r01_bits, r01_div, r0_tbl, r1_tbl);\n recalc_divide_sub(gfc, cod_info2, gi, ix, r01_bits, r01_div,\n r0_tbl, r1_tbl);\n }\n var i = cod_info2.big_values;\n if (i == 0 || (ix[i - 2] | ix[i - 1]) > 1)\n return;\n\n i = gi.count1 + 2;\n if (i > 576)\n return;\n\n /* Determines the number of bits to encode the quadruples. */\n cod_info2.assign(gi);\n cod_info2.count1 = i;\n var a1 = 0;\n var a2 = 0;\n\n assert(i <= 576);\n\n for (; i > cod_info2.big_values; i -= 4) {\n var p = ((ix[i - 4] * 2 + ix[i - 3]) * 2 + ix[i - 2]) * 2\n + ix[i - 1];\n a1 += Tables.t32l[p];\n a2 += Tables.t33l[p];\n }\n cod_info2.big_values = i;\n\n cod_info2.count1table_select = 0;\n if (a1 > a2) {\n a1 = a2;\n cod_info2.count1table_select = 1;\n }\n\n cod_info2.count1bits = a1;\n\n if (cod_info2.block_type == Encoder.NORM_TYPE)\n recalc_divide_sub(gfc, cod_info2, gi, ix, r01_bits, r01_div,\n r0_tbl, r1_tbl);\n else {\n /* Count the number of bits necessary to code the bigvalues region. */\n cod_info2.part2_3_length = a1;\n a1 = gfc.scalefac_band.l[7 + 1];\n if (a1 > i) {\n a1 = i;\n }\n if (a1 > 0) {\n var bi = new Bits(cod_info2.part2_3_length);\n cod_info2.table_select[0] = choose_table(ix, 0, a1, bi);\n cod_info2.part2_3_length = bi.bits;\n }\n if (i > a1) {\n var bi = new Bits(cod_info2.part2_3_length);\n cod_info2.table_select[1] = choose_table(ix, a1, i, bi);\n cod_info2.part2_3_length = bi.bits;\n }\n if (gi.part2_3_length > cod_info2.part2_3_length)\n gi.assign(cod_info2);\n }\n }\n\n var slen1_n = [1, 1, 1, 1, 8, 2, 2, 2, 4, 4, 4, 8, 8, 8, 16, 16];\n var slen2_n = [1, 2, 4, 8, 1, 2, 4, 8, 2, 4, 8, 2, 4, 8, 4, 8];\n var slen1_tab = [0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4];\n var slen2_tab = [0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3];\n Takehiro.slen1_tab = slen1_tab;\n Takehiro.slen2_tab = slen2_tab;\n\n function scfsi_calc(ch, l3_side) {\n var sfb;\n var gi = l3_side.tt[1][ch];\n var g0 = l3_side.tt[0][ch];\n\n for (var i = 0; i < Tables.scfsi_band.length - 1; i++) {\n for (sfb = Tables.scfsi_band[i]; sfb < Tables.scfsi_band[i + 1]; sfb++) {\n if (g0.scalefac[sfb] != gi.scalefac[sfb]\n && gi.scalefac[sfb] >= 0)\n break;\n }\n if (sfb == Tables.scfsi_band[i + 1]) {\n for (sfb = Tables.scfsi_band[i]; sfb < Tables.scfsi_band[i + 1]; sfb++) {\n gi.scalefac[sfb] = -1;\n }\n l3_side.scfsi[ch][i] = 1;\n }\n }\n var s1 = 0;\n var c1 = 0;\n for (sfb = 0; sfb < 11; sfb++) {\n if (gi.scalefac[sfb] == -1)\n continue;\n c1++;\n if (s1 < gi.scalefac[sfb])\n s1 = gi.scalefac[sfb];\n }\n var s2 = 0;\n var c2 = 0;\n for (; sfb < Encoder.SBPSY_l; sfb++) {\n if (gi.scalefac[sfb] == -1)\n continue;\n c2++;\n if (s2 < gi.scalefac[sfb])\n s2 = gi.scalefac[sfb];\n }\n\n for (var i = 0; i < 16; i++) {\n if (s1 < slen1_n[i] && s2 < slen2_n[i]) {\n var c = slen1_tab[i] * c1 + slen2_tab[i] * c2;\n if (gi.part2_length > c) {\n gi.part2_length = c;\n gi.scalefac_compress = i;\n }\n }\n }\n }\n\n /**\n * Find the optimal way to store the scalefactors. Only call this routine\n * after final scalefactors have been chosen and the channel/granule will\n * not be re-encoded.\n */\n this.best_scalefac_store = function (gfc, gr, ch, l3_side) {\n /* use scalefac_scale if we can */\n var gi = l3_side.tt[gr][ch];\n var sfb, i, j, l;\n var recalc = 0;\n\n /*\n * remove scalefacs from bands with ix=0. This idea comes from the AAC\n * ISO docs. added mt 3/00\n */\n /* check if l3_enc=0 */\n j = 0;\n for (sfb = 0; sfb < gi.sfbmax; sfb++) {\n var width = gi.width[sfb];\n assert(width >= 0);\n j += width;\n for (l = -width; l < 0; l++) {\n if (gi.l3_enc[l + j] != 0)\n break;\n }\n if (l == 0)\n gi.scalefac[sfb] = recalc = -2;\n /* anything goes. */\n /*\n * only best_scalefac_store and calc_scfsi know--and only they\n * should know--about the magic number -2.\n */\n }\n\n if (0 == gi.scalefac_scale && 0 == gi.preflag) {\n var s = 0;\n for (sfb = 0; sfb < gi.sfbmax; sfb++)\n if (gi.scalefac[sfb] > 0)\n s |= gi.scalefac[sfb];\n\n if (0 == (s & 1) && s != 0) {\n for (sfb = 0; sfb < gi.sfbmax; sfb++)\n if (gi.scalefac[sfb] > 0)\n gi.scalefac[sfb] >>= 1;\n\n gi.scalefac_scale = recalc = 1;\n }\n }\n\n if (0 == gi.preflag && gi.block_type != Encoder.SHORT_TYPE\n && gfc.mode_gr == 2) {\n for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n if (gi.scalefac[sfb] < qupvt.pretab[sfb]\n && gi.scalefac[sfb] != -2)\n break;\n if (sfb == Encoder.SBPSY_l) {\n for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n if (gi.scalefac[sfb] > 0)\n gi.scalefac[sfb] -= qupvt.pretab[sfb];\n\n gi.preflag = recalc = 1;\n }\n }\n\n for (i = 0; i < 4; i++)\n l3_side.scfsi[ch][i] = 0;\n\n if (gfc.mode_gr == 2 && gr == 1\n && l3_side.tt[0][ch].block_type != Encoder.SHORT_TYPE\n && l3_side.tt[1][ch].block_type != Encoder.SHORT_TYPE) {\n scfsi_calc(ch, l3_side);\n recalc = 0;\n }\n for (sfb = 0; sfb < gi.sfbmax; sfb++) {\n if (gi.scalefac[sfb] == -2) {\n gi.scalefac[sfb] = 0;\n /* if anything goes, then 0 is a good choice */\n }\n }\n if (recalc != 0) {\n if (gfc.mode_gr == 2) {\n this.scale_bitcount(gi);\n } else {\n this.scale_bitcount_lsf(gfc, gi);\n }\n }\n }\n\n function all_scalefactors_not_negative(scalefac, n) {\n for (var i = 0; i < n; ++i) {\n if (scalefac[i] < 0)\n return false;\n }\n return true;\n }\n\n /**\n * number of bits used to encode scalefacs.\n *\n * 18*slen1_tab[i] + 18*slen2_tab[i]\n */\n var scale_short = [0, 18, 36, 54, 54, 36, 54, 72,\n 54, 72, 90, 72, 90, 108, 108, 126];\n\n /**\n * number of bits used to encode scalefacs.\n *\n * 17*slen1_tab[i] + 18*slen2_tab[i]\n */\n var scale_mixed = [0, 18, 36, 54, 51, 35, 53, 71,\n 52, 70, 88, 69, 87, 105, 104, 122];\n\n /**\n * number of bits used to encode scalefacs.\n *\n * 11*slen1_tab[i] + 10*slen2_tab[i]\n */\n var scale_long = [0, 10, 20, 30, 33, 21, 31, 41, 32, 42,\n 52, 43, 53, 63, 64, 74];\n\n /**\n * Also calculates the number of bits necessary to code the scalefactors.\n */\n this.scale_bitcount = function (cod_info) {\n var k, sfb, max_slen1 = 0, max_slen2 = 0;\n\n /* maximum values */\n var tab;\n var scalefac = cod_info.scalefac;\n\n assert(all_scalefactors_not_negative(scalefac, cod_info.sfbmax));\n\n if (cod_info.block_type == Encoder.SHORT_TYPE) {\n tab = scale_short;\n if (cod_info.mixed_block_flag != 0)\n tab = scale_mixed;\n } else { /* block_type == 1,2,or 3 */\n tab = scale_long;\n if (0 == cod_info.preflag) {\n for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n if (scalefac[sfb] < qupvt.pretab[sfb])\n break;\n\n if (sfb == Encoder.SBPSY_l) {\n cod_info.preflag = 1;\n for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n scalefac[sfb] -= qupvt.pretab[sfb];\n }\n }\n }\n\n for (sfb = 0; sfb < cod_info.sfbdivide; sfb++)\n if (max_slen1 < scalefac[sfb])\n max_slen1 = scalefac[sfb];\n\n for (; sfb < cod_info.sfbmax; sfb++)\n if (max_slen2 < scalefac[sfb])\n max_slen2 = scalefac[sfb];\n\n /*\n * from Takehiro TOMINAGA 10/99 loop over *all*\n * posible values of scalefac_compress to find the one which uses the\n * smallest number of bits. ISO would stop at first valid index\n */\n cod_info.part2_length = QuantizePVT.LARGE_BITS;\n for (k = 0; k < 16; k++) {\n if (max_slen1 < slen1_n[k] && max_slen2 < slen2_n[k]\n && cod_info.part2_length > tab[k]) {\n cod_info.part2_length = tab[k];\n cod_info.scalefac_compress = k;\n }\n }\n return cod_info.part2_length == QuantizePVT.LARGE_BITS;\n }\n\n /**\n * table of largest scalefactor values for MPEG2\n */\n var max_range_sfac_tab = [[15, 15, 7, 7],\n [15, 15, 7, 0], [7, 3, 0, 0], [15, 31, 31, 0],\n [7, 7, 7, 0], [3, 3, 0, 0]];\n\n /**\n * Also counts the number of bits to encode the scalefacs but for MPEG 2\n * Lower sampling frequencies (24, 22.05 and 16 kHz.)\n *\n * This is reverse-engineered from section 2.4.3.2 of the MPEG2 IS,\n * "Audio Decoding Layer III"\n */\n this.scale_bitcount_lsf = function (gfc, cod_info) {\n var table_number, row_in_table, partition, nr_sfb, window;\n var over;\n var i, sfb;\n var max_sfac = new_int(4);\n//var partition_table;\n var scalefac = cod_info.scalefac;\n\n /*\n * Set partition table. Note that should try to use table one, but do\n * not yet...\n */\n if (cod_info.preflag != 0)\n table_number = 2;\n else\n table_number = 0;\n\n for (i = 0; i < 4; i++)\n max_sfac[i] = 0;\n\n if (cod_info.block_type == Encoder.SHORT_TYPE) {\n row_in_table = 1;\n var partition_table = qupvt.nr_of_sfb_block[table_number][row_in_table];\n for (sfb = 0, partition = 0; partition < 4; partition++) {\n nr_sfb = partition_table[partition] / 3;\n for (i = 0; i < nr_sfb; i++, sfb++)\n for (window = 0; window < 3; window++)\n if (scalefac[sfb * 3 + window] > max_sfac[partition])\n max_sfac[partition] = scalefac[sfb * 3 + window];\n }\n } else {\n row_in_table = 0;\n var partition_table = qupvt.nr_of_sfb_block[table_number][row_in_table];\n for (sfb = 0, partition = 0; partition < 4; partition++) {\n nr_sfb = partition_table[partition];\n for (i = 0; i < nr_sfb; i++, sfb++)\n if (scalefac[sfb] > max_sfac[partition])\n max_sfac[partition] = scalefac[sfb];\n }\n }\n\n for (over = false, partition = 0; partition < 4; partition++) {\n if (max_sfac[partition] > max_range_sfac_tab[table_number][partition])\n over = true;\n }\n if (!over) {\n var slen1, slen2, slen3, slen4;\n\n cod_info.sfb_partition_table = qupvt.nr_of_sfb_block[table_number][row_in_table];\n for (partition = 0; partition < 4; partition++)\n cod_info.slen[partition] = log2tab[max_sfac[partition]];\n\n /* set scalefac_compress */\n slen1 = cod_info.slen[0];\n slen2 = cod_info.slen[1];\n slen3 = cod_info.slen[2];\n slen4 = cod_info.slen[3];\n\n switch (table_number) {\n case 0:\n cod_info.scalefac_compress = (((slen1 * 5) + slen2) << 4)\n + (slen3 << 2) + slen4;\n break;\n\n case 1:\n cod_info.scalefac_compress = 400 + (((slen1 * 5) + slen2) << 2)\n + slen3;\n break;\n\n case 2:\n cod_info.scalefac_compress = 500 + (slen1 * 3) + slen2;\n break;\n\n default:\n System.err.printf("intensity stereo not implemented yet\\n");\n break;\n }\n }\n if (!over) {\n assert(cod_info.sfb_partition_table != null);\n cod_info.part2_length = 0;\n for (partition = 0; partition < 4; partition++)\n cod_info.part2_length += cod_info.slen[partition]\n * cod_info.sfb_partition_table[partition];\n }\n return over;\n }\n\n /*\n * Since no bands have been over-amplified, we can set scalefac_compress and\n * slen[] for the formatter\n */\n var log2tab = [0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4,\n 4, 4, 4, 4];\n\n this.huffman_init = function (gfc) {\n for (var i = 2; i <= 576; i += 2) {\n var scfb_anz = 0, bv_index;\n while (gfc.scalefac_band.l[++scfb_anz] < i)\n ;\n\n bv_index = subdv_table[scfb_anz][0]; // .region0_count\n while (gfc.scalefac_band.l[bv_index + 1] > i)\n bv_index--;\n\n if (bv_index < 0) {\n /*\n * this is an indication that everything is going to be encoded\n * as region0: bigvalues < region0 < region1 so lets set\n * region0, region1 to some value larger than bigvalues\n */\n bv_index = subdv_table[scfb_anz][0]; // .region0_count\n }\n\n gfc.bv_scf[i - 2] = bv_index;\n\n bv_index = subdv_table[scfb_anz][1]; // .region1_count\n while (gfc.scalefac_band.l[bv_index + gfc.bv_scf[i - 2] + 2] > i)\n bv_index--;\n\n if (bv_index < 0) {\n bv_index = subdv_table[scfb_anz][1]; // .region1_count\n }\n\n gfc.bv_scf[i - 1] = bv_index;\n }\n }\n}\n\nmodule.exports = Takehiro;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"/MY8.js","sources":["webpack:///./node_modules/_lamejs@1.2.1@lamejs/src/js/Takehiro.js?fcc6"],"sourcesContent":["/*\n *\tMP3 huffman table selecting and bit counting\n *\n *\tCopyright (c) 1999-2005 Takehiro TOMINAGA\n *\tCopyright (c) 2002-2005 Gabriel Bouvigne\n *\n * This library is free software; you can redistribute it and/or\n * modify it under the terms of the GNU Lesser General Public\n * License as published by the Free Software Foundation; either\n * version 2 of the License, or (at your option) any later version.\n *\n * This library is distributed in the hope that it will be useful,\n * but WITHOUT ANY WARRANTY; without even the implied warranty of\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\t See the GNU\n * Library General Public License for more details.\n *\n * You should have received a copy of the GNU Lesser General Public\n * License along with this library; if not, write to the\n * Free Software Foundation, Inc., 59 Temple Place - Suite 330,\n * Boston, MA 02111-1307, USA.\n */\n\n/* $Id: Takehiro.java,v 1.26 2011/05/24 20:48:06 kenchis Exp $ */\n\n//package mp3;\n\n//import java.util.Arrays;\nvar common = require('./common.js');\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\nvar Encoder = require('./Encoder.js');\nvar Tables = require('./Tables.js');\nvar GrInfo = require('./GrInfo.js');\nvar QuantizePVT = require('./QuantizePVT.js');\n\n\nfunction Takehiro() {\n\n    var qupvt = null;\n    this.qupvt = null;\n\n    this.setModules = function (_qupvt) {\n        this.qupvt = _qupvt;\n        qupvt = _qupvt;\n    }\n\n    function Bits(b) {\n        this.bits = 0 | b;\n    }\n\n    var subdv_table = [[0, 0], /* 0 bands */\n        [0, 0], /* 1 bands */\n        [0, 0], /* 2 bands */\n        [0, 0], /* 3 bands */\n        [0, 0], /* 4 bands */\n        [0, 1], /* 5 bands */\n        [1, 1], /* 6 bands */\n        [1, 1], /* 7 bands */\n        [1, 2], /* 8 bands */\n        [2, 2], /* 9 bands */\n        [2, 3], /* 10 bands */\n        [2, 3], /* 11 bands */\n        [3, 4], /* 12 bands */\n        [3, 4], /* 13 bands */\n        [3, 4], /* 14 bands */\n        [4, 5], /* 15 bands */\n        [4, 5], /* 16 bands */\n        [4, 6], /* 17 bands */\n        [5, 6], /* 18 bands */\n        [5, 6], /* 19 bands */\n        [5, 7], /* 20 bands */\n        [6, 7], /* 21 bands */\n        [6, 7], /* 22 bands */\n    ];\n\n    /**\n     * nonlinear quantization of xr More accurate formula than the ISO formula.\n     * Takes into account the fact that we are quantizing xr . ix, but we want\n     * ix^4/3 to be as close as possible to x^4/3. (taking the nearest int would\n     * mean ix is as close as possible to xr, which is different.)\n     *\n     * From Segher Boessenkool <segher@eastsite.nl> 11/1999\n     *\n     * 09/2000: ASM code removed in favor of IEEE754 hack by Takehiro Tominaga.\n     * If you need the ASM code, check CVS circa Aug 2000.\n     *\n     * 01/2004: Optimizations by Gabriel Bouvigne\n     */\n    function quantize_lines_xrpow_01(l, istep, xr, xrPos, ix, ixPos) {\n        var compareval0 = (1.0 - 0.4054) / istep;\n\n        assert(l > 0);\n        l = l >> 1;\n        while ((l--) != 0) {\n            ix[ixPos++] = (compareval0 > xr[xrPos++]) ? 0 : 1;\n            ix[ixPos++] = (compareval0 > xr[xrPos++]) ? 0 : 1;\n        }\n    }\n\n    /**\n     * XRPOW_FTOI is a macro to convert floats to ints.<BR>\n     * if XRPOW_FTOI(x) = nearest_int(x), then QUANTFAC(x)=adj43asm[x]<BR>\n     * ROUNDFAC= -0.0946<BR>\n     *\n     * if XRPOW_FTOI(x) = floor(x), then QUANTFAC(x)=asj43[x]<BR>\n     * ROUNDFAC=0.4054<BR>\n     *\n     * Note: using floor() or 0| is extremely slow. On machines where the\n     * TAKEHIRO_IEEE754_HACK code above does not work, it is worthwile to write\n     * some ASM for XRPOW_FTOI().\n     */\n    function quantize_lines_xrpow(l, istep, xr, xrPos, ix, ixPos) {\n        assert(l > 0);\n\n        l = l >> 1;\n        var remaining = l % 2;\n        l = l >> 1;\n        while (l-- != 0) {\n            var x0, x1, x2, x3;\n            var rx0, rx1, rx2, rx3;\n\n            x0 = xr[xrPos++] * istep;\n            x1 = xr[xrPos++] * istep;\n            rx0 = 0 | x0;\n            x2 = xr[xrPos++] * istep;\n            rx1 = 0 | x1;\n            x3 = xr[xrPos++] * istep;\n            rx2 = 0 | x2;\n            x0 += qupvt.adj43[rx0];\n            rx3 = 0 | x3;\n            x1 += qupvt.adj43[rx1];\n            ix[ixPos++] = 0 | x0;\n            x2 += qupvt.adj43[rx2];\n            ix[ixPos++] = 0 | x1;\n            x3 += qupvt.adj43[rx3];\n            ix[ixPos++] = 0 | x2;\n            ix[ixPos++] = 0 | x3;\n        }\n        if (remaining != 0) {\n            var x0, x1;\n            var rx0, rx1;\n\n            x0 = xr[xrPos++] * istep;\n            x1 = xr[xrPos++] * istep;\n            rx0 = 0 | x0;\n            rx1 = 0 | x1;\n            x0 += qupvt.adj43[rx0];\n            x1 += qupvt.adj43[rx1];\n            ix[ixPos++] = 0 | x0;\n            ix[ixPos++] = 0 | x1;\n        }\n    }\n\n    /**\n     * Quantization function This function will select which lines to quantize\n     * and call the proper quantization function\n     */\n    function quantize_xrpow(xp, pi, istep, codInfo, prevNoise) {\n        /* quantize on xr^(3/4) instead of xr */\n        var sfb;\n        var sfbmax;\n        var j = 0;\n        var prev_data_use;\n        var accumulate = 0;\n        var accumulate01 = 0;\n        var xpPos = 0;\n        var iData = pi;\n        var iDataPos = 0;\n        var acc_iData = iData;\n        var acc_iDataPos = 0;\n        var acc_xp = xp;\n        var acc_xpPos = 0;\n\n        /*\n         * Reusing previously computed data does not seems to work if global\n         * gain is changed. Finding why it behaves this way would allow to use a\n         * cache of previously computed values (let's 10 cached values per sfb)\n         * that would probably provide a noticeable speedup\n         */\n        prev_data_use = (prevNoise != null && (codInfo.global_gain == prevNoise.global_gain));\n\n        if (codInfo.block_type == Encoder.SHORT_TYPE)\n            sfbmax = 38;\n        else\n            sfbmax = 21;\n\n        for (sfb = 0; sfb <= sfbmax; sfb++) {\n            var step = -1;\n\n            if (prev_data_use || codInfo.block_type == Encoder.NORM_TYPE) {\n                step = codInfo.global_gain\n                    - ((codInfo.scalefac[sfb] + (codInfo.preflag != 0 ? qupvt.pretab[sfb]\n                        : 0)) << (codInfo.scalefac_scale + 1))\n                    - codInfo.subblock_gain[codInfo.window[sfb]] * 8;\n            }\n            assert(codInfo.width[sfb] >= 0);\n            if (prev_data_use && (prevNoise.step[sfb] == step)) {\n                /*\n                 * do not recompute this part, but compute accumulated lines\n                 */\n                if (accumulate != 0) {\n                    quantize_lines_xrpow(accumulate, istep, acc_xp, acc_xpPos,\n                        acc_iData, acc_iDataPos);\n                    accumulate = 0;\n                }\n                if (accumulate01 != 0) {\n                    quantize_lines_xrpow_01(accumulate01, istep, acc_xp,\n                        acc_xpPos, acc_iData, acc_iDataPos);\n                    accumulate01 = 0;\n                }\n            } else { /* should compute this part */\n                var l = codInfo.width[sfb];\n\n                if ((j + codInfo.width[sfb]) > codInfo.max_nonzero_coeff) {\n                    /* do not compute upper zero part */\n                    var usefullsize;\n                    usefullsize = codInfo.max_nonzero_coeff - j + 1;\n                    Arrays.fill(pi, codInfo.max_nonzero_coeff, 576, 0);\n                    l = usefullsize;\n\n                    if (l < 0) {\n                        l = 0;\n                    }\n\n                    /* no need to compute higher sfb values */\n                    sfb = sfbmax + 1;\n                }\n\n                /* accumulate lines to quantize */\n                if (0 == accumulate && 0 == accumulate01) {\n                    acc_iData = iData;\n                    acc_iDataPos = iDataPos;\n                    acc_xp = xp;\n                    acc_xpPos = xpPos;\n                }\n                if (prevNoise != null && prevNoise.sfb_count1 > 0\n                    && sfb >= prevNoise.sfb_count1\n                    && prevNoise.step[sfb] > 0\n                    && step >= prevNoise.step[sfb]) {\n\n                    if (accumulate != 0) {\n                        quantize_lines_xrpow(accumulate, istep, acc_xp,\n                            acc_xpPos, acc_iData, acc_iDataPos);\n                        accumulate = 0;\n                        acc_iData = iData;\n                        acc_iDataPos = iDataPos;\n                        acc_xp = xp;\n                        acc_xpPos = xpPos;\n                    }\n                    accumulate01 += l;\n                } else {\n                    if (accumulate01 != 0) {\n                        quantize_lines_xrpow_01(accumulate01, istep, acc_xp,\n                            acc_xpPos, acc_iData, acc_iDataPos);\n                        accumulate01 = 0;\n                        acc_iData = iData;\n                        acc_iDataPos = iDataPos;\n                        acc_xp = xp;\n                        acc_xpPos = xpPos;\n                    }\n                    accumulate += l;\n                }\n\n                if (l <= 0) {\n                    /*\n                     * rh: 20040215 may happen due to \"prev_data_use\"\n                     * optimization\n                     */\n                    if (accumulate01 != 0) {\n                        quantize_lines_xrpow_01(accumulate01, istep, acc_xp,\n                            acc_xpPos, acc_iData, acc_iDataPos);\n                        accumulate01 = 0;\n                    }\n                    if (accumulate != 0) {\n                        quantize_lines_xrpow(accumulate, istep, acc_xp,\n                            acc_xpPos, acc_iData, acc_iDataPos);\n                        accumulate = 0;\n                    }\n\n                    break;\n                    /* ends for-loop */\n                }\n            }\n            if (sfb <= sfbmax) {\n                iDataPos += codInfo.width[sfb];\n                xpPos += codInfo.width[sfb];\n                j += codInfo.width[sfb];\n            }\n        }\n        if (accumulate != 0) { /* last data part */\n            quantize_lines_xrpow(accumulate, istep, acc_xp, acc_xpPos,\n                acc_iData, acc_iDataPos);\n            accumulate = 0;\n        }\n        if (accumulate01 != 0) { /* last data part */\n            quantize_lines_xrpow_01(accumulate01, istep, acc_xp, acc_xpPos,\n                acc_iData, acc_iDataPos);\n            accumulate01 = 0;\n        }\n\n    }\n\n    /**\n     * ix_max\n     */\n    function ix_max(ix, ixPos, endPos) {\n        var max1 = 0, max2 = 0;\n\n        do {\n            var x1 = ix[ixPos++];\n            var x2 = ix[ixPos++];\n            if (max1 < x1)\n                max1 = x1;\n\n            if (max2 < x2)\n                max2 = x2;\n        } while (ixPos < endPos);\n        if (max1 < max2)\n            max1 = max2;\n        return max1;\n    }\n\n    function count_bit_ESC(ix, ixPos, end, t1, t2, s) {\n        /* ESC-table is used */\n        var linbits = Tables.ht[t1].xlen * 65536 + Tables.ht[t2].xlen;\n        var sum = 0, sum2;\n\n        do {\n            var x = ix[ixPos++];\n            var y = ix[ixPos++];\n\n            if (x != 0) {\n                if (x > 14) {\n                    x = 15;\n                    sum += linbits;\n                }\n                x *= 16;\n            }\n\n            if (y != 0) {\n                if (y > 14) {\n                    y = 15;\n                    sum += linbits;\n                }\n                x += y;\n            }\n\n            sum += Tables.largetbl[x];\n        } while (ixPos < end);\n\n        sum2 = sum & 0xffff;\n        sum >>= 16;\n\n        if (sum > sum2) {\n            sum = sum2;\n            t1 = t2;\n        }\n\n        s.bits += sum;\n        return t1;\n    }\n\n    function count_bit_noESC(ix, ixPos, end, s) {\n        /* No ESC-words */\n        var sum1 = 0;\n        var hlen1 = Tables.ht[1].hlen;\n\n        do {\n            var x = ix[ixPos + 0] * 2 + ix[ixPos + 1];\n            ixPos += 2;\n            sum1 += hlen1[x];\n        } while (ixPos < end);\n\n        s.bits += sum1;\n        return 1;\n    }\n\n    function count_bit_noESC_from2(ix, ixPos, end, t1, s) {\n        /* No ESC-words */\n        var sum = 0, sum2;\n        var xlen = Tables.ht[t1].xlen;\n        var hlen;\n        if (t1 == 2)\n            hlen = Tables.table23;\n        else\n            hlen = Tables.table56;\n\n        do {\n            var x = ix[ixPos + 0] * xlen + ix[ixPos + 1];\n            ixPos += 2;\n            sum += hlen[x];\n        } while (ixPos < end);\n\n        sum2 = sum & 0xffff;\n        sum >>= 16;\n\n        if (sum > sum2) {\n            sum = sum2;\n            t1++;\n        }\n\n        s.bits += sum;\n        return t1;\n    }\n\n    function count_bit_noESC_from3(ix, ixPos, end, t1, s) {\n        /* No ESC-words */\n        var sum1 = 0;\n        var sum2 = 0;\n        var sum3 = 0;\n        var xlen = Tables.ht[t1].xlen;\n        var hlen1 = Tables.ht[t1].hlen;\n        var hlen2 = Tables.ht[t1 + 1].hlen;\n        var hlen3 = Tables.ht[t1 + 2].hlen;\n\n        do {\n            var x = ix[ixPos + 0] * xlen + ix[ixPos + 1];\n            ixPos += 2;\n            sum1 += hlen1[x];\n            sum2 += hlen2[x];\n            sum3 += hlen3[x];\n        } while (ixPos < end);\n        var t = t1;\n        if (sum1 > sum2) {\n            sum1 = sum2;\n            t++;\n        }\n        if (sum1 > sum3) {\n            sum1 = sum3;\n            t = t1 + 2;\n        }\n        s.bits += sum1;\n\n        return t;\n    }\n\n    /*************************************************************************/\n    /* choose table */\n    /*************************************************************************/\n\n    var huf_tbl_noESC = [1, 2, 5, 7, 7, 10, 10, 13, 13,\n        13, 13, 13, 13, 13, 13];\n\n    /**\n     * Choose the Huffman table that will encode ix[begin..end] with the fewest\n     * bits.\n     *\n     * Note: This code contains knowledge about the sizes and characteristics of\n     * the Huffman tables as defined in the IS (Table B.7), and will not work\n     * with any arbitrary tables.\n     */\n    function choose_table(ix, ixPos, endPos, s) {\n        var max = ix_max(ix, ixPos, endPos);\n\n        switch (max) {\n            case 0:\n                return max;\n\n            case 1:\n                return count_bit_noESC(ix, ixPos, endPos, s);\n\n            case 2:\n            case 3:\n                return count_bit_noESC_from2(ix, ixPos, endPos,\n                    huf_tbl_noESC[max - 1], s);\n\n            case 4:\n            case 5:\n            case 6:\n            case 7:\n            case 8:\n            case 9:\n            case 10:\n            case 11:\n            case 12:\n            case 13:\n            case 14:\n            case 15:\n                return count_bit_noESC_from3(ix, ixPos, endPos,\n                    huf_tbl_noESC[max - 1], s);\n\n            default:\n                /* try tables with linbits */\n                if (max > QuantizePVT.IXMAX_VAL) {\n                    s.bits = QuantizePVT.LARGE_BITS;\n                    return -1;\n                }\n                max -= 15;\n                var choice2;\n                for (choice2 = 24; choice2 < 32; choice2++) {\n                    if (Tables.ht[choice2].linmax >= max) {\n                        break;\n                    }\n                }\n                var choice;\n                for (choice = choice2 - 8; choice < 24; choice++) {\n                    if (Tables.ht[choice].linmax >= max) {\n                        break;\n                    }\n                }\n                return count_bit_ESC(ix, ixPos, endPos, choice, choice2, s);\n        }\n    }\n\n    /**\n     * count_bit\n     */\n    this.noquant_count_bits = function (gfc, gi, prev_noise) {\n        var ix = gi.l3_enc;\n        var i = Math.min(576, ((gi.max_nonzero_coeff + 2) >> 1) << 1);\n\n        if (prev_noise != null)\n            prev_noise.sfb_count1 = 0;\n\n        /* Determine count1 region */\n        for (; i > 1; i -= 2)\n            if ((ix[i - 1] | ix[i - 2]) != 0)\n                break;\n        gi.count1 = i;\n\n        /* Determines the number of bits to encode the quadruples. */\n        var a1 = 0;\n        var a2 = 0;\n        for (; i > 3; i -= 4) {\n            var p;\n            /* hack to check if all values <= 1 */\n            //throw \"TODO: HACK         if ((((long) ix[i - 1] | (long) ix[i - 2] | (long) ix[i - 3] | (long) ix[i - 4]) & 0xffffffffL) > 1L        \"\n            //if (true) {\n            if (((ix[i - 1] | ix[i - 2] | ix[i - 3] | ix[i - 4]) & 0x7fffffff) > 1) {\n                break;\n            }\n            p = ((ix[i - 4] * 2 + ix[i - 3]) * 2 + ix[i - 2]) * 2 + ix[i - 1];\n            a1 += Tables.t32l[p];\n            a2 += Tables.t33l[p];\n        }\n        var bits = a1;\n        gi.count1table_select = 0;\n        if (a1 > a2) {\n            bits = a2;\n            gi.count1table_select = 1;\n        }\n\n        gi.count1bits = bits;\n        gi.big_values = i;\n        if (i == 0)\n            return bits;\n\n        if (gi.block_type == Encoder.SHORT_TYPE) {\n            a1 = 3 * gfc.scalefac_band.s[3];\n            if (a1 > gi.big_values)\n                a1 = gi.big_values;\n            a2 = gi.big_values;\n\n        } else if (gi.block_type == Encoder.NORM_TYPE) {\n            assert(i <= 576);\n            /* bv_scf has 576 entries (0..575) */\n            a1 = gi.region0_count = gfc.bv_scf[i - 2];\n            a2 = gi.region1_count = gfc.bv_scf[i - 1];\n\n            assert(a1 + a2 + 2 < Encoder.SBPSY_l);\n            a2 = gfc.scalefac_band.l[a1 + a2 + 2];\n            a1 = gfc.scalefac_band.l[a1 + 1];\n            if (a2 < i) {\n                var bi = new Bits(bits);\n                gi.table_select[2] = choose_table(ix, a2, i, bi);\n                bits = bi.bits;\n            }\n        } else {\n            gi.region0_count = 7;\n            /* gi.region1_count = SBPSY_l - 7 - 1; */\n            gi.region1_count = Encoder.SBMAX_l - 1 - 7 - 1;\n            a1 = gfc.scalefac_band.l[7 + 1];\n            a2 = i;\n            if (a1 > a2) {\n                a1 = a2;\n            }\n        }\n\n        /* have to allow for the case when bigvalues < region0 < region1 */\n        /* (and region0, region1 are ignored) */\n        a1 = Math.min(a1, i);\n        a2 = Math.min(a2, i);\n\n        assert(a1 >= 0);\n        assert(a2 >= 0);\n\n        /* Count the number of bits necessary to code the bigvalues region. */\n        if (0 < a1) {\n            var bi = new Bits(bits);\n            gi.table_select[0] = choose_table(ix, 0, a1, bi);\n            bits = bi.bits;\n        }\n        if (a1 < a2) {\n            var bi = new Bits(bits);\n            gi.table_select[1] = choose_table(ix, a1, a2, bi);\n            bits = bi.bits;\n        }\n        if (gfc.use_best_huffman == 2) {\n            gi.part2_3_length = bits;\n            best_huffman_divide(gfc, gi);\n            bits = gi.part2_3_length;\n        }\n\n        if (prev_noise != null) {\n            if (gi.block_type == Encoder.NORM_TYPE) {\n                var sfb = 0;\n                while (gfc.scalefac_band.l[sfb] < gi.big_values) {\n                    sfb++;\n                }\n                prev_noise.sfb_count1 = sfb;\n            }\n        }\n\n        return bits;\n    }\n\n    this.count_bits = function (gfc, xr, gi, prev_noise) {\n        var ix = gi.l3_enc;\n\n        /* since quantize_xrpow uses table lookup, we need to check this first: */\n        var w = (QuantizePVT.IXMAX_VAL) / qupvt.IPOW20(gi.global_gain);\n\n        if (gi.xrpow_max > w)\n            return QuantizePVT.LARGE_BITS;\n\n        quantize_xrpow(xr, ix, qupvt.IPOW20(gi.global_gain), gi, prev_noise);\n\n        if ((gfc.substep_shaping & 2) != 0) {\n            var j = 0;\n            /* 0.634521682242439 = 0.5946*2**(.5*0.1875) */\n            var gain = gi.global_gain + gi.scalefac_scale;\n            var roundfac = 0.634521682242439 / qupvt.IPOW20(gain);\n            for (var sfb = 0; sfb < gi.sfbmax; sfb++) {\n                var width = gi.width[sfb];\n                assert(width >= 0);\n                if (0 == gfc.pseudohalf[sfb]) {\n                    j += width;\n                } else {\n                    var k;\n                    for (k = j, j += width; k < j; ++k) {\n                        ix[k] = (xr[k] >= roundfac) ? ix[k] : 0;\n                    }\n                }\n            }\n        }\n        return this.noquant_count_bits(gfc, gi, prev_noise);\n    }\n\n    /**\n     * re-calculate the best scalefac_compress using scfsi the saved bits are\n     * kept in the bit reservoir.\n     */\n    function recalc_divide_init(gfc, cod_info, ix, r01_bits, r01_div, r0_tbl, r1_tbl) {\n        var bigv = cod_info.big_values;\n\n        for (var r0 = 0; r0 <= 7 + 15; r0++) {\n            r01_bits[r0] = QuantizePVT.LARGE_BITS;\n        }\n\n        for (var r0 = 0; r0 < 16; r0++) {\n            var a1 = gfc.scalefac_band.l[r0 + 1];\n            if (a1 >= bigv)\n                break;\n            var r0bits = 0;\n            var bi = new Bits(r0bits);\n            var r0t = choose_table(ix, 0, a1, bi);\n            r0bits = bi.bits;\n\n            for (var r1 = 0; r1 < 8; r1++) {\n                var a2 = gfc.scalefac_band.l[r0 + r1 + 2];\n                if (a2 >= bigv)\n                    break;\n                var bits = r0bits;\n                bi = new Bits(bits);\n                var r1t = choose_table(ix, a1, a2, bi);\n                bits = bi.bits;\n                if (r01_bits[r0 + r1] > bits) {\n                    r01_bits[r0 + r1] = bits;\n                    r01_div[r0 + r1] = r0;\n                    r0_tbl[r0 + r1] = r0t;\n                    r1_tbl[r0 + r1] = r1t;\n                }\n            }\n        }\n    }\n\n    function recalc_divide_sub(gfc, cod_info2, gi, ix, r01_bits, r01_div, r0_tbl, r1_tbl) {\n        var bigv = cod_info2.big_values;\n\n        for (var r2 = 2; r2 < Encoder.SBMAX_l + 1; r2++) {\n            var a2 = gfc.scalefac_band.l[r2];\n            if (a2 >= bigv)\n                break;\n            var bits = r01_bits[r2 - 2] + cod_info2.count1bits;\n            if (gi.part2_3_length <= bits)\n                break;\n\n            var bi = new Bits(bits);\n            var r2t = choose_table(ix, a2, bigv, bi);\n            bits = bi.bits;\n            if (gi.part2_3_length <= bits)\n                continue;\n\n            gi.assign(cod_info2);\n            gi.part2_3_length = bits;\n            gi.region0_count = r01_div[r2 - 2];\n            gi.region1_count = r2 - 2 - r01_div[r2 - 2];\n            gi.table_select[0] = r0_tbl[r2 - 2];\n            gi.table_select[1] = r1_tbl[r2 - 2];\n            gi.table_select[2] = r2t;\n        }\n    }\n\n    this.best_huffman_divide = function (gfc, gi) {\n        var cod_info2 = new GrInfo();\n        var ix = gi.l3_enc;\n        var r01_bits = new_int(7 + 15 + 1);\n        var r01_div = new_int(7 + 15 + 1);\n        var r0_tbl = new_int(7 + 15 + 1);\n        var r1_tbl = new_int(7 + 15 + 1);\n\n        /* SHORT BLOCK stuff fails for MPEG2 */\n        if (gi.block_type == Encoder.SHORT_TYPE && gfc.mode_gr == 1)\n            return;\n\n        cod_info2.assign(gi);\n        if (gi.block_type == Encoder.NORM_TYPE) {\n            recalc_divide_init(gfc, gi, ix, r01_bits, r01_div, r0_tbl, r1_tbl);\n            recalc_divide_sub(gfc, cod_info2, gi, ix, r01_bits, r01_div,\n                r0_tbl, r1_tbl);\n        }\n        var i = cod_info2.big_values;\n        if (i == 0 || (ix[i - 2] | ix[i - 1]) > 1)\n            return;\n\n        i = gi.count1 + 2;\n        if (i > 576)\n            return;\n\n        /* Determines the number of bits to encode the quadruples. */\n        cod_info2.assign(gi);\n        cod_info2.count1 = i;\n        var a1 = 0;\n        var a2 = 0;\n\n        assert(i <= 576);\n\n        for (; i > cod_info2.big_values; i -= 4) {\n            var p = ((ix[i - 4] * 2 + ix[i - 3]) * 2 + ix[i - 2]) * 2\n                + ix[i - 1];\n            a1 += Tables.t32l[p];\n            a2 += Tables.t33l[p];\n        }\n        cod_info2.big_values = i;\n\n        cod_info2.count1table_select = 0;\n        if (a1 > a2) {\n            a1 = a2;\n            cod_info2.count1table_select = 1;\n        }\n\n        cod_info2.count1bits = a1;\n\n        if (cod_info2.block_type == Encoder.NORM_TYPE)\n            recalc_divide_sub(gfc, cod_info2, gi, ix, r01_bits, r01_div,\n                r0_tbl, r1_tbl);\n        else {\n            /* Count the number of bits necessary to code the bigvalues region. */\n            cod_info2.part2_3_length = a1;\n            a1 = gfc.scalefac_band.l[7 + 1];\n            if (a1 > i) {\n                a1 = i;\n            }\n            if (a1 > 0) {\n                var bi = new Bits(cod_info2.part2_3_length);\n                cod_info2.table_select[0] = choose_table(ix, 0, a1, bi);\n                cod_info2.part2_3_length = bi.bits;\n            }\n            if (i > a1) {\n                var bi = new Bits(cod_info2.part2_3_length);\n                cod_info2.table_select[1] = choose_table(ix, a1, i, bi);\n                cod_info2.part2_3_length = bi.bits;\n            }\n            if (gi.part2_3_length > cod_info2.part2_3_length)\n                gi.assign(cod_info2);\n        }\n    }\n\n    var slen1_n = [1, 1, 1, 1, 8, 2, 2, 2, 4, 4, 4, 8, 8, 8, 16, 16];\n    var slen2_n = [1, 2, 4, 8, 1, 2, 4, 8, 2, 4, 8, 2, 4, 8, 4, 8];\n    var slen1_tab = [0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4];\n    var slen2_tab = [0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3];\n    Takehiro.slen1_tab = slen1_tab;\n    Takehiro.slen2_tab = slen2_tab;\n\n    function scfsi_calc(ch, l3_side) {\n        var sfb;\n        var gi = l3_side.tt[1][ch];\n        var g0 = l3_side.tt[0][ch];\n\n        for (var i = 0; i < Tables.scfsi_band.length - 1; i++) {\n            for (sfb = Tables.scfsi_band[i]; sfb < Tables.scfsi_band[i + 1]; sfb++) {\n                if (g0.scalefac[sfb] != gi.scalefac[sfb]\n                    && gi.scalefac[sfb] >= 0)\n                    break;\n            }\n            if (sfb == Tables.scfsi_band[i + 1]) {\n                for (sfb = Tables.scfsi_band[i]; sfb < Tables.scfsi_band[i + 1]; sfb++) {\n                    gi.scalefac[sfb] = -1;\n                }\n                l3_side.scfsi[ch][i] = 1;\n            }\n        }\n        var s1 = 0;\n        var c1 = 0;\n        for (sfb = 0; sfb < 11; sfb++) {\n            if (gi.scalefac[sfb] == -1)\n                continue;\n            c1++;\n            if (s1 < gi.scalefac[sfb])\n                s1 = gi.scalefac[sfb];\n        }\n        var s2 = 0;\n        var c2 = 0;\n        for (; sfb < Encoder.SBPSY_l; sfb++) {\n            if (gi.scalefac[sfb] == -1)\n                continue;\n            c2++;\n            if (s2 < gi.scalefac[sfb])\n                s2 = gi.scalefac[sfb];\n        }\n\n        for (var i = 0; i < 16; i++) {\n            if (s1 < slen1_n[i] && s2 < slen2_n[i]) {\n                var c = slen1_tab[i] * c1 + slen2_tab[i] * c2;\n                if (gi.part2_length > c) {\n                    gi.part2_length = c;\n                    gi.scalefac_compress = i;\n                }\n            }\n        }\n    }\n\n    /**\n     * Find the optimal way to store the scalefactors. Only call this routine\n     * after final scalefactors have been chosen and the channel/granule will\n     * not be re-encoded.\n     */\n    this.best_scalefac_store = function (gfc, gr, ch, l3_side) {\n        /* use scalefac_scale if we can */\n        var gi = l3_side.tt[gr][ch];\n        var sfb, i, j, l;\n        var recalc = 0;\n\n        /*\n         * remove scalefacs from bands with ix=0. This idea comes from the AAC\n         * ISO docs. added mt 3/00\n         */\n        /* check if l3_enc=0 */\n        j = 0;\n        for (sfb = 0; sfb < gi.sfbmax; sfb++) {\n            var width = gi.width[sfb];\n            assert(width >= 0);\n            j += width;\n            for (l = -width; l < 0; l++) {\n                if (gi.l3_enc[l + j] != 0)\n                    break;\n            }\n            if (l == 0)\n                gi.scalefac[sfb] = recalc = -2;\n            /* anything goes. */\n            /*\n             * only best_scalefac_store and calc_scfsi know--and only they\n             * should know--about the magic number -2.\n             */\n        }\n\n        if (0 == gi.scalefac_scale && 0 == gi.preflag) {\n            var s = 0;\n            for (sfb = 0; sfb < gi.sfbmax; sfb++)\n                if (gi.scalefac[sfb] > 0)\n                    s |= gi.scalefac[sfb];\n\n            if (0 == (s & 1) && s != 0) {\n                for (sfb = 0; sfb < gi.sfbmax; sfb++)\n                    if (gi.scalefac[sfb] > 0)\n                        gi.scalefac[sfb] >>= 1;\n\n                gi.scalefac_scale = recalc = 1;\n            }\n        }\n\n        if (0 == gi.preflag && gi.block_type != Encoder.SHORT_TYPE\n            && gfc.mode_gr == 2) {\n            for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n                if (gi.scalefac[sfb] < qupvt.pretab[sfb]\n                    && gi.scalefac[sfb] != -2)\n                    break;\n            if (sfb == Encoder.SBPSY_l) {\n                for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n                    if (gi.scalefac[sfb] > 0)\n                        gi.scalefac[sfb] -= qupvt.pretab[sfb];\n\n                gi.preflag = recalc = 1;\n            }\n        }\n\n        for (i = 0; i < 4; i++)\n            l3_side.scfsi[ch][i] = 0;\n\n        if (gfc.mode_gr == 2 && gr == 1\n            && l3_side.tt[0][ch].block_type != Encoder.SHORT_TYPE\n            && l3_side.tt[1][ch].block_type != Encoder.SHORT_TYPE) {\n            scfsi_calc(ch, l3_side);\n            recalc = 0;\n        }\n        for (sfb = 0; sfb < gi.sfbmax; sfb++) {\n            if (gi.scalefac[sfb] == -2) {\n                gi.scalefac[sfb] = 0;\n                /* if anything goes, then 0 is a good choice */\n            }\n        }\n        if (recalc != 0) {\n            if (gfc.mode_gr == 2) {\n                this.scale_bitcount(gi);\n            } else {\n                this.scale_bitcount_lsf(gfc, gi);\n            }\n        }\n    }\n\n    function all_scalefactors_not_negative(scalefac, n) {\n        for (var i = 0; i < n; ++i) {\n            if (scalefac[i] < 0)\n                return false;\n        }\n        return true;\n    }\n\n    /**\n     * number of bits used to encode scalefacs.\n     *\n     * 18*slen1_tab[i] + 18*slen2_tab[i]\n     */\n    var scale_short = [0, 18, 36, 54, 54, 36, 54, 72,\n        54, 72, 90, 72, 90, 108, 108, 126];\n\n    /**\n     * number of bits used to encode scalefacs.\n     *\n     * 17*slen1_tab[i] + 18*slen2_tab[i]\n     */\n    var scale_mixed = [0, 18, 36, 54, 51, 35, 53, 71,\n        52, 70, 88, 69, 87, 105, 104, 122];\n\n    /**\n     * number of bits used to encode scalefacs.\n     *\n     * 11*slen1_tab[i] + 10*slen2_tab[i]\n     */\n    var scale_long = [0, 10, 20, 30, 33, 21, 31, 41, 32, 42,\n        52, 43, 53, 63, 64, 74];\n\n    /**\n     * Also calculates the number of bits necessary to code the scalefactors.\n     */\n    this.scale_bitcount = function (cod_info) {\n        var k, sfb, max_slen1 = 0, max_slen2 = 0;\n\n        /* maximum values */\n        var tab;\n        var scalefac = cod_info.scalefac;\n\n        assert(all_scalefactors_not_negative(scalefac, cod_info.sfbmax));\n\n        if (cod_info.block_type == Encoder.SHORT_TYPE) {\n            tab = scale_short;\n            if (cod_info.mixed_block_flag != 0)\n                tab = scale_mixed;\n        } else { /* block_type == 1,2,or 3 */\n            tab = scale_long;\n            if (0 == cod_info.preflag) {\n                for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n                    if (scalefac[sfb] < qupvt.pretab[sfb])\n                        break;\n\n                if (sfb == Encoder.SBPSY_l) {\n                    cod_info.preflag = 1;\n                    for (sfb = 11; sfb < Encoder.SBPSY_l; sfb++)\n                        scalefac[sfb] -= qupvt.pretab[sfb];\n                }\n            }\n        }\n\n        for (sfb = 0; sfb < cod_info.sfbdivide; sfb++)\n            if (max_slen1 < scalefac[sfb])\n                max_slen1 = scalefac[sfb];\n\n        for (; sfb < cod_info.sfbmax; sfb++)\n            if (max_slen2 < scalefac[sfb])\n                max_slen2 = scalefac[sfb];\n\n        /*\n         * from Takehiro TOMINAGA <tominaga@isoternet.org> 10/99 loop over *all*\n         * posible values of scalefac_compress to find the one which uses the\n         * smallest number of bits. ISO would stop at first valid index\n         */\n        cod_info.part2_length = QuantizePVT.LARGE_BITS;\n        for (k = 0; k < 16; k++) {\n            if (max_slen1 < slen1_n[k] && max_slen2 < slen2_n[k]\n                && cod_info.part2_length > tab[k]) {\n                cod_info.part2_length = tab[k];\n                cod_info.scalefac_compress = k;\n            }\n        }\n        return cod_info.part2_length == QuantizePVT.LARGE_BITS;\n    }\n\n    /**\n     * table of largest scalefactor values for MPEG2\n     */\n    var max_range_sfac_tab = [[15, 15, 7, 7],\n        [15, 15, 7, 0], [7, 3, 0, 0], [15, 31, 31, 0],\n        [7, 7, 7, 0], [3, 3, 0, 0]];\n\n    /**\n     * Also counts the number of bits to encode the scalefacs but for MPEG 2\n     * Lower sampling frequencies (24, 22.05 and 16 kHz.)\n     *\n     * This is reverse-engineered from section 2.4.3.2 of the MPEG2 IS,\n     * \"Audio Decoding Layer III\"\n     */\n    this.scale_bitcount_lsf = function (gfc, cod_info) {\n        var table_number, row_in_table, partition, nr_sfb, window;\n        var over;\n        var i, sfb;\n        var max_sfac = new_int(4);\n//var partition_table;\n        var scalefac = cod_info.scalefac;\n\n        /*\n         * Set partition table. Note that should try to use table one, but do\n         * not yet...\n         */\n        if (cod_info.preflag != 0)\n            table_number = 2;\n        else\n            table_number = 0;\n\n        for (i = 0; i < 4; i++)\n            max_sfac[i] = 0;\n\n        if (cod_info.block_type == Encoder.SHORT_TYPE) {\n            row_in_table = 1;\n            var partition_table = qupvt.nr_of_sfb_block[table_number][row_in_table];\n            for (sfb = 0, partition = 0; partition < 4; partition++) {\n                nr_sfb = partition_table[partition] / 3;\n                for (i = 0; i < nr_sfb; i++, sfb++)\n                    for (window = 0; window < 3; window++)\n                        if (scalefac[sfb * 3 + window] > max_sfac[partition])\n                            max_sfac[partition] = scalefac[sfb * 3 + window];\n            }\n        } else {\n            row_in_table = 0;\n            var partition_table = qupvt.nr_of_sfb_block[table_number][row_in_table];\n            for (sfb = 0, partition = 0; partition < 4; partition++) {\n                nr_sfb = partition_table[partition];\n                for (i = 0; i < nr_sfb; i++, sfb++)\n                    if (scalefac[sfb] > max_sfac[partition])\n                        max_sfac[partition] = scalefac[sfb];\n            }\n        }\n\n        for (over = false, partition = 0; partition < 4; partition++) {\n            if (max_sfac[partition] > max_range_sfac_tab[table_number][partition])\n                over = true;\n        }\n        if (!over) {\n            var slen1, slen2, slen3, slen4;\n\n            cod_info.sfb_partition_table = qupvt.nr_of_sfb_block[table_number][row_in_table];\n            for (partition = 0; partition < 4; partition++)\n                cod_info.slen[partition] = log2tab[max_sfac[partition]];\n\n            /* set scalefac_compress */\n            slen1 = cod_info.slen[0];\n            slen2 = cod_info.slen[1];\n            slen3 = cod_info.slen[2];\n            slen4 = cod_info.slen[3];\n\n            switch (table_number) {\n                case 0:\n                    cod_info.scalefac_compress = (((slen1 * 5) + slen2) << 4)\n                        + (slen3 << 2) + slen4;\n                    break;\n\n                case 1:\n                    cod_info.scalefac_compress = 400 + (((slen1 * 5) + slen2) << 2)\n                        + slen3;\n                    break;\n\n                case 2:\n                    cod_info.scalefac_compress = 500 + (slen1 * 3) + slen2;\n                    break;\n\n                default:\n                    System.err.printf(\"intensity stereo not implemented yet\\n\");\n                    break;\n            }\n        }\n        if (!over) {\n            assert(cod_info.sfb_partition_table != null);\n            cod_info.part2_length = 0;\n            for (partition = 0; partition < 4; partition++)\n                cod_info.part2_length += cod_info.slen[partition]\n                    * cod_info.sfb_partition_table[partition];\n        }\n        return over;\n    }\n\n    /*\n     * Since no bands have been over-amplified, we can set scalefac_compress and\n     * slen[] for the formatter\n     */\n    var log2tab = [0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4,\n        4, 4, 4, 4];\n\n    this.huffman_init = function (gfc) {\n        for (var i = 2; i <= 576; i += 2) {\n            var scfb_anz = 0, bv_index;\n            while (gfc.scalefac_band.l[++scfb_anz] < i)\n                ;\n\n            bv_index = subdv_table[scfb_anz][0]; // .region0_count\n            while (gfc.scalefac_band.l[bv_index + 1] > i)\n                bv_index--;\n\n            if (bv_index < 0) {\n                /*\n                 * this is an indication that everything is going to be encoded\n                 * as region0: bigvalues < region0 < region1 so lets set\n                 * region0, region1 to some value larger than bigvalues\n                 */\n                bv_index = subdv_table[scfb_anz][0]; // .region0_count\n            }\n\n            gfc.bv_scf[i - 2] = bv_index;\n\n            bv_index = subdv_table[scfb_anz][1]; // .region1_count\n            while (gfc.scalefac_band.l[bv_index + gfc.bv_scf[i - 2] + 2] > i)\n                bv_index--;\n\n            if (bv_index < 0) {\n                bv_index = subdv_table[scfb_anz][1]; // .region1_count\n            }\n\n            gfc.bv_scf[i - 1] = bv_index;\n        }\n    }\n}\n\nmodule.exports = Takehiro;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/_lamejs@1.2.1@lamejs/src/js/Takehiro.js\n// module id = /MY8\n// module chunks = 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sourceURL=webpack-internal:////MY8\n')},"/N9a":function(module,exports,__webpack_require__){eval('/*\n * ReplayGainAnalysis - analyzes input samples and give the recommended dB change\n * Copyright (C) 2001 David Robinson and Glen Sawyer\n * Improvements and optimizations added by Frank Klemm, and by Marcel Muller \n *\n * This library is free software; you can redistribute it and/or\n * modify it under the terms of the GNU Lesser General Public\n * License as published by the Free Software Foundation; either\n * version 2.1 of the License, or (at your option) any later version.\n *\n * This library is distributed in the hope that it will be useful,\n * but WITHOUT ANY WARRANTY; without even the implied warranty of\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n * Lesser General Public License for more details.\n *\n * You should have received a copy of the GNU Lesser General Public\n * License along with this library; if not, write to the Free Software\n * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\n *\n * concept and filter values by David Robinson (David@Robinson.org)\n * -- blame him if you think the idea is flawed\n * original coding by Glen Sawyer (mp3gain@hotmail.com)\n * -- blame him if you think this runs too slowly, or the coding is otherwise flawed\n *\n * lots of code improvements by Frank Klemm ( http://www.uni-jena.de/~pfk/mpp/ )\n * -- credit him for all the _good_ programming ;)\n *\n *\n * For an explanation of the concepts and the basic algorithms involved, go to:\n * http://www.replaygain.org/\n */\n\n/*\n * Here\'s the deal. Call\n *\n * InitGainAnalysis ( long samplefreq );\n *\n * to initialize everything. Call\n *\n * AnalyzeSamples ( var Float_t* left_samples,\n * var Float_t* right_samples,\n * size_t num_samples,\n * int num_channels );\n *\n * as many times as you want, with as many or as few samples as you want.\n * If mono, pass the sample buffer in through left_samples, leave\n * right_samples NULL, and make sure num_channels = 1.\n *\n * GetTitleGain()\n *\n * will return the recommended dB level change for all samples analyzed\n * SINCE THE LAST TIME you called GetTitleGain() OR InitGainAnalysis().\n *\n * GetAlbumGain()\n *\n * will return the recommended dB level change for all samples analyzed\n * since InitGainAnalysis() was called and finalized with GetTitleGain().\n *\n * Pseudo-code to process an album:\n *\n * Float_t l_samples [4096];\n * Float_t r_samples [4096];\n * size_t num_samples;\n * unsigned int num_songs;\n * unsigned int i;\n *\n * InitGainAnalysis ( 44100 );\n * for ( i = 1; i <= num_songs; i++ ) {\n * while ( ( num_samples = getSongSamples ( song[i], left_samples, right_samples ) ) > 0 )\n * AnalyzeSamples ( left_samples, right_samples, num_samples, 2 );\n * fprintf ("Recommended dB change for song %2d: %+6.2 dB\\n", i, GetTitleGain() );\n * }\n * fprintf ("Recommended dB change for whole album: %+6.2 dB\\n", GetAlbumGain() );\n */\n\n/*\n * So here\'s the main source of potential code confusion:\n *\n * The filters applied to the incoming samples are IIR filters,\n * meaning they rely on up to number of previous samples\n * AND up to number of previous filtered samples.\n *\n * I set up the AnalyzeSamples routine to minimize memory usage and interface\n * complexity. The speed isn\'t compromised too much (I don\'t think), but the\n * internal complexity is higher than it should be for such a relatively\n * simple routine.\n *\n * Optimization/clarity suggestions are welcome.\n */\nvar common = __webpack_require__("Dkd2");\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\n/**\n * Table entries per dB\n */\nGainAnalysis.STEPS_per_dB = 100.;\n/**\n * Table entries for 0...MAX_dB (normal max. values are 70...80 dB)\n */\nGainAnalysis.MAX_dB = 120.;\nGainAnalysis.GAIN_NOT_ENOUGH_SAMPLES = -24601;\nGainAnalysis.GAIN_ANALYSIS_ERROR = 0;\nGainAnalysis.GAIN_ANALYSIS_OK = 1;\nGainAnalysis.INIT_GAIN_ANALYSIS_ERROR = 0;\nGainAnalysis.INIT_GAIN_ANALYSIS_OK = 1;\n\nGainAnalysis.YULE_ORDER = 10;\nGainAnalysis.MAX_ORDER = GainAnalysis.YULE_ORDER;\n\nGainAnalysis.MAX_SAMP_FREQ = 48000;\nGainAnalysis.RMS_WINDOW_TIME_NUMERATOR = 1;\nGainAnalysis.RMS_WINDOW_TIME_DENOMINATOR = 20;\nGainAnalysis.MAX_SAMPLES_PER_WINDOW = ((GainAnalysis.MAX_SAMP_FREQ * GainAnalysis.RMS_WINDOW_TIME_NUMERATOR) / GainAnalysis.RMS_WINDOW_TIME_DENOMINATOR + 1);\n\nfunction GainAnalysis() {\n /**\n * calibration value for 89dB\n */\n var PINK_REF = 64.82;\n\n var YULE_ORDER = GainAnalysis.YULE_ORDER;\n /**\n * percentile which is louder than the proposed level\n */\n var RMS_PERCENTILE = 0.95;\n /**\n * maximum allowed sample frequency [Hz]\n */\n var MAX_SAMP_FREQ = GainAnalysis.MAX_SAMP_FREQ;\n var RMS_WINDOW_TIME_NUMERATOR = GainAnalysis.RMS_WINDOW_TIME_NUMERATOR;\n /**\n * numerator / denominator = time slice size [s]\n */\n var RMS_WINDOW_TIME_DENOMINATOR = GainAnalysis.RMS_WINDOW_TIME_DENOMINATOR;\n /**\n * max. Samples per Time slice\n */\n var MAX_SAMPLES_PER_WINDOW = GainAnalysis.MAX_SAMPLES_PER_WINDOW;\n\n\n var ABYule = [\n [0.03857599435200, -3.84664617118067, -0.02160367184185,\n 7.81501653005538, -0.00123395316851, -11.34170355132042,\n -0.00009291677959, 13.05504219327545, -0.01655260341619,\n -12.28759895145294, 0.02161526843274, 9.48293806319790,\n -0.02074045215285, -5.87257861775999, 0.00594298065125,\n 2.75465861874613, 0.00306428023191, -0.86984376593551,\n 0.00012025322027, 0.13919314567432, 0.00288463683916],\n [0.05418656406430, -3.47845948550071, -0.02911007808948,\n 6.36317777566148, -0.00848709379851, -8.54751527471874,\n -0.00851165645469, 9.47693607801280, -0.00834990904936,\n -8.81498681370155, 0.02245293253339, 6.85401540936998,\n -0.02596338512915, -4.39470996079559, 0.01624864962975,\n 2.19611684890774, -0.00240879051584, -0.75104302451432,\n 0.00674613682247, 0.13149317958808, -0.00187763777362],\n [0.15457299681924, -2.37898834973084, -0.09331049056315,\n 2.84868151156327, -0.06247880153653, -2.64577170229825,\n 0.02163541888798, 2.23697657451713, -0.05588393329856,\n -1.67148153367602, 0.04781476674921, 1.00595954808547,\n 0.00222312597743, -0.45953458054983, 0.03174092540049,\n 0.16378164858596, -0.01390589421898, -0.05032077717131,\n 0.00651420667831, 0.02347897407020, -0.00881362733839],\n [0.30296907319327, -1.61273165137247, -0.22613988682123,\n 1.07977492259970, -0.08587323730772, -0.25656257754070,\n 0.03282930172664, -0.16276719120440, -0.00915702933434,\n -0.22638893773906, -0.02364141202522, 0.39120800788284,\n -0.00584456039913, -0.22138138954925, 0.06276101321749,\n 0.04500235387352, -0.00000828086748, 0.02005851806501,\n 0.00205861885564, 0.00302439095741, -0.02950134983287],\n [0.33642304856132, -1.49858979367799, -0.25572241425570,\n 0.87350271418188, -0.11828570177555, 0.12205022308084,\n 0.11921148675203, -0.80774944671438, -0.07834489609479,\n 0.47854794562326, -0.00469977914380, -0.12453458140019,\n -0.00589500224440, -0.04067510197014, 0.05724228140351,\n 0.08333755284107, 0.00832043980773, -0.04237348025746,\n -0.01635381384540, 0.02977207319925, -0.01760176568150],\n [0.44915256608450, -0.62820619233671, -0.14351757464547,\n 0.29661783706366, -0.22784394429749, -0.37256372942400,\n -0.01419140100551, 0.00213767857124, 0.04078262797139,\n -0.42029820170918, -0.12398163381748, 0.22199650564824,\n 0.04097565135648, 0.00613424350682, 0.10478503600251,\n 0.06747620744683, -0.01863887810927, 0.05784820375801,\n -0.03193428438915, 0.03222754072173, 0.00541907748707],\n [0.56619470757641, -1.04800335126349, -0.75464456939302,\n 0.29156311971249, 0.16242137742230, -0.26806001042947,\n 0.16744243493672, 0.00819999645858, -0.18901604199609,\n 0.45054734505008, 0.30931782841830, -0.33032403314006,\n -0.27562961986224, 0.06739368333110, 0.00647310677246,\n -0.04784254229033, 0.08647503780351, 0.01639907836189,\n -0.03788984554840, 0.01807364323573, -0.00588215443421],\n [0.58100494960553, -0.51035327095184, -0.53174909058578,\n -0.31863563325245, -0.14289799034253, -0.20256413484477,\n 0.17520704835522, 0.14728154134330, 0.02377945217615,\n 0.38952639978999, 0.15558449135573, -0.23313271880868,\n -0.25344790059353, -0.05246019024463, 0.01628462406333,\n -0.02505961724053, 0.06920467763959, 0.02442357316099,\n -0.03721611395801, 0.01818801111503, -0.00749618797172],\n [0.53648789255105, -0.25049871956020, -0.42163034350696,\n -0.43193942311114, -0.00275953611929, -0.03424681017675,\n 0.04267842219415, -0.04678328784242, -0.10214864179676,\n 0.26408300200955, 0.14590772289388, 0.15113130533216,\n -0.02459864859345, -0.17556493366449, -0.11202315195388,\n -0.18823009262115, -0.04060034127000, 0.05477720428674,\n 0.04788665548180, 0.04704409688120, -0.02217936801134]];\n\n var ABButter = [\n [0.98621192462708, -1.97223372919527, -1.97242384925416,\n 0.97261396931306, 0.98621192462708],\n [0.98500175787242, -1.96977855582618, -1.97000351574484,\n 0.97022847566350, 0.98500175787242],\n [0.97938932735214, -1.95835380975398, -1.95877865470428,\n 0.95920349965459, 0.97938932735214],\n [0.97531843204928, -1.95002759149878, -1.95063686409857,\n 0.95124613669835, 0.97531843204928],\n [0.97316523498161, -1.94561023566527, -1.94633046996323,\n 0.94705070426118, 0.97316523498161],\n [0.96454515552826, -1.92783286977036, -1.92909031105652,\n 0.93034775234268, 0.96454515552826],\n [0.96009142950541, -1.91858953033784, -1.92018285901082,\n 0.92177618768381, 0.96009142950541],\n [0.95856916599601, -1.91542108074780, -1.91713833199203,\n 0.91885558323625, 0.95856916599601],\n [0.94597685600279, -1.88903307939452, -1.89195371200558,\n 0.89487434461664, 0.94597685600279]];\n\n\n /**\n * When calling this procedure, make sure that ip[-order] and op[-order]\n * point to real data\n */\n //private void filterYule(final float[] input, int inputPos, float[] output,\n //int outputPos, int nSamples, final float[] kernel) {\n function filterYule(input, inputPos, output, outputPos, nSamples, kernel) {\n\n while ((nSamples--) != 0) {\n /* 1e-10 is a hack to avoid slowdown because of denormals */\n output[outputPos] = 1e-10 + input[inputPos + 0] * kernel[0]\n - output[outputPos - 1] * kernel[1] + input[inputPos - 1]\n * kernel[2] - output[outputPos - 2] * kernel[3]\n + input[inputPos - 2] * kernel[4] - output[outputPos - 3]\n * kernel[5] + input[inputPos - 3] * kernel[6]\n - output[outputPos - 4] * kernel[7] + input[inputPos - 4]\n * kernel[8] - output[outputPos - 5] * kernel[9]\n + input[inputPos - 5] * kernel[10] - output[outputPos - 6]\n * kernel[11] + input[inputPos - 6] * kernel[12]\n - output[outputPos - 7] * kernel[13] + input[inputPos - 7]\n * kernel[14] - output[outputPos - 8] * kernel[15]\n + input[inputPos - 8] * kernel[16] - output[outputPos - 9]\n * kernel[17] + input[inputPos - 9] * kernel[18]\n - output[outputPos - 10] * kernel[19]\n + input[inputPos - 10] * kernel[20];\n ++outputPos;\n ++inputPos;\n }\n }\n\n//private void filterButter(final float[] input, int inputPos,\n// float[] output, int outputPos, int nSamples, final float[] kernel) {\n function filterButter(input, inputPos, output, outputPos, nSamples, kernel) {\n\n while ((nSamples--) != 0) {\n output[outputPos] = input[inputPos + 0] * kernel[0]\n - output[outputPos - 1] * kernel[1] + input[inputPos - 1]\n * kernel[2] - output[outputPos - 2] * kernel[3]\n + input[inputPos - 2] * kernel[4];\n ++outputPos;\n ++inputPos;\n }\n }\n\n /**\n * @return INIT_GAIN_ANALYSIS_OK if successful, INIT_GAIN_ANALYSIS_ERROR if\n * not\n */\n function ResetSampleFrequency(rgData, samplefreq) {\n /* zero out initial values */\n for (var i = 0; i < MAX_ORDER; i++)\n rgData.linprebuf[i] = rgData.lstepbuf[i] = rgData.loutbuf[i] = rgData.rinprebuf[i] = rgData.rstepbuf[i] = rgData.routbuf[i] = 0.;\n\n switch (0 | (samplefreq)) {\n case 48000:\n rgData.reqindex = 0;\n break;\n case 44100:\n rgData.reqindex = 1;\n break;\n case 32000:\n rgData.reqindex = 2;\n break;\n case 24000:\n rgData.reqindex = 3;\n break;\n case 22050:\n rgData.reqindex = 4;\n break;\n case 16000:\n rgData.reqindex = 5;\n break;\n case 12000:\n rgData.reqindex = 6;\n break;\n case 11025:\n rgData.reqindex = 7;\n break;\n case 8000:\n rgData.reqindex = 8;\n break;\n default:\n return INIT_GAIN_ANALYSIS_ERROR;\n }\n\n rgData.sampleWindow = 0 | ((samplefreq * RMS_WINDOW_TIME_NUMERATOR\n + RMS_WINDOW_TIME_DENOMINATOR - 1) / RMS_WINDOW_TIME_DENOMINATOR);\n\n rgData.lsum = 0.;\n rgData.rsum = 0.;\n rgData.totsamp = 0;\n\n Arrays.ill(rgData.A, 0);\n\n return INIT_GAIN_ANALYSIS_OK;\n }\n\n this.InitGainAnalysis = function (rgData, samplefreq) {\n if (ResetSampleFrequency(rgData, samplefreq) != INIT_GAIN_ANALYSIS_OK) {\n return INIT_GAIN_ANALYSIS_ERROR;\n }\n\n rgData.linpre = MAX_ORDER;\n rgData.rinpre = MAX_ORDER;\n rgData.lstep = MAX_ORDER;\n rgData.rstep = MAX_ORDER;\n rgData.lout = MAX_ORDER;\n rgData.rout = MAX_ORDER;\n\n Arrays.fill(rgData.B, 0);\n\n return INIT_GAIN_ANALYSIS_OK;\n };\n\n /**\n * square\n */\n function fsqr(d) {\n return d * d;\n }\n\n this.AnalyzeSamples = function (rgData, left_samples, left_samplesPos, right_samples, right_samplesPos, num_samples,\n num_channels) {\n var curleft;\n var curleftBase;\n var curright;\n var currightBase;\n var batchsamples;\n var cursamples;\n var cursamplepos;\n\n if (num_samples == 0)\n return GAIN_ANALYSIS_OK;\n\n cursamplepos = 0;\n batchsamples = num_samples;\n\n switch (num_channels) {\n case 1:\n right_samples = left_samples;\n right_samplesPos = left_samplesPos;\n break;\n case 2:\n break;\n default:\n return GAIN_ANALYSIS_ERROR;\n }\n\n if (num_samples < MAX_ORDER) {\n System.arraycopy(left_samples, left_samplesPos, rgData.linprebuf,\n MAX_ORDER, num_samples);\n System.arraycopy(right_samples, right_samplesPos, rgData.rinprebuf,\n MAX_ORDER, num_samples);\n } else {\n System.arraycopy(left_samples, left_samplesPos, rgData.linprebuf,\n MAX_ORDER, MAX_ORDER);\n System.arraycopy(right_samples, right_samplesPos, rgData.rinprebuf,\n MAX_ORDER, MAX_ORDER);\n }\n\n while (batchsamples > 0) {\n cursamples = batchsamples > rgData.sampleWindow - rgData.totsamp ? rgData.sampleWindow\n - rgData.totsamp\n : batchsamples;\n if (cursamplepos < MAX_ORDER) {\n curleft = rgData.linpre + cursamplepos;\n curleftBase = rgData.linprebuf;\n curright = rgData.rinpre + cursamplepos;\n currightBase = rgData.rinprebuf;\n if (cursamples > MAX_ORDER - cursamplepos)\n cursamples = MAX_ORDER - cursamplepos;\n } else {\n curleft = left_samplesPos + cursamplepos;\n curleftBase = left_samples;\n curright = right_samplesPos + cursamplepos;\n currightBase = right_samples;\n }\n\n filterYule(curleftBase, curleft, rgData.lstepbuf, rgData.lstep\n + rgData.totsamp, cursamples, ABYule[rgData.reqindex]);\n filterYule(currightBase, curright, rgData.rstepbuf, rgData.rstep\n + rgData.totsamp, cursamples, ABYule[rgData.reqindex]);\n\n filterButter(rgData.lstepbuf, rgData.lstep + rgData.totsamp,\n rgData.loutbuf, rgData.lout + rgData.totsamp, cursamples,\n ABButter[rgData.reqindex]);\n filterButter(rgData.rstepbuf, rgData.rstep + rgData.totsamp,\n rgData.routbuf, rgData.rout + rgData.totsamp, cursamples,\n ABButter[rgData.reqindex]);\n\n curleft = rgData.lout + rgData.totsamp;\n /* Get the squared values */\n curleftBase = rgData.loutbuf;\n curright = rgData.rout + rgData.totsamp;\n currightBase = rgData.routbuf;\n\n var i = cursamples % 8;\n while ((i--) != 0) {\n rgData.lsum += fsqr(curleftBase[curleft++]);\n rgData.rsum += fsqr(currightBase[curright++]);\n }\n i = cursamples / 8;\n while ((i--) != 0) {\n rgData.lsum += fsqr(curleftBase[curleft + 0])\n + fsqr(curleftBase[curleft + 1])\n + fsqr(curleftBase[curleft + 2])\n + fsqr(curleftBase[curleft + 3])\n + fsqr(curleftBase[curleft + 4])\n + fsqr(curleftBase[curleft + 5])\n + fsqr(curleftBase[curleft + 6])\n + fsqr(curleftBase[curleft + 7]);\n curleft += 8;\n rgData.rsum += fsqr(currightBase[curright + 0])\n + fsqr(currightBase[curright + 1])\n + fsqr(currightBase[curright + 2])\n + fsqr(currightBase[curright + 3])\n + fsqr(currightBase[curright + 4])\n + fsqr(currightBase[curright + 5])\n + fsqr(currightBase[curright + 6])\n + fsqr(currightBase[curright + 7]);\n curright += 8;\n }\n\n batchsamples -= cursamples;\n cursamplepos += cursamples;\n rgData.totsamp += cursamples;\n if (rgData.totsamp == rgData.sampleWindow) {\n /* Get the Root Mean Square (RMS) for this set of samples */\n var val = GainAnalysis.STEPS_per_dB\n * 10.\n * Math.log10((rgData.lsum + rgData.rsum)\n / rgData.totsamp * 0.5 + 1.e-37);\n var ival = (val <= 0) ? 0 : 0 | val;\n if (ival >= rgData.A.length)\n ival = rgData.A.length - 1;\n rgData.A[ival]++;\n rgData.lsum = rgData.rsum = 0.;\n\n System.arraycopy(rgData.loutbuf, rgData.totsamp,\n rgData.loutbuf, 0, MAX_ORDER);\n System.arraycopy(rgData.routbuf, rgData.totsamp,\n rgData.routbuf, 0, MAX_ORDER);\n System.arraycopy(rgData.lstepbuf, rgData.totsamp,\n rgData.lstepbuf, 0, MAX_ORDER);\n System.arraycopy(rgData.rstepbuf, rgData.totsamp,\n rgData.rstepbuf, 0, MAX_ORDER);\n rgData.totsamp = 0;\n }\n if (rgData.totsamp > rgData.sampleWindow) {\n /*\n * somehow I really screwed up: Error in programming! Contact\n * author about totsamp > sampleWindow\n */\n return GAIN_ANALYSIS_ERROR;\n }\n }\n if (num_samples < MAX_ORDER) {\n System.arraycopy(rgData.linprebuf, num_samples, rgData.linprebuf,\n 0, MAX_ORDER - num_samples);\n System.arraycopy(rgData.rinprebuf, num_samples, rgData.rinprebuf,\n 0, MAX_ORDER - num_samples);\n System.arraycopy(left_samples, left_samplesPos, rgData.linprebuf,\n MAX_ORDER - num_samples, num_samples);\n System.arraycopy(right_samples, right_samplesPos, rgData.rinprebuf,\n MAX_ORDER - num_samples, num_samples);\n } else {\n System.arraycopy(left_samples, left_samplesPos + num_samples\n - MAX_ORDER, rgData.linprebuf, 0, MAX_ORDER);\n System.arraycopy(right_samples, right_samplesPos + num_samples\n - MAX_ORDER, rgData.rinprebuf, 0, MAX_ORDER);\n }\n\n return GAIN_ANALYSIS_OK;\n };\n\n function analyzeResult(Array, len) {\n var i;\n\n var elems = 0;\n for (i = 0; i < len; i++)\n elems += Array[i];\n if (elems == 0)\n return GAIN_NOT_ENOUGH_SAMPLES;\n\n var upper = 0 | Math.ceil(elems * (1. - RMS_PERCENTILE));\n for (i = len; i-- > 0;) {\n if ((upper -= Array[i]) <= 0)\n break;\n }\n\n //return (float) ((float) PINK_REF - (float) i / (float) STEPS_per_dB);\n return (PINK_REF - i / GainAnalysis.STEPS_per_dB);\n }\n\n this.GetTitleGain = function (rgData) {\n var retval = analyzeResult(rgData.A, rgData.A.length);\n\n for (var i = 0; i < rgData.A.length; i++) {\n rgData.B[i] += rgData.A[i];\n rgData.A[i] = 0;\n }\n\n for (var i = 0; i < MAX_ORDER; i++)\n rgData.linprebuf[i] = rgData.lstepbuf[i] = rgData.loutbuf[i] = rgData.rinprebuf[i] = rgData.rstepbuf[i] = rgData.routbuf[i] = 0.;\n\n rgData.totsamp = 0;\n rgData.lsum = rgData.rsum = 0.;\n return retval;\n }\n\n}\n\nmodule.exports = GainAnalysis;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"/N9a.js","sources":["webpack:///./node_modules/_lamejs@1.2.1@lamejs/src/js/GainAnalysis.js?fcdf"],"sourcesContent":["/*\n *  ReplayGainAnalysis - analyzes input samples and give the recommended dB change\n *  Copyright (C) 2001 David Robinson and Glen Sawyer\n *  Improvements and optimizations added by Frank Klemm, and by Marcel Muller \n *\n *  This library is free software; you can redistribute it and/or\n *  modify it under the terms of the GNU Lesser General Public\n *  License as published by the Free Software Foundation; either\n *  version 2.1 of the License, or (at your option) any later version.\n *\n *  This library is distributed in the hope that it will be useful,\n *  but WITHOUT ANY WARRANTY; without even the implied warranty of\n *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n *  Lesser General Public License for more details.\n *\n *  You should have received a copy of the GNU Lesser General Public\n *  License along with this library; if not, write to the Free Software\n *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\n *\n *  concept and filter values by David Robinson (David@Robinson.org)\n *    -- blame him if you think the idea is flawed\n *  original coding by Glen Sawyer (mp3gain@hotmail.com)\n *    -- blame him if you think this runs too slowly, or the coding is otherwise flawed\n *\n *  lots of code improvements by Frank Klemm ( http://www.uni-jena.de/~pfk/mpp/ )\n *    -- credit him for all the _good_ programming ;)\n *\n *\n *  For an explanation of the concepts and the basic algorithms involved, go to:\n *    http://www.replaygain.org/\n */\n\n/*\n *  Here's the deal. Call\n *\n *    InitGainAnalysis ( long samplefreq );\n *\n *  to initialize everything. Call\n *\n *    AnalyzeSamples ( var Float_t*  left_samples,\n *                     var Float_t*  right_samples,\n *                     size_t          num_samples,\n *                     int             num_channels );\n *\n *  as many times as you want, with as many or as few samples as you want.\n *  If mono, pass the sample buffer in through left_samples, leave\n *  right_samples NULL, and make sure num_channels = 1.\n *\n *    GetTitleGain()\n *\n *  will return the recommended dB level change for all samples analyzed\n *  SINCE THE LAST TIME you called GetTitleGain() OR InitGainAnalysis().\n *\n *    GetAlbumGain()\n *\n *  will return the recommended dB level change for all samples analyzed\n *  since InitGainAnalysis() was called and finalized with GetTitleGain().\n *\n *  Pseudo-code to process an album:\n *\n *    Float_t       l_samples [4096];\n *    Float_t       r_samples [4096];\n *    size_t        num_samples;\n *    unsigned int  num_songs;\n *    unsigned int  i;\n *\n *    InitGainAnalysis ( 44100 );\n *    for ( i = 1; i <= num_songs; i++ ) {\n *        while ( ( num_samples = getSongSamples ( song[i], left_samples, right_samples ) ) > 0 )\n *            AnalyzeSamples ( left_samples, right_samples, num_samples, 2 );\n *        fprintf (\"Recommended dB change for song %2d: %+6.2 dB\\n\", i, GetTitleGain() );\n *    }\n *    fprintf (\"Recommended dB change for whole album: %+6.2 dB\\n\", GetAlbumGain() );\n */\n\n/*\n *  So here's the main source of potential code confusion:\n *\n *  The filters applied to the incoming samples are IIR filters,\n *  meaning they rely on up to <filter order> number of previous samples\n *  AND up to <filter order> number of previous filtered samples.\n *\n *  I set up the AnalyzeSamples routine to minimize memory usage and interface\n *  complexity. The speed isn't compromised too much (I don't think), but the\n *  internal complexity is higher than it should be for such a relatively\n *  simple routine.\n *\n *  Optimization/clarity suggestions are welcome.\n */\nvar common = require('./common.js');\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\n/**\n * Table entries per dB\n */\nGainAnalysis.STEPS_per_dB = 100.;\n/**\n * Table entries for 0...MAX_dB (normal max. values are 70...80 dB)\n */\nGainAnalysis.MAX_dB = 120.;\nGainAnalysis.GAIN_NOT_ENOUGH_SAMPLES = -24601;\nGainAnalysis.GAIN_ANALYSIS_ERROR = 0;\nGainAnalysis.GAIN_ANALYSIS_OK = 1;\nGainAnalysis.INIT_GAIN_ANALYSIS_ERROR = 0;\nGainAnalysis.INIT_GAIN_ANALYSIS_OK = 1;\n\nGainAnalysis.YULE_ORDER = 10;\nGainAnalysis.MAX_ORDER = GainAnalysis.YULE_ORDER;\n\nGainAnalysis.MAX_SAMP_FREQ = 48000;\nGainAnalysis.RMS_WINDOW_TIME_NUMERATOR = 1;\nGainAnalysis.RMS_WINDOW_TIME_DENOMINATOR = 20;\nGainAnalysis.MAX_SAMPLES_PER_WINDOW = ((GainAnalysis.MAX_SAMP_FREQ * GainAnalysis.RMS_WINDOW_TIME_NUMERATOR) / GainAnalysis.RMS_WINDOW_TIME_DENOMINATOR + 1);\n\nfunction GainAnalysis() {\n    /**\n     * calibration value for 89dB\n     */\n    var PINK_REF = 64.82;\n\n    var YULE_ORDER = GainAnalysis.YULE_ORDER;\n    /**\n     * percentile which is louder than the proposed level\n     */\n    var RMS_PERCENTILE = 0.95;\n    /**\n     * maximum allowed sample frequency [Hz]\n     */\n    var MAX_SAMP_FREQ = GainAnalysis.MAX_SAMP_FREQ;\n    var RMS_WINDOW_TIME_NUMERATOR = GainAnalysis.RMS_WINDOW_TIME_NUMERATOR;\n    /**\n     * numerator / denominator = time slice size [s]\n     */\n    var RMS_WINDOW_TIME_DENOMINATOR = GainAnalysis.RMS_WINDOW_TIME_DENOMINATOR;\n    /**\n     * max. Samples per Time slice\n     */\n    var MAX_SAMPLES_PER_WINDOW = GainAnalysis.MAX_SAMPLES_PER_WINDOW;\n\n\n    var ABYule = [\n        [0.03857599435200, -3.84664617118067, -0.02160367184185,\n            7.81501653005538, -0.00123395316851, -11.34170355132042,\n            -0.00009291677959, 13.05504219327545, -0.01655260341619,\n            -12.28759895145294, 0.02161526843274, 9.48293806319790,\n            -0.02074045215285, -5.87257861775999, 0.00594298065125,\n            2.75465861874613, 0.00306428023191, -0.86984376593551,\n            0.00012025322027, 0.13919314567432, 0.00288463683916],\n        [0.05418656406430, -3.47845948550071, -0.02911007808948,\n            6.36317777566148, -0.00848709379851, -8.54751527471874,\n            -0.00851165645469, 9.47693607801280, -0.00834990904936,\n            -8.81498681370155, 0.02245293253339, 6.85401540936998,\n            -0.02596338512915, -4.39470996079559, 0.01624864962975,\n            2.19611684890774, -0.00240879051584, -0.75104302451432,\n            0.00674613682247, 0.13149317958808, -0.00187763777362],\n        [0.15457299681924, -2.37898834973084, -0.09331049056315,\n            2.84868151156327, -0.06247880153653, -2.64577170229825,\n            0.02163541888798, 2.23697657451713, -0.05588393329856,\n            -1.67148153367602, 0.04781476674921, 1.00595954808547,\n            0.00222312597743, -0.45953458054983, 0.03174092540049,\n            0.16378164858596, -0.01390589421898, -0.05032077717131,\n            0.00651420667831, 0.02347897407020, -0.00881362733839],\n        [0.30296907319327, -1.61273165137247, -0.22613988682123,\n            1.07977492259970, -0.08587323730772, -0.25656257754070,\n            0.03282930172664, -0.16276719120440, -0.00915702933434,\n            -0.22638893773906, -0.02364141202522, 0.39120800788284,\n            -0.00584456039913, -0.22138138954925, 0.06276101321749,\n            0.04500235387352, -0.00000828086748, 0.02005851806501,\n            0.00205861885564, 0.00302439095741, -0.02950134983287],\n        [0.33642304856132, -1.49858979367799, -0.25572241425570,\n            0.87350271418188, -0.11828570177555, 0.12205022308084,\n            0.11921148675203, -0.80774944671438, -0.07834489609479,\n            0.47854794562326, -0.00469977914380, -0.12453458140019,\n            -0.00589500224440, -0.04067510197014, 0.05724228140351,\n            0.08333755284107, 0.00832043980773, -0.04237348025746,\n            -0.01635381384540, 0.02977207319925, -0.01760176568150],\n        [0.44915256608450, -0.62820619233671, -0.14351757464547,\n            0.29661783706366, -0.22784394429749, -0.37256372942400,\n            -0.01419140100551, 0.00213767857124, 0.04078262797139,\n            -0.42029820170918, -0.12398163381748, 0.22199650564824,\n            0.04097565135648, 0.00613424350682, 0.10478503600251,\n            0.06747620744683, -0.01863887810927, 0.05784820375801,\n            -0.03193428438915, 0.03222754072173, 0.00541907748707],\n        [0.56619470757641, -1.04800335126349, -0.75464456939302,\n            0.29156311971249, 0.16242137742230, -0.26806001042947,\n            0.16744243493672, 0.00819999645858, -0.18901604199609,\n            0.45054734505008, 0.30931782841830, -0.33032403314006,\n            -0.27562961986224, 0.06739368333110, 0.00647310677246,\n            -0.04784254229033, 0.08647503780351, 0.01639907836189,\n            -0.03788984554840, 0.01807364323573, -0.00588215443421],\n        [0.58100494960553, -0.51035327095184, -0.53174909058578,\n            -0.31863563325245, -0.14289799034253, -0.20256413484477,\n            0.17520704835522, 0.14728154134330, 0.02377945217615,\n            0.38952639978999, 0.15558449135573, -0.23313271880868,\n            -0.25344790059353, -0.05246019024463, 0.01628462406333,\n            -0.02505961724053, 0.06920467763959, 0.02442357316099,\n            -0.03721611395801, 0.01818801111503, -0.00749618797172],\n        [0.53648789255105, -0.25049871956020, -0.42163034350696,\n            -0.43193942311114, -0.00275953611929, -0.03424681017675,\n            0.04267842219415, -0.04678328784242, -0.10214864179676,\n            0.26408300200955, 0.14590772289388, 0.15113130533216,\n            -0.02459864859345, -0.17556493366449, -0.11202315195388,\n            -0.18823009262115, -0.04060034127000, 0.05477720428674,\n            0.04788665548180, 0.04704409688120, -0.02217936801134]];\n\n    var ABButter = [\n        [0.98621192462708, -1.97223372919527, -1.97242384925416,\n            0.97261396931306, 0.98621192462708],\n        [0.98500175787242, -1.96977855582618, -1.97000351574484,\n            0.97022847566350, 0.98500175787242],\n        [0.97938932735214, -1.95835380975398, -1.95877865470428,\n            0.95920349965459, 0.97938932735214],\n        [0.97531843204928, -1.95002759149878, -1.95063686409857,\n            0.95124613669835, 0.97531843204928],\n        [0.97316523498161, -1.94561023566527, -1.94633046996323,\n            0.94705070426118, 0.97316523498161],\n        [0.96454515552826, -1.92783286977036, -1.92909031105652,\n            0.93034775234268, 0.96454515552826],\n        [0.96009142950541, -1.91858953033784, -1.92018285901082,\n            0.92177618768381, 0.96009142950541],\n        [0.95856916599601, -1.91542108074780, -1.91713833199203,\n            0.91885558323625, 0.95856916599601],\n        [0.94597685600279, -1.88903307939452, -1.89195371200558,\n            0.89487434461664, 0.94597685600279]];\n\n\n    /**\n     * When calling this procedure, make sure that ip[-order] and op[-order]\n     * point to real data\n     */\n    //private void filterYule(final float[] input, int inputPos, float[] output,\n    //int outputPos, int nSamples, final float[] kernel) {\n    function filterYule(input, inputPos, output, outputPos, nSamples, kernel) {\n\n        while ((nSamples--) != 0) {\n            /* 1e-10 is a hack to avoid slowdown because of denormals */\n            output[outputPos] = 1e-10 + input[inputPos + 0] * kernel[0]\n                - output[outputPos - 1] * kernel[1] + input[inputPos - 1]\n                * kernel[2] - output[outputPos - 2] * kernel[3]\n                + input[inputPos - 2] * kernel[4] - output[outputPos - 3]\n                * kernel[5] + input[inputPos - 3] * kernel[6]\n                - output[outputPos - 4] * kernel[7] + input[inputPos - 4]\n                * kernel[8] - output[outputPos - 5] * kernel[9]\n                + input[inputPos - 5] * kernel[10] - output[outputPos - 6]\n                * kernel[11] + input[inputPos - 6] * kernel[12]\n                - output[outputPos - 7] * kernel[13] + input[inputPos - 7]\n                * kernel[14] - output[outputPos - 8] * kernel[15]\n                + input[inputPos - 8] * kernel[16] - output[outputPos - 9]\n                * kernel[17] + input[inputPos - 9] * kernel[18]\n                - output[outputPos - 10] * kernel[19]\n                + input[inputPos - 10] * kernel[20];\n            ++outputPos;\n            ++inputPos;\n        }\n    }\n\n//private void filterButter(final float[] input, int inputPos,\n//    float[] output, int outputPos, int nSamples, final float[] kernel) {\n    function filterButter(input, inputPos, output, outputPos, nSamples, kernel) {\n\n        while ((nSamples--) != 0) {\n            output[outputPos] = input[inputPos + 0] * kernel[0]\n                - output[outputPos - 1] * kernel[1] + input[inputPos - 1]\n                * kernel[2] - output[outputPos - 2] * kernel[3]\n                + input[inputPos - 2] * kernel[4];\n            ++outputPos;\n            ++inputPos;\n        }\n    }\n\n    /**\n     * @return INIT_GAIN_ANALYSIS_OK if successful, INIT_GAIN_ANALYSIS_ERROR if\n     *         not\n     */\n    function ResetSampleFrequency(rgData, samplefreq) {\n        /* zero out initial values */\n        for (var i = 0; i < MAX_ORDER; i++)\n            rgData.linprebuf[i] = rgData.lstepbuf[i] = rgData.loutbuf[i] = rgData.rinprebuf[i] = rgData.rstepbuf[i] = rgData.routbuf[i] = 0.;\n\n        switch (0 | (samplefreq)) {\n            case 48000:\n                rgData.reqindex = 0;\n                break;\n            case 44100:\n                rgData.reqindex = 1;\n                break;\n            case 32000:\n                rgData.reqindex = 2;\n                break;\n            case 24000:\n                rgData.reqindex = 3;\n                break;\n            case 22050:\n                rgData.reqindex = 4;\n                break;\n            case 16000:\n                rgData.reqindex = 5;\n                break;\n            case 12000:\n                rgData.reqindex = 6;\n                break;\n            case 11025:\n                rgData.reqindex = 7;\n                break;\n            case 8000:\n                rgData.reqindex = 8;\n                break;\n            default:\n                return INIT_GAIN_ANALYSIS_ERROR;\n        }\n\n        rgData.sampleWindow = 0 | ((samplefreq * RMS_WINDOW_TIME_NUMERATOR\n            + RMS_WINDOW_TIME_DENOMINATOR - 1) / RMS_WINDOW_TIME_DENOMINATOR);\n\n        rgData.lsum = 0.;\n        rgData.rsum = 0.;\n        rgData.totsamp = 0;\n\n        Arrays.ill(rgData.A, 0);\n\n        return INIT_GAIN_ANALYSIS_OK;\n    }\n\n    this.InitGainAnalysis = function (rgData, samplefreq) {\n        if (ResetSampleFrequency(rgData, samplefreq) != INIT_GAIN_ANALYSIS_OK) {\n            return INIT_GAIN_ANALYSIS_ERROR;\n        }\n\n        rgData.linpre = MAX_ORDER;\n        rgData.rinpre = MAX_ORDER;\n        rgData.lstep = MAX_ORDER;\n        rgData.rstep = MAX_ORDER;\n        rgData.lout = MAX_ORDER;\n        rgData.rout = MAX_ORDER;\n\n        Arrays.fill(rgData.B, 0);\n\n        return INIT_GAIN_ANALYSIS_OK;\n    };\n\n    /**\n     * square\n     */\n    function fsqr(d) {\n        return d * d;\n    }\n\n    this.AnalyzeSamples = function (rgData, left_samples, left_samplesPos, right_samples, right_samplesPos, num_samples,\n                                    num_channels) {\n        var curleft;\n        var curleftBase;\n        var curright;\n        var currightBase;\n        var batchsamples;\n        var cursamples;\n        var cursamplepos;\n\n        if (num_samples == 0)\n            return GAIN_ANALYSIS_OK;\n\n        cursamplepos = 0;\n        batchsamples = num_samples;\n\n        switch (num_channels) {\n            case 1:\n                right_samples = left_samples;\n                right_samplesPos = left_samplesPos;\n                break;\n            case 2:\n                break;\n            default:\n                return GAIN_ANALYSIS_ERROR;\n        }\n\n        if (num_samples < MAX_ORDER) {\n            System.arraycopy(left_samples, left_samplesPos, rgData.linprebuf,\n                MAX_ORDER, num_samples);\n            System.arraycopy(right_samples, right_samplesPos, rgData.rinprebuf,\n                MAX_ORDER, num_samples);\n        } else {\n            System.arraycopy(left_samples, left_samplesPos, rgData.linprebuf,\n                MAX_ORDER, MAX_ORDER);\n            System.arraycopy(right_samples, right_samplesPos, rgData.rinprebuf,\n                MAX_ORDER, MAX_ORDER);\n        }\n\n        while (batchsamples > 0) {\n            cursamples = batchsamples > rgData.sampleWindow - rgData.totsamp ? rgData.sampleWindow\n            - rgData.totsamp\n                : batchsamples;\n            if (cursamplepos < MAX_ORDER) {\n                curleft = rgData.linpre + cursamplepos;\n                curleftBase = rgData.linprebuf;\n                curright = rgData.rinpre + cursamplepos;\n                currightBase = rgData.rinprebuf;\n                if (cursamples > MAX_ORDER - cursamplepos)\n                    cursamples = MAX_ORDER - cursamplepos;\n            } else {\n                curleft = left_samplesPos + cursamplepos;\n                curleftBase = left_samples;\n                curright = right_samplesPos + cursamplepos;\n                currightBase = right_samples;\n            }\n\n            filterYule(curleftBase, curleft, rgData.lstepbuf, rgData.lstep\n                + rgData.totsamp, cursamples, ABYule[rgData.reqindex]);\n            filterYule(currightBase, curright, rgData.rstepbuf, rgData.rstep\n                + rgData.totsamp, cursamples, ABYule[rgData.reqindex]);\n\n            filterButter(rgData.lstepbuf, rgData.lstep + rgData.totsamp,\n                rgData.loutbuf, rgData.lout + rgData.totsamp, cursamples,\n                ABButter[rgData.reqindex]);\n            filterButter(rgData.rstepbuf, rgData.rstep + rgData.totsamp,\n                rgData.routbuf, rgData.rout + rgData.totsamp, cursamples,\n                ABButter[rgData.reqindex]);\n\n            curleft = rgData.lout + rgData.totsamp;\n            /* Get the squared values */\n            curleftBase = rgData.loutbuf;\n            curright = rgData.rout + rgData.totsamp;\n            currightBase = rgData.routbuf;\n\n            var i = cursamples % 8;\n            while ((i--) != 0) {\n                rgData.lsum += fsqr(curleftBase[curleft++]);\n                rgData.rsum += fsqr(currightBase[curright++]);\n            }\n            i = cursamples / 8;\n            while ((i--) != 0) {\n                rgData.lsum += fsqr(curleftBase[curleft + 0])\n                    + fsqr(curleftBase[curleft + 1])\n                    + fsqr(curleftBase[curleft + 2])\n                    + fsqr(curleftBase[curleft + 3])\n                    + fsqr(curleftBase[curleft + 4])\n                    + fsqr(curleftBase[curleft + 5])\n                    + fsqr(curleftBase[curleft + 6])\n                    + fsqr(curleftBase[curleft + 7]);\n                curleft += 8;\n                rgData.rsum += fsqr(currightBase[curright + 0])\n                    + fsqr(currightBase[curright + 1])\n                    + fsqr(currightBase[curright + 2])\n                    + fsqr(currightBase[curright + 3])\n                    + fsqr(currightBase[curright + 4])\n                    + fsqr(currightBase[curright + 5])\n                    + fsqr(currightBase[curright + 6])\n                    + fsqr(currightBase[curright + 7]);\n                curright += 8;\n            }\n\n            batchsamples -= cursamples;\n            cursamplepos += cursamples;\n            rgData.totsamp += cursamples;\n            if (rgData.totsamp == rgData.sampleWindow) {\n                /* Get the Root Mean Square (RMS) for this set of samples */\n                var val = GainAnalysis.STEPS_per_dB\n                    * 10.\n                    * Math.log10((rgData.lsum + rgData.rsum)\n                        / rgData.totsamp * 0.5 + 1.e-37);\n                var ival = (val <= 0) ? 0 : 0 | val;\n                if (ival >= rgData.A.length)\n                    ival = rgData.A.length - 1;\n                rgData.A[ival]++;\n                rgData.lsum = rgData.rsum = 0.;\n\n                System.arraycopy(rgData.loutbuf, rgData.totsamp,\n                    rgData.loutbuf, 0, MAX_ORDER);\n                System.arraycopy(rgData.routbuf, rgData.totsamp,\n                    rgData.routbuf, 0, MAX_ORDER);\n                System.arraycopy(rgData.lstepbuf, rgData.totsamp,\n                    rgData.lstepbuf, 0, MAX_ORDER);\n                System.arraycopy(rgData.rstepbuf, rgData.totsamp,\n                    rgData.rstepbuf, 0, MAX_ORDER);\n                rgData.totsamp = 0;\n            }\n            if (rgData.totsamp > rgData.sampleWindow) {\n                /*\n                 * somehow I really screwed up: Error in programming! Contact\n                 * author about totsamp > sampleWindow\n                 */\n                return GAIN_ANALYSIS_ERROR;\n            }\n        }\n        if (num_samples < MAX_ORDER) {\n            System.arraycopy(rgData.linprebuf, num_samples, rgData.linprebuf,\n                0, MAX_ORDER - num_samples);\n            System.arraycopy(rgData.rinprebuf, num_samples, rgData.rinprebuf,\n                0, MAX_ORDER - num_samples);\n            System.arraycopy(left_samples, left_samplesPos, rgData.linprebuf,\n                MAX_ORDER - num_samples, num_samples);\n            System.arraycopy(right_samples, right_samplesPos, rgData.rinprebuf,\n                MAX_ORDER - num_samples, num_samples);\n        } else {\n            System.arraycopy(left_samples, left_samplesPos + num_samples\n                - MAX_ORDER, rgData.linprebuf, 0, MAX_ORDER);\n            System.arraycopy(right_samples, right_samplesPos + num_samples\n                - MAX_ORDER, rgData.rinprebuf, 0, MAX_ORDER);\n        }\n\n        return GAIN_ANALYSIS_OK;\n    };\n\n    function analyzeResult(Array, len) {\n        var i;\n\n        var elems = 0;\n        for (i = 0; i < len; i++)\n            elems += Array[i];\n        if (elems == 0)\n            return GAIN_NOT_ENOUGH_SAMPLES;\n\n        var upper = 0 | Math.ceil(elems * (1. - RMS_PERCENTILE));\n        for (i = len; i-- > 0;) {\n            if ((upper -= Array[i]) <= 0)\n                break;\n        }\n\n        //return (float) ((float) PINK_REF - (float) i / (float) STEPS_per_dB);\n        return (PINK_REF - i / GainAnalysis.STEPS_per_dB);\n    }\n\n    this.GetTitleGain = function (rgData) {\n        var retval = analyzeResult(rgData.A, rgData.A.length);\n\n        for (var i = 0; i < rgData.A.length; i++) {\n            rgData.B[i] += rgData.A[i];\n            rgData.A[i] = 0;\n        }\n\n        for (var i = 0; i < MAX_ORDER; i++)\n            rgData.linprebuf[i] = rgData.lstepbuf[i] = rgData.loutbuf[i] = rgData.rinprebuf[i] = rgData.rstepbuf[i] = rgData.routbuf[i] = 0.;\n\n        rgData.totsamp = 0;\n        rgData.lsum = rgData.rsum = 0.;\n        return retval;\n    }\n\n}\n\nmodule.exports = GainAnalysis;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/_lamejs@1.2.1@lamejs/src/js/GainAnalysis.js\n// module id = /N9a\n// module chunks = 2"],"mappings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sourceRoot":""}\n//# sourceURL=webpack-internal:////N9a\n')},"/bQp":function(module,exports){eval("module.exports = {};\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiL2JRcC5qcyIsInNvdXJjZXMiOlsid2VicGFjazovLy8uL25vZGVfbW9kdWxlcy9jb3JlLWpzL2xpYnJhcnkvbW9kdWxlcy9faXRlcmF0b3JzLmpzP2ZkYjQiXSwic291cmNlc0NvbnRlbnQiOlsibW9kdWxlLmV4cG9ydHMgPSB7fTtcblxuXG5cbi8vLy8vLy8vLy8vLy8vLy8vL1xuLy8gV0VCUEFDSyBGT09URVJcbi8vIC4vbm9kZV9tb2R1bGVzL2NvcmUtanMvbGlicmFyeS9tb2R1bGVzL19pdGVyYXRvcnMuanNcbi8vIG1vZHVsZSBpZCA9IC9iUXBcbi8vIG1vZHVsZSBjaHVua3MgPSAyIl0sIm1hcHBpbmdzIjoiQUFBQTsiLCJzb3VyY2VSb290IjoiIn0=\n//# sourceURL=webpack-internal:////bQp\n")},"/dO2":function(module,__webpack_exports__,__webpack_require__){"use strict";eval("Object.defineProperty(__webpack_exports__, \"__esModule\", { value: true });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"MultiDrag\", function() { return MultiDragPlugin; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"Sortable\", function() { return Sortable; });\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"Swap\", function() { return SwapPlugin; });\n/**!\n * Sortable 1.10.2\n * @author\tRubaXa \n * @author\towenm \n * @license MIT\n */\nfunction _typeof(obj) {\n if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n _typeof = function (obj) {\n return typeof obj;\n };\n } else {\n _typeof = function (obj) {\n return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n };\n }\n\n return _typeof(obj);\n}\n\nfunction _defineProperty(obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n}\n\nfunction _extends() {\n _extends = Object.assign || function (target) {\n for (var i = 1; 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'add' : 'remove'](name);\n } else {\n var className = (' ' + el.className + ' ').replace(R_SPACE, ' ').replace(' ' + name + ' ', ' ');\n el.className = (className + (state ? ' ' + name : '')).replace(R_SPACE, ' ');\n }\n }\n}\n\nfunction css(el, prop, val) {\n var style = el && el.style;\n\n if (style) {\n if (val === void 0) {\n if (document.defaultView && document.defaultView.getComputedStyle) {\n val = document.defaultView.getComputedStyle(el, '');\n } else if (el.currentStyle) {\n val = el.currentStyle;\n }\n\n return prop === void 0 ? val : val[prop];\n } else {\n if (!(prop in style) && prop.indexOf('webkit') === -1) {\n prop = '-webkit-' + prop;\n }\n\n style[prop] = val + (typeof val === 'string' ? '' : 'px');\n }\n }\n}\n\nfunction matrix(el, selfOnly) {\n var appliedTransforms = '';\n\n if (typeof el === 'string') {\n appliedTransforms = el;\n } else {\n do {\n var transform = css(el, 'transform');\n\n if (transform && transform !== 'none') {\n appliedTransforms = transform + ' ' + appliedTransforms;\n }\n /* jshint boss:true */\n\n } while (!selfOnly && (el = el.parentNode));\n }\n\n var matrixFn = window.DOMMatrix || window.WebKitCSSMatrix || window.CSSMatrix || window.MSCSSMatrix;\n /*jshint -W056 */\n\n return matrixFn && new matrixFn(appliedTransforms);\n}\n\nfunction find(ctx, tagName, iterator) {\n if (ctx) {\n var list = ctx.getElementsByTagName(tagName),\n i = 0,\n n = list.length;\n\n if (iterator) {\n for (; i < n; i++) {\n iterator(list[i], i);\n }\n }\n\n return list;\n }\n\n return [];\n}\n\nfunction getWindowScrollingElement() {\n var scrollingElement = document.scrollingElement;\n\n if (scrollingElement) {\n return scrollingElement;\n } else {\n return document.documentElement;\n }\n}\n/**\r\n * Returns the \"bounding client rect\" of given element\r\n * @param {HTMLElement} el The element whose boundingClientRect is wanted\r\n * @param {[Boolean]} relativeToContainingBlock Whether the rect should be relative to the containing block of (including) the container\r\n * @param {[Boolean]} relativeToNonStaticParent Whether the rect should be relative to the relative parent of (including) the contaienr\r\n * @param {[Boolean]} undoScale Whether the container's scale() should be undone\r\n * @param {[HTMLElement]} container The parent the element will be placed in\r\n * @return {Object} The boundingClientRect of el, with specified adjustments\r\n */\n\n\nfunction getRect(el, relativeToContainingBlock, relativeToNonStaticParent, undoScale, container) {\n if (!el.getBoundingClientRect && el !== window) return;\n var elRect, top, left, bottom, right, height, width;\n\n if (el !== window && el !== getWindowScrollingElement()) {\n elRect = el.getBoundingClientRect();\n top = elRect.top;\n left = elRect.left;\n bottom = elRect.bottom;\n right = elRect.right;\n height = elRect.height;\n width = elRect.width;\n } else {\n top = 0;\n left = 0;\n bottom = window.innerHeight;\n right = window.innerWidth;\n height = window.innerHeight;\n width = window.innerWidth;\n }\n\n if ((relativeToContainingBlock || relativeToNonStaticParent) && el !== window) {\n // Adjust for translate()\n container = container || el.parentNode; // solves #1123 (see: https://stackoverflow.com/a/37953806/6088312)\n // Not needed on <= IE11\n\n if (!IE11OrLess) {\n do {\n if (container && container.getBoundingClientRect && (css(container, 'transform') !== 'none' || relativeToNonStaticParent && css(container, 'position') !== 'static')) {\n var containerRect = container.getBoundingClientRect(); // Set relative to edges of padding box of container\n\n top -= containerRect.top + parseInt(css(container, 'border-top-width'));\n left -= containerRect.left + parseInt(css(container, 'border-left-width'));\n bottom = top + elRect.height;\n right = left + elRect.width;\n break;\n }\n /* jshint boss:true */\n\n } while (container = container.parentNode);\n }\n }\n\n if (undoScale && el !== window) {\n // Adjust for scale()\n var elMatrix = matrix(container || el),\n scaleX = elMatrix && elMatrix.a,\n scaleY = elMatrix && elMatrix.d;\n\n if (elMatrix) {\n top /= scaleY;\n left /= scaleX;\n width /= scaleX;\n height /= scaleY;\n bottom = top + height;\n right = left + width;\n }\n }\n\n return {\n top: top,\n left: left,\n bottom: bottom,\n right: right,\n width: width,\n height: height\n };\n}\n/**\r\n * Checks if a side of an element is scrolled past a side of its parents\r\n * @param {HTMLElement} el The element who's side being scrolled out of view is in question\r\n * @param {String} elSide Side of the element in question ('top', 'left', 'right', 'bottom')\r\n * @param {String} parentSide Side of the parent in question ('top', 'left', 'right', 'bottom')\r\n * @return {HTMLElement} The parent scroll element that the el's side is scrolled past, or null if there is no such element\r\n */\n\n\nfunction isScrolledPast(el, elSide, parentSide) {\n var parent = getParentAutoScrollElement(el, true),\n elSideVal = getRect(el)[elSide];\n /* jshint boss:true */\n\n while (parent) {\n var parentSideVal = getRect(parent)[parentSide],\n visible = void 0;\n\n if (parentSide === 'top' || parentSide === 'left') {\n visible = elSideVal >= parentSideVal;\n } else {\n visible = elSideVal <= parentSideVal;\n }\n\n if (!visible) return parent;\n if (parent === getWindowScrollingElement()) break;\n parent = getParentAutoScrollElement(parent, false);\n }\n\n return false;\n}\n/**\r\n * Gets nth child of el, ignoring hidden children, sortable's elements (does not ignore clone if it's visible)\r\n * and non-draggable elements\r\n * @param {HTMLElement} el The parent element\r\n * @param {Number} childNum The index of the child\r\n * @param {Object} options Parent Sortable's options\r\n * @return {HTMLElement} The child at index childNum, or null if not found\r\n */\n\n\nfunction getChild(el, childNum, options) {\n var currentChild = 0,\n i = 0,\n children = el.children;\n\n while (i < children.length) {\n if (children[i].style.display !== 'none' && children[i] !== Sortable.ghost && children[i] !== Sortable.dragged && closest(children[i], options.draggable, el, false)) {\n if (currentChild === childNum) {\n return children[i];\n }\n\n currentChild++;\n }\n\n i++;\n }\n\n return null;\n}\n/**\r\n * Gets the last child in the el, ignoring ghostEl or invisible elements (clones)\r\n * @param {HTMLElement} el Parent element\r\n * @param {selector} selector Any other elements that should be ignored\r\n * @return {HTMLElement} The last child, ignoring ghostEl\r\n */\n\n\nfunction lastChild(el, selector) {\n var last = el.lastElementChild;\n\n while (last && (last === Sortable.ghost || css(last, 'display') === 'none' || selector && !matches(last, selector))) {\n last = last.previousElementSibling;\n }\n\n return last || null;\n}\n/**\r\n * Returns the index of an element within its parent for a selected set of\r\n * elements\r\n * @param {HTMLElement} el\r\n * @param {selector} selector\r\n * @return {number}\r\n */\n\n\nfunction index(el, selector) {\n var index = 0;\n\n if (!el || !el.parentNode) {\n return -1;\n }\n /* jshint boss:true */\n\n\n while (el = el.previousElementSibling) {\n if (el.nodeName.toUpperCase() !== 'TEMPLATE' && el !== Sortable.clone && (!selector || matches(el, selector))) {\n index++;\n }\n }\n\n return index;\n}\n/**\r\n * Returns the scroll offset of the given element, added with all the scroll offsets of parent elements.\r\n * The value is returned in real pixels.\r\n * @param {HTMLElement} el\r\n * @return {Array} Offsets in the format of [left, top]\r\n */\n\n\nfunction getRelativeScrollOffset(el) {\n var offsetLeft = 0,\n offsetTop = 0,\n winScroller = getWindowScrollingElement();\n\n if (el) {\n do {\n var elMatrix = matrix(el),\n scaleX = elMatrix.a,\n scaleY = elMatrix.d;\n offsetLeft += el.scrollLeft * scaleX;\n offsetTop += el.scrollTop * scaleY;\n } while (el !== winScroller && (el = el.parentNode));\n }\n\n return [offsetLeft, offsetTop];\n}\n/**\r\n * Returns the index of the object within the given array\r\n * @param {Array} arr Array that may or may not hold the object\r\n * @param {Object} obj An object that has a key-value pair unique to and identical to a key-value pair in the object you want to find\r\n * @return {Number} The index of the object in the array, or -1\r\n */\n\n\nfunction indexOfObject(arr, obj) {\n for (var i in arr) {\n if (!arr.hasOwnProperty(i)) continue;\n\n for (var key in obj) {\n if (obj.hasOwnProperty(key) && obj[key] === arr[i][key]) return Number(i);\n }\n }\n\n return -1;\n}\n\nfunction getParentAutoScrollElement(el, includeSelf) {\n // skip to window\n if (!el || !el.getBoundingClientRect) return getWindowScrollingElement();\n var elem = el;\n var gotSelf = false;\n\n do {\n // we don't need to get elem css if it isn't even overflowing in the first place (performance)\n if (elem.clientWidth < elem.scrollWidth || elem.clientHeight < elem.scrollHeight) {\n var elemCSS = css(elem);\n\n if (elem.clientWidth < elem.scrollWidth && (elemCSS.overflowX == 'auto' || elemCSS.overflowX == 'scroll') || elem.clientHeight < elem.scrollHeight && (elemCSS.overflowY == 'auto' || elemCSS.overflowY == 'scroll')) {\n if (!elem.getBoundingClientRect || elem === document.body) return getWindowScrollingElement();\n if (gotSelf || includeSelf) return elem;\n gotSelf = true;\n }\n }\n /* jshint boss:true */\n\n } while (elem = elem.parentNode);\n\n return getWindowScrollingElement();\n}\n\nfunction extend(dst, src) {\n if (dst && src) {\n for (var key in src) {\n if (src.hasOwnProperty(key)) {\n dst[key] = src[key];\n }\n }\n }\n\n return dst;\n}\n\nfunction isRectEqual(rect1, rect2) {\n return Math.round(rect1.top) === Math.round(rect2.top) && Math.round(rect1.left) === Math.round(rect2.left) && Math.round(rect1.height) === Math.round(rect2.height) && Math.round(rect1.width) === Math.round(rect2.width);\n}\n\nvar _throttleTimeout;\n\nfunction throttle(callback, ms) {\n return function () {\n if (!_throttleTimeout) {\n var args = arguments,\n _this = this;\n\n if (args.length === 1) {\n callback.call(_this, args[0]);\n } else {\n callback.apply(_this, args);\n }\n\n _throttleTimeout = setTimeout(function () {\n _throttleTimeout = void 0;\n }, ms);\n }\n };\n}\n\nfunction cancelThrottle() {\n clearTimeout(_throttleTimeout);\n _throttleTimeout = void 0;\n}\n\nfunction scrollBy(el, x, y) {\n el.scrollLeft += x;\n el.scrollTop += y;\n}\n\nfunction clone(el) {\n var Polymer = window.Polymer;\n var $ = window.jQuery || window.Zepto;\n\n if (Polymer && Polymer.dom) {\n return Polymer.dom(el).cloneNode(true);\n } else if ($) {\n return $(el).clone(true)[0];\n } else {\n return el.cloneNode(true);\n }\n}\n\nfunction setRect(el, rect) {\n css(el, 'position', 'absolute');\n css(el, 'top', rect.top);\n css(el, 'left', rect.left);\n css(el, 'width', rect.width);\n css(el, 'height', rect.height);\n}\n\nfunction unsetRect(el) {\n css(el, 'position', '');\n css(el, 'top', '');\n css(el, 'left', '');\n css(el, 'width', '');\n css(el, 'height', '');\n}\n\nvar expando = 'Sortable' + new Date().getTime();\n\nfunction AnimationStateManager() {\n var animationStates = [],\n animationCallbackId;\n return {\n captureAnimationState: function captureAnimationState() {\n animationStates = [];\n if (!this.options.animation) return;\n var children = [].slice.call(this.el.children);\n children.forEach(function (child) {\n if (css(child, 'display') === 'none' || child === Sortable.ghost) return;\n animationStates.push({\n target: child,\n rect: getRect(child)\n });\n\n var fromRect = _objectSpread({}, animationStates[animationStates.length - 1].rect); // If animating: compensate for current animation\n\n\n if (child.thisAnimationDuration) {\n var childMatrix = matrix(child, true);\n\n if (childMatrix) {\n fromRect.top -= childMatrix.f;\n fromRect.left -= childMatrix.e;\n }\n }\n\n child.fromRect = fromRect;\n });\n },\n addAnimationState: function addAnimationState(state) {\n animationStates.push(state);\n },\n removeAnimationState: function removeAnimationState(target) {\n animationStates.splice(indexOfObject(animationStates, {\n target: target\n }), 1);\n },\n animateAll: function animateAll(callback) {\n var _this = this;\n\n if (!this.options.animation) {\n clearTimeout(animationCallbackId);\n if (typeof callback === 'function') callback();\n return;\n }\n\n var animating = false,\n animationTime = 0;\n animationStates.forEach(function (state) {\n var time = 0,\n target = state.target,\n fromRect = target.fromRect,\n toRect = getRect(target),\n prevFromRect = target.prevFromRect,\n prevToRect = target.prevToRect,\n animatingRect = state.rect,\n targetMatrix = matrix(target, true);\n\n if (targetMatrix) {\n // Compensate for current animation\n toRect.top -= targetMatrix.f;\n toRect.left -= targetMatrix.e;\n }\n\n target.toRect = toRect;\n\n if (target.thisAnimationDuration) {\n // Could also check if animatingRect is between fromRect and toRect\n if (isRectEqual(prevFromRect, toRect) && !isRectEqual(fromRect, toRect) && // Make sure animatingRect is on line between toRect & fromRect\n (animatingRect.top - toRect.top) / (animatingRect.left - toRect.left) === (fromRect.top - toRect.top) / (fromRect.left - toRect.left)) {\n // If returning to same place as started from animation and on same axis\n time = calculateRealTime(animatingRect, prevFromRect, prevToRect, _this.options);\n }\n } // if fromRect != toRect: animate\n\n\n if (!isRectEqual(toRect, fromRect)) {\n target.prevFromRect = fromRect;\n target.prevToRect = toRect;\n\n if (!time) {\n time = _this.options.animation;\n }\n\n _this.animate(target, animatingRect, toRect, time);\n }\n\n if (time) {\n animating = true;\n animationTime = Math.max(animationTime, time);\n clearTimeout(target.animationResetTimer);\n target.animationResetTimer = setTimeout(function () {\n target.animationTime = 0;\n target.prevFromRect = null;\n target.fromRect = null;\n target.prevToRect = null;\n target.thisAnimationDuration = null;\n }, time);\n target.thisAnimationDuration = time;\n }\n });\n clearTimeout(animationCallbackId);\n\n if (!animating) {\n if (typeof callback === 'function') callback();\n } else {\n animationCallbackId = setTimeout(function () {\n if (typeof callback === 'function') callback();\n }, animationTime);\n }\n\n animationStates = [];\n },\n animate: function animate(target, currentRect, toRect, duration) {\n if (duration) {\n css(target, 'transition', '');\n css(target, 'transform', '');\n var elMatrix = matrix(this.el),\n scaleX = elMatrix && elMatrix.a,\n scaleY = elMatrix && elMatrix.d,\n translateX = (currentRect.left - toRect.left) / (scaleX || 1),\n translateY = (currentRect.top - toRect.top) / (scaleY || 1);\n target.animatingX = !!translateX;\n target.animatingY = !!translateY;\n css(target, 'transform', 'translate3d(' + translateX + 'px,' + translateY + 'px,0)');\n repaint(target); // repaint\n\n css(target, 'transition', 'transform ' + duration + 'ms' + (this.options.easing ? ' ' + this.options.easing : ''));\n css(target, 'transform', 'translate3d(0,0,0)');\n typeof target.animated === 'number' && clearTimeout(target.animated);\n target.animated = setTimeout(function () {\n css(target, 'transition', '');\n css(target, 'transform', '');\n target.animated = false;\n target.animatingX = false;\n target.animatingY = false;\n }, duration);\n }\n }\n };\n}\n\nfunction repaint(target) {\n return target.offsetWidth;\n}\n\nfunction calculateRealTime(animatingRect, fromRect, toRect, options) {\n return Math.sqrt(Math.pow(fromRect.top - animatingRect.top, 2) + Math.pow(fromRect.left - animatingRect.left, 2)) / Math.sqrt(Math.pow(fromRect.top - toRect.top, 2) + Math.pow(fromRect.left - toRect.left, 2)) * options.animation;\n}\n\nvar plugins = [];\nvar defaults = {\n initializeByDefault: true\n};\nvar PluginManager = {\n mount: function mount(plugin) {\n // Set default static properties\n for (var option in defaults) {\n if (defaults.hasOwnProperty(option) && !(option in plugin)) {\n plugin[option] = defaults[option];\n }\n }\n\n plugins.push(plugin);\n },\n pluginEvent: function pluginEvent(eventName, sortable, evt) {\n var _this = this;\n\n this.eventCanceled = false;\n\n evt.cancel = function () {\n _this.eventCanceled = true;\n };\n\n var eventNameGlobal = eventName + 'Global';\n plugins.forEach(function (plugin) {\n if (!sortable[plugin.pluginName]) return; // Fire global events if it exists in this sortable\n\n if (sortable[plugin.pluginName][eventNameGlobal]) {\n sortable[plugin.pluginName][eventNameGlobal](_objectSpread({\n sortable: sortable\n }, evt));\n } // Only fire plugin event if plugin is enabled in this sortable,\n // and plugin has event defined\n\n\n if (sortable.options[plugin.pluginName] && sortable[plugin.pluginName][eventName]) {\n sortable[plugin.pluginName][eventName](_objectSpread({\n sortable: sortable\n }, evt));\n }\n });\n },\n initializePlugins: function initializePlugins(sortable, el, defaults, options) {\n plugins.forEach(function (plugin) {\n var pluginName = plugin.pluginName;\n if (!sortable.options[pluginName] && !plugin.initializeByDefault) return;\n var initialized = new plugin(sortable, el, sortable.options);\n initialized.sortable = sortable;\n initialized.options = sortable.options;\n sortable[pluginName] = initialized; // Add default options from plugin\n\n _extends(defaults, initialized.defaults);\n });\n\n for (var option in sortable.options) {\n if (!sortable.options.hasOwnProperty(option)) continue;\n var modified = this.modifyOption(sortable, option, sortable.options[option]);\n\n if (typeof modified !== 'undefined') {\n sortable.options[option] = modified;\n }\n }\n },\n getEventProperties: function getEventProperties(name, sortable) {\n var eventProperties = {};\n plugins.forEach(function (plugin) {\n if (typeof plugin.eventProperties !== 'function') return;\n\n _extends(eventProperties, plugin.eventProperties.call(sortable[plugin.pluginName], name));\n });\n return eventProperties;\n },\n modifyOption: function modifyOption(sortable, name, value) {\n var modifiedValue;\n plugins.forEach(function (plugin) {\n // Plugin must exist on the Sortable\n if (!sortable[plugin.pluginName]) return; // If static option listener exists for this option, call in the context of the Sortable's instance of this plugin\n\n if (plugin.optionListeners && typeof plugin.optionListeners[name] === 'function') {\n modifiedValue = plugin.optionListeners[name].call(sortable[plugin.pluginName], value);\n }\n });\n return modifiedValue;\n }\n};\n\nfunction dispatchEvent(_ref) {\n var sortable = _ref.sortable,\n rootEl = _ref.rootEl,\n name = _ref.name,\n targetEl = _ref.targetEl,\n cloneEl = _ref.cloneEl,\n toEl = _ref.toEl,\n fromEl = _ref.fromEl,\n oldIndex = _ref.oldIndex,\n newIndex = _ref.newIndex,\n oldDraggableIndex = _ref.oldDraggableIndex,\n newDraggableIndex = _ref.newDraggableIndex,\n originalEvent = _ref.originalEvent,\n putSortable = _ref.putSortable,\n extraEventProperties = _ref.extraEventProperties;\n sortable = sortable || rootEl && rootEl[expando];\n if (!sortable) return;\n var evt,\n options = sortable.options,\n onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1); // Support for new CustomEvent feature\n\n if (window.CustomEvent && !IE11OrLess && !Edge) {\n evt = new CustomEvent(name, {\n bubbles: true,\n cancelable: true\n });\n } else {\n evt = document.createEvent('Event');\n evt.initEvent(name, true, true);\n }\n\n evt.to = toEl || rootEl;\n evt.from = fromEl || rootEl;\n evt.item = targetEl || rootEl;\n evt.clone = cloneEl;\n evt.oldIndex = oldIndex;\n evt.newIndex = newIndex;\n evt.oldDraggableIndex = oldDraggableIndex;\n evt.newDraggableIndex = newDraggableIndex;\n evt.originalEvent = originalEvent;\n evt.pullMode = putSortable ? putSortable.lastPutMode : undefined;\n\n var allEventProperties = _objectSpread({}, extraEventProperties, PluginManager.getEventProperties(name, sortable));\n\n for (var option in allEventProperties) {\n evt[option] = allEventProperties[option];\n }\n\n if (rootEl) {\n rootEl.dispatchEvent(evt);\n }\n\n if (options[onName]) {\n options[onName].call(sortable, evt);\n }\n}\n\nvar pluginEvent = function pluginEvent(eventName, sortable) {\n var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {},\n originalEvent = _ref.evt,\n data = _objectWithoutProperties(_ref, [\"evt\"]);\n\n PluginManager.pluginEvent.bind(Sortable)(eventName, sortable, _objectSpread({\n dragEl: dragEl,\n parentEl: parentEl,\n ghostEl: ghostEl,\n rootEl: rootEl,\n nextEl: nextEl,\n lastDownEl: lastDownEl,\n cloneEl: cloneEl,\n cloneHidden: cloneHidden,\n dragStarted: moved,\n putSortable: putSortable,\n activeSortable: Sortable.active,\n originalEvent: originalEvent,\n oldIndex: oldIndex,\n oldDraggableIndex: oldDraggableIndex,\n newIndex: newIndex,\n newDraggableIndex: newDraggableIndex,\n hideGhostForTarget: _hideGhostForTarget,\n unhideGhostForTarget: _unhideGhostForTarget,\n cloneNowHidden: function cloneNowHidden() {\n cloneHidden = true;\n },\n cloneNowShown: function cloneNowShown() {\n cloneHidden = false;\n },\n dispatchSortableEvent: function dispatchSortableEvent(name) {\n _dispatchEvent({\n sortable: sortable,\n name: name,\n originalEvent: originalEvent\n });\n }\n }, data));\n};\n\nfunction _dispatchEvent(info) {\n dispatchEvent(_objectSpread({\n putSortable: putSortable,\n cloneEl: cloneEl,\n targetEl: dragEl,\n rootEl: rootEl,\n oldIndex: oldIndex,\n oldDraggableIndex: oldDraggableIndex,\n newIndex: newIndex,\n newDraggableIndex: newDraggableIndex\n }, info));\n}\n\nvar dragEl,\n parentEl,\n ghostEl,\n rootEl,\n nextEl,\n lastDownEl,\n cloneEl,\n cloneHidden,\n oldIndex,\n newIndex,\n oldDraggableIndex,\n newDraggableIndex,\n activeGroup,\n putSortable,\n awaitingDragStarted = false,\n ignoreNextClick = false,\n sortables = [],\n tapEvt,\n touchEvt,\n lastDx,\n lastDy,\n tapDistanceLeft,\n tapDistanceTop,\n moved,\n lastTarget,\n lastDirection,\n pastFirstInvertThresh = false,\n isCircumstantialInvert = false,\n targetMoveDistance,\n // For positioning ghost absolutely\nghostRelativeParent,\n ghostRelativeParentInitialScroll = [],\n // (left, top)\n_silent = false,\n savedInputChecked = [];\n/** @const */\n\nvar documentExists = typeof document !== 'undefined',\n PositionGhostAbsolutely = IOS,\n CSSFloatProperty = Edge || IE11OrLess ? 'cssFloat' : 'float',\n // This will not pass for IE9, because IE9 DnD only works on anchors\nsupportDraggable = documentExists && !ChromeForAndroid && !IOS && 'draggable' in document.createElement('div'),\n supportCssPointerEvents = function () {\n if (!documentExists) return; // false when <= IE11\n\n if (IE11OrLess) {\n return false;\n }\n\n var el = document.createElement('x');\n el.style.cssText = 'pointer-events:auto';\n return el.style.pointerEvents === 'auto';\n}(),\n _detectDirection = function _detectDirection(el, options) {\n var elCSS = css(el),\n elWidth = parseInt(elCSS.width) - parseInt(elCSS.paddingLeft) - parseInt(elCSS.paddingRight) - parseInt(elCSS.borderLeftWidth) - parseInt(elCSS.borderRightWidth),\n child1 = getChild(el, 0, options),\n child2 = getChild(el, 1, options),\n firstChildCSS = child1 && css(child1),\n secondChildCSS = child2 && css(child2),\n firstChildWidth = firstChildCSS && parseInt(firstChildCSS.marginLeft) + parseInt(firstChildCSS.marginRight) + getRect(child1).width,\n secondChildWidth = secondChildCSS && parseInt(secondChildCSS.marginLeft) + parseInt(secondChildCSS.marginRight) + getRect(child2).width;\n\n if (elCSS.display === 'flex') {\n return elCSS.flexDirection === 'column' || elCSS.flexDirection === 'column-reverse' ? 'vertical' : 'horizontal';\n }\n\n if (elCSS.display === 'grid') {\n return elCSS.gridTemplateColumns.split(' ').length <= 1 ? 'vertical' : 'horizontal';\n }\n\n if (child1 && firstChildCSS[\"float\"] && firstChildCSS[\"float\"] !== 'none') {\n var touchingSideChild2 = firstChildCSS[\"float\"] === 'left' ? 'left' : 'right';\n return child2 && (secondChildCSS.clear === 'both' || secondChildCSS.clear === touchingSideChild2) ? 'vertical' : 'horizontal';\n }\n\n return child1 && (firstChildCSS.display === 'block' || firstChildCSS.display === 'flex' || firstChildCSS.display === 'table' || firstChildCSS.display === 'grid' || firstChildWidth >= elWidth && elCSS[CSSFloatProperty] === 'none' || child2 && elCSS[CSSFloatProperty] === 'none' && firstChildWidth + secondChildWidth > elWidth) ? 'vertical' : 'horizontal';\n},\n _dragElInRowColumn = function _dragElInRowColumn(dragRect, targetRect, vertical) {\n var dragElS1Opp = vertical ? dragRect.left : dragRect.top,\n dragElS2Opp = vertical ? dragRect.right : dragRect.bottom,\n dragElOppLength = vertical ? dragRect.width : dragRect.height,\n targetS1Opp = vertical ? targetRect.left : targetRect.top,\n targetS2Opp = vertical ? targetRect.right : targetRect.bottom,\n targetOppLength = vertical ? targetRect.width : targetRect.height;\n return dragElS1Opp === targetS1Opp || dragElS2Opp === targetS2Opp || dragElS1Opp + dragElOppLength / 2 === targetS1Opp + targetOppLength / 2;\n},\n\n/**\n * Detects first nearest empty sortable to X and Y position using emptyInsertThreshold.\n * @param {Number} x X position\n * @param {Number} y Y position\n * @return {HTMLElement} Element of the first found nearest Sortable\n */\n_detectNearestEmptySortable = function _detectNearestEmptySortable(x, y) {\n var ret;\n sortables.some(function (sortable) {\n if (lastChild(sortable)) return;\n var rect = getRect(sortable),\n threshold = sortable[expando].options.emptyInsertThreshold,\n insideHorizontally = x >= rect.left - threshold && x <= rect.right + threshold,\n insideVertically = y >= rect.top - threshold && y <= rect.bottom + threshold;\n\n if (threshold && insideHorizontally && insideVertically) {\n return ret = sortable;\n }\n });\n return ret;\n},\n _prepareGroup = function _prepareGroup(options) {\n function toFn(value, pull) {\n return function (to, from, dragEl, evt) {\n var sameGroup = to.options.group.name && from.options.group.name && to.options.group.name === from.options.group.name;\n\n if (value == null && (pull || sameGroup)) {\n // Default pull value\n // Default pull and put value if same group\n return true;\n } else if (value == null || value === false) {\n return false;\n } else if (pull && value === 'clone') {\n return value;\n } else if (typeof value === 'function') {\n return toFn(value(to, from, dragEl, evt), pull)(to, from, dragEl, evt);\n } else {\n var otherGroup = (pull ? to : from).options.group.name;\n return value === true || typeof value === 'string' && value === otherGroup || value.join && value.indexOf(otherGroup) > -1;\n }\n };\n }\n\n var group = {};\n var originalGroup = options.group;\n\n if (!originalGroup || _typeof(originalGroup) != 'object') {\n originalGroup = {\n name: originalGroup\n };\n }\n\n group.name = originalGroup.name;\n group.checkPull = toFn(originalGroup.pull, true);\n group.checkPut = toFn(originalGroup.put);\n group.revertClone = originalGroup.revertClone;\n options.group = group;\n},\n _hideGhostForTarget = function _hideGhostForTarget() {\n if (!supportCssPointerEvents && ghostEl) {\n css(ghostEl, 'display', 'none');\n }\n},\n _unhideGhostForTarget = function _unhideGhostForTarget() {\n if (!supportCssPointerEvents && ghostEl) {\n css(ghostEl, 'display', '');\n }\n}; // #1184 fix - Prevent click event on fallback if dragged but item not changed position\n\n\nif (documentExists) {\n document.addEventListener('click', function (evt) {\n if (ignoreNextClick) {\n evt.preventDefault();\n evt.stopPropagation && evt.stopPropagation();\n evt.stopImmediatePropagation && evt.stopImmediatePropagation();\n ignoreNextClick = false;\n return false;\n }\n }, true);\n}\n\nvar nearestEmptyInsertDetectEvent = function nearestEmptyInsertDetectEvent(evt) {\n if (dragEl) {\n evt = evt.touches ? evt.touches[0] : evt;\n\n var nearest = _detectNearestEmptySortable(evt.clientX, evt.clientY);\n\n if (nearest) {\n // Create imitation event\n var event = {};\n\n for (var i in evt) {\n if (evt.hasOwnProperty(i)) {\n event[i] = evt[i];\n }\n }\n\n event.target = event.rootEl = nearest;\n event.preventDefault = void 0;\n event.stopPropagation = void 0;\n\n nearest[expando]._onDragOver(event);\n }\n }\n};\n\nvar _checkOutsideTargetEl = function _checkOutsideTargetEl(evt) {\n if (dragEl) {\n dragEl.parentNode[expando]._isOutsideThisEl(evt.target);\n }\n};\n/**\n * @class Sortable\n * @param {HTMLElement} el\n * @param {Object} [options]\n */\n\n\nfunction Sortable(el, options) {\n if (!(el && el.nodeType && el.nodeType === 1)) {\n throw \"Sortable: `el` must be an HTMLElement, not \".concat({}.toString.call(el));\n }\n\n this.el = el; // root element\n\n this.options = options = _extends({}, options); // Export instance\n\n el[expando] = this;\n var defaults = {\n group: null,\n sort: true,\n disabled: false,\n store: null,\n handle: null,\n draggable: /^[uo]l$/i.test(el.nodeName) ? '>li' : '>*',\n swapThreshold: 1,\n // percentage; 0 <= x <= 1\n invertSwap: false,\n // invert always\n invertedSwapThreshold: null,\n // will be set to same as swapThreshold if default\n removeCloneOnHide: true,\n direction: function direction() {\n return _detectDirection(el, this.options);\n },\n ghostClass: 'sortable-ghost',\n chosenClass: 'sortable-chosen',\n dragClass: 'sortable-drag',\n ignore: 'a, img',\n filter: null,\n preventOnFilter: true,\n animation: 0,\n easing: null,\n setData: function setData(dataTransfer, dragEl) {\n dataTransfer.setData('Text', dragEl.textContent);\n },\n dropBubble: false,\n dragoverBubble: false,\n dataIdAttr: 'data-id',\n delay: 0,\n delayOnTouchOnly: false,\n touchStartThreshold: (Number.parseInt ? Number : window).parseInt(window.devicePixelRatio, 10) || 1,\n forceFallback: false,\n fallbackClass: 'sortable-fallback',\n fallbackOnBody: false,\n fallbackTolerance: 0,\n fallbackOffset: {\n x: 0,\n y: 0\n },\n supportPointer: Sortable.supportPointer !== false && 'PointerEvent' in window,\n emptyInsertThreshold: 5\n };\n PluginManager.initializePlugins(this, el, defaults); // Set default options\n\n for (var name in defaults) {\n !(name in options) && (options[name] = defaults[name]);\n }\n\n _prepareGroup(options); // Bind all private methods\n\n\n for (var fn in this) {\n if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {\n this[fn] = this[fn].bind(this);\n }\n } // Setup drag mode\n\n\n this.nativeDraggable = options.forceFallback ? false : supportDraggable;\n\n if (this.nativeDraggable) {\n // Touch start threshold cannot be greater than the native dragstart threshold\n this.options.touchStartThreshold = 1;\n } // Bind events\n\n\n if (options.supportPointer) {\n on(el, 'pointerdown', this._onTapStart);\n } else {\n on(el, 'mousedown', this._onTapStart);\n on(el, 'touchstart', this._onTapStart);\n }\n\n if (this.nativeDraggable) {\n on(el, 'dragover', this);\n on(el, 'dragenter', this);\n }\n\n sortables.push(this.el); // Restore sorting\n\n options.store && options.store.get && this.sort(options.store.get(this) || []); // Add animation state manager\n\n _extends(this, AnimationStateManager());\n}\n\nSortable.prototype =\n/** @lends Sortable.prototype */\n{\n constructor: Sortable,\n _isOutsideThisEl: function _isOutsideThisEl(target) {\n if (!this.el.contains(target) && target !== this.el) {\n lastTarget = null;\n }\n },\n _getDirection: function _getDirection(evt, target) {\n return typeof this.options.direction === 'function' ? this.options.direction.call(this, evt, target, dragEl) : this.options.direction;\n },\n _onTapStart: function _onTapStart(\n /** Event|TouchEvent */\n evt) {\n if (!evt.cancelable) return;\n\n var _this = this,\n el = this.el,\n options = this.options,\n preventOnFilter = options.preventOnFilter,\n type = evt.type,\n touch = evt.touches && evt.touches[0] || evt.pointerType && evt.pointerType === 'touch' && evt,\n target = (touch || evt).target,\n originalTarget = evt.target.shadowRoot && (evt.path && evt.path[0] || evt.composedPath && evt.composedPath()[0]) || target,\n filter = options.filter;\n\n _saveInputCheckedState(el); // Don't trigger start event when an element is been dragged, otherwise the evt.oldindex always wrong when set option.group.\n\n\n if (dragEl) {\n return;\n }\n\n if (/mousedown|pointerdown/.test(type) && evt.button !== 0 || options.disabled) {\n return; // only left button and enabled\n } // cancel dnd if original target is content editable\n\n\n if (originalTarget.isContentEditable) {\n return;\n }\n\n target = closest(target, options.draggable, el, false);\n\n if (target && target.animated) {\n return;\n }\n\n if (lastDownEl === target) {\n // Ignoring duplicate `down`\n return;\n } // Get the index of the dragged element within its parent\n\n\n oldIndex = index(target);\n oldDraggableIndex = index(target, options.draggable); // Check filter\n\n if (typeof filter === 'function') {\n if (filter.call(this, evt, target, this)) {\n _dispatchEvent({\n sortable: _this,\n rootEl: originalTarget,\n name: 'filter',\n targetEl: target,\n toEl: el,\n fromEl: el\n });\n\n pluginEvent('filter', _this, {\n evt: evt\n });\n preventOnFilter && evt.cancelable && evt.preventDefault();\n return; // cancel dnd\n }\n } else if (filter) {\n filter = filter.split(',').some(function (criteria) {\n criteria = closest(originalTarget, criteria.trim(), el, false);\n\n if (criteria) {\n _dispatchEvent({\n sortable: _this,\n rootEl: criteria,\n name: 'filter',\n targetEl: target,\n fromEl: el,\n toEl: el\n });\n\n pluginEvent('filter', _this, {\n evt: evt\n });\n return true;\n }\n });\n\n if (filter) {\n preventOnFilter && evt.cancelable && evt.preventDefault();\n return; // cancel dnd\n }\n }\n\n if (options.handle && !closest(originalTarget, options.handle, el, false)) {\n return;\n } // Prepare `dragstart`\n\n\n this._prepareDragStart(evt, touch, target);\n },\n _prepareDragStart: function _prepareDragStart(\n /** Event */\n evt,\n /** Touch */\n touch,\n /** HTMLElement */\n target) {\n var _this = this,\n el = _this.el,\n options = _this.options,\n ownerDocument = el.ownerDocument,\n dragStartFn;\n\n if (target && !dragEl && target.parentNode === el) {\n var dragRect = getRect(target);\n rootEl = el;\n dragEl = target;\n parentEl = dragEl.parentNode;\n nextEl = dragEl.nextSibling;\n lastDownEl = target;\n activeGroup = options.group;\n Sortable.dragged = dragEl;\n tapEvt = {\n target: dragEl,\n clientX: (touch || evt).clientX,\n clientY: (touch || evt).clientY\n };\n tapDistanceLeft = tapEvt.clientX - dragRect.left;\n tapDistanceTop = tapEvt.clientY - dragRect.top;\n this._lastX = (touch || evt).clientX;\n this._lastY = (touch || evt).clientY;\n dragEl.style['will-change'] = 'all';\n\n dragStartFn = function dragStartFn() {\n pluginEvent('delayEnded', _this, {\n evt: evt\n });\n\n if (Sortable.eventCanceled) {\n _this._onDrop();\n\n return;\n } // Delayed drag has been triggered\n // we can re-enable the events: touchmove/mousemove\n\n\n _this._disableDelayedDragEvents();\n\n if (!FireFox && _this.nativeDraggable) {\n dragEl.draggable = true;\n } // Bind the events: dragstart/dragend\n\n\n _this._triggerDragStart(evt, touch); // Drag start event\n\n\n _dispatchEvent({\n sortable: _this,\n name: 'choose',\n originalEvent: evt\n }); // Chosen item\n\n\n toggleClass(dragEl, options.chosenClass, true);\n }; // Disable \"draggable\"\n\n\n options.ignore.split(',').forEach(function (criteria) {\n find(dragEl, criteria.trim(), _disableDraggable);\n });\n on(ownerDocument, 'dragover', nearestEmptyInsertDetectEvent);\n on(ownerDocument, 'mousemove', nearestEmptyInsertDetectEvent);\n on(ownerDocument, 'touchmove', nearestEmptyInsertDetectEvent);\n on(ownerDocument, 'mouseup', _this._onDrop);\n on(ownerDocument, 'touchend', _this._onDrop);\n on(ownerDocument, 'touchcancel', _this._onDrop); // Make dragEl draggable (must be before delay for FireFox)\n\n if (FireFox && this.nativeDraggable) {\n this.options.touchStartThreshold = 4;\n dragEl.draggable = true;\n }\n\n pluginEvent('delayStart', this, {\n evt: evt\n }); // Delay is impossible for native DnD in Edge or IE\n\n if (options.delay && (!options.delayOnTouchOnly || touch) && (!this.nativeDraggable || !(Edge || IE11OrLess))) {\n if (Sortable.eventCanceled) {\n this._onDrop();\n\n return;\n } // If the user moves the pointer or let go the click or touch\n // before the delay has been reached:\n // disable the delayed drag\n\n\n on(ownerDocument, 'mouseup', _this._disableDelayedDrag);\n on(ownerDocument, 'touchend', _this._disableDelayedDrag);\n on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);\n on(ownerDocument, 'mousemove', _this._delayedDragTouchMoveHandler);\n on(ownerDocument, 'touchmove', _this._delayedDragTouchMoveHandler);\n options.supportPointer && on(ownerDocument, 'pointermove', _this._delayedDragTouchMoveHandler);\n _this._dragStartTimer = setTimeout(dragStartFn, options.delay);\n } else {\n dragStartFn();\n }\n }\n },\n _delayedDragTouchMoveHandler: function _delayedDragTouchMoveHandler(\n /** TouchEvent|PointerEvent **/\n e) {\n var touch = e.touches ? e.touches[0] : e;\n\n if (Math.max(Math.abs(touch.clientX - this._lastX), Math.abs(touch.clientY - this._lastY)) >= Math.floor(this.options.touchStartThreshold / (this.nativeDraggable && window.devicePixelRatio || 1))) {\n this._disableDelayedDrag();\n }\n },\n _disableDelayedDrag: function _disableDelayedDrag() {\n dragEl && _disableDraggable(dragEl);\n clearTimeout(this._dragStartTimer);\n\n this._disableDelayedDragEvents();\n },\n _disableDelayedDragEvents: function _disableDelayedDragEvents() {\n var ownerDocument = this.el.ownerDocument;\n off(ownerDocument, 'mouseup', this._disableDelayedDrag);\n off(ownerDocument, 'touchend', this._disableDelayedDrag);\n off(ownerDocument, 'touchcancel', this._disableDelayedDrag);\n off(ownerDocument, 'mousemove', this._delayedDragTouchMoveHandler);\n off(ownerDocument, 'touchmove', this._delayedDragTouchMoveHandler);\n off(ownerDocument, 'pointermove', this._delayedDragTouchMoveHandler);\n },\n _triggerDragStart: function _triggerDragStart(\n /** Event */\n evt,\n /** Touch */\n touch) {\n touch = touch || evt.pointerType == 'touch' && evt;\n\n if (!this.nativeDraggable || touch) {\n if (this.options.supportPointer) {\n on(document, 'pointermove', this._onTouchMove);\n } else if (touch) {\n on(document, 'touchmove', this._onTouchMove);\n } else {\n on(document, 'mousemove', this._onTouchMove);\n }\n } else {\n on(dragEl, 'dragend', this);\n on(rootEl, 'dragstart', this._onDragStart);\n }\n\n try {\n if (document.selection) {\n // Timeout neccessary for IE9\n _nextTick(function () {\n document.selection.empty();\n });\n } else {\n window.getSelection().removeAllRanges();\n }\n } catch (err) {}\n },\n _dragStarted: function _dragStarted(fallback, evt) {\n\n awaitingDragStarted = false;\n\n if (rootEl && dragEl) {\n pluginEvent('dragStarted', this, {\n evt: evt\n });\n\n if (this.nativeDraggable) {\n on(document, 'dragover', _checkOutsideTargetEl);\n }\n\n var options = this.options; // Apply effect\n\n !fallback && toggleClass(dragEl, options.dragClass, false);\n toggleClass(dragEl, options.ghostClass, true);\n Sortable.active = this;\n fallback && this._appendGhost(); // Drag start event\n\n _dispatchEvent({\n sortable: this,\n name: 'start',\n originalEvent: evt\n });\n } else {\n this._nulling();\n }\n },\n _emulateDragOver: function _emulateDragOver() {\n if (touchEvt) {\n this._lastX = touchEvt.clientX;\n this._lastY = touchEvt.clientY;\n\n _hideGhostForTarget();\n\n var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY);\n var parent = target;\n\n while (target && target.shadowRoot) {\n target = target.shadowRoot.elementFromPoint(touchEvt.clientX, touchEvt.clientY);\n if (target === parent) break;\n parent = target;\n }\n\n dragEl.parentNode[expando]._isOutsideThisEl(target);\n\n if (parent) {\n do {\n if (parent[expando]) {\n var inserted = void 0;\n inserted = parent[expando]._onDragOver({\n clientX: touchEvt.clientX,\n clientY: touchEvt.clientY,\n target: target,\n rootEl: parent\n });\n\n if (inserted && !this.options.dragoverBubble) {\n break;\n }\n }\n\n target = parent; // store last element\n }\n /* jshint boss:true */\n while (parent = parent.parentNode);\n }\n\n _unhideGhostForTarget();\n }\n },\n _onTouchMove: function _onTouchMove(\n /**TouchEvent*/\n evt) {\n if (tapEvt) {\n var options = this.options,\n fallbackTolerance = options.fallbackTolerance,\n fallbackOffset = options.fallbackOffset,\n touch = evt.touches ? evt.touches[0] : evt,\n ghostMatrix = ghostEl && matrix(ghostEl, true),\n scaleX = ghostEl && ghostMatrix && ghostMatrix.a,\n scaleY = ghostEl && ghostMatrix && ghostMatrix.d,\n relativeScrollOffset = PositionGhostAbsolutely && ghostRelativeParent && getRelativeScrollOffset(ghostRelativeParent),\n dx = (touch.clientX - tapEvt.clientX + fallbackOffset.x) / (scaleX || 1) + (relativeScrollOffset ? relativeScrollOffset[0] - ghostRelativeParentInitialScroll[0] : 0) / (scaleX || 1),\n dy = (touch.clientY - tapEvt.clientY + fallbackOffset.y) / (scaleY || 1) + (relativeScrollOffset ? relativeScrollOffset[1] - ghostRelativeParentInitialScroll[1] : 0) / (scaleY || 1); // only set the status to dragging, when we are actually dragging\n\n if (!Sortable.active && !awaitingDragStarted) {\n if (fallbackTolerance && Math.max(Math.abs(touch.clientX - this._lastX), Math.abs(touch.clientY - this._lastY)) < fallbackTolerance) {\n return;\n }\n\n this._onDragStart(evt, true);\n }\n\n if (ghostEl) {\n if (ghostMatrix) {\n ghostMatrix.e += dx - (lastDx || 0);\n ghostMatrix.f += dy - (lastDy || 0);\n } else {\n ghostMatrix = {\n a: 1,\n b: 0,\n c: 0,\n d: 1,\n e: dx,\n f: dy\n };\n }\n\n var cssMatrix = \"matrix(\".concat(ghostMatrix.a, \",\").concat(ghostMatrix.b, \",\").concat(ghostMatrix.c, \",\").concat(ghostMatrix.d, \",\").concat(ghostMatrix.e, \",\").concat(ghostMatrix.f, \")\");\n css(ghostEl, 'webkitTransform', cssMatrix);\n css(ghostEl, 'mozTransform', cssMatrix);\n css(ghostEl, 'msTransform', cssMatrix);\n css(ghostEl, 'transform', cssMatrix);\n lastDx = dx;\n lastDy = dy;\n touchEvt = touch;\n }\n\n evt.cancelable && evt.preventDefault();\n }\n },\n _appendGhost: function _appendGhost() {\n // Bug if using scale(): https://stackoverflow.com/questions/2637058\n // Not being adjusted for\n if (!ghostEl) {\n var container = this.options.fallbackOnBody ? document.body : rootEl,\n rect = getRect(dragEl, true, PositionGhostAbsolutely, true, container),\n options = this.options; // Position absolutely\n\n if (PositionGhostAbsolutely) {\n // Get relatively positioned parent\n ghostRelativeParent = container;\n\n while (css(ghostRelativeParent, 'position') === 'static' && css(ghostRelativeParent, 'transform') === 'none' && ghostRelativeParent !== document) {\n ghostRelativeParent = ghostRelativeParent.parentNode;\n }\n\n if (ghostRelativeParent !== document.body && ghostRelativeParent !== document.documentElement) {\n if (ghostRelativeParent === document) ghostRelativeParent = getWindowScrollingElement();\n rect.top += ghostRelativeParent.scrollTop;\n rect.left += ghostRelativeParent.scrollLeft;\n } else {\n ghostRelativeParent = getWindowScrollingElement();\n }\n\n ghostRelativeParentInitialScroll = getRelativeScrollOffset(ghostRelativeParent);\n }\n\n ghostEl = dragEl.cloneNode(true);\n toggleClass(ghostEl, options.ghostClass, false);\n toggleClass(ghostEl, options.fallbackClass, true);\n toggleClass(ghostEl, options.dragClass, true);\n css(ghostEl, 'transition', '');\n css(ghostEl, 'transform', '');\n css(ghostEl, 'box-sizing', 'border-box');\n css(ghostEl, 'margin', 0);\n css(ghostEl, 'top', rect.top);\n css(ghostEl, 'left', rect.left);\n css(ghostEl, 'width', rect.width);\n css(ghostEl, 'height', rect.height);\n css(ghostEl, 'opacity', '0.8');\n css(ghostEl, 'position', PositionGhostAbsolutely ? 'absolute' : 'fixed');\n css(ghostEl, 'zIndex', '100000');\n css(ghostEl, 'pointerEvents', 'none');\n Sortable.ghost = ghostEl;\n container.appendChild(ghostEl); // Set transform-origin\n\n css(ghostEl, 'transform-origin', tapDistanceLeft / parseInt(ghostEl.style.width) * 100 + '% ' + tapDistanceTop / parseInt(ghostEl.style.height) * 100 + '%');\n }\n },\n _onDragStart: function _onDragStart(\n /**Event*/\n evt,\n /**boolean*/\n fallback) {\n var _this = this;\n\n var dataTransfer = evt.dataTransfer;\n var options = _this.options;\n pluginEvent('dragStart', this, {\n evt: evt\n });\n\n if (Sortable.eventCanceled) {\n this._onDrop();\n\n return;\n }\n\n pluginEvent('setupClone', this);\n\n if (!Sortable.eventCanceled) {\n cloneEl = clone(dragEl);\n cloneEl.draggable = false;\n cloneEl.style['will-change'] = '';\n\n this._hideClone();\n\n toggleClass(cloneEl, this.options.chosenClass, false);\n Sortable.clone = cloneEl;\n } // #1143: IFrame support workaround\n\n\n _this.cloneId = _nextTick(function () {\n pluginEvent('clone', _this);\n if (Sortable.eventCanceled) return;\n\n if (!_this.options.removeCloneOnHide) {\n rootEl.insertBefore(cloneEl, dragEl);\n }\n\n _this._hideClone();\n\n _dispatchEvent({\n sortable: _this,\n name: 'clone'\n });\n });\n !fallback && toggleClass(dragEl, options.dragClass, true); // Set proper drop events\n\n if (fallback) {\n ignoreNextClick = true;\n _this._loopId = setInterval(_this._emulateDragOver, 50);\n } else {\n // Undo what was set in _prepareDragStart before drag started\n off(document, 'mouseup', _this._onDrop);\n off(document, 'touchend', _this._onDrop);\n off(document, 'touchcancel', _this._onDrop);\n\n if (dataTransfer) {\n dataTransfer.effectAllowed = 'move';\n options.setData && options.setData.call(_this, dataTransfer, dragEl);\n }\n\n on(document, 'drop', _this); // #1276 fix:\n\n css(dragEl, 'transform', 'translateZ(0)');\n }\n\n awaitingDragStarted = true;\n _this._dragStartId = _nextTick(_this._dragStarted.bind(_this, fallback, evt));\n on(document, 'selectstart', _this);\n moved = true;\n\n if (Safari) {\n css(document.body, 'user-select', 'none');\n }\n },\n // Returns true - if no further action is needed (either inserted or another condition)\n _onDragOver: function _onDragOver(\n /**Event*/\n evt) {\n var el = this.el,\n target = evt.target,\n dragRect,\n targetRect,\n revert,\n options = this.options,\n group = options.group,\n activeSortable = Sortable.active,\n isOwner = activeGroup === group,\n canSort = options.sort,\n fromSortable = putSortable || activeSortable,\n vertical,\n _this = this,\n completedFired = false;\n\n if (_silent) return;\n\n function dragOverEvent(name, extra) {\n pluginEvent(name, _this, _objectSpread({\n evt: evt,\n isOwner: isOwner,\n axis: vertical ? 'vertical' : 'horizontal',\n revert: revert,\n dragRect: dragRect,\n targetRect: targetRect,\n canSort: canSort,\n fromSortable: fromSortable,\n target: target,\n completed: completed,\n onMove: function onMove(target, after) {\n return _onMove(rootEl, el, dragEl, dragRect, target, getRect(target), evt, after);\n },\n changed: changed\n }, extra));\n } // Capture animation state\n\n\n function capture() {\n dragOverEvent('dragOverAnimationCapture');\n\n _this.captureAnimationState();\n\n if (_this !== fromSortable) {\n fromSortable.captureAnimationState();\n }\n } // Return invocation when dragEl is inserted (or completed)\n\n\n function completed(insertion) {\n dragOverEvent('dragOverCompleted', {\n insertion: insertion\n });\n\n if (insertion) {\n // Clones must be hidden before folding animation to capture dragRectAbsolute properly\n if (isOwner) {\n activeSortable._hideClone();\n } else {\n activeSortable._showClone(_this);\n }\n\n if (_this !== fromSortable) {\n // Set ghost class to new sortable's ghost class\n toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : activeSortable.options.ghostClass, false);\n toggleClass(dragEl, options.ghostClass, true);\n }\n\n if (putSortable !== _this && _this !== Sortable.active) {\n putSortable = _this;\n } else if (_this === Sortable.active && putSortable) {\n putSortable = null;\n } // Animation\n\n\n if (fromSortable === _this) {\n _this._ignoreWhileAnimating = target;\n }\n\n _this.animateAll(function () {\n dragOverEvent('dragOverAnimationComplete');\n _this._ignoreWhileAnimating = null;\n });\n\n if (_this !== fromSortable) {\n fromSortable.animateAll();\n fromSortable._ignoreWhileAnimating = null;\n }\n } // Null lastTarget if it is not inside a previously swapped element\n\n\n if (target === dragEl && !dragEl.animated || target === el && !target.animated) {\n lastTarget = null;\n } // no bubbling and not fallback\n\n\n if (!options.dragoverBubble && !evt.rootEl && target !== document) {\n dragEl.parentNode[expando]._isOutsideThisEl(evt.target); // Do not detect for empty insert if already inserted\n\n\n !insertion && nearestEmptyInsertDetectEvent(evt);\n }\n\n !options.dragoverBubble && evt.stopPropagation && evt.stopPropagation();\n return completedFired = true;\n } // Call when dragEl has been inserted\n\n\n function changed() {\n newIndex = index(dragEl);\n newDraggableIndex = index(dragEl, options.draggable);\n\n _dispatchEvent({\n sortable: _this,\n name: 'change',\n toEl: el,\n newIndex: newIndex,\n newDraggableIndex: newDraggableIndex,\n originalEvent: evt\n });\n }\n\n if (evt.preventDefault !== void 0) {\n evt.cancelable && evt.preventDefault();\n }\n\n target = closest(target, options.draggable, el, true);\n dragOverEvent('dragOver');\n if (Sortable.eventCanceled) return completedFired;\n\n if (dragEl.contains(evt.target) || target.animated && target.animatingX && target.animatingY || _this._ignoreWhileAnimating === target) {\n return completed(false);\n }\n\n ignoreNextClick = false;\n\n if (activeSortable && !options.disabled && (isOwner ? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list\n : putSortable === this || (this.lastPutMode = activeGroup.checkPull(this, activeSortable, dragEl, evt)) && group.checkPut(this, activeSortable, dragEl, evt))) {\n vertical = this._getDirection(evt, target) === 'vertical';\n dragRect = getRect(dragEl);\n dragOverEvent('dragOverValid');\n if (Sortable.eventCanceled) return completedFired;\n\n if (revert) {\n parentEl = rootEl; // actualization\n\n capture();\n\n this._hideClone();\n\n dragOverEvent('revert');\n\n if (!Sortable.eventCanceled) {\n if (nextEl) {\n rootEl.insertBefore(dragEl, nextEl);\n } else {\n rootEl.appendChild(dragEl);\n }\n }\n\n return completed(true);\n }\n\n var elLastChild = lastChild(el, options.draggable);\n\n if (!elLastChild || _ghostIsLast(evt, vertical, this) && !elLastChild.animated) {\n // If already at end of list: Do not insert\n if (elLastChild === dragEl) {\n return completed(false);\n } // assign target only if condition is true\n\n\n if (elLastChild && el === evt.target) {\n target = elLastChild;\n }\n\n if (target) {\n targetRect = getRect(target);\n }\n\n if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, !!target) !== false) {\n capture();\n el.appendChild(dragEl);\n parentEl = el; // actualization\n\n changed();\n return completed(true);\n }\n } else if (target.parentNode === el) {\n targetRect = getRect(target);\n var direction = 0,\n targetBeforeFirstSwap,\n differentLevel = dragEl.parentNode !== el,\n differentRowCol = !_dragElInRowColumn(dragEl.animated && dragEl.toRect || dragRect, target.animated && target.toRect || targetRect, vertical),\n side1 = vertical ? 'top' : 'left',\n scrolledPastTop = isScrolledPast(target, 'top', 'top') || isScrolledPast(dragEl, 'top', 'top'),\n scrollBefore = scrolledPastTop ? scrolledPastTop.scrollTop : void 0;\n\n if (lastTarget !== target) {\n targetBeforeFirstSwap = targetRect[side1];\n pastFirstInvertThresh = false;\n isCircumstantialInvert = !differentRowCol && options.invertSwap || differentLevel;\n }\n\n direction = _getSwapDirection(evt, target, targetRect, vertical, differentRowCol ? 1 : options.swapThreshold, options.invertedSwapThreshold == null ? options.swapThreshold : options.invertedSwapThreshold, isCircumstantialInvert, lastTarget === target);\n var sibling;\n\n if (direction !== 0) {\n // Check if target is beside dragEl in respective direction (ignoring hidden elements)\n var dragIndex = index(dragEl);\n\n do {\n dragIndex -= direction;\n sibling = parentEl.children[dragIndex];\n } while (sibling && (css(sibling, 'display') === 'none' || sibling === ghostEl));\n } // If dragEl is already beside target: Do not insert\n\n\n if (direction === 0 || sibling === target) {\n return completed(false);\n }\n\n lastTarget = target;\n lastDirection = direction;\n var nextSibling = target.nextElementSibling,\n after = false;\n after = direction === 1;\n\n var moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, after);\n\n if (moveVector !== false) {\n if (moveVector === 1 || moveVector === -1) {\n after = moveVector === 1;\n }\n\n _silent = true;\n setTimeout(_unsilent, 30);\n capture();\n\n if (after && !nextSibling) {\n el.appendChild(dragEl);\n } else {\n target.parentNode.insertBefore(dragEl, after ? nextSibling : target);\n } // Undo chrome's scroll adjustment (has no effect on other browsers)\n\n\n if (scrolledPastTop) {\n scrollBy(scrolledPastTop, 0, scrollBefore - scrolledPastTop.scrollTop);\n }\n\n parentEl = dragEl.parentNode; // actualization\n // must be done before animation\n\n if (targetBeforeFirstSwap !== undefined && !isCircumstantialInvert) {\n targetMoveDistance = Math.abs(targetBeforeFirstSwap - getRect(target)[side1]);\n }\n\n changed();\n return completed(true);\n }\n }\n\n if (el.contains(dragEl)) {\n return completed(false);\n }\n }\n\n return false;\n },\n _ignoreWhileAnimating: null,\n _offMoveEvents: function _offMoveEvents() {\n off(document, 'mousemove', this._onTouchMove);\n off(document, 'touchmove', this._onTouchMove);\n off(document, 'pointermove', this._onTouchMove);\n off(document, 'dragover', nearestEmptyInsertDetectEvent);\n off(document, 'mousemove', nearestEmptyInsertDetectEvent);\n off(document, 'touchmove', nearestEmptyInsertDetectEvent);\n },\n _offUpEvents: function _offUpEvents() {\n var ownerDocument = this.el.ownerDocument;\n off(ownerDocument, 'mouseup', this._onDrop);\n off(ownerDocument, 'touchend', this._onDrop);\n off(ownerDocument, 'pointerup', this._onDrop);\n off(ownerDocument, 'touchcancel', this._onDrop);\n off(document, 'selectstart', this);\n },\n _onDrop: function _onDrop(\n /**Event*/\n evt) {\n var el = this.el,\n options = this.options; // Get the index of the dragged element within its parent\n\n newIndex = index(dragEl);\n newDraggableIndex = index(dragEl, options.draggable);\n pluginEvent('drop', this, {\n evt: evt\n });\n parentEl = dragEl && dragEl.parentNode; // Get again after plugin event\n\n newIndex = index(dragEl);\n newDraggableIndex = index(dragEl, options.draggable);\n\n if (Sortable.eventCanceled) {\n this._nulling();\n\n return;\n }\n\n awaitingDragStarted = false;\n isCircumstantialInvert = false;\n pastFirstInvertThresh = false;\n clearInterval(this._loopId);\n clearTimeout(this._dragStartTimer);\n\n _cancelNextTick(this.cloneId);\n\n _cancelNextTick(this._dragStartId); // Unbind events\n\n\n if (this.nativeDraggable) {\n off(document, 'drop', this);\n off(el, 'dragstart', this._onDragStart);\n }\n\n this._offMoveEvents();\n\n this._offUpEvents();\n\n if (Safari) {\n css(document.body, 'user-select', '');\n }\n\n css(dragEl, 'transform', '');\n\n if (evt) {\n if (moved) {\n evt.cancelable && evt.preventDefault();\n !options.dropBubble && evt.stopPropagation();\n }\n\n ghostEl && ghostEl.parentNode && ghostEl.parentNode.removeChild(ghostEl);\n\n if (rootEl === parentEl || putSortable && putSortable.lastPutMode !== 'clone') {\n // Remove clone(s)\n cloneEl && cloneEl.parentNode && cloneEl.parentNode.removeChild(cloneEl);\n }\n\n if (dragEl) {\n if (this.nativeDraggable) {\n off(dragEl, 'dragend', this);\n }\n\n _disableDraggable(dragEl);\n\n dragEl.style['will-change'] = ''; // Remove classes\n // ghostClass is added in dragStarted\n\n if (moved && !awaitingDragStarted) {\n toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : this.options.ghostClass, false);\n }\n\n toggleClass(dragEl, this.options.chosenClass, false); // Drag stop event\n\n _dispatchEvent({\n sortable: this,\n name: 'unchoose',\n toEl: parentEl,\n newIndex: null,\n newDraggableIndex: null,\n originalEvent: evt\n });\n\n if (rootEl !== parentEl) {\n if (newIndex >= 0) {\n // Add event\n _dispatchEvent({\n rootEl: parentEl,\n name: 'add',\n toEl: parentEl,\n fromEl: rootEl,\n originalEvent: evt\n }); // Remove event\n\n\n _dispatchEvent({\n sortable: this,\n name: 'remove',\n toEl: parentEl,\n originalEvent: evt\n }); // drag from one list and drop into another\n\n\n _dispatchEvent({\n rootEl: parentEl,\n name: 'sort',\n toEl: parentEl,\n fromEl: rootEl,\n originalEvent: evt\n });\n\n _dispatchEvent({\n sortable: this,\n name: 'sort',\n toEl: parentEl,\n originalEvent: evt\n });\n }\n\n putSortable && putSortable.save();\n } else {\n if (newIndex !== oldIndex) {\n if (newIndex >= 0) {\n // drag & drop within the same list\n _dispatchEvent({\n sortable: this,\n name: 'update',\n toEl: parentEl,\n originalEvent: evt\n });\n\n _dispatchEvent({\n sortable: this,\n name: 'sort',\n toEl: parentEl,\n originalEvent: evt\n });\n }\n }\n }\n\n if (Sortable.active) {\n /* jshint eqnull:true */\n if (newIndex == null || newIndex === -1) {\n newIndex = oldIndex;\n newDraggableIndex = oldDraggableIndex;\n }\n\n _dispatchEvent({\n sortable: this,\n name: 'end',\n toEl: parentEl,\n originalEvent: evt\n }); // Save sorting\n\n\n this.save();\n }\n }\n }\n\n this._nulling();\n },\n _nulling: function _nulling() {\n pluginEvent('nulling', this);\n rootEl = dragEl = parentEl = ghostEl = nextEl = cloneEl = lastDownEl = cloneHidden = tapEvt = touchEvt = moved = newIndex = newDraggableIndex = oldIndex = oldDraggableIndex = lastTarget = lastDirection = putSortable = activeGroup = Sortable.dragged = Sortable.ghost = Sortable.clone = Sortable.active = null;\n savedInputChecked.forEach(function (el) {\n el.checked = true;\n });\n savedInputChecked.length = lastDx = lastDy = 0;\n },\n handleEvent: function handleEvent(\n /**Event*/\n evt) {\n switch (evt.type) {\n case 'drop':\n case 'dragend':\n this._onDrop(evt);\n\n break;\n\n case 'dragenter':\n case 'dragover':\n if (dragEl) {\n this._onDragOver(evt);\n\n _globalDragOver(evt);\n }\n\n break;\n\n case 'selectstart':\n evt.preventDefault();\n break;\n }\n },\n\n /**\n * Serializes the item into an array of string.\n * @returns {String[]}\n */\n toArray: function toArray() {\n var order = [],\n el,\n children = this.el.children,\n i = 0,\n n = children.length,\n options = this.options;\n\n for (; i < n; i++) {\n el = children[i];\n\n if (closest(el, options.draggable, this.el, false)) {\n order.push(el.getAttribute(options.dataIdAttr) || _generateId(el));\n }\n }\n\n return order;\n },\n\n /**\n * Sorts the elements according to the array.\n * @param {String[]} order order of the items\n */\n sort: function sort(order) {\n var items = {},\n rootEl = this.el;\n this.toArray().forEach(function (id, i) {\n var el = rootEl.children[i];\n\n if (closest(el, this.options.draggable, rootEl, false)) {\n items[id] = el;\n }\n }, this);\n order.forEach(function (id) {\n if (items[id]) {\n rootEl.removeChild(items[id]);\n rootEl.appendChild(items[id]);\n }\n });\n },\n\n /**\n * Save the current sorting\n */\n save: function save() {\n var store = this.options.store;\n store && store.set && store.set(this);\n },\n\n /**\n * For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.\n * @param {HTMLElement} el\n * @param {String} [selector] default: `options.draggable`\n * @returns {HTMLElement|null}\n */\n closest: function closest$1(el, selector) {\n return closest(el, selector || this.options.draggable, this.el, false);\n },\n\n /**\n * Set/get option\n * @param {string} name\n * @param {*} [value]\n * @returns {*}\n */\n option: function option(name, value) {\n var options = this.options;\n\n if (value === void 0) {\n return options[name];\n } else {\n var modifiedValue = PluginManager.modifyOption(this, name, value);\n\n if (typeof modifiedValue !== 'undefined') {\n options[name] = modifiedValue;\n } else {\n options[name] = value;\n }\n\n if (name === 'group') {\n _prepareGroup(options);\n }\n }\n },\n\n /**\n * Destroy\n */\n destroy: function destroy() {\n pluginEvent('destroy', this);\n var el = this.el;\n el[expando] = null;\n off(el, 'mousedown', this._onTapStart);\n off(el, 'touchstart', this._onTapStart);\n off(el, 'pointerdown', this._onTapStart);\n\n if (this.nativeDraggable) {\n off(el, 'dragover', this);\n off(el, 'dragenter', this);\n } // Remove draggable attributes\n\n\n Array.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {\n el.removeAttribute('draggable');\n });\n\n this._onDrop();\n\n this._disableDelayedDragEvents();\n\n sortables.splice(sortables.indexOf(this.el), 1);\n this.el = el = null;\n },\n _hideClone: function _hideClone() {\n if (!cloneHidden) {\n pluginEvent('hideClone', this);\n if (Sortable.eventCanceled) return;\n css(cloneEl, 'display', 'none');\n\n if (this.options.removeCloneOnHide && cloneEl.parentNode) {\n cloneEl.parentNode.removeChild(cloneEl);\n }\n\n cloneHidden = true;\n }\n },\n _showClone: function _showClone(putSortable) {\n if (putSortable.lastPutMode !== 'clone') {\n this._hideClone();\n\n return;\n }\n\n if (cloneHidden) {\n pluginEvent('showClone', this);\n if (Sortable.eventCanceled) return; // show clone at dragEl or original position\n\n if (rootEl.contains(dragEl) && !this.options.group.revertClone) {\n rootEl.insertBefore(cloneEl, dragEl);\n } else if (nextEl) {\n rootEl.insertBefore(cloneEl, nextEl);\n } else {\n rootEl.appendChild(cloneEl);\n }\n\n if (this.options.group.revertClone) {\n this.animate(dragEl, cloneEl);\n }\n\n css(cloneEl, 'display', '');\n cloneHidden = false;\n }\n }\n};\n\nfunction _globalDragOver(\n/**Event*/\nevt) {\n if (evt.dataTransfer) {\n evt.dataTransfer.dropEffect = 'move';\n }\n\n evt.cancelable && evt.preventDefault();\n}\n\nfunction _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect, originalEvent, willInsertAfter) {\n var evt,\n sortable = fromEl[expando],\n onMoveFn = sortable.options.onMove,\n retVal; // Support for new CustomEvent feature\n\n if (window.CustomEvent && !IE11OrLess && !Edge) {\n evt = new CustomEvent('move', {\n bubbles: true,\n cancelable: true\n });\n } else {\n evt = document.createEvent('Event');\n evt.initEvent('move', true, true);\n }\n\n evt.to = toEl;\n evt.from = fromEl;\n evt.dragged = dragEl;\n evt.draggedRect = dragRect;\n evt.related = targetEl || toEl;\n evt.relatedRect = targetRect || getRect(toEl);\n evt.willInsertAfter = willInsertAfter;\n evt.originalEvent = originalEvent;\n fromEl.dispatchEvent(evt);\n\n if (onMoveFn) {\n retVal = onMoveFn.call(sortable, evt, originalEvent);\n }\n\n return retVal;\n}\n\nfunction _disableDraggable(el) {\n el.draggable = false;\n}\n\nfunction _unsilent() {\n _silent = false;\n}\n\nfunction _ghostIsLast(evt, vertical, sortable) {\n var rect = getRect(lastChild(sortable.el, sortable.options.draggable));\n var spacer = 10;\n return vertical ? evt.clientX > rect.right + spacer || evt.clientX <= rect.right && evt.clientY > rect.bottom && evt.clientX >= rect.left : evt.clientX > rect.right && evt.clientY > rect.top || evt.clientX <= rect.right && evt.clientY > rect.bottom + spacer;\n}\n\nfunction _getSwapDirection(evt, target, targetRect, vertical, swapThreshold, invertedSwapThreshold, invertSwap, isLastTarget) {\n var mouseOnAxis = vertical ? evt.clientY : evt.clientX,\n targetLength = vertical ? targetRect.height : targetRect.width,\n targetS1 = vertical ? targetRect.top : targetRect.left,\n targetS2 = vertical ? targetRect.bottom : targetRect.right,\n invert = false;\n\n if (!invertSwap) {\n // Never invert or create dragEl shadow when target movemenet causes mouse to move past the end of regular swapThreshold\n if (isLastTarget && targetMoveDistance < targetLength * swapThreshold) {\n // multiplied only by swapThreshold because mouse will already be inside target by (1 - threshold) * targetLength / 2\n // check if past first invert threshold on side opposite of lastDirection\n if (!pastFirstInvertThresh && (lastDirection === 1 ? mouseOnAxis > targetS1 + targetLength * invertedSwapThreshold / 2 : mouseOnAxis < targetS2 - targetLength * invertedSwapThreshold / 2)) {\n // past first invert threshold, do not restrict inverted threshold to dragEl shadow\n pastFirstInvertThresh = true;\n }\n\n if (!pastFirstInvertThresh) {\n // dragEl shadow (target move distance shadow)\n if (lastDirection === 1 ? mouseOnAxis < targetS1 + targetMoveDistance // over dragEl shadow\n : mouseOnAxis > targetS2 - targetMoveDistance) {\n return -lastDirection;\n }\n } else {\n invert = true;\n }\n } else {\n // Regular\n if (mouseOnAxis > targetS1 + targetLength * (1 - swapThreshold) / 2 && mouseOnAxis < targetS2 - targetLength * (1 - swapThreshold) / 2) {\n return _getInsertDirection(target);\n }\n }\n }\n\n invert = invert || invertSwap;\n\n if (invert) {\n // Invert of regular\n if (mouseOnAxis < targetS1 + targetLength * invertedSwapThreshold / 2 || mouseOnAxis > targetS2 - targetLength * invertedSwapThreshold / 2) {\n return mouseOnAxis > targetS1 + targetLength / 2 ? 1 : -1;\n }\n }\n\n return 0;\n}\n/**\n * Gets the direction dragEl must be swapped relative to target in order to make it\n * seem that dragEl has been \"inserted\" into that element's position\n * @param {HTMLElement} target The target whose position dragEl is being inserted at\n * @return {Number} Direction dragEl must be swapped\n */\n\n\nfunction _getInsertDirection(target) {\n if (index(dragEl) < index(target)) {\n return 1;\n } else {\n return -1;\n }\n}\n/**\n * Generate id\n * @param {HTMLElement} el\n * @returns {String}\n * @private\n */\n\n\nfunction _generateId(el) {\n var str = el.tagName + el.className + el.src + el.href + el.textContent,\n i = str.length,\n sum = 0;\n\n while (i--) {\n sum += str.charCodeAt(i);\n }\n\n return sum.toString(36);\n}\n\nfunction _saveInputCheckedState(root) {\n savedInputChecked.length = 0;\n var inputs = root.getElementsByTagName('input');\n var idx = inputs.length;\n\n while (idx--) {\n var el = inputs[idx];\n el.checked && savedInputChecked.push(el);\n }\n}\n\nfunction _nextTick(fn) {\n return setTimeout(fn, 0);\n}\n\nfunction _cancelNextTick(id) {\n return clearTimeout(id);\n} // Fixed #973:\n\n\nif (documentExists) {\n on(document, 'touchmove', function (evt) {\n if ((Sortable.active || awaitingDragStarted) && evt.cancelable) {\n evt.preventDefault();\n }\n });\n} // Export utils\n\n\nSortable.utils = {\n on: on,\n off: off,\n css: css,\n find: find,\n is: function is(el, selector) {\n return !!closest(el, selector, el, false);\n },\n extend: extend,\n throttle: throttle,\n closest: closest,\n toggleClass: toggleClass,\n clone: clone,\n index: index,\n nextTick: _nextTick,\n cancelNextTick: _cancelNextTick,\n detectDirection: _detectDirection,\n getChild: getChild\n};\n/**\n * Get the Sortable instance of an element\n * @param {HTMLElement} element The element\n * @return {Sortable|undefined} The instance of Sortable\n */\n\nSortable.get = function (element) {\n return element[expando];\n};\n/**\n * Mount a plugin to Sortable\n * @param {...SortablePlugin|SortablePlugin[]} plugins Plugins being mounted\n */\n\n\nSortable.mount = function () {\n for (var _len = arguments.length, plugins = new Array(_len), _key = 0; _key < _len; _key++) {\n plugins[_key] = arguments[_key];\n }\n\n if (plugins[0].constructor === Array) plugins = plugins[0];\n plugins.forEach(function (plugin) {\n if (!plugin.prototype || !plugin.prototype.constructor) {\n throw \"Sortable: Mounted plugin must be a constructor function, not \".concat({}.toString.call(plugin));\n }\n\n if (plugin.utils) Sortable.utils = _objectSpread({}, Sortable.utils, plugin.utils);\n PluginManager.mount(plugin);\n });\n};\n/**\n * Create sortable instance\n * @param {HTMLElement} el\n * @param {Object} [options]\n */\n\n\nSortable.create = function (el, options) {\n return new Sortable(el, options);\n}; // Export\n\n\nSortable.version = version;\n\nvar autoScrolls = [],\n scrollEl,\n scrollRootEl,\n scrolling = false,\n lastAutoScrollX,\n lastAutoScrollY,\n touchEvt$1,\n pointerElemChangedInterval;\n\nfunction AutoScrollPlugin() {\n function AutoScroll() {\n this.defaults = {\n scroll: true,\n scrollSensitivity: 30,\n scrollSpeed: 10,\n bubbleScroll: true\n }; // Bind all private methods\n\n for (var fn in this) {\n if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {\n this[fn] = this[fn].bind(this);\n }\n }\n }\n\n AutoScroll.prototype = {\n dragStarted: function dragStarted(_ref) {\n var originalEvent = _ref.originalEvent;\n\n if (this.sortable.nativeDraggable) {\n on(document, 'dragover', this._handleAutoScroll);\n } else {\n if (this.options.supportPointer) {\n on(document, 'pointermove', this._handleFallbackAutoScroll);\n } else if (originalEvent.touches) {\n on(document, 'touchmove', this._handleFallbackAutoScroll);\n } else {\n on(document, 'mousemove', this._handleFallbackAutoScroll);\n }\n }\n },\n dragOverCompleted: function dragOverCompleted(_ref2) {\n var originalEvent = _ref2.originalEvent;\n\n // For when bubbling is canceled and using fallback (fallback 'touchmove' always reached)\n if (!this.options.dragOverBubble && !originalEvent.rootEl) {\n this._handleAutoScroll(originalEvent);\n }\n },\n drop: function drop() {\n if (this.sortable.nativeDraggable) {\n off(document, 'dragover', this._handleAutoScroll);\n } else {\n off(document, 'pointermove', this._handleFallbackAutoScroll);\n off(document, 'touchmove', this._handleFallbackAutoScroll);\n off(document, 'mousemove', this._handleFallbackAutoScroll);\n }\n\n clearPointerElemChangedInterval();\n clearAutoScrolls();\n cancelThrottle();\n },\n nulling: function nulling() {\n touchEvt$1 = scrollRootEl = scrollEl = scrolling = pointerElemChangedInterval = lastAutoScrollX = lastAutoScrollY = null;\n autoScrolls.length = 0;\n },\n _handleFallbackAutoScroll: function _handleFallbackAutoScroll(evt) {\n this._handleAutoScroll(evt, true);\n },\n _handleAutoScroll: function _handleAutoScroll(evt, fallback) {\n var _this = this;\n\n var x = (evt.touches ? evt.touches[0] : evt).clientX,\n y = (evt.touches ? evt.touches[0] : evt).clientY,\n elem = document.elementFromPoint(x, y);\n touchEvt$1 = evt; // IE does not seem to have native autoscroll,\n // Edge's autoscroll seems too conditional,\n // MACOS Safari does not have autoscroll,\n // Firefox and Chrome are good\n\n if (fallback || Edge || IE11OrLess || Safari) {\n autoScroll(evt, this.options, elem, fallback); // Listener for pointer element change\n\n var ogElemScroller = getParentAutoScrollElement(elem, true);\n\n if (scrolling && (!pointerElemChangedInterval || x !== lastAutoScrollX || y !== lastAutoScrollY)) {\n pointerElemChangedInterval && clearPointerElemChangedInterval(); // Detect for pointer elem change, emulating native DnD behaviour\n\n pointerElemChangedInterval = setInterval(function () {\n var newElem = getParentAutoScrollElement(document.elementFromPoint(x, y), true);\n\n if (newElem !== ogElemScroller) {\n ogElemScroller = newElem;\n clearAutoScrolls();\n }\n\n autoScroll(evt, _this.options, newElem, fallback);\n }, 10);\n lastAutoScrollX = x;\n lastAutoScrollY = y;\n }\n } else {\n // if DnD is enabled (and browser has good autoscrolling), first autoscroll will already scroll, so get parent autoscroll of first autoscroll\n if (!this.options.bubbleScroll || getParentAutoScrollElement(elem, true) === getWindowScrollingElement()) {\n clearAutoScrolls();\n return;\n }\n\n autoScroll(evt, this.options, getParentAutoScrollElement(elem, false), false);\n }\n }\n };\n return _extends(AutoScroll, {\n pluginName: 'scroll',\n initializeByDefault: true\n });\n}\n\nfunction clearAutoScrolls() {\n autoScrolls.forEach(function (autoScroll) {\n clearInterval(autoScroll.pid);\n });\n autoScrolls = [];\n}\n\nfunction clearPointerElemChangedInterval() {\n clearInterval(pointerElemChangedInterval);\n}\n\nvar autoScroll = throttle(function (evt, options, rootEl, isFallback) {\n // Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521\n if (!options.scroll) return;\n var x = (evt.touches ? evt.touches[0] : evt).clientX,\n y = (evt.touches ? evt.touches[0] : evt).clientY,\n sens = options.scrollSensitivity,\n speed = options.scrollSpeed,\n winScroller = getWindowScrollingElement();\n var scrollThisInstance = false,\n scrollCustomFn; // New scroll root, set scrollEl\n\n if (scrollRootEl !== rootEl) {\n scrollRootEl = rootEl;\n clearAutoScrolls();\n scrollEl = options.scroll;\n scrollCustomFn = options.scrollFn;\n\n if (scrollEl === true) {\n scrollEl = getParentAutoScrollElement(rootEl, true);\n }\n }\n\n var layersOut = 0;\n var currentParent = scrollEl;\n\n do {\n var el = currentParent,\n rect = getRect(el),\n top = rect.top,\n bottom = rect.bottom,\n left = rect.left,\n right = rect.right,\n width = rect.width,\n height = rect.height,\n canScrollX = void 0,\n canScrollY = void 0,\n scrollWidth = el.scrollWidth,\n scrollHeight = el.scrollHeight,\n elCSS = css(el),\n scrollPosX = el.scrollLeft,\n scrollPosY = el.scrollTop;\n\n if (el === winScroller) {\n canScrollX = width < scrollWidth && (elCSS.overflowX === 'auto' || elCSS.overflowX === 'scroll' || elCSS.overflowX === 'visible');\n canScrollY = height < scrollHeight && (elCSS.overflowY === 'auto' || elCSS.overflowY === 'scroll' || elCSS.overflowY === 'visible');\n } else {\n canScrollX = width < scrollWidth && (elCSS.overflowX === 'auto' || elCSS.overflowX === 'scroll');\n canScrollY = height < scrollHeight && (elCSS.overflowY === 'auto' || elCSS.overflowY === 'scroll');\n }\n\n var vx = canScrollX && (Math.abs(right - x) <= sens && scrollPosX + width < scrollWidth) - (Math.abs(left - x) <= sens && !!scrollPosX);\n var vy = canScrollY && (Math.abs(bottom - y) <= sens && scrollPosY + height < scrollHeight) - (Math.abs(top - y) <= sens && !!scrollPosY);\n\n if (!autoScrolls[layersOut]) {\n for (var i = 0; i <= layersOut; i++) {\n if (!autoScrolls[i]) {\n autoScrolls[i] = {};\n }\n }\n }\n\n if (autoScrolls[layersOut].vx != vx || autoScrolls[layersOut].vy != vy || autoScrolls[layersOut].el !== el) {\n autoScrolls[layersOut].el = el;\n autoScrolls[layersOut].vx = vx;\n autoScrolls[layersOut].vy = vy;\n clearInterval(autoScrolls[layersOut].pid);\n\n if (vx != 0 || vy != 0) {\n scrollThisInstance = true;\n /* jshint loopfunc:true */\n\n autoScrolls[layersOut].pid = setInterval(function () {\n // emulate drag over during autoscroll (fallback), emulating native DnD behaviour\n if (isFallback && this.layer === 0) {\n Sortable.active._onTouchMove(touchEvt$1); // To move ghost if it is positioned absolutely\n\n }\n\n var scrollOffsetY = autoScrolls[this.layer].vy ? autoScrolls[this.layer].vy * speed : 0;\n var scrollOffsetX = autoScrolls[this.layer].vx ? autoScrolls[this.layer].vx * speed : 0;\n\n if (typeof scrollCustomFn === 'function') {\n if (scrollCustomFn.call(Sortable.dragged.parentNode[expando], scrollOffsetX, scrollOffsetY, evt, touchEvt$1, autoScrolls[this.layer].el) !== 'continue') {\n return;\n }\n }\n\n scrollBy(autoScrolls[this.layer].el, scrollOffsetX, scrollOffsetY);\n }.bind({\n layer: layersOut\n }), 24);\n }\n }\n\n layersOut++;\n } while (options.bubbleScroll && currentParent !== winScroller && (currentParent = getParentAutoScrollElement(currentParent, false)));\n\n scrolling = scrollThisInstance; // in case another function catches scrolling as false in between when it is not\n}, 30);\n\nvar drop = function drop(_ref) {\n var originalEvent = _ref.originalEvent,\n putSortable = _ref.putSortable,\n dragEl = _ref.dragEl,\n activeSortable = _ref.activeSortable,\n dispatchSortableEvent = _ref.dispatchSortableEvent,\n hideGhostForTarget = _ref.hideGhostForTarget,\n unhideGhostForTarget = _ref.unhideGhostForTarget;\n if (!originalEvent) return;\n var toSortable = putSortable || activeSortable;\n hideGhostForTarget();\n var touch = originalEvent.changedTouches && originalEvent.changedTouches.length ? originalEvent.changedTouches[0] : originalEvent;\n var target = document.elementFromPoint(touch.clientX, touch.clientY);\n unhideGhostForTarget();\n\n if (toSortable && !toSortable.el.contains(target)) {\n dispatchSortableEvent('spill');\n this.onSpill({\n dragEl: dragEl,\n putSortable: putSortable\n });\n }\n};\n\nfunction Revert() {}\n\nRevert.prototype = {\n startIndex: null,\n dragStart: function dragStart(_ref2) {\n var oldDraggableIndex = _ref2.oldDraggableIndex;\n this.startIndex = oldDraggableIndex;\n },\n onSpill: function onSpill(_ref3) {\n var dragEl = _ref3.dragEl,\n putSortable = _ref3.putSortable;\n this.sortable.captureAnimationState();\n\n if (putSortable) {\n putSortable.captureAnimationState();\n }\n\n var nextSibling = getChild(this.sortable.el, this.startIndex, this.options);\n\n if (nextSibling) {\n this.sortable.el.insertBefore(dragEl, nextSibling);\n } else {\n this.sortable.el.appendChild(dragEl);\n }\n\n this.sortable.animateAll();\n\n if (putSortable) {\n putSortable.animateAll();\n }\n },\n drop: drop\n};\n\n_extends(Revert, {\n pluginName: 'revertOnSpill'\n});\n\nfunction Remove() {}\n\nRemove.prototype = {\n onSpill: function onSpill(_ref4) {\n var dragEl = _ref4.dragEl,\n putSortable = _ref4.putSortable;\n var parentSortable = putSortable || this.sortable;\n parentSortable.captureAnimationState();\n dragEl.parentNode && dragEl.parentNode.removeChild(dragEl);\n parentSortable.animateAll();\n },\n drop: drop\n};\n\n_extends(Remove, {\n pluginName: 'removeOnSpill'\n});\n\nvar lastSwapEl;\n\nfunction SwapPlugin() {\n function Swap() {\n this.defaults = {\n swapClass: 'sortable-swap-highlight'\n };\n }\n\n Swap.prototype = {\n dragStart: function dragStart(_ref) {\n var dragEl = _ref.dragEl;\n lastSwapEl = dragEl;\n },\n dragOverValid: function dragOverValid(_ref2) {\n var completed = _ref2.completed,\n target = _ref2.target,\n onMove = _ref2.onMove,\n activeSortable = _ref2.activeSortable,\n changed = _ref2.changed,\n cancel = _ref2.cancel;\n if (!activeSortable.options.swap) return;\n var el = this.sortable.el,\n options = this.options;\n\n if (target && target !== el) {\n var prevSwapEl = lastSwapEl;\n\n if (onMove(target) !== false) {\n toggleClass(target, options.swapClass, true);\n lastSwapEl = target;\n } else {\n lastSwapEl = null;\n }\n\n if (prevSwapEl && prevSwapEl !== lastSwapEl) {\n toggleClass(prevSwapEl, options.swapClass, false);\n }\n }\n\n changed();\n completed(true);\n cancel();\n },\n drop: function drop(_ref3) {\n var activeSortable = _ref3.activeSortable,\n putSortable = _ref3.putSortable,\n dragEl = _ref3.dragEl;\n var toSortable = putSortable || this.sortable;\n var options = this.options;\n lastSwapEl && toggleClass(lastSwapEl, options.swapClass, false);\n\n if (lastSwapEl && (options.swap || putSortable && putSortable.options.swap)) {\n if (dragEl !== lastSwapEl) {\n toSortable.captureAnimationState();\n if (toSortable !== activeSortable) activeSortable.captureAnimationState();\n swapNodes(dragEl, lastSwapEl);\n toSortable.animateAll();\n if (toSortable !== activeSortable) activeSortable.animateAll();\n }\n }\n },\n nulling: function nulling() {\n lastSwapEl = null;\n }\n };\n return _extends(Swap, {\n pluginName: 'swap',\n eventProperties: function eventProperties() {\n return {\n swapItem: lastSwapEl\n };\n }\n });\n}\n\nfunction swapNodes(n1, n2) {\n var p1 = n1.parentNode,\n p2 = n2.parentNode,\n i1,\n i2;\n if (!p1 || !p2 || p1.isEqualNode(n2) || p2.isEqualNode(n1)) return;\n i1 = index(n1);\n i2 = index(n2);\n\n if (p1.isEqualNode(p2) && i1 < i2) {\n i2++;\n }\n\n p1.insertBefore(n2, p1.children[i1]);\n p2.insertBefore(n1, p2.children[i2]);\n}\n\nvar multiDragElements = [],\n multiDragClones = [],\n lastMultiDragSelect,\n // for selection with modifier key down (SHIFT)\nmultiDragSortable,\n initialFolding = false,\n // Initial multi-drag fold when drag started\nfolding = false,\n // Folding any other time\ndragStarted = false,\n dragEl$1,\n clonesFromRect,\n clonesHidden;\n\nfunction MultiDragPlugin() {\n function MultiDrag(sortable) {\n // Bind all private methods\n for (var fn in this) {\n if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {\n this[fn] = this[fn].bind(this);\n }\n }\n\n if (sortable.options.supportPointer) {\n on(document, 'pointerup', this._deselectMultiDrag);\n } else {\n on(document, 'mouseup', this._deselectMultiDrag);\n on(document, 'touchend', this._deselectMultiDrag);\n }\n\n on(document, 'keydown', this._checkKeyDown);\n on(document, 'keyup', this._checkKeyUp);\n this.defaults = {\n selectedClass: 'sortable-selected',\n multiDragKey: null,\n setData: function setData(dataTransfer, dragEl) {\n var data = '';\n\n if (multiDragElements.length && multiDragSortable === sortable) {\n multiDragElements.forEach(function (multiDragElement, i) {\n data += (!i ? '' : ', ') + multiDragElement.textContent;\n });\n } else {\n data = dragEl.textContent;\n }\n\n dataTransfer.setData('Text', data);\n }\n };\n }\n\n MultiDrag.prototype = {\n multiDragKeyDown: false,\n isMultiDrag: false,\n delayStartGlobal: function delayStartGlobal(_ref) {\n var dragged = _ref.dragEl;\n dragEl$1 = dragged;\n },\n delayEnded: function delayEnded() {\n this.isMultiDrag = ~multiDragElements.indexOf(dragEl$1);\n },\n setupClone: function setupClone(_ref2) {\n var sortable = _ref2.sortable,\n cancel = _ref2.cancel;\n if (!this.isMultiDrag) return;\n\n for (var i = 0; i < multiDragElements.length; i++) {\n multiDragClones.push(clone(multiDragElements[i]));\n multiDragClones[i].sortableIndex = multiDragElements[i].sortableIndex;\n multiDragClones[i].draggable = false;\n multiDragClones[i].style['will-change'] = '';\n toggleClass(multiDragClones[i], this.options.selectedClass, false);\n multiDragElements[i] === dragEl$1 && toggleClass(multiDragClones[i], this.options.chosenClass, false);\n }\n\n sortable._hideClone();\n\n cancel();\n },\n clone: function clone(_ref3) {\n var sortable = _ref3.sortable,\n rootEl = _ref3.rootEl,\n dispatchSortableEvent = _ref3.dispatchSortableEvent,\n cancel = _ref3.cancel;\n if (!this.isMultiDrag) return;\n\n if (!this.options.removeCloneOnHide) {\n if (multiDragElements.length && multiDragSortable === sortable) {\n insertMultiDragClones(true, rootEl);\n dispatchSortableEvent('clone');\n cancel();\n }\n }\n },\n showClone: function showClone(_ref4) {\n var cloneNowShown = _ref4.cloneNowShown,\n rootEl = _ref4.rootEl,\n cancel = _ref4.cancel;\n if (!this.isMultiDrag) return;\n insertMultiDragClones(false, rootEl);\n multiDragClones.forEach(function (clone) {\n css(clone, 'display', '');\n });\n cloneNowShown();\n clonesHidden = false;\n cancel();\n },\n hideClone: function hideClone(_ref5) {\n var _this = this;\n\n var sortable = _ref5.sortable,\n cloneNowHidden = _ref5.cloneNowHidden,\n cancel = _ref5.cancel;\n if (!this.isMultiDrag) return;\n multiDragClones.forEach(function (clone) {\n css(clone, 'display', 'none');\n\n if (_this.options.removeCloneOnHide && clone.parentNode) {\n clone.parentNode.removeChild(clone);\n }\n });\n cloneNowHidden();\n clonesHidden = true;\n cancel();\n },\n dragStartGlobal: function dragStartGlobal(_ref6) {\n var sortable = _ref6.sortable;\n\n if (!this.isMultiDrag && multiDragSortable) {\n multiDragSortable.multiDrag._deselectMultiDrag();\n }\n\n multiDragElements.forEach(function (multiDragElement) {\n multiDragElement.sortableIndex = index(multiDragElement);\n }); // Sort multi-drag elements\n\n multiDragElements = multiDragElements.sort(function (a, b) {\n return a.sortableIndex - b.sortableIndex;\n });\n dragStarted = true;\n },\n dragStarted: function dragStarted(_ref7) {\n var _this2 = this;\n\n var sortable = _ref7.sortable;\n if (!this.isMultiDrag) return;\n\n if (this.options.sort) {\n // Capture rects,\n // hide multi drag elements (by positioning them absolute),\n // set multi drag elements rects to dragRect,\n // show multi drag elements,\n // animate to rects,\n // unset rects & remove from DOM\n sortable.captureAnimationState();\n\n if (this.options.animation) {\n multiDragElements.forEach(function (multiDragElement) {\n if (multiDragElement === dragEl$1) return;\n css(multiDragElement, 'position', 'absolute');\n });\n var dragRect = getRect(dragEl$1, false, true, true);\n multiDragElements.forEach(function (multiDragElement) {\n if (multiDragElement === dragEl$1) return;\n setRect(multiDragElement, dragRect);\n });\n folding = true;\n initialFolding = true;\n }\n }\n\n sortable.animateAll(function () {\n folding = false;\n initialFolding = false;\n\n if (_this2.options.animation) {\n multiDragElements.forEach(function (multiDragElement) {\n unsetRect(multiDragElement);\n });\n } // Remove all auxiliary multidrag items from el, if sorting enabled\n\n\n if (_this2.options.sort) {\n removeMultiDragElements();\n }\n });\n },\n dragOver: function dragOver(_ref8) {\n var target = _ref8.target,\n completed = _ref8.completed,\n cancel = _ref8.cancel;\n\n if (folding && ~multiDragElements.indexOf(target)) {\n completed(false);\n cancel();\n }\n },\n revert: function revert(_ref9) {\n var fromSortable = _ref9.fromSortable,\n rootEl = _ref9.rootEl,\n sortable = _ref9.sortable,\n dragRect = _ref9.dragRect;\n\n if (multiDragElements.length > 1) {\n // Setup unfold animation\n multiDragElements.forEach(function (multiDragElement) {\n sortable.addAnimationState({\n target: multiDragElement,\n rect: folding ? getRect(multiDragElement) : dragRect\n });\n unsetRect(multiDragElement);\n multiDragElement.fromRect = dragRect;\n fromSortable.removeAnimationState(multiDragElement);\n });\n folding = false;\n insertMultiDragElements(!this.options.removeCloneOnHide, rootEl);\n }\n },\n dragOverCompleted: function dragOverCompleted(_ref10) {\n var sortable = _ref10.sortable,\n isOwner = _ref10.isOwner,\n insertion = _ref10.insertion,\n activeSortable = _ref10.activeSortable,\n parentEl = _ref10.parentEl,\n putSortable = _ref10.putSortable;\n var options = this.options;\n\n if (insertion) {\n // Clones must be hidden before folding animation to capture dragRectAbsolute properly\n if (isOwner) {\n activeSortable._hideClone();\n }\n\n initialFolding = false; // If leaving sort:false root, or already folding - Fold to new location\n\n if (options.animation && multiDragElements.length > 1 && (folding || !isOwner && !activeSortable.options.sort && !putSortable)) {\n // Fold: Set all multi drag elements's rects to dragEl's rect when multi-drag elements are invisible\n var dragRectAbsolute = getRect(dragEl$1, false, true, true);\n multiDragElements.forEach(function (multiDragElement) {\n if (multiDragElement === dragEl$1) return;\n setRect(multiDragElement, dragRectAbsolute); // Move element(s) to end of parentEl so that it does not interfere with multi-drag clones insertion if they are inserted\n // while folding, and so that we can capture them again because old sortable will no longer be fromSortable\n\n parentEl.appendChild(multiDragElement);\n });\n folding = true;\n } // Clones must be shown (and check to remove multi drags) after folding when interfering multiDragElements are moved out\n\n\n if (!isOwner) {\n // Only remove if not folding (folding will remove them anyways)\n if (!folding) {\n removeMultiDragElements();\n }\n\n if (multiDragElements.length > 1) {\n var clonesHiddenBefore = clonesHidden;\n\n activeSortable._showClone(sortable); // Unfold animation for clones if showing from hidden\n\n\n if (activeSortable.options.animation && !clonesHidden && clonesHiddenBefore) {\n multiDragClones.forEach(function (clone) {\n activeSortable.addAnimationState({\n target: clone,\n rect: clonesFromRect\n });\n clone.fromRect = clonesFromRect;\n clone.thisAnimationDuration = null;\n });\n }\n } else {\n activeSortable._showClone(sortable);\n }\n }\n }\n },\n dragOverAnimationCapture: function dragOverAnimationCapture(_ref11) {\n var dragRect = _ref11.dragRect,\n isOwner = _ref11.isOwner,\n activeSortable = _ref11.activeSortable;\n multiDragElements.forEach(function (multiDragElement) {\n multiDragElement.thisAnimationDuration = null;\n });\n\n if (activeSortable.options.animation && !isOwner && activeSortable.multiDrag.isMultiDrag) {\n clonesFromRect = _extends({}, dragRect);\n var dragMatrix = matrix(dragEl$1, true);\n clonesFromRect.top -= dragMatrix.f;\n clonesFromRect.left -= dragMatrix.e;\n }\n },\n dragOverAnimationComplete: function dragOverAnimationComplete() {\n if (folding) {\n folding = false;\n removeMultiDragElements();\n }\n },\n drop: function drop(_ref12) {\n var evt = _ref12.originalEvent,\n rootEl = _ref12.rootEl,\n parentEl = _ref12.parentEl,\n sortable = _ref12.sortable,\n dispatchSortableEvent = _ref12.dispatchSortableEvent,\n oldIndex = _ref12.oldIndex,\n putSortable = _ref12.putSortable;\n var toSortable = putSortable || this.sortable;\n if (!evt) return;\n var options = this.options,\n children = parentEl.children; // Multi-drag selection\n\n if (!dragStarted) {\n if (options.multiDragKey && !this.multiDragKeyDown) {\n this._deselectMultiDrag();\n }\n\n toggleClass(dragEl$1, options.selectedClass, !~multiDragElements.indexOf(dragEl$1));\n\n if (!~multiDragElements.indexOf(dragEl$1)) {\n multiDragElements.push(dragEl$1);\n dispatchEvent({\n sortable: sortable,\n rootEl: rootEl,\n name: 'select',\n targetEl: dragEl$1,\n originalEvt: evt\n }); // Modifier activated, select from last to dragEl\n\n if (evt.shiftKey && lastMultiDragSelect && sortable.el.contains(lastMultiDragSelect)) {\n var lastIndex = index(lastMultiDragSelect),\n currentIndex = index(dragEl$1);\n\n if (~lastIndex && ~currentIndex && lastIndex !== currentIndex) {\n // Must include lastMultiDragSelect (select it), in case modified selection from no selection\n // (but previous selection existed)\n var n, i;\n\n if (currentIndex > lastIndex) {\n i = lastIndex;\n n = currentIndex;\n } else {\n i = currentIndex;\n n = lastIndex + 1;\n }\n\n for (; i < n; i++) {\n if (~multiDragElements.indexOf(children[i])) continue;\n toggleClass(children[i], options.selectedClass, true);\n multiDragElements.push(children[i]);\n dispatchEvent({\n sortable: sortable,\n rootEl: rootEl,\n name: 'select',\n targetEl: children[i],\n originalEvt: evt\n });\n }\n }\n } else {\n lastMultiDragSelect = dragEl$1;\n }\n\n multiDragSortable = toSortable;\n } else {\n multiDragElements.splice(multiDragElements.indexOf(dragEl$1), 1);\n lastMultiDragSelect = null;\n dispatchEvent({\n sortable: sortable,\n rootEl: rootEl,\n name: 'deselect',\n targetEl: dragEl$1,\n originalEvt: evt\n });\n }\n } // Multi-drag drop\n\n\n if (dragStarted && this.isMultiDrag) {\n // Do not \"unfold\" after around dragEl if reverted\n if ((parentEl[expando].options.sort || parentEl !== rootEl) && multiDragElements.length > 1) {\n var dragRect = getRect(dragEl$1),\n multiDragIndex = index(dragEl$1, ':not(.' + this.options.selectedClass + ')');\n if (!initialFolding && options.animation) dragEl$1.thisAnimationDuration = null;\n toSortable.captureAnimationState();\n\n if (!initialFolding) {\n if (options.animation) {\n dragEl$1.fromRect = dragRect;\n multiDragElements.forEach(function (multiDragElement) {\n multiDragElement.thisAnimationDuration = null;\n\n if (multiDragElement !== dragEl$1) {\n var rect = folding ? getRect(multiDragElement) : dragRect;\n multiDragElement.fromRect = rect; // Prepare unfold animation\n\n toSortable.addAnimationState({\n target: multiDragElement,\n rect: rect\n });\n }\n });\n } // Multi drag elements are not necessarily removed from the DOM on drop, so to reinsert\n // properly they must all be removed\n\n\n removeMultiDragElements();\n multiDragElements.forEach(function (multiDragElement) {\n if (children[multiDragIndex]) {\n parentEl.insertBefore(multiDragElement, children[multiDragIndex]);\n } else {\n parentEl.appendChild(multiDragElement);\n }\n\n multiDragIndex++;\n }); // If initial folding is done, the elements may have changed position because they are now\n // unfolding around dragEl, even though dragEl may not have his index changed, so update event\n // must be fired here as Sortable will not.\n\n if (oldIndex === index(dragEl$1)) {\n var update = false;\n multiDragElements.forEach(function (multiDragElement) {\n if (multiDragElement.sortableIndex !== index(multiDragElement)) {\n update = true;\n return;\n }\n });\n\n if (update) {\n dispatchSortableEvent('update');\n }\n }\n } // Must be done after capturing individual rects (scroll bar)\n\n\n multiDragElements.forEach(function (multiDragElement) {\n unsetRect(multiDragElement);\n });\n toSortable.animateAll();\n }\n\n multiDragSortable = toSortable;\n } // Remove clones if necessary\n\n\n if (rootEl === parentEl || putSortable && putSortable.lastPutMode !== 'clone') {\n multiDragClones.forEach(function (clone) {\n clone.parentNode && clone.parentNode.removeChild(clone);\n });\n }\n },\n nullingGlobal: function nullingGlobal() {\n this.isMultiDrag = dragStarted = false;\n multiDragClones.length = 0;\n },\n destroyGlobal: function destroyGlobal() {\n this._deselectMultiDrag();\n\n off(document, 'pointerup', this._deselectMultiDrag);\n off(document, 'mouseup', this._deselectMultiDrag);\n off(document, 'touchend', this._deselectMultiDrag);\n off(document, 'keydown', this._checkKeyDown);\n off(document, 'keyup', this._checkKeyUp);\n },\n _deselectMultiDrag: function _deselectMultiDrag(evt) {\n if (typeof dragStarted !== \"undefined\" && dragStarted) return; // Only deselect if selection is in this sortable\n\n if (multiDragSortable !== this.sortable) return; // Only deselect if target is not item in this sortable\n\n if (evt && closest(evt.target, this.options.draggable, this.sortable.el, false)) return; // Only deselect if left click\n\n if (evt && evt.button !== 0) return;\n\n while (multiDragElements.length) {\n var el = multiDragElements[0];\n toggleClass(el, this.options.selectedClass, false);\n multiDragElements.shift();\n dispatchEvent({\n sortable: this.sortable,\n rootEl: this.sortable.el,\n name: 'deselect',\n targetEl: el,\n originalEvt: evt\n });\n }\n },\n _checkKeyDown: function _checkKeyDown(evt) {\n if (evt.key === this.options.multiDragKey) {\n this.multiDragKeyDown = true;\n }\n },\n _checkKeyUp: function _checkKeyUp(evt) {\n if (evt.key === this.options.multiDragKey) {\n this.multiDragKeyDown = false;\n }\n }\n };\n return _extends(MultiDrag, {\n // Static methods & properties\n pluginName: 'multiDrag',\n utils: {\n /**\r\n * Selects the provided multi-drag item\r\n * @param {HTMLElement} el The element to be selected\r\n */\n select: function select(el) {\n var sortable = el.parentNode[expando];\n if (!sortable || !sortable.options.multiDrag || ~multiDragElements.indexOf(el)) return;\n\n if (multiDragSortable && multiDragSortable !== sortable) {\n multiDragSortable.multiDrag._deselectMultiDrag();\n\n multiDragSortable = sortable;\n }\n\n toggleClass(el, sortable.options.selectedClass, true);\n multiDragElements.push(el);\n },\n\n /**\r\n * Deselects the provided multi-drag item\r\n * @param {HTMLElement} el The element to be deselected\r\n */\n deselect: function deselect(el) {\n var sortable = el.parentNode[expando],\n index = multiDragElements.indexOf(el);\n if (!sortable || !sortable.options.multiDrag || !~index) return;\n toggleClass(el, sortable.options.selectedClass, false);\n multiDragElements.splice(index, 1);\n }\n },\n eventProperties: function eventProperties() {\n var _this3 = this;\n\n var oldIndicies = [],\n newIndicies = [];\n multiDragElements.forEach(function (multiDragElement) {\n oldIndicies.push({\n multiDragElement: multiDragElement,\n index: multiDragElement.sortableIndex\n }); // multiDragElements will already be sorted if folding\n\n var newIndex;\n\n if (folding && multiDragElement !== dragEl$1) {\n newIndex = -1;\n } else if (folding) {\n newIndex = index(multiDragElement, ':not(.' + _this3.options.selectedClass + ')');\n } else {\n newIndex = index(multiDragElement);\n }\n\n newIndicies.push({\n multiDragElement: multiDragElement,\n index: newIndex\n });\n });\n return {\n items: _toConsumableArray(multiDragElements),\n clones: [].concat(multiDragClones),\n oldIndicies: oldIndicies,\n newIndicies: newIndicies\n };\n },\n optionListeners: {\n multiDragKey: function multiDragKey(key) {\n key = key.toLowerCase();\n\n if (key === 'ctrl') {\n key = 'Control';\n } else if (key.length > 1) {\n key = key.charAt(0).toUpperCase() + key.substr(1);\n }\n\n return key;\n }\n }\n });\n}\n\nfunction insertMultiDragElements(clonesInserted, rootEl) {\n multiDragElements.forEach(function (multiDragElement, i) {\n var target = rootEl.children[multiDragElement.sortableIndex + (clonesInserted ? Number(i) : 0)];\n\n if (target) {\n rootEl.insertBefore(multiDragElement, target);\n } else {\n rootEl.appendChild(multiDragElement);\n }\n });\n}\n/**\r\n * Insert multi-drag clones\r\n * @param {[Boolean]} elementsInserted Whether the multi-drag elements are inserted\r\n * @param {HTMLElement} rootEl\r\n */\n\n\nfunction insertMultiDragClones(elementsInserted, rootEl) {\n multiDragClones.forEach(function (clone, i) {\n var target = rootEl.children[clone.sortableIndex + (elementsInserted ? Number(i) : 0)];\n\n if (target) {\n rootEl.insertBefore(clone, target);\n } else {\n rootEl.appendChild(clone);\n }\n });\n}\n\nfunction removeMultiDragElements() {\n multiDragElements.forEach(function (multiDragElement) {\n if (multiDragElement === dragEl$1) return;\n multiDragElement.parentNode && multiDragElement.parentNode.removeChild(multiDragElement);\n });\n}\n\nSortable.mount(new AutoScrollPlugin());\nSortable.mount(Remove, Revert);\n\n/* harmony default export */ __webpack_exports__[\"default\"] = (Sortable);\n\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"/dO2.js","sources":["webpack:///./node_modules/sortablejs/modular/sortable.esm.js?fdd3"],"sourcesContent":["/**!\n * Sortable 1.10.2\n * @author\tRubaXa   <trash@rubaxa.org>\n * @author\towenm    <owen23355@gmail.com>\n * @license MIT\n */\nfunction _typeof(obj) {\n  if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n    _typeof = function (obj) {\n      return typeof obj;\n    };\n  } else {\n    _typeof = function (obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n    };\n  }\n\n  return _typeof(obj);\n}\n\nfunction _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nfunction _extends() {\n  _extends = Object.assign || function (target) {\n    for (var i = 1; i < arguments.length; i++) {\n      var source = arguments[i];\n\n      for (var key in source) {\n        if (Object.prototype.hasOwnProperty.call(source, key)) {\n          target[key] = source[key];\n        }\n      }\n    }\n\n    return target;\n  };\n\n  return _extends.apply(this, arguments);\n}\n\nfunction _objectSpread(target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i] != null ? arguments[i] : {};\n    var ownKeys = Object.keys(source);\n\n    if (typeof Object.getOwnPropertySymbols === 'function') {\n      ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {\n        return Object.getOwnPropertyDescriptor(source, sym).enumerable;\n      }));\n    }\n\n    ownKeys.forEach(function (key) {\n      _defineProperty(target, key, source[key]);\n    });\n  }\n\n  return target;\n}\n\nfunction _objectWithoutPropertiesLoose(source, excluded) {\n  if (source == null) return {};\n  var target = {};\n  var sourceKeys = Object.keys(source);\n  var key, i;\n\n  for (i = 0; i < sourceKeys.length; i++) {\n    key = sourceKeys[i];\n    if (excluded.indexOf(key) >= 0) continue;\n    target[key] = source[key];\n  }\n\n  return target;\n}\n\nfunction _objectWithoutProperties(source, excluded) {\n  if (source == null) return {};\n\n  var target = _objectWithoutPropertiesLoose(source, excluded);\n\n  var key, i;\n\n  if (Object.getOwnPropertySymbols) {\n    var sourceSymbolKeys = Object.getOwnPropertySymbols(source);\n\n    for (i = 0; i < sourceSymbolKeys.length; i++) {\n      key = sourceSymbolKeys[i];\n      if (excluded.indexOf(key) >= 0) continue;\n      if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;\n      target[key] = source[key];\n    }\n  }\n\n  return target;\n}\n\nfunction _toConsumableArray(arr) {\n  return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();\n}\n\nfunction _arrayWithoutHoles(arr) {\n  if (Array.isArray(arr)) {\n    for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];\n\n    return arr2;\n  }\n}\n\nfunction _iterableToArray(iter) {\n  if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === \"[object Arguments]\") return Array.from(iter);\n}\n\nfunction _nonIterableSpread() {\n  throw new TypeError(\"Invalid attempt to spread non-iterable instance\");\n}\n\nvar version = \"1.10.2\";\n\nfunction userAgent(pattern) {\n  if (typeof window !== 'undefined' && window.navigator) {\n    return !!\n    /*@__PURE__*/\n    navigator.userAgent.match(pattern);\n  }\n}\n\nvar IE11OrLess = userAgent(/(?:Trident.*rv[ :]?11\\.|msie|iemobile|Windows Phone)/i);\nvar Edge = userAgent(/Edge/i);\nvar FireFox = userAgent(/firefox/i);\nvar Safari = userAgent(/safari/i) && !userAgent(/chrome/i) && !userAgent(/android/i);\nvar IOS = userAgent(/iP(ad|od|hone)/i);\nvar ChromeForAndroid = userAgent(/chrome/i) && userAgent(/android/i);\n\nvar captureMode = {\n  capture: false,\n  passive: false\n};\n\nfunction on(el, event, fn) {\n  el.addEventListener(event, fn, !IE11OrLess && captureMode);\n}\n\nfunction off(el, event, fn) {\n  el.removeEventListener(event, fn, !IE11OrLess && captureMode);\n}\n\nfunction matches(\n/**HTMLElement*/\nel,\n/**String*/\nselector) {\n  if (!selector) return;\n  selector[0] === '>' && (selector = selector.substring(1));\n\n  if (el) {\n    try {\n      if (el.matches) {\n        return el.matches(selector);\n      } else if (el.msMatchesSelector) {\n        return el.msMatchesSelector(selector);\n      } else if (el.webkitMatchesSelector) {\n        return el.webkitMatchesSelector(selector);\n      }\n    } catch (_) {\n      return false;\n    }\n  }\n\n  return false;\n}\n\nfunction getParentOrHost(el) {\n  return el.host && el !== document && el.host.nodeType ? el.host : el.parentNode;\n}\n\nfunction closest(\n/**HTMLElement*/\nel,\n/**String*/\nselector,\n/**HTMLElement*/\nctx, includeCTX) {\n  if (el) {\n    ctx = ctx || document;\n\n    do {\n      if (selector != null && (selector[0] === '>' ? el.parentNode === ctx && matches(el, selector) : matches(el, selector)) || includeCTX && el === ctx) {\n        return el;\n      }\n\n      if (el === ctx) break;\n      /* jshint boss:true */\n    } while (el = getParentOrHost(el));\n  }\n\n  return null;\n}\n\nvar R_SPACE = /\\s+/g;\n\nfunction toggleClass(el, name, state) {\n  if (el && name) {\n    if (el.classList) {\n      el.classList[state ? 'add' : 'remove'](name);\n    } else {\n      var className = (' ' + el.className + ' ').replace(R_SPACE, ' ').replace(' ' + name + ' ', ' ');\n      el.className = (className + (state ? ' ' + name : '')).replace(R_SPACE, ' ');\n    }\n  }\n}\n\nfunction css(el, prop, val) {\n  var style = el && el.style;\n\n  if (style) {\n    if (val === void 0) {\n      if (document.defaultView && document.defaultView.getComputedStyle) {\n        val = document.defaultView.getComputedStyle(el, '');\n      } else if (el.currentStyle) {\n        val = el.currentStyle;\n      }\n\n      return prop === void 0 ? val : val[prop];\n    } else {\n      if (!(prop in style) && prop.indexOf('webkit') === -1) {\n        prop = '-webkit-' + prop;\n      }\n\n      style[prop] = val + (typeof val === 'string' ? '' : 'px');\n    }\n  }\n}\n\nfunction matrix(el, selfOnly) {\n  var appliedTransforms = '';\n\n  if (typeof el === 'string') {\n    appliedTransforms = el;\n  } else {\n    do {\n      var transform = css(el, 'transform');\n\n      if (transform && transform !== 'none') {\n        appliedTransforms = transform + ' ' + appliedTransforms;\n      }\n      /* jshint boss:true */\n\n    } while (!selfOnly && (el = el.parentNode));\n  }\n\n  var matrixFn = window.DOMMatrix || window.WebKitCSSMatrix || window.CSSMatrix || window.MSCSSMatrix;\n  /*jshint -W056 */\n\n  return matrixFn && new matrixFn(appliedTransforms);\n}\n\nfunction find(ctx, tagName, iterator) {\n  if (ctx) {\n    var list = ctx.getElementsByTagName(tagName),\n        i = 0,\n        n = list.length;\n\n    if (iterator) {\n      for (; i < n; i++) {\n        iterator(list[i], i);\n      }\n    }\n\n    return list;\n  }\n\n  return [];\n}\n\nfunction getWindowScrollingElement() {\n  var scrollingElement = document.scrollingElement;\n\n  if (scrollingElement) {\n    return scrollingElement;\n  } else {\n    return document.documentElement;\n  }\n}\n/**\r\n * Returns the \"bounding client rect\" of given element\r\n * @param  {HTMLElement} el                       The element whose boundingClientRect is wanted\r\n * @param  {[Boolean]} relativeToContainingBlock  Whether the rect should be relative to the containing block of (including) the container\r\n * @param  {[Boolean]} relativeToNonStaticParent  Whether the rect should be relative to the relative parent of (including) the contaienr\r\n * @param  {[Boolean]} undoScale                  Whether the container's scale() should be undone\r\n * @param  {[HTMLElement]} container              The parent the element will be placed in\r\n * @return {Object}                               The boundingClientRect of el, with specified adjustments\r\n */\n\n\nfunction getRect(el, relativeToContainingBlock, relativeToNonStaticParent, undoScale, container) {\n  if (!el.getBoundingClientRect && el !== window) return;\n  var elRect, top, left, bottom, right, height, width;\n\n  if (el !== window && el !== getWindowScrollingElement()) {\n    elRect = el.getBoundingClientRect();\n    top = elRect.top;\n    left = elRect.left;\n    bottom = elRect.bottom;\n    right = elRect.right;\n    height = elRect.height;\n    width = elRect.width;\n  } else {\n    top = 0;\n    left = 0;\n    bottom = window.innerHeight;\n    right = window.innerWidth;\n    height = window.innerHeight;\n    width = window.innerWidth;\n  }\n\n  if ((relativeToContainingBlock || relativeToNonStaticParent) && el !== window) {\n    // Adjust for translate()\n    container = container || el.parentNode; // solves #1123 (see: https://stackoverflow.com/a/37953806/6088312)\n    // Not needed on <= IE11\n\n    if (!IE11OrLess) {\n      do {\n        if (container && container.getBoundingClientRect && (css(container, 'transform') !== 'none' || relativeToNonStaticParent && css(container, 'position') !== 'static')) {\n          var containerRect = container.getBoundingClientRect(); // Set relative to edges of padding box of container\n\n          top -= containerRect.top + parseInt(css(container, 'border-top-width'));\n          left -= containerRect.left + parseInt(css(container, 'border-left-width'));\n          bottom = top + elRect.height;\n          right = left + elRect.width;\n          break;\n        }\n        /* jshint boss:true */\n\n      } while (container = container.parentNode);\n    }\n  }\n\n  if (undoScale && el !== window) {\n    // Adjust for scale()\n    var elMatrix = matrix(container || el),\n        scaleX = elMatrix && elMatrix.a,\n        scaleY = elMatrix && elMatrix.d;\n\n    if (elMatrix) {\n      top /= scaleY;\n      left /= scaleX;\n      width /= scaleX;\n      height /= scaleY;\n      bottom = top + height;\n      right = left + width;\n    }\n  }\n\n  return {\n    top: top,\n    left: left,\n    bottom: bottom,\n    right: right,\n    width: width,\n    height: height\n  };\n}\n/**\r\n * Checks if a side of an element is scrolled past a side of its parents\r\n * @param  {HTMLElement}  el           The element who's side being scrolled out of view is in question\r\n * @param  {String}       elSide       Side of the element in question ('top', 'left', 'right', 'bottom')\r\n * @param  {String}       parentSide   Side of the parent in question ('top', 'left', 'right', 'bottom')\r\n * @return {HTMLElement}               The parent scroll element that the el's side is scrolled past, or null if there is no such element\r\n */\n\n\nfunction isScrolledPast(el, elSide, parentSide) {\n  var parent = getParentAutoScrollElement(el, true),\n      elSideVal = getRect(el)[elSide];\n  /* jshint boss:true */\n\n  while (parent) {\n    var parentSideVal = getRect(parent)[parentSide],\n        visible = void 0;\n\n    if (parentSide === 'top' || parentSide === 'left') {\n      visible = elSideVal >= parentSideVal;\n    } else {\n      visible = elSideVal <= parentSideVal;\n    }\n\n    if (!visible) return parent;\n    if (parent === getWindowScrollingElement()) break;\n    parent = getParentAutoScrollElement(parent, false);\n  }\n\n  return false;\n}\n/**\r\n * Gets nth child of el, ignoring hidden children, sortable's elements (does not ignore clone if it's visible)\r\n * and non-draggable elements\r\n * @param  {HTMLElement} el       The parent element\r\n * @param  {Number} childNum      The index of the child\r\n * @param  {Object} options       Parent Sortable's options\r\n * @return {HTMLElement}          The child at index childNum, or null if not found\r\n */\n\n\nfunction getChild(el, childNum, options) {\n  var currentChild = 0,\n      i = 0,\n      children = el.children;\n\n  while (i < children.length) {\n    if (children[i].style.display !== 'none' && children[i] !== Sortable.ghost && children[i] !== Sortable.dragged && closest(children[i], options.draggable, el, false)) {\n      if (currentChild === childNum) {\n        return children[i];\n      }\n\n      currentChild++;\n    }\n\n    i++;\n  }\n\n  return null;\n}\n/**\r\n * Gets the last child in the el, ignoring ghostEl or invisible elements (clones)\r\n * @param  {HTMLElement} el       Parent element\r\n * @param  {selector} selector    Any other elements that should be ignored\r\n * @return {HTMLElement}          The last child, ignoring ghostEl\r\n */\n\n\nfunction lastChild(el, selector) {\n  var last = el.lastElementChild;\n\n  while (last && (last === Sortable.ghost || css(last, 'display') === 'none' || selector && !matches(last, selector))) {\n    last = last.previousElementSibling;\n  }\n\n  return last || null;\n}\n/**\r\n * Returns the index of an element within its parent for a selected set of\r\n * elements\r\n * @param  {HTMLElement} el\r\n * @param  {selector} selector\r\n * @return {number}\r\n */\n\n\nfunction index(el, selector) {\n  var index = 0;\n\n  if (!el || !el.parentNode) {\n    return -1;\n  }\n  /* jshint boss:true */\n\n\n  while (el = el.previousElementSibling) {\n    if (el.nodeName.toUpperCase() !== 'TEMPLATE' && el !== Sortable.clone && (!selector || matches(el, selector))) {\n      index++;\n    }\n  }\n\n  return index;\n}\n/**\r\n * Returns the scroll offset of the given element, added with all the scroll offsets of parent elements.\r\n * The value is returned in real pixels.\r\n * @param  {HTMLElement} el\r\n * @return {Array}             Offsets in the format of [left, top]\r\n */\n\n\nfunction getRelativeScrollOffset(el) {\n  var offsetLeft = 0,\n      offsetTop = 0,\n      winScroller = getWindowScrollingElement();\n\n  if (el) {\n    do {\n      var elMatrix = matrix(el),\n          scaleX = elMatrix.a,\n          scaleY = elMatrix.d;\n      offsetLeft += el.scrollLeft * scaleX;\n      offsetTop += el.scrollTop * scaleY;\n    } while (el !== winScroller && (el = el.parentNode));\n  }\n\n  return [offsetLeft, offsetTop];\n}\n/**\r\n * Returns the index of the object within the given array\r\n * @param  {Array} arr   Array that may or may not hold the object\r\n * @param  {Object} obj  An object that has a key-value pair unique to and identical to a key-value pair in the object you want to find\r\n * @return {Number}      The index of the object in the array, or -1\r\n */\n\n\nfunction indexOfObject(arr, obj) {\n  for (var i in arr) {\n    if (!arr.hasOwnProperty(i)) continue;\n\n    for (var key in obj) {\n      if (obj.hasOwnProperty(key) && obj[key] === arr[i][key]) return Number(i);\n    }\n  }\n\n  return -1;\n}\n\nfunction getParentAutoScrollElement(el, includeSelf) {\n  // skip to window\n  if (!el || !el.getBoundingClientRect) return getWindowScrollingElement();\n  var elem = el;\n  var gotSelf = false;\n\n  do {\n    // we don't need to get elem css if it isn't even overflowing in the first place (performance)\n    if (elem.clientWidth < elem.scrollWidth || elem.clientHeight < elem.scrollHeight) {\n      var elemCSS = css(elem);\n\n      if (elem.clientWidth < elem.scrollWidth && (elemCSS.overflowX == 'auto' || elemCSS.overflowX == 'scroll') || elem.clientHeight < elem.scrollHeight && (elemCSS.overflowY == 'auto' || elemCSS.overflowY == 'scroll')) {\n        if (!elem.getBoundingClientRect || elem === document.body) return getWindowScrollingElement();\n        if (gotSelf || includeSelf) return elem;\n        gotSelf = true;\n      }\n    }\n    /* jshint boss:true */\n\n  } while (elem = elem.parentNode);\n\n  return getWindowScrollingElement();\n}\n\nfunction extend(dst, src) {\n  if (dst && src) {\n    for (var key in src) {\n      if (src.hasOwnProperty(key)) {\n        dst[key] = src[key];\n      }\n    }\n  }\n\n  return dst;\n}\n\nfunction isRectEqual(rect1, rect2) {\n  return Math.round(rect1.top) === Math.round(rect2.top) && Math.round(rect1.left) === Math.round(rect2.left) && Math.round(rect1.height) === Math.round(rect2.height) && Math.round(rect1.width) === Math.round(rect2.width);\n}\n\nvar _throttleTimeout;\n\nfunction throttle(callback, ms) {\n  return function () {\n    if (!_throttleTimeout) {\n      var args = arguments,\n          _this = this;\n\n      if (args.length === 1) {\n        callback.call(_this, args[0]);\n      } else {\n        callback.apply(_this, args);\n      }\n\n      _throttleTimeout = setTimeout(function () {\n        _throttleTimeout = void 0;\n      }, ms);\n    }\n  };\n}\n\nfunction cancelThrottle() {\n  clearTimeout(_throttleTimeout);\n  _throttleTimeout = void 0;\n}\n\nfunction scrollBy(el, x, y) {\n  el.scrollLeft += x;\n  el.scrollTop += y;\n}\n\nfunction clone(el) {\n  var Polymer = window.Polymer;\n  var $ = window.jQuery || window.Zepto;\n\n  if (Polymer && Polymer.dom) {\n    return Polymer.dom(el).cloneNode(true);\n  } else if ($) {\n    return $(el).clone(true)[0];\n  } else {\n    return el.cloneNode(true);\n  }\n}\n\nfunction setRect(el, rect) {\n  css(el, 'position', 'absolute');\n  css(el, 'top', rect.top);\n  css(el, 'left', rect.left);\n  css(el, 'width', rect.width);\n  css(el, 'height', rect.height);\n}\n\nfunction unsetRect(el) {\n  css(el, 'position', '');\n  css(el, 'top', '');\n  css(el, 'left', '');\n  css(el, 'width', '');\n  css(el, 'height', '');\n}\n\nvar expando = 'Sortable' + new Date().getTime();\n\nfunction AnimationStateManager() {\n  var animationStates = [],\n      animationCallbackId;\n  return {\n    captureAnimationState: function captureAnimationState() {\n      animationStates = [];\n      if (!this.options.animation) return;\n      var children = [].slice.call(this.el.children);\n      children.forEach(function (child) {\n        if (css(child, 'display') === 'none' || child === Sortable.ghost) return;\n        animationStates.push({\n          target: child,\n          rect: getRect(child)\n        });\n\n        var fromRect = _objectSpread({}, animationStates[animationStates.length - 1].rect); // If animating: compensate for current animation\n\n\n        if (child.thisAnimationDuration) {\n          var childMatrix = matrix(child, true);\n\n          if (childMatrix) {\n            fromRect.top -= childMatrix.f;\n            fromRect.left -= childMatrix.e;\n          }\n        }\n\n        child.fromRect = fromRect;\n      });\n    },\n    addAnimationState: function addAnimationState(state) {\n      animationStates.push(state);\n    },\n    removeAnimationState: function removeAnimationState(target) {\n      animationStates.splice(indexOfObject(animationStates, {\n        target: target\n      }), 1);\n    },\n    animateAll: function animateAll(callback) {\n      var _this = this;\n\n      if (!this.options.animation) {\n        clearTimeout(animationCallbackId);\n        if (typeof callback === 'function') callback();\n        return;\n      }\n\n      var animating = false,\n          animationTime = 0;\n      animationStates.forEach(function (state) {\n        var time = 0,\n            target = state.target,\n            fromRect = target.fromRect,\n            toRect = getRect(target),\n            prevFromRect = target.prevFromRect,\n            prevToRect = target.prevToRect,\n            animatingRect = state.rect,\n            targetMatrix = matrix(target, true);\n\n        if (targetMatrix) {\n          // Compensate for current animation\n          toRect.top -= targetMatrix.f;\n          toRect.left -= targetMatrix.e;\n        }\n\n        target.toRect = toRect;\n\n        if (target.thisAnimationDuration) {\n          // Could also check if animatingRect is between fromRect and toRect\n          if (isRectEqual(prevFromRect, toRect) && !isRectEqual(fromRect, toRect) && // Make sure animatingRect is on line between toRect & fromRect\n          (animatingRect.top - toRect.top) / (animatingRect.left - toRect.left) === (fromRect.top - toRect.top) / (fromRect.left - toRect.left)) {\n            // If returning to same place as started from animation and on same axis\n            time = calculateRealTime(animatingRect, prevFromRect, prevToRect, _this.options);\n          }\n        } // if fromRect != toRect: animate\n\n\n        if (!isRectEqual(toRect, fromRect)) {\n          target.prevFromRect = fromRect;\n          target.prevToRect = toRect;\n\n          if (!time) {\n            time = _this.options.animation;\n          }\n\n          _this.animate(target, animatingRect, toRect, time);\n        }\n\n        if (time) {\n          animating = true;\n          animationTime = Math.max(animationTime, time);\n          clearTimeout(target.animationResetTimer);\n          target.animationResetTimer = setTimeout(function () {\n            target.animationTime = 0;\n            target.prevFromRect = null;\n            target.fromRect = null;\n            target.prevToRect = null;\n            target.thisAnimationDuration = null;\n          }, time);\n          target.thisAnimationDuration = time;\n        }\n      });\n      clearTimeout(animationCallbackId);\n\n      if (!animating) {\n        if (typeof callback === 'function') callback();\n      } else {\n        animationCallbackId = setTimeout(function () {\n          if (typeof callback === 'function') callback();\n        }, animationTime);\n      }\n\n      animationStates = [];\n    },\n    animate: function animate(target, currentRect, toRect, duration) {\n      if (duration) {\n        css(target, 'transition', '');\n        css(target, 'transform', '');\n        var elMatrix = matrix(this.el),\n            scaleX = elMatrix && elMatrix.a,\n            scaleY = elMatrix && elMatrix.d,\n            translateX = (currentRect.left - toRect.left) / (scaleX || 1),\n            translateY = (currentRect.top - toRect.top) / (scaleY || 1);\n        target.animatingX = !!translateX;\n        target.animatingY = !!translateY;\n        css(target, 'transform', 'translate3d(' + translateX + 'px,' + translateY + 'px,0)');\n        repaint(target); // repaint\n\n        css(target, 'transition', 'transform ' + duration + 'ms' + (this.options.easing ? ' ' + this.options.easing : ''));\n        css(target, 'transform', 'translate3d(0,0,0)');\n        typeof target.animated === 'number' && clearTimeout(target.animated);\n        target.animated = setTimeout(function () {\n          css(target, 'transition', '');\n          css(target, 'transform', '');\n          target.animated = false;\n          target.animatingX = false;\n          target.animatingY = false;\n        }, duration);\n      }\n    }\n  };\n}\n\nfunction repaint(target) {\n  return target.offsetWidth;\n}\n\nfunction calculateRealTime(animatingRect, fromRect, toRect, options) {\n  return Math.sqrt(Math.pow(fromRect.top - animatingRect.top, 2) + Math.pow(fromRect.left - animatingRect.left, 2)) / Math.sqrt(Math.pow(fromRect.top - toRect.top, 2) + Math.pow(fromRect.left - toRect.left, 2)) * options.animation;\n}\n\nvar plugins = [];\nvar defaults = {\n  initializeByDefault: true\n};\nvar PluginManager = {\n  mount: function mount(plugin) {\n    // Set default static properties\n    for (var option in defaults) {\n      if (defaults.hasOwnProperty(option) && !(option in plugin)) {\n        plugin[option] = defaults[option];\n      }\n    }\n\n    plugins.push(plugin);\n  },\n  pluginEvent: function pluginEvent(eventName, sortable, evt) {\n    var _this = this;\n\n    this.eventCanceled = false;\n\n    evt.cancel = function () {\n      _this.eventCanceled = true;\n    };\n\n    var eventNameGlobal = eventName + 'Global';\n    plugins.forEach(function (plugin) {\n      if (!sortable[plugin.pluginName]) return; // Fire global events if it exists in this sortable\n\n      if (sortable[plugin.pluginName][eventNameGlobal]) {\n        sortable[plugin.pluginName][eventNameGlobal](_objectSpread({\n          sortable: sortable\n        }, evt));\n      } // Only fire plugin event if plugin is enabled in this sortable,\n      // and plugin has event defined\n\n\n      if (sortable.options[plugin.pluginName] && sortable[plugin.pluginName][eventName]) {\n        sortable[plugin.pluginName][eventName](_objectSpread({\n          sortable: sortable\n        }, evt));\n      }\n    });\n  },\n  initializePlugins: function initializePlugins(sortable, el, defaults, options) {\n    plugins.forEach(function (plugin) {\n      var pluginName = plugin.pluginName;\n      if (!sortable.options[pluginName] && !plugin.initializeByDefault) return;\n      var initialized = new plugin(sortable, el, sortable.options);\n      initialized.sortable = sortable;\n      initialized.options = sortable.options;\n      sortable[pluginName] = initialized; // Add default options from plugin\n\n      _extends(defaults, initialized.defaults);\n    });\n\n    for (var option in sortable.options) {\n      if (!sortable.options.hasOwnProperty(option)) continue;\n      var modified = this.modifyOption(sortable, option, sortable.options[option]);\n\n      if (typeof modified !== 'undefined') {\n        sortable.options[option] = modified;\n      }\n    }\n  },\n  getEventProperties: function getEventProperties(name, sortable) {\n    var eventProperties = {};\n    plugins.forEach(function (plugin) {\n      if (typeof plugin.eventProperties !== 'function') return;\n\n      _extends(eventProperties, plugin.eventProperties.call(sortable[plugin.pluginName], name));\n    });\n    return eventProperties;\n  },\n  modifyOption: function modifyOption(sortable, name, value) {\n    var modifiedValue;\n    plugins.forEach(function (plugin) {\n      // Plugin must exist on the Sortable\n      if (!sortable[plugin.pluginName]) return; // If static option listener exists for this option, call in the context of the Sortable's instance of this plugin\n\n      if (plugin.optionListeners && typeof plugin.optionListeners[name] === 'function') {\n        modifiedValue = plugin.optionListeners[name].call(sortable[plugin.pluginName], value);\n      }\n    });\n    return modifiedValue;\n  }\n};\n\nfunction dispatchEvent(_ref) {\n  var sortable = _ref.sortable,\n      rootEl = _ref.rootEl,\n      name = _ref.name,\n      targetEl = _ref.targetEl,\n      cloneEl = _ref.cloneEl,\n      toEl = _ref.toEl,\n      fromEl = _ref.fromEl,\n      oldIndex = _ref.oldIndex,\n      newIndex = _ref.newIndex,\n      oldDraggableIndex = _ref.oldDraggableIndex,\n      newDraggableIndex = _ref.newDraggableIndex,\n      originalEvent = _ref.originalEvent,\n      putSortable = _ref.putSortable,\n      extraEventProperties = _ref.extraEventProperties;\n  sortable = sortable || rootEl && rootEl[expando];\n  if (!sortable) return;\n  var evt,\n      options = sortable.options,\n      onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1); // Support for new CustomEvent feature\n\n  if (window.CustomEvent && !IE11OrLess && !Edge) {\n    evt = new CustomEvent(name, {\n      bubbles: true,\n      cancelable: true\n    });\n  } else {\n    evt = document.createEvent('Event');\n    evt.initEvent(name, true, true);\n  }\n\n  evt.to = toEl || rootEl;\n  evt.from = fromEl || rootEl;\n  evt.item = targetEl || rootEl;\n  evt.clone = cloneEl;\n  evt.oldIndex = oldIndex;\n  evt.newIndex = newIndex;\n  evt.oldDraggableIndex = oldDraggableIndex;\n  evt.newDraggableIndex = newDraggableIndex;\n  evt.originalEvent = originalEvent;\n  evt.pullMode = putSortable ? putSortable.lastPutMode : undefined;\n\n  var allEventProperties = _objectSpread({}, extraEventProperties, PluginManager.getEventProperties(name, sortable));\n\n  for (var option in allEventProperties) {\n    evt[option] = allEventProperties[option];\n  }\n\n  if (rootEl) {\n    rootEl.dispatchEvent(evt);\n  }\n\n  if (options[onName]) {\n    options[onName].call(sortable, evt);\n  }\n}\n\nvar pluginEvent = function pluginEvent(eventName, sortable) {\n  var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {},\n      originalEvent = _ref.evt,\n      data = _objectWithoutProperties(_ref, [\"evt\"]);\n\n  PluginManager.pluginEvent.bind(Sortable)(eventName, sortable, _objectSpread({\n    dragEl: dragEl,\n    parentEl: parentEl,\n    ghostEl: ghostEl,\n    rootEl: rootEl,\n    nextEl: nextEl,\n    lastDownEl: lastDownEl,\n    cloneEl: cloneEl,\n    cloneHidden: cloneHidden,\n    dragStarted: moved,\n    putSortable: putSortable,\n    activeSortable: Sortable.active,\n    originalEvent: originalEvent,\n    oldIndex: oldIndex,\n    oldDraggableIndex: oldDraggableIndex,\n    newIndex: newIndex,\n    newDraggableIndex: newDraggableIndex,\n    hideGhostForTarget: _hideGhostForTarget,\n    unhideGhostForTarget: _unhideGhostForTarget,\n    cloneNowHidden: function cloneNowHidden() {\n      cloneHidden = true;\n    },\n    cloneNowShown: function cloneNowShown() {\n      cloneHidden = false;\n    },\n    dispatchSortableEvent: function dispatchSortableEvent(name) {\n      _dispatchEvent({\n        sortable: sortable,\n        name: name,\n        originalEvent: originalEvent\n      });\n    }\n  }, data));\n};\n\nfunction _dispatchEvent(info) {\n  dispatchEvent(_objectSpread({\n    putSortable: putSortable,\n    cloneEl: cloneEl,\n    targetEl: dragEl,\n    rootEl: rootEl,\n    oldIndex: oldIndex,\n    oldDraggableIndex: oldDraggableIndex,\n    newIndex: newIndex,\n    newDraggableIndex: newDraggableIndex\n  }, info));\n}\n\nvar dragEl,\n    parentEl,\n    ghostEl,\n    rootEl,\n    nextEl,\n    lastDownEl,\n    cloneEl,\n    cloneHidden,\n    oldIndex,\n    newIndex,\n    oldDraggableIndex,\n    newDraggableIndex,\n    activeGroup,\n    putSortable,\n    awaitingDragStarted = false,\n    ignoreNextClick = false,\n    sortables = [],\n    tapEvt,\n    touchEvt,\n    lastDx,\n    lastDy,\n    tapDistanceLeft,\n    tapDistanceTop,\n    moved,\n    lastTarget,\n    lastDirection,\n    pastFirstInvertThresh = false,\n    isCircumstantialInvert = false,\n    targetMoveDistance,\n    // For positioning ghost absolutely\nghostRelativeParent,\n    ghostRelativeParentInitialScroll = [],\n    // (left, top)\n_silent = false,\n    savedInputChecked = [];\n/** @const */\n\nvar documentExists = typeof document !== 'undefined',\n    PositionGhostAbsolutely = IOS,\n    CSSFloatProperty = Edge || IE11OrLess ? 'cssFloat' : 'float',\n    // This will not pass for IE9, because IE9 DnD only works on anchors\nsupportDraggable = documentExists && !ChromeForAndroid && !IOS && 'draggable' in document.createElement('div'),\n    supportCssPointerEvents = function () {\n  if (!documentExists) return; // false when <= IE11\n\n  if (IE11OrLess) {\n    return false;\n  }\n\n  var el = document.createElement('x');\n  el.style.cssText = 'pointer-events:auto';\n  return el.style.pointerEvents === 'auto';\n}(),\n    _detectDirection = function _detectDirection(el, options) {\n  var elCSS = css(el),\n      elWidth = parseInt(elCSS.width) - parseInt(elCSS.paddingLeft) - parseInt(elCSS.paddingRight) - parseInt(elCSS.borderLeftWidth) - parseInt(elCSS.borderRightWidth),\n      child1 = getChild(el, 0, options),\n      child2 = getChild(el, 1, options),\n      firstChildCSS = child1 && css(child1),\n      secondChildCSS = child2 && css(child2),\n      firstChildWidth = firstChildCSS && parseInt(firstChildCSS.marginLeft) + parseInt(firstChildCSS.marginRight) + getRect(child1).width,\n      secondChildWidth = secondChildCSS && parseInt(secondChildCSS.marginLeft) + parseInt(secondChildCSS.marginRight) + getRect(child2).width;\n\n  if (elCSS.display === 'flex') {\n    return elCSS.flexDirection === 'column' || elCSS.flexDirection === 'column-reverse' ? 'vertical' : 'horizontal';\n  }\n\n  if (elCSS.display === 'grid') {\n    return elCSS.gridTemplateColumns.split(' ').length <= 1 ? 'vertical' : 'horizontal';\n  }\n\n  if (child1 && firstChildCSS[\"float\"] && firstChildCSS[\"float\"] !== 'none') {\n    var touchingSideChild2 = firstChildCSS[\"float\"] === 'left' ? 'left' : 'right';\n    return child2 && (secondChildCSS.clear === 'both' || secondChildCSS.clear === touchingSideChild2) ? 'vertical' : 'horizontal';\n  }\n\n  return child1 && (firstChildCSS.display === 'block' || firstChildCSS.display === 'flex' || firstChildCSS.display === 'table' || firstChildCSS.display === 'grid' || firstChildWidth >= elWidth && elCSS[CSSFloatProperty] === 'none' || child2 && elCSS[CSSFloatProperty] === 'none' && firstChildWidth + secondChildWidth > elWidth) ? 'vertical' : 'horizontal';\n},\n    _dragElInRowColumn = function _dragElInRowColumn(dragRect, targetRect, vertical) {\n  var dragElS1Opp = vertical ? dragRect.left : dragRect.top,\n      dragElS2Opp = vertical ? dragRect.right : dragRect.bottom,\n      dragElOppLength = vertical ? dragRect.width : dragRect.height,\n      targetS1Opp = vertical ? targetRect.left : targetRect.top,\n      targetS2Opp = vertical ? targetRect.right : targetRect.bottom,\n      targetOppLength = vertical ? targetRect.width : targetRect.height;\n  return dragElS1Opp === targetS1Opp || dragElS2Opp === targetS2Opp || dragElS1Opp + dragElOppLength / 2 === targetS1Opp + targetOppLength / 2;\n},\n\n/**\n * Detects first nearest empty sortable to X and Y position using emptyInsertThreshold.\n * @param  {Number} x      X position\n * @param  {Number} y      Y position\n * @return {HTMLElement}   Element of the first found nearest Sortable\n */\n_detectNearestEmptySortable = function _detectNearestEmptySortable(x, y) {\n  var ret;\n  sortables.some(function (sortable) {\n    if (lastChild(sortable)) return;\n    var rect = getRect(sortable),\n        threshold = sortable[expando].options.emptyInsertThreshold,\n        insideHorizontally = x >= rect.left - threshold && x <= rect.right + threshold,\n        insideVertically = y >= rect.top - threshold && y <= rect.bottom + threshold;\n\n    if (threshold && insideHorizontally && insideVertically) {\n      return ret = sortable;\n    }\n  });\n  return ret;\n},\n    _prepareGroup = function _prepareGroup(options) {\n  function toFn(value, pull) {\n    return function (to, from, dragEl, evt) {\n      var sameGroup = to.options.group.name && from.options.group.name && to.options.group.name === from.options.group.name;\n\n      if (value == null && (pull || sameGroup)) {\n        // Default pull value\n        // Default pull and put value if same group\n        return true;\n      } else if (value == null || value === false) {\n        return false;\n      } else if (pull && value === 'clone') {\n        return value;\n      } else if (typeof value === 'function') {\n        return toFn(value(to, from, dragEl, evt), pull)(to, from, dragEl, evt);\n      } else {\n        var otherGroup = (pull ? to : from).options.group.name;\n        return value === true || typeof value === 'string' && value === otherGroup || value.join && value.indexOf(otherGroup) > -1;\n      }\n    };\n  }\n\n  var group = {};\n  var originalGroup = options.group;\n\n  if (!originalGroup || _typeof(originalGroup) != 'object') {\n    originalGroup = {\n      name: originalGroup\n    };\n  }\n\n  group.name = originalGroup.name;\n  group.checkPull = toFn(originalGroup.pull, true);\n  group.checkPut = toFn(originalGroup.put);\n  group.revertClone = originalGroup.revertClone;\n  options.group = group;\n},\n    _hideGhostForTarget = function _hideGhostForTarget() {\n  if (!supportCssPointerEvents && ghostEl) {\n    css(ghostEl, 'display', 'none');\n  }\n},\n    _unhideGhostForTarget = function _unhideGhostForTarget() {\n  if (!supportCssPointerEvents && ghostEl) {\n    css(ghostEl, 'display', '');\n  }\n}; // #1184 fix - Prevent click event on fallback if dragged but item not changed position\n\n\nif (documentExists) {\n  document.addEventListener('click', function (evt) {\n    if (ignoreNextClick) {\n      evt.preventDefault();\n      evt.stopPropagation && evt.stopPropagation();\n      evt.stopImmediatePropagation && evt.stopImmediatePropagation();\n      ignoreNextClick = false;\n      return false;\n    }\n  }, true);\n}\n\nvar nearestEmptyInsertDetectEvent = function nearestEmptyInsertDetectEvent(evt) {\n  if (dragEl) {\n    evt = evt.touches ? evt.touches[0] : evt;\n\n    var nearest = _detectNearestEmptySortable(evt.clientX, evt.clientY);\n\n    if (nearest) {\n      // Create imitation event\n      var event = {};\n\n      for (var i in evt) {\n        if (evt.hasOwnProperty(i)) {\n          event[i] = evt[i];\n        }\n      }\n\n      event.target = event.rootEl = nearest;\n      event.preventDefault = void 0;\n      event.stopPropagation = void 0;\n\n      nearest[expando]._onDragOver(event);\n    }\n  }\n};\n\nvar _checkOutsideTargetEl = function _checkOutsideTargetEl(evt) {\n  if (dragEl) {\n    dragEl.parentNode[expando]._isOutsideThisEl(evt.target);\n  }\n};\n/**\n * @class  Sortable\n * @param  {HTMLElement}  el\n * @param  {Object}       [options]\n */\n\n\nfunction Sortable(el, options) {\n  if (!(el && el.nodeType && el.nodeType === 1)) {\n    throw \"Sortable: `el` must be an HTMLElement, not \".concat({}.toString.call(el));\n  }\n\n  this.el = el; // root element\n\n  this.options = options = _extends({}, options); // Export instance\n\n  el[expando] = this;\n  var defaults = {\n    group: null,\n    sort: true,\n    disabled: false,\n    store: null,\n    handle: null,\n    draggable: /^[uo]l$/i.test(el.nodeName) ? '>li' : '>*',\n    swapThreshold: 1,\n    // percentage; 0 <= x <= 1\n    invertSwap: false,\n    // invert always\n    invertedSwapThreshold: null,\n    // will be set to same as swapThreshold if default\n    removeCloneOnHide: true,\n    direction: function direction() {\n      return _detectDirection(el, this.options);\n    },\n    ghostClass: 'sortable-ghost',\n    chosenClass: 'sortable-chosen',\n    dragClass: 'sortable-drag',\n    ignore: 'a, img',\n    filter: null,\n    preventOnFilter: true,\n    animation: 0,\n    easing: null,\n    setData: function setData(dataTransfer, dragEl) {\n      dataTransfer.setData('Text', dragEl.textContent);\n    },\n    dropBubble: false,\n    dragoverBubble: false,\n    dataIdAttr: 'data-id',\n    delay: 0,\n    delayOnTouchOnly: false,\n    touchStartThreshold: (Number.parseInt ? Number : window).parseInt(window.devicePixelRatio, 10) || 1,\n    forceFallback: false,\n    fallbackClass: 'sortable-fallback',\n    fallbackOnBody: false,\n    fallbackTolerance: 0,\n    fallbackOffset: {\n      x: 0,\n      y: 0\n    },\n    supportPointer: Sortable.supportPointer !== false && 'PointerEvent' in window,\n    emptyInsertThreshold: 5\n  };\n  PluginManager.initializePlugins(this, el, defaults); // Set default options\n\n  for (var name in defaults) {\n    !(name in options) && (options[name] = defaults[name]);\n  }\n\n  _prepareGroup(options); // Bind all private methods\n\n\n  for (var fn in this) {\n    if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {\n      this[fn] = this[fn].bind(this);\n    }\n  } // Setup drag mode\n\n\n  this.nativeDraggable = options.forceFallback ? false : supportDraggable;\n\n  if (this.nativeDraggable) {\n    // Touch start threshold cannot be greater than the native dragstart threshold\n    this.options.touchStartThreshold = 1;\n  } // Bind events\n\n\n  if (options.supportPointer) {\n    on(el, 'pointerdown', this._onTapStart);\n  } else {\n    on(el, 'mousedown', this._onTapStart);\n    on(el, 'touchstart', this._onTapStart);\n  }\n\n  if (this.nativeDraggable) {\n    on(el, 'dragover', this);\n    on(el, 'dragenter', this);\n  }\n\n  sortables.push(this.el); // Restore sorting\n\n  options.store && options.store.get && this.sort(options.store.get(this) || []); // Add animation state manager\n\n  _extends(this, AnimationStateManager());\n}\n\nSortable.prototype =\n/** @lends Sortable.prototype */\n{\n  constructor: Sortable,\n  _isOutsideThisEl: function _isOutsideThisEl(target) {\n    if (!this.el.contains(target) && target !== this.el) {\n      lastTarget = null;\n    }\n  },\n  _getDirection: function _getDirection(evt, target) {\n    return typeof this.options.direction === 'function' ? this.options.direction.call(this, evt, target, dragEl) : this.options.direction;\n  },\n  _onTapStart: function _onTapStart(\n  /** Event|TouchEvent */\n  evt) {\n    if (!evt.cancelable) return;\n\n    var _this = this,\n        el = this.el,\n        options = this.options,\n        preventOnFilter = options.preventOnFilter,\n        type = evt.type,\n        touch = evt.touches && evt.touches[0] || evt.pointerType && evt.pointerType === 'touch' && evt,\n        target = (touch || evt).target,\n        originalTarget = evt.target.shadowRoot && (evt.path && evt.path[0] || evt.composedPath && evt.composedPath()[0]) || target,\n        filter = options.filter;\n\n    _saveInputCheckedState(el); // Don't trigger start event when an element is been dragged, otherwise the evt.oldindex always wrong when set option.group.\n\n\n    if (dragEl) {\n      return;\n    }\n\n    if (/mousedown|pointerdown/.test(type) && evt.button !== 0 || options.disabled) {\n      return; // only left button and enabled\n    } // cancel dnd if original target is content editable\n\n\n    if (originalTarget.isContentEditable) {\n      return;\n    }\n\n    target = closest(target, options.draggable, el, false);\n\n    if (target && target.animated) {\n      return;\n    }\n\n    if (lastDownEl === target) {\n      // Ignoring duplicate `down`\n      return;\n    } // Get the index of the dragged element within its parent\n\n\n    oldIndex = index(target);\n    oldDraggableIndex = index(target, options.draggable); // Check filter\n\n    if (typeof filter === 'function') {\n      if (filter.call(this, evt, target, this)) {\n        _dispatchEvent({\n          sortable: _this,\n          rootEl: originalTarget,\n          name: 'filter',\n          targetEl: target,\n          toEl: el,\n          fromEl: el\n        });\n\n        pluginEvent('filter', _this, {\n          evt: evt\n        });\n        preventOnFilter && evt.cancelable && evt.preventDefault();\n        return; // cancel dnd\n      }\n    } else if (filter) {\n      filter = filter.split(',').some(function (criteria) {\n        criteria = closest(originalTarget, criteria.trim(), el, false);\n\n        if (criteria) {\n          _dispatchEvent({\n            sortable: _this,\n            rootEl: criteria,\n            name: 'filter',\n            targetEl: target,\n            fromEl: el,\n            toEl: el\n          });\n\n          pluginEvent('filter', _this, {\n            evt: evt\n          });\n          return true;\n        }\n      });\n\n      if (filter) {\n        preventOnFilter && evt.cancelable && evt.preventDefault();\n        return; // cancel dnd\n      }\n    }\n\n    if (options.handle && !closest(originalTarget, options.handle, el, false)) {\n      return;\n    } // Prepare `dragstart`\n\n\n    this._prepareDragStart(evt, touch, target);\n  },\n  _prepareDragStart: function _prepareDragStart(\n  /** Event */\n  evt,\n  /** Touch */\n  touch,\n  /** HTMLElement */\n  target) {\n    var _this = this,\n        el = _this.el,\n        options = _this.options,\n        ownerDocument = el.ownerDocument,\n        dragStartFn;\n\n    if (target && !dragEl && target.parentNode === el) {\n      var dragRect = getRect(target);\n      rootEl = el;\n      dragEl = target;\n      parentEl = dragEl.parentNode;\n      nextEl = dragEl.nextSibling;\n      lastDownEl = target;\n      activeGroup = options.group;\n      Sortable.dragged = dragEl;\n      tapEvt = {\n        target: dragEl,\n        clientX: (touch || evt).clientX,\n        clientY: (touch || evt).clientY\n      };\n      tapDistanceLeft = tapEvt.clientX - dragRect.left;\n      tapDistanceTop = tapEvt.clientY - dragRect.top;\n      this._lastX = (touch || evt).clientX;\n      this._lastY = (touch || evt).clientY;\n      dragEl.style['will-change'] = 'all';\n\n      dragStartFn = function dragStartFn() {\n        pluginEvent('delayEnded', _this, {\n          evt: evt\n        });\n\n        if (Sortable.eventCanceled) {\n          _this._onDrop();\n\n          return;\n        } // Delayed drag has been triggered\n        // we can re-enable the events: touchmove/mousemove\n\n\n        _this._disableDelayedDragEvents();\n\n        if (!FireFox && _this.nativeDraggable) {\n          dragEl.draggable = true;\n        } // Bind the events: dragstart/dragend\n\n\n        _this._triggerDragStart(evt, touch); // Drag start event\n\n\n        _dispatchEvent({\n          sortable: _this,\n          name: 'choose',\n          originalEvent: evt\n        }); // Chosen item\n\n\n        toggleClass(dragEl, options.chosenClass, true);\n      }; // Disable \"draggable\"\n\n\n      options.ignore.split(',').forEach(function (criteria) {\n        find(dragEl, criteria.trim(), _disableDraggable);\n      });\n      on(ownerDocument, 'dragover', nearestEmptyInsertDetectEvent);\n      on(ownerDocument, 'mousemove', nearestEmptyInsertDetectEvent);\n      on(ownerDocument, 'touchmove', nearestEmptyInsertDetectEvent);\n      on(ownerDocument, 'mouseup', _this._onDrop);\n      on(ownerDocument, 'touchend', _this._onDrop);\n      on(ownerDocument, 'touchcancel', _this._onDrop); // Make dragEl draggable (must be before delay for FireFox)\n\n      if (FireFox && this.nativeDraggable) {\n        this.options.touchStartThreshold = 4;\n        dragEl.draggable = true;\n      }\n\n      pluginEvent('delayStart', this, {\n        evt: evt\n      }); // Delay is impossible for native DnD in Edge or IE\n\n      if (options.delay && (!options.delayOnTouchOnly || touch) && (!this.nativeDraggable || !(Edge || IE11OrLess))) {\n        if (Sortable.eventCanceled) {\n          this._onDrop();\n\n          return;\n        } // If the user moves the pointer or let go the click or touch\n        // before the delay has been reached:\n        // disable the delayed drag\n\n\n        on(ownerDocument, 'mouseup', _this._disableDelayedDrag);\n        on(ownerDocument, 'touchend', _this._disableDelayedDrag);\n        on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);\n        on(ownerDocument, 'mousemove', _this._delayedDragTouchMoveHandler);\n        on(ownerDocument, 'touchmove', _this._delayedDragTouchMoveHandler);\n        options.supportPointer && on(ownerDocument, 'pointermove', _this._delayedDragTouchMoveHandler);\n        _this._dragStartTimer = setTimeout(dragStartFn, options.delay);\n      } else {\n        dragStartFn();\n      }\n    }\n  },\n  _delayedDragTouchMoveHandler: function _delayedDragTouchMoveHandler(\n  /** TouchEvent|PointerEvent **/\n  e) {\n    var touch = e.touches ? e.touches[0] : e;\n\n    if (Math.max(Math.abs(touch.clientX - this._lastX), Math.abs(touch.clientY - this._lastY)) >= Math.floor(this.options.touchStartThreshold / (this.nativeDraggable && window.devicePixelRatio || 1))) {\n      this._disableDelayedDrag();\n    }\n  },\n  _disableDelayedDrag: function _disableDelayedDrag() {\n    dragEl && _disableDraggable(dragEl);\n    clearTimeout(this._dragStartTimer);\n\n    this._disableDelayedDragEvents();\n  },\n  _disableDelayedDragEvents: function _disableDelayedDragEvents() {\n    var ownerDocument = this.el.ownerDocument;\n    off(ownerDocument, 'mouseup', this._disableDelayedDrag);\n    off(ownerDocument, 'touchend', this._disableDelayedDrag);\n    off(ownerDocument, 'touchcancel', this._disableDelayedDrag);\n    off(ownerDocument, 'mousemove', this._delayedDragTouchMoveHandler);\n    off(ownerDocument, 'touchmove', this._delayedDragTouchMoveHandler);\n    off(ownerDocument, 'pointermove', this._delayedDragTouchMoveHandler);\n  },\n  _triggerDragStart: function _triggerDragStart(\n  /** Event */\n  evt,\n  /** Touch */\n  touch) {\n    touch = touch || evt.pointerType == 'touch' && evt;\n\n    if (!this.nativeDraggable || touch) {\n      if (this.options.supportPointer) {\n        on(document, 'pointermove', this._onTouchMove);\n      } else if (touch) {\n        on(document, 'touchmove', this._onTouchMove);\n      } else {\n        on(document, 'mousemove', this._onTouchMove);\n      }\n    } else {\n      on(dragEl, 'dragend', this);\n      on(rootEl, 'dragstart', this._onDragStart);\n    }\n\n    try {\n      if (document.selection) {\n        // Timeout neccessary for IE9\n        _nextTick(function () {\n          document.selection.empty();\n        });\n      } else {\n        window.getSelection().removeAllRanges();\n      }\n    } catch (err) {}\n  },\n  _dragStarted: function _dragStarted(fallback, evt) {\n\n    awaitingDragStarted = false;\n\n    if (rootEl && dragEl) {\n      pluginEvent('dragStarted', this, {\n        evt: evt\n      });\n\n      if (this.nativeDraggable) {\n        on(document, 'dragover', _checkOutsideTargetEl);\n      }\n\n      var options = this.options; // Apply effect\n\n      !fallback && toggleClass(dragEl, options.dragClass, false);\n      toggleClass(dragEl, options.ghostClass, true);\n      Sortable.active = this;\n      fallback && this._appendGhost(); // Drag start event\n\n      _dispatchEvent({\n        sortable: this,\n        name: 'start',\n        originalEvent: evt\n      });\n    } else {\n      this._nulling();\n    }\n  },\n  _emulateDragOver: function _emulateDragOver() {\n    if (touchEvt) {\n      this._lastX = touchEvt.clientX;\n      this._lastY = touchEvt.clientY;\n\n      _hideGhostForTarget();\n\n      var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY);\n      var parent = target;\n\n      while (target && target.shadowRoot) {\n        target = target.shadowRoot.elementFromPoint(touchEvt.clientX, touchEvt.clientY);\n        if (target === parent) break;\n        parent = target;\n      }\n\n      dragEl.parentNode[expando]._isOutsideThisEl(target);\n\n      if (parent) {\n        do {\n          if (parent[expando]) {\n            var inserted = void 0;\n            inserted = parent[expando]._onDragOver({\n              clientX: touchEvt.clientX,\n              clientY: touchEvt.clientY,\n              target: target,\n              rootEl: parent\n            });\n\n            if (inserted && !this.options.dragoverBubble) {\n              break;\n            }\n          }\n\n          target = parent; // store last element\n        }\n        /* jshint boss:true */\n        while (parent = parent.parentNode);\n      }\n\n      _unhideGhostForTarget();\n    }\n  },\n  _onTouchMove: function _onTouchMove(\n  /**TouchEvent*/\n  evt) {\n    if (tapEvt) {\n      var options = this.options,\n          fallbackTolerance = options.fallbackTolerance,\n          fallbackOffset = options.fallbackOffset,\n          touch = evt.touches ? evt.touches[0] : evt,\n          ghostMatrix = ghostEl && matrix(ghostEl, true),\n          scaleX = ghostEl && ghostMatrix && ghostMatrix.a,\n          scaleY = ghostEl && ghostMatrix && ghostMatrix.d,\n          relativeScrollOffset = PositionGhostAbsolutely && ghostRelativeParent && getRelativeScrollOffset(ghostRelativeParent),\n          dx = (touch.clientX - tapEvt.clientX + fallbackOffset.x) / (scaleX || 1) + (relativeScrollOffset ? relativeScrollOffset[0] - ghostRelativeParentInitialScroll[0] : 0) / (scaleX || 1),\n          dy = (touch.clientY - tapEvt.clientY + fallbackOffset.y) / (scaleY || 1) + (relativeScrollOffset ? relativeScrollOffset[1] - ghostRelativeParentInitialScroll[1] : 0) / (scaleY || 1); // only set the status to dragging, when we are actually dragging\n\n      if (!Sortable.active && !awaitingDragStarted) {\n        if (fallbackTolerance && Math.max(Math.abs(touch.clientX - this._lastX), Math.abs(touch.clientY - this._lastY)) < fallbackTolerance) {\n          return;\n        }\n\n        this._onDragStart(evt, true);\n      }\n\n      if (ghostEl) {\n        if (ghostMatrix) {\n          ghostMatrix.e += dx - (lastDx || 0);\n          ghostMatrix.f += dy - (lastDy || 0);\n        } else {\n          ghostMatrix = {\n            a: 1,\n            b: 0,\n            c: 0,\n            d: 1,\n            e: dx,\n            f: dy\n          };\n        }\n\n        var cssMatrix = \"matrix(\".concat(ghostMatrix.a, \",\").concat(ghostMatrix.b, \",\").concat(ghostMatrix.c, \",\").concat(ghostMatrix.d, \",\").concat(ghostMatrix.e, \",\").concat(ghostMatrix.f, \")\");\n        css(ghostEl, 'webkitTransform', cssMatrix);\n        css(ghostEl, 'mozTransform', cssMatrix);\n        css(ghostEl, 'msTransform', cssMatrix);\n        css(ghostEl, 'transform', cssMatrix);\n        lastDx = dx;\n        lastDy = dy;\n        touchEvt = touch;\n      }\n\n      evt.cancelable && evt.preventDefault();\n    }\n  },\n  _appendGhost: function _appendGhost() {\n    // Bug if using scale(): https://stackoverflow.com/questions/2637058\n    // Not being adjusted for\n    if (!ghostEl) {\n      var container = this.options.fallbackOnBody ? document.body : rootEl,\n          rect = getRect(dragEl, true, PositionGhostAbsolutely, true, container),\n          options = this.options; // Position absolutely\n\n      if (PositionGhostAbsolutely) {\n        // Get relatively positioned parent\n        ghostRelativeParent = container;\n\n        while (css(ghostRelativeParent, 'position') === 'static' && css(ghostRelativeParent, 'transform') === 'none' && ghostRelativeParent !== document) {\n          ghostRelativeParent = ghostRelativeParent.parentNode;\n        }\n\n        if (ghostRelativeParent !== document.body && ghostRelativeParent !== document.documentElement) {\n          if (ghostRelativeParent === document) ghostRelativeParent = getWindowScrollingElement();\n          rect.top += ghostRelativeParent.scrollTop;\n          rect.left += ghostRelativeParent.scrollLeft;\n        } else {\n          ghostRelativeParent = getWindowScrollingElement();\n        }\n\n        ghostRelativeParentInitialScroll = getRelativeScrollOffset(ghostRelativeParent);\n      }\n\n      ghostEl = dragEl.cloneNode(true);\n      toggleClass(ghostEl, options.ghostClass, false);\n      toggleClass(ghostEl, options.fallbackClass, true);\n      toggleClass(ghostEl, options.dragClass, true);\n      css(ghostEl, 'transition', '');\n      css(ghostEl, 'transform', '');\n      css(ghostEl, 'box-sizing', 'border-box');\n      css(ghostEl, 'margin', 0);\n      css(ghostEl, 'top', rect.top);\n      css(ghostEl, 'left', rect.left);\n      css(ghostEl, 'width', rect.width);\n      css(ghostEl, 'height', rect.height);\n      css(ghostEl, 'opacity', '0.8');\n      css(ghostEl, 'position', PositionGhostAbsolutely ? 'absolute' : 'fixed');\n      css(ghostEl, 'zIndex', '100000');\n      css(ghostEl, 'pointerEvents', 'none');\n      Sortable.ghost = ghostEl;\n      container.appendChild(ghostEl); // Set transform-origin\n\n      css(ghostEl, 'transform-origin', tapDistanceLeft / parseInt(ghostEl.style.width) * 100 + '% ' + tapDistanceTop / parseInt(ghostEl.style.height) * 100 + '%');\n    }\n  },\n  _onDragStart: function _onDragStart(\n  /**Event*/\n  evt,\n  /**boolean*/\n  fallback) {\n    var _this = this;\n\n    var dataTransfer = evt.dataTransfer;\n    var options = _this.options;\n    pluginEvent('dragStart', this, {\n      evt: evt\n    });\n\n    if (Sortable.eventCanceled) {\n      this._onDrop();\n\n      return;\n    }\n\n    pluginEvent('setupClone', this);\n\n    if (!Sortable.eventCanceled) {\n      cloneEl = clone(dragEl);\n      cloneEl.draggable = false;\n      cloneEl.style['will-change'] = '';\n\n      this._hideClone();\n\n      toggleClass(cloneEl, this.options.chosenClass, false);\n      Sortable.clone = cloneEl;\n    } // #1143: IFrame support workaround\n\n\n    _this.cloneId = _nextTick(function () {\n      pluginEvent('clone', _this);\n      if (Sortable.eventCanceled) return;\n\n      if (!_this.options.removeCloneOnHide) {\n        rootEl.insertBefore(cloneEl, dragEl);\n      }\n\n      _this._hideClone();\n\n      _dispatchEvent({\n        sortable: _this,\n        name: 'clone'\n      });\n    });\n    !fallback && toggleClass(dragEl, options.dragClass, true); // Set proper drop events\n\n    if (fallback) {\n      ignoreNextClick = true;\n      _this._loopId = setInterval(_this._emulateDragOver, 50);\n    } else {\n      // Undo what was set in _prepareDragStart before drag started\n      off(document, 'mouseup', _this._onDrop);\n      off(document, 'touchend', _this._onDrop);\n      off(document, 'touchcancel', _this._onDrop);\n\n      if (dataTransfer) {\n        dataTransfer.effectAllowed = 'move';\n        options.setData && options.setData.call(_this, dataTransfer, dragEl);\n      }\n\n      on(document, 'drop', _this); // #1276 fix:\n\n      css(dragEl, 'transform', 'translateZ(0)');\n    }\n\n    awaitingDragStarted = true;\n    _this._dragStartId = _nextTick(_this._dragStarted.bind(_this, fallback, evt));\n    on(document, 'selectstart', _this);\n    moved = true;\n\n    if (Safari) {\n      css(document.body, 'user-select', 'none');\n    }\n  },\n  // Returns true - if no further action is needed (either inserted or another condition)\n  _onDragOver: function _onDragOver(\n  /**Event*/\n  evt) {\n    var el = this.el,\n        target = evt.target,\n        dragRect,\n        targetRect,\n        revert,\n        options = this.options,\n        group = options.group,\n        activeSortable = Sortable.active,\n        isOwner = activeGroup === group,\n        canSort = options.sort,\n        fromSortable = putSortable || activeSortable,\n        vertical,\n        _this = this,\n        completedFired = false;\n\n    if (_silent) return;\n\n    function dragOverEvent(name, extra) {\n      pluginEvent(name, _this, _objectSpread({\n        evt: evt,\n        isOwner: isOwner,\n        axis: vertical ? 'vertical' : 'horizontal',\n        revert: revert,\n        dragRect: dragRect,\n        targetRect: targetRect,\n        canSort: canSort,\n        fromSortable: fromSortable,\n        target: target,\n        completed: completed,\n        onMove: function onMove(target, after) {\n          return _onMove(rootEl, el, dragEl, dragRect, target, getRect(target), evt, after);\n        },\n        changed: changed\n      }, extra));\n    } // Capture animation state\n\n\n    function capture() {\n      dragOverEvent('dragOverAnimationCapture');\n\n      _this.captureAnimationState();\n\n      if (_this !== fromSortable) {\n        fromSortable.captureAnimationState();\n      }\n    } // Return invocation when dragEl is inserted (or completed)\n\n\n    function completed(insertion) {\n      dragOverEvent('dragOverCompleted', {\n        insertion: insertion\n      });\n\n      if (insertion) {\n        // Clones must be hidden before folding animation to capture dragRectAbsolute properly\n        if (isOwner) {\n          activeSortable._hideClone();\n        } else {\n          activeSortable._showClone(_this);\n        }\n\n        if (_this !== fromSortable) {\n          // Set ghost class to new sortable's ghost class\n          toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : activeSortable.options.ghostClass, false);\n          toggleClass(dragEl, options.ghostClass, true);\n        }\n\n        if (putSortable !== _this && _this !== Sortable.active) {\n          putSortable = _this;\n        } else if (_this === Sortable.active && putSortable) {\n          putSortable = null;\n        } // Animation\n\n\n        if (fromSortable === _this) {\n          _this._ignoreWhileAnimating = target;\n        }\n\n        _this.animateAll(function () {\n          dragOverEvent('dragOverAnimationComplete');\n          _this._ignoreWhileAnimating = null;\n        });\n\n        if (_this !== fromSortable) {\n          fromSortable.animateAll();\n          fromSortable._ignoreWhileAnimating = null;\n        }\n      } // Null lastTarget if it is not inside a previously swapped element\n\n\n      if (target === dragEl && !dragEl.animated || target === el && !target.animated) {\n        lastTarget = null;\n      } // no bubbling and not fallback\n\n\n      if (!options.dragoverBubble && !evt.rootEl && target !== document) {\n        dragEl.parentNode[expando]._isOutsideThisEl(evt.target); // Do not detect for empty insert if already inserted\n\n\n        !insertion && nearestEmptyInsertDetectEvent(evt);\n      }\n\n      !options.dragoverBubble && evt.stopPropagation && evt.stopPropagation();\n      return completedFired = true;\n    } // Call when dragEl has been inserted\n\n\n    function changed() {\n      newIndex = index(dragEl);\n      newDraggableIndex = index(dragEl, options.draggable);\n\n      _dispatchEvent({\n        sortable: _this,\n        name: 'change',\n        toEl: el,\n        newIndex: newIndex,\n        newDraggableIndex: newDraggableIndex,\n        originalEvent: evt\n      });\n    }\n\n    if (evt.preventDefault !== void 0) {\n      evt.cancelable && evt.preventDefault();\n    }\n\n    target = closest(target, options.draggable, el, true);\n    dragOverEvent('dragOver');\n    if (Sortable.eventCanceled) return completedFired;\n\n    if (dragEl.contains(evt.target) || target.animated && target.animatingX && target.animatingY || _this._ignoreWhileAnimating === target) {\n      return completed(false);\n    }\n\n    ignoreNextClick = false;\n\n    if (activeSortable && !options.disabled && (isOwner ? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list\n    : putSortable === this || (this.lastPutMode = activeGroup.checkPull(this, activeSortable, dragEl, evt)) && group.checkPut(this, activeSortable, dragEl, evt))) {\n      vertical = this._getDirection(evt, target) === 'vertical';\n      dragRect = getRect(dragEl);\n      dragOverEvent('dragOverValid');\n      if (Sortable.eventCanceled) return completedFired;\n\n      if (revert) {\n        parentEl = rootEl; // actualization\n\n        capture();\n\n        this._hideClone();\n\n        dragOverEvent('revert');\n\n        if (!Sortable.eventCanceled) {\n          if (nextEl) {\n            rootEl.insertBefore(dragEl, nextEl);\n          } else {\n            rootEl.appendChild(dragEl);\n          }\n        }\n\n        return completed(true);\n      }\n\n      var elLastChild = lastChild(el, options.draggable);\n\n      if (!elLastChild || _ghostIsLast(evt, vertical, this) && !elLastChild.animated) {\n        // If already at end of list: Do not insert\n        if (elLastChild === dragEl) {\n          return completed(false);\n        } // assign target only if condition is true\n\n\n        if (elLastChild && el === evt.target) {\n          target = elLastChild;\n        }\n\n        if (target) {\n          targetRect = getRect(target);\n        }\n\n        if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, !!target) !== false) {\n          capture();\n          el.appendChild(dragEl);\n          parentEl = el; // actualization\n\n          changed();\n          return completed(true);\n        }\n      } else if (target.parentNode === el) {\n        targetRect = getRect(target);\n        var direction = 0,\n            targetBeforeFirstSwap,\n            differentLevel = dragEl.parentNode !== el,\n            differentRowCol = !_dragElInRowColumn(dragEl.animated && dragEl.toRect || dragRect, target.animated && target.toRect || targetRect, vertical),\n            side1 = vertical ? 'top' : 'left',\n            scrolledPastTop = isScrolledPast(target, 'top', 'top') || isScrolledPast(dragEl, 'top', 'top'),\n            scrollBefore = scrolledPastTop ? scrolledPastTop.scrollTop : void 0;\n\n        if (lastTarget !== target) {\n          targetBeforeFirstSwap = targetRect[side1];\n          pastFirstInvertThresh = false;\n          isCircumstantialInvert = !differentRowCol && options.invertSwap || differentLevel;\n        }\n\n        direction = _getSwapDirection(evt, target, targetRect, vertical, differentRowCol ? 1 : options.swapThreshold, options.invertedSwapThreshold == null ? options.swapThreshold : options.invertedSwapThreshold, isCircumstantialInvert, lastTarget === target);\n        var sibling;\n\n        if (direction !== 0) {\n          // Check if target is beside dragEl in respective direction (ignoring hidden elements)\n          var dragIndex = index(dragEl);\n\n          do {\n            dragIndex -= direction;\n            sibling = parentEl.children[dragIndex];\n          } while (sibling && (css(sibling, 'display') === 'none' || sibling === ghostEl));\n        } // If dragEl is already beside target: Do not insert\n\n\n        if (direction === 0 || sibling === target) {\n          return completed(false);\n        }\n\n        lastTarget = target;\n        lastDirection = direction;\n        var nextSibling = target.nextElementSibling,\n            after = false;\n        after = direction === 1;\n\n        var moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect, evt, after);\n\n        if (moveVector !== false) {\n          if (moveVector === 1 || moveVector === -1) {\n            after = moveVector === 1;\n          }\n\n          _silent = true;\n          setTimeout(_unsilent, 30);\n          capture();\n\n          if (after && !nextSibling) {\n            el.appendChild(dragEl);\n          } else {\n            target.parentNode.insertBefore(dragEl, after ? nextSibling : target);\n          } // Undo chrome's scroll adjustment (has no effect on other browsers)\n\n\n          if (scrolledPastTop) {\n            scrollBy(scrolledPastTop, 0, scrollBefore - scrolledPastTop.scrollTop);\n          }\n\n          parentEl = dragEl.parentNode; // actualization\n          // must be done before animation\n\n          if (targetBeforeFirstSwap !== undefined && !isCircumstantialInvert) {\n            targetMoveDistance = Math.abs(targetBeforeFirstSwap - getRect(target)[side1]);\n          }\n\n          changed();\n          return completed(true);\n        }\n      }\n\n      if (el.contains(dragEl)) {\n        return completed(false);\n      }\n    }\n\n    return false;\n  },\n  _ignoreWhileAnimating: null,\n  _offMoveEvents: function _offMoveEvents() {\n    off(document, 'mousemove', this._onTouchMove);\n    off(document, 'touchmove', this._onTouchMove);\n    off(document, 'pointermove', this._onTouchMove);\n    off(document, 'dragover', nearestEmptyInsertDetectEvent);\n    off(document, 'mousemove', nearestEmptyInsertDetectEvent);\n    off(document, 'touchmove', nearestEmptyInsertDetectEvent);\n  },\n  _offUpEvents: function _offUpEvents() {\n    var ownerDocument = this.el.ownerDocument;\n    off(ownerDocument, 'mouseup', this._onDrop);\n    off(ownerDocument, 'touchend', this._onDrop);\n    off(ownerDocument, 'pointerup', this._onDrop);\n    off(ownerDocument, 'touchcancel', this._onDrop);\n    off(document, 'selectstart', this);\n  },\n  _onDrop: function _onDrop(\n  /**Event*/\n  evt) {\n    var el = this.el,\n        options = this.options; // Get the index of the dragged element within its parent\n\n    newIndex = index(dragEl);\n    newDraggableIndex = index(dragEl, options.draggable);\n    pluginEvent('drop', this, {\n      evt: evt\n    });\n    parentEl = dragEl && dragEl.parentNode; // Get again after plugin event\n\n    newIndex = index(dragEl);\n    newDraggableIndex = index(dragEl, options.draggable);\n\n    if (Sortable.eventCanceled) {\n      this._nulling();\n\n      return;\n    }\n\n    awaitingDragStarted = false;\n    isCircumstantialInvert = false;\n    pastFirstInvertThresh = false;\n    clearInterval(this._loopId);\n    clearTimeout(this._dragStartTimer);\n\n    _cancelNextTick(this.cloneId);\n\n    _cancelNextTick(this._dragStartId); // Unbind events\n\n\n    if (this.nativeDraggable) {\n      off(document, 'drop', this);\n      off(el, 'dragstart', this._onDragStart);\n    }\n\n    this._offMoveEvents();\n\n    this._offUpEvents();\n\n    if (Safari) {\n      css(document.body, 'user-select', '');\n    }\n\n    css(dragEl, 'transform', '');\n\n    if (evt) {\n      if (moved) {\n        evt.cancelable && evt.preventDefault();\n        !options.dropBubble && evt.stopPropagation();\n      }\n\n      ghostEl && ghostEl.parentNode && ghostEl.parentNode.removeChild(ghostEl);\n\n      if (rootEl === parentEl || putSortable && putSortable.lastPutMode !== 'clone') {\n        // Remove clone(s)\n        cloneEl && cloneEl.parentNode && cloneEl.parentNode.removeChild(cloneEl);\n      }\n\n      if (dragEl) {\n        if (this.nativeDraggable) {\n          off(dragEl, 'dragend', this);\n        }\n\n        _disableDraggable(dragEl);\n\n        dragEl.style['will-change'] = ''; // Remove classes\n        // ghostClass is added in dragStarted\n\n        if (moved && !awaitingDragStarted) {\n          toggleClass(dragEl, putSortable ? putSortable.options.ghostClass : this.options.ghostClass, false);\n        }\n\n        toggleClass(dragEl, this.options.chosenClass, false); // Drag stop event\n\n        _dispatchEvent({\n          sortable: this,\n          name: 'unchoose',\n          toEl: parentEl,\n          newIndex: null,\n          newDraggableIndex: null,\n          originalEvent: evt\n        });\n\n        if (rootEl !== parentEl) {\n          if (newIndex >= 0) {\n            // Add event\n            _dispatchEvent({\n              rootEl: parentEl,\n              name: 'add',\n              toEl: parentEl,\n              fromEl: rootEl,\n              originalEvent: evt\n            }); // Remove event\n\n\n            _dispatchEvent({\n              sortable: this,\n              name: 'remove',\n              toEl: parentEl,\n              originalEvent: evt\n            }); // drag from one list and drop into another\n\n\n            _dispatchEvent({\n              rootEl: parentEl,\n              name: 'sort',\n              toEl: parentEl,\n              fromEl: rootEl,\n              originalEvent: evt\n            });\n\n            _dispatchEvent({\n              sortable: this,\n              name: 'sort',\n              toEl: parentEl,\n              originalEvent: evt\n            });\n          }\n\n          putSortable && putSortable.save();\n        } else {\n          if (newIndex !== oldIndex) {\n            if (newIndex >= 0) {\n              // drag & drop within the same list\n              _dispatchEvent({\n                sortable: this,\n                name: 'update',\n                toEl: parentEl,\n                originalEvent: evt\n              });\n\n              _dispatchEvent({\n                sortable: this,\n                name: 'sort',\n                toEl: parentEl,\n                originalEvent: evt\n              });\n            }\n          }\n        }\n\n        if (Sortable.active) {\n          /* jshint eqnull:true */\n          if (newIndex == null || newIndex === -1) {\n            newIndex = oldIndex;\n            newDraggableIndex = oldDraggableIndex;\n          }\n\n          _dispatchEvent({\n            sortable: this,\n            name: 'end',\n            toEl: parentEl,\n            originalEvent: evt\n          }); // Save sorting\n\n\n          this.save();\n        }\n      }\n    }\n\n    this._nulling();\n  },\n  _nulling: function _nulling() {\n    pluginEvent('nulling', this);\n    rootEl = dragEl = parentEl = ghostEl = nextEl = cloneEl = lastDownEl = cloneHidden = tapEvt = touchEvt = moved = newIndex = newDraggableIndex = oldIndex = oldDraggableIndex = lastTarget = lastDirection = putSortable = activeGroup = Sortable.dragged = Sortable.ghost = Sortable.clone = Sortable.active = null;\n    savedInputChecked.forEach(function (el) {\n      el.checked = true;\n    });\n    savedInputChecked.length = lastDx = lastDy = 0;\n  },\n  handleEvent: function handleEvent(\n  /**Event*/\n  evt) {\n    switch (evt.type) {\n      case 'drop':\n      case 'dragend':\n        this._onDrop(evt);\n\n        break;\n\n      case 'dragenter':\n      case 'dragover':\n        if (dragEl) {\n          this._onDragOver(evt);\n\n          _globalDragOver(evt);\n        }\n\n        break;\n\n      case 'selectstart':\n        evt.preventDefault();\n        break;\n    }\n  },\n\n  /**\n   * Serializes the item into an array of string.\n   * @returns {String[]}\n   */\n  toArray: function toArray() {\n    var order = [],\n        el,\n        children = this.el.children,\n        i = 0,\n        n = children.length,\n        options = this.options;\n\n    for (; i < n; i++) {\n      el = children[i];\n\n      if (closest(el, options.draggable, this.el, false)) {\n        order.push(el.getAttribute(options.dataIdAttr) || _generateId(el));\n      }\n    }\n\n    return order;\n  },\n\n  /**\n   * Sorts the elements according to the array.\n   * @param  {String[]}  order  order of the items\n   */\n  sort: function sort(order) {\n    var items = {},\n        rootEl = this.el;\n    this.toArray().forEach(function (id, i) {\n      var el = rootEl.children[i];\n\n      if (closest(el, this.options.draggable, rootEl, false)) {\n        items[id] = el;\n      }\n    }, this);\n    order.forEach(function (id) {\n      if (items[id]) {\n        rootEl.removeChild(items[id]);\n        rootEl.appendChild(items[id]);\n      }\n    });\n  },\n\n  /**\n   * Save the current sorting\n   */\n  save: function save() {\n    var store = this.options.store;\n    store && store.set && store.set(this);\n  },\n\n  /**\n   * For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.\n   * @param   {HTMLElement}  el\n   * @param   {String}       [selector]  default: `options.draggable`\n   * @returns {HTMLElement|null}\n   */\n  closest: function closest$1(el, selector) {\n    return closest(el, selector || this.options.draggable, this.el, false);\n  },\n\n  /**\n   * Set/get option\n   * @param   {string} name\n   * @param   {*}      [value]\n   * @returns {*}\n   */\n  option: function option(name, value) {\n    var options = this.options;\n\n    if (value === void 0) {\n      return options[name];\n    } else {\n      var modifiedValue = PluginManager.modifyOption(this, name, value);\n\n      if (typeof modifiedValue !== 'undefined') {\n        options[name] = modifiedValue;\n      } else {\n        options[name] = value;\n      }\n\n      if (name === 'group') {\n        _prepareGroup(options);\n      }\n    }\n  },\n\n  /**\n   * Destroy\n   */\n  destroy: function destroy() {\n    pluginEvent('destroy', this);\n    var el = this.el;\n    el[expando] = null;\n    off(el, 'mousedown', this._onTapStart);\n    off(el, 'touchstart', this._onTapStart);\n    off(el, 'pointerdown', this._onTapStart);\n\n    if (this.nativeDraggable) {\n      off(el, 'dragover', this);\n      off(el, 'dragenter', this);\n    } // Remove draggable attributes\n\n\n    Array.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {\n      el.removeAttribute('draggable');\n    });\n\n    this._onDrop();\n\n    this._disableDelayedDragEvents();\n\n    sortables.splice(sortables.indexOf(this.el), 1);\n    this.el = el = null;\n  },\n  _hideClone: function _hideClone() {\n    if (!cloneHidden) {\n      pluginEvent('hideClone', this);\n      if (Sortable.eventCanceled) return;\n      css(cloneEl, 'display', 'none');\n\n      if (this.options.removeCloneOnHide && cloneEl.parentNode) {\n        cloneEl.parentNode.removeChild(cloneEl);\n      }\n\n      cloneHidden = true;\n    }\n  },\n  _showClone: function _showClone(putSortable) {\n    if (putSortable.lastPutMode !== 'clone') {\n      this._hideClone();\n\n      return;\n    }\n\n    if (cloneHidden) {\n      pluginEvent('showClone', this);\n      if (Sortable.eventCanceled) return; // show clone at dragEl or original position\n\n      if (rootEl.contains(dragEl) && !this.options.group.revertClone) {\n        rootEl.insertBefore(cloneEl, dragEl);\n      } else if (nextEl) {\n        rootEl.insertBefore(cloneEl, nextEl);\n      } else {\n        rootEl.appendChild(cloneEl);\n      }\n\n      if (this.options.group.revertClone) {\n        this.animate(dragEl, cloneEl);\n      }\n\n      css(cloneEl, 'display', '');\n      cloneHidden = false;\n    }\n  }\n};\n\nfunction _globalDragOver(\n/**Event*/\nevt) {\n  if (evt.dataTransfer) {\n    evt.dataTransfer.dropEffect = 'move';\n  }\n\n  evt.cancelable && evt.preventDefault();\n}\n\nfunction _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect, originalEvent, willInsertAfter) {\n  var evt,\n      sortable = fromEl[expando],\n      onMoveFn = sortable.options.onMove,\n      retVal; // Support for new CustomEvent feature\n\n  if (window.CustomEvent && !IE11OrLess && !Edge) {\n    evt = new CustomEvent('move', {\n      bubbles: true,\n      cancelable: true\n    });\n  } else {\n    evt = document.createEvent('Event');\n    evt.initEvent('move', true, true);\n  }\n\n  evt.to = toEl;\n  evt.from = fromEl;\n  evt.dragged = dragEl;\n  evt.draggedRect = dragRect;\n  evt.related = targetEl || toEl;\n  evt.relatedRect = targetRect || getRect(toEl);\n  evt.willInsertAfter = willInsertAfter;\n  evt.originalEvent = originalEvent;\n  fromEl.dispatchEvent(evt);\n\n  if (onMoveFn) {\n    retVal = onMoveFn.call(sortable, evt, originalEvent);\n  }\n\n  return retVal;\n}\n\nfunction _disableDraggable(el) {\n  el.draggable = false;\n}\n\nfunction _unsilent() {\n  _silent = false;\n}\n\nfunction _ghostIsLast(evt, vertical, sortable) {\n  var rect = getRect(lastChild(sortable.el, sortable.options.draggable));\n  var spacer = 10;\n  return vertical ? evt.clientX > rect.right + spacer || evt.clientX <= rect.right && evt.clientY > rect.bottom && evt.clientX >= rect.left : evt.clientX > rect.right && evt.clientY > rect.top || evt.clientX <= rect.right && evt.clientY > rect.bottom + spacer;\n}\n\nfunction _getSwapDirection(evt, target, targetRect, vertical, swapThreshold, invertedSwapThreshold, invertSwap, isLastTarget) {\n  var mouseOnAxis = vertical ? evt.clientY : evt.clientX,\n      targetLength = vertical ? targetRect.height : targetRect.width,\n      targetS1 = vertical ? targetRect.top : targetRect.left,\n      targetS2 = vertical ? targetRect.bottom : targetRect.right,\n      invert = false;\n\n  if (!invertSwap) {\n    // Never invert or create dragEl shadow when target movemenet causes mouse to move past the end of regular swapThreshold\n    if (isLastTarget && targetMoveDistance < targetLength * swapThreshold) {\n      // multiplied only by swapThreshold because mouse will already be inside target by (1 - threshold) * targetLength / 2\n      // check if past first invert threshold on side opposite of lastDirection\n      if (!pastFirstInvertThresh && (lastDirection === 1 ? mouseOnAxis > targetS1 + targetLength * invertedSwapThreshold / 2 : mouseOnAxis < targetS2 - targetLength * invertedSwapThreshold / 2)) {\n        // past first invert threshold, do not restrict inverted threshold to dragEl shadow\n        pastFirstInvertThresh = true;\n      }\n\n      if (!pastFirstInvertThresh) {\n        // dragEl shadow (target move distance shadow)\n        if (lastDirection === 1 ? mouseOnAxis < targetS1 + targetMoveDistance // over dragEl shadow\n        : mouseOnAxis > targetS2 - targetMoveDistance) {\n          return -lastDirection;\n        }\n      } else {\n        invert = true;\n      }\n    } else {\n      // Regular\n      if (mouseOnAxis > targetS1 + targetLength * (1 - swapThreshold) / 2 && mouseOnAxis < targetS2 - targetLength * (1 - swapThreshold) / 2) {\n        return _getInsertDirection(target);\n      }\n    }\n  }\n\n  invert = invert || invertSwap;\n\n  if (invert) {\n    // Invert of regular\n    if (mouseOnAxis < targetS1 + targetLength * invertedSwapThreshold / 2 || mouseOnAxis > targetS2 - targetLength * invertedSwapThreshold / 2) {\n      return mouseOnAxis > targetS1 + targetLength / 2 ? 1 : -1;\n    }\n  }\n\n  return 0;\n}\n/**\n * Gets the direction dragEl must be swapped relative to target in order to make it\n * seem that dragEl has been \"inserted\" into that element's position\n * @param  {HTMLElement} target       The target whose position dragEl is being inserted at\n * @return {Number}                   Direction dragEl must be swapped\n */\n\n\nfunction _getInsertDirection(target) {\n  if (index(dragEl) < index(target)) {\n    return 1;\n  } else {\n    return -1;\n  }\n}\n/**\n * Generate id\n * @param   {HTMLElement} el\n * @returns {String}\n * @private\n */\n\n\nfunction _generateId(el) {\n  var str = el.tagName + el.className + el.src + el.href + el.textContent,\n      i = str.length,\n      sum = 0;\n\n  while (i--) {\n    sum += str.charCodeAt(i);\n  }\n\n  return sum.toString(36);\n}\n\nfunction _saveInputCheckedState(root) {\n  savedInputChecked.length = 0;\n  var inputs = root.getElementsByTagName('input');\n  var idx = inputs.length;\n\n  while (idx--) {\n    var el = inputs[idx];\n    el.checked && savedInputChecked.push(el);\n  }\n}\n\nfunction _nextTick(fn) {\n  return setTimeout(fn, 0);\n}\n\nfunction _cancelNextTick(id) {\n  return clearTimeout(id);\n} // Fixed #973:\n\n\nif (documentExists) {\n  on(document, 'touchmove', function (evt) {\n    if ((Sortable.active || awaitingDragStarted) && evt.cancelable) {\n      evt.preventDefault();\n    }\n  });\n} // Export utils\n\n\nSortable.utils = {\n  on: on,\n  off: off,\n  css: css,\n  find: find,\n  is: function is(el, selector) {\n    return !!closest(el, selector, el, false);\n  },\n  extend: extend,\n  throttle: throttle,\n  closest: closest,\n  toggleClass: toggleClass,\n  clone: clone,\n  index: index,\n  nextTick: _nextTick,\n  cancelNextTick: _cancelNextTick,\n  detectDirection: _detectDirection,\n  getChild: getChild\n};\n/**\n * Get the Sortable instance of an element\n * @param  {HTMLElement} element The element\n * @return {Sortable|undefined}         The instance of Sortable\n */\n\nSortable.get = function (element) {\n  return element[expando];\n};\n/**\n * Mount a plugin to Sortable\n * @param  {...SortablePlugin|SortablePlugin[]} plugins       Plugins being mounted\n */\n\n\nSortable.mount = function () {\n  for (var _len = arguments.length, plugins = new Array(_len), _key = 0; _key < _len; _key++) {\n    plugins[_key] = arguments[_key];\n  }\n\n  if (plugins[0].constructor === Array) plugins = plugins[0];\n  plugins.forEach(function (plugin) {\n    if (!plugin.prototype || !plugin.prototype.constructor) {\n      throw \"Sortable: Mounted plugin must be a constructor function, not \".concat({}.toString.call(plugin));\n    }\n\n    if (plugin.utils) Sortable.utils = _objectSpread({}, Sortable.utils, plugin.utils);\n    PluginManager.mount(plugin);\n  });\n};\n/**\n * Create sortable instance\n * @param {HTMLElement}  el\n * @param {Object}      [options]\n */\n\n\nSortable.create = function (el, options) {\n  return new Sortable(el, options);\n}; // Export\n\n\nSortable.version = version;\n\nvar autoScrolls = [],\n    scrollEl,\n    scrollRootEl,\n    scrolling = false,\n    lastAutoScrollX,\n    lastAutoScrollY,\n    touchEvt$1,\n    pointerElemChangedInterval;\n\nfunction AutoScrollPlugin() {\n  function AutoScroll() {\n    this.defaults = {\n      scroll: true,\n      scrollSensitivity: 30,\n      scrollSpeed: 10,\n      bubbleScroll: true\n    }; // Bind all private methods\n\n    for (var fn in this) {\n      if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {\n        this[fn] = this[fn].bind(this);\n      }\n    }\n  }\n\n  AutoScroll.prototype = {\n    dragStarted: function dragStarted(_ref) {\n      var originalEvent = _ref.originalEvent;\n\n      if (this.sortable.nativeDraggable) {\n        on(document, 'dragover', this._handleAutoScroll);\n      } else {\n        if (this.options.supportPointer) {\n          on(document, 'pointermove', this._handleFallbackAutoScroll);\n        } else if (originalEvent.touches) {\n          on(document, 'touchmove', this._handleFallbackAutoScroll);\n        } else {\n          on(document, 'mousemove', this._handleFallbackAutoScroll);\n        }\n      }\n    },\n    dragOverCompleted: function dragOverCompleted(_ref2) {\n      var originalEvent = _ref2.originalEvent;\n\n      // For when bubbling is canceled and using fallback (fallback 'touchmove' always reached)\n      if (!this.options.dragOverBubble && !originalEvent.rootEl) {\n        this._handleAutoScroll(originalEvent);\n      }\n    },\n    drop: function drop() {\n      if (this.sortable.nativeDraggable) {\n        off(document, 'dragover', this._handleAutoScroll);\n      } else {\n        off(document, 'pointermove', this._handleFallbackAutoScroll);\n        off(document, 'touchmove', this._handleFallbackAutoScroll);\n        off(document, 'mousemove', this._handleFallbackAutoScroll);\n      }\n\n      clearPointerElemChangedInterval();\n      clearAutoScrolls();\n      cancelThrottle();\n    },\n    nulling: function nulling() {\n      touchEvt$1 = scrollRootEl = scrollEl = scrolling = pointerElemChangedInterval = lastAutoScrollX = lastAutoScrollY = null;\n      autoScrolls.length = 0;\n    },\n    _handleFallbackAutoScroll: function _handleFallbackAutoScroll(evt) {\n      this._handleAutoScroll(evt, true);\n    },\n    _handleAutoScroll: function _handleAutoScroll(evt, fallback) {\n      var _this = this;\n\n      var x = (evt.touches ? evt.touches[0] : evt).clientX,\n          y = (evt.touches ? evt.touches[0] : evt).clientY,\n          elem = document.elementFromPoint(x, y);\n      touchEvt$1 = evt; // IE does not seem to have native autoscroll,\n      // Edge's autoscroll seems too conditional,\n      // MACOS Safari does not have autoscroll,\n      // Firefox and Chrome are good\n\n      if (fallback || Edge || IE11OrLess || Safari) {\n        autoScroll(evt, this.options, elem, fallback); // Listener for pointer element change\n\n        var ogElemScroller = getParentAutoScrollElement(elem, true);\n\n        if (scrolling && (!pointerElemChangedInterval || x !== lastAutoScrollX || y !== lastAutoScrollY)) {\n          pointerElemChangedInterval && clearPointerElemChangedInterval(); // Detect for pointer elem change, emulating native DnD behaviour\n\n          pointerElemChangedInterval = setInterval(function () {\n            var newElem = getParentAutoScrollElement(document.elementFromPoint(x, y), true);\n\n            if (newElem !== ogElemScroller) {\n              ogElemScroller = newElem;\n              clearAutoScrolls();\n            }\n\n            autoScroll(evt, _this.options, newElem, fallback);\n          }, 10);\n          lastAutoScrollX = x;\n          lastAutoScrollY = y;\n        }\n      } else {\n        // if DnD is enabled (and browser has good autoscrolling), first autoscroll will already scroll, so get parent autoscroll of first autoscroll\n        if (!this.options.bubbleScroll || getParentAutoScrollElement(elem, true) === getWindowScrollingElement()) {\n          clearAutoScrolls();\n          return;\n        }\n\n        autoScroll(evt, this.options, getParentAutoScrollElement(elem, false), false);\n      }\n    }\n  };\n  return _extends(AutoScroll, {\n    pluginName: 'scroll',\n    initializeByDefault: true\n  });\n}\n\nfunction clearAutoScrolls() {\n  autoScrolls.forEach(function (autoScroll) {\n    clearInterval(autoScroll.pid);\n  });\n  autoScrolls = [];\n}\n\nfunction clearPointerElemChangedInterval() {\n  clearInterval(pointerElemChangedInterval);\n}\n\nvar autoScroll = throttle(function (evt, options, rootEl, isFallback) {\n  // Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521\n  if (!options.scroll) return;\n  var x = (evt.touches ? evt.touches[0] : evt).clientX,\n      y = (evt.touches ? evt.touches[0] : evt).clientY,\n      sens = options.scrollSensitivity,\n      speed = options.scrollSpeed,\n      winScroller = getWindowScrollingElement();\n  var scrollThisInstance = false,\n      scrollCustomFn; // New scroll root, set scrollEl\n\n  if (scrollRootEl !== rootEl) {\n    scrollRootEl = rootEl;\n    clearAutoScrolls();\n    scrollEl = options.scroll;\n    scrollCustomFn = options.scrollFn;\n\n    if (scrollEl === true) {\n      scrollEl = getParentAutoScrollElement(rootEl, true);\n    }\n  }\n\n  var layersOut = 0;\n  var currentParent = scrollEl;\n\n  do {\n    var el = currentParent,\n        rect = getRect(el),\n        top = rect.top,\n        bottom = rect.bottom,\n        left = rect.left,\n        right = rect.right,\n        width = rect.width,\n        height = rect.height,\n        canScrollX = void 0,\n        canScrollY = void 0,\n        scrollWidth = el.scrollWidth,\n        scrollHeight = el.scrollHeight,\n        elCSS = css(el),\n        scrollPosX = el.scrollLeft,\n        scrollPosY = el.scrollTop;\n\n    if (el === winScroller) {\n      canScrollX = width < scrollWidth && (elCSS.overflowX === 'auto' || elCSS.overflowX === 'scroll' || elCSS.overflowX === 'visible');\n      canScrollY = height < scrollHeight && (elCSS.overflowY === 'auto' || elCSS.overflowY === 'scroll' || elCSS.overflowY === 'visible');\n    } else {\n      canScrollX = width < scrollWidth && (elCSS.overflowX === 'auto' || elCSS.overflowX === 'scroll');\n      canScrollY = height < scrollHeight && (elCSS.overflowY === 'auto' || elCSS.overflowY === 'scroll');\n    }\n\n    var vx = canScrollX && (Math.abs(right - x) <= sens && scrollPosX + width < scrollWidth) - (Math.abs(left - x) <= sens && !!scrollPosX);\n    var vy = canScrollY && (Math.abs(bottom - y) <= sens && scrollPosY + height < scrollHeight) - (Math.abs(top - y) <= sens && !!scrollPosY);\n\n    if (!autoScrolls[layersOut]) {\n      for (var i = 0; i <= layersOut; i++) {\n        if (!autoScrolls[i]) {\n          autoScrolls[i] = {};\n        }\n      }\n    }\n\n    if (autoScrolls[layersOut].vx != vx || autoScrolls[layersOut].vy != vy || autoScrolls[layersOut].el !== el) {\n      autoScrolls[layersOut].el = el;\n      autoScrolls[layersOut].vx = vx;\n      autoScrolls[layersOut].vy = vy;\n      clearInterval(autoScrolls[layersOut].pid);\n\n      if (vx != 0 || vy != 0) {\n        scrollThisInstance = true;\n        /* jshint loopfunc:true */\n\n        autoScrolls[layersOut].pid = setInterval(function () {\n          // emulate drag over during autoscroll (fallback), emulating native DnD behaviour\n          if (isFallback && this.layer === 0) {\n            Sortable.active._onTouchMove(touchEvt$1); // To move ghost if it is positioned absolutely\n\n          }\n\n          var scrollOffsetY = autoScrolls[this.layer].vy ? autoScrolls[this.layer].vy * speed : 0;\n          var scrollOffsetX = autoScrolls[this.layer].vx ? autoScrolls[this.layer].vx * speed : 0;\n\n          if (typeof scrollCustomFn === 'function') {\n            if (scrollCustomFn.call(Sortable.dragged.parentNode[expando], scrollOffsetX, scrollOffsetY, evt, touchEvt$1, autoScrolls[this.layer].el) !== 'continue') {\n              return;\n            }\n          }\n\n          scrollBy(autoScrolls[this.layer].el, scrollOffsetX, scrollOffsetY);\n        }.bind({\n          layer: layersOut\n        }), 24);\n      }\n    }\n\n    layersOut++;\n  } while (options.bubbleScroll && currentParent !== winScroller && (currentParent = getParentAutoScrollElement(currentParent, false)));\n\n  scrolling = scrollThisInstance; // in case another function catches scrolling as false in between when it is not\n}, 30);\n\nvar drop = function drop(_ref) {\n  var originalEvent = _ref.originalEvent,\n      putSortable = _ref.putSortable,\n      dragEl = _ref.dragEl,\n      activeSortable = _ref.activeSortable,\n      dispatchSortableEvent = _ref.dispatchSortableEvent,\n      hideGhostForTarget = _ref.hideGhostForTarget,\n      unhideGhostForTarget = _ref.unhideGhostForTarget;\n  if (!originalEvent) return;\n  var toSortable = putSortable || activeSortable;\n  hideGhostForTarget();\n  var touch = originalEvent.changedTouches && originalEvent.changedTouches.length ? originalEvent.changedTouches[0] : originalEvent;\n  var target = document.elementFromPoint(touch.clientX, touch.clientY);\n  unhideGhostForTarget();\n\n  if (toSortable && !toSortable.el.contains(target)) {\n    dispatchSortableEvent('spill');\n    this.onSpill({\n      dragEl: dragEl,\n      putSortable: putSortable\n    });\n  }\n};\n\nfunction Revert() {}\n\nRevert.prototype = {\n  startIndex: null,\n  dragStart: function dragStart(_ref2) {\n    var oldDraggableIndex = _ref2.oldDraggableIndex;\n    this.startIndex = oldDraggableIndex;\n  },\n  onSpill: function onSpill(_ref3) {\n    var dragEl = _ref3.dragEl,\n        putSortable = _ref3.putSortable;\n    this.sortable.captureAnimationState();\n\n    if (putSortable) {\n      putSortable.captureAnimationState();\n    }\n\n    var nextSibling = getChild(this.sortable.el, this.startIndex, this.options);\n\n    if (nextSibling) {\n      this.sortable.el.insertBefore(dragEl, nextSibling);\n    } else {\n      this.sortable.el.appendChild(dragEl);\n    }\n\n    this.sortable.animateAll();\n\n    if (putSortable) {\n      putSortable.animateAll();\n    }\n  },\n  drop: drop\n};\n\n_extends(Revert, {\n  pluginName: 'revertOnSpill'\n});\n\nfunction Remove() {}\n\nRemove.prototype = {\n  onSpill: function onSpill(_ref4) {\n    var dragEl = _ref4.dragEl,\n        putSortable = _ref4.putSortable;\n    var parentSortable = putSortable || this.sortable;\n    parentSortable.captureAnimationState();\n    dragEl.parentNode && dragEl.parentNode.removeChild(dragEl);\n    parentSortable.animateAll();\n  },\n  drop: drop\n};\n\n_extends(Remove, {\n  pluginName: 'removeOnSpill'\n});\n\nvar lastSwapEl;\n\nfunction SwapPlugin() {\n  function Swap() {\n    this.defaults = {\n      swapClass: 'sortable-swap-highlight'\n    };\n  }\n\n  Swap.prototype = {\n    dragStart: function dragStart(_ref) {\n      var dragEl = _ref.dragEl;\n      lastSwapEl = dragEl;\n    },\n    dragOverValid: function dragOverValid(_ref2) {\n      var completed = _ref2.completed,\n          target = _ref2.target,\n          onMove = _ref2.onMove,\n          activeSortable = _ref2.activeSortable,\n          changed = _ref2.changed,\n          cancel = _ref2.cancel;\n      if (!activeSortable.options.swap) return;\n      var el = this.sortable.el,\n          options = this.options;\n\n      if (target && target !== el) {\n        var prevSwapEl = lastSwapEl;\n\n        if (onMove(target) !== false) {\n          toggleClass(target, options.swapClass, true);\n          lastSwapEl = target;\n        } else {\n          lastSwapEl = null;\n        }\n\n        if (prevSwapEl && prevSwapEl !== lastSwapEl) {\n          toggleClass(prevSwapEl, options.swapClass, false);\n        }\n      }\n\n      changed();\n      completed(true);\n      cancel();\n    },\n    drop: function drop(_ref3) {\n      var activeSortable = _ref3.activeSortable,\n          putSortable = _ref3.putSortable,\n          dragEl = _ref3.dragEl;\n      var toSortable = putSortable || this.sortable;\n      var options = this.options;\n      lastSwapEl && toggleClass(lastSwapEl, options.swapClass, false);\n\n      if (lastSwapEl && (options.swap || putSortable && putSortable.options.swap)) {\n        if (dragEl !== lastSwapEl) {\n          toSortable.captureAnimationState();\n          if (toSortable !== activeSortable) activeSortable.captureAnimationState();\n          swapNodes(dragEl, lastSwapEl);\n          toSortable.animateAll();\n          if (toSortable !== activeSortable) activeSortable.animateAll();\n        }\n      }\n    },\n    nulling: function nulling() {\n      lastSwapEl = null;\n    }\n  };\n  return _extends(Swap, {\n    pluginName: 'swap',\n    eventProperties: function eventProperties() {\n      return {\n        swapItem: lastSwapEl\n      };\n    }\n  });\n}\n\nfunction swapNodes(n1, n2) {\n  var p1 = n1.parentNode,\n      p2 = n2.parentNode,\n      i1,\n      i2;\n  if (!p1 || !p2 || p1.isEqualNode(n2) || p2.isEqualNode(n1)) return;\n  i1 = index(n1);\n  i2 = index(n2);\n\n  if (p1.isEqualNode(p2) && i1 < i2) {\n    i2++;\n  }\n\n  p1.insertBefore(n2, p1.children[i1]);\n  p2.insertBefore(n1, p2.children[i2]);\n}\n\nvar multiDragElements = [],\n    multiDragClones = [],\n    lastMultiDragSelect,\n    // for selection with modifier key down (SHIFT)\nmultiDragSortable,\n    initialFolding = false,\n    // Initial multi-drag fold when drag started\nfolding = false,\n    // Folding any other time\ndragStarted = false,\n    dragEl$1,\n    clonesFromRect,\n    clonesHidden;\n\nfunction MultiDragPlugin() {\n  function MultiDrag(sortable) {\n    // Bind all private methods\n    for (var fn in this) {\n      if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {\n        this[fn] = this[fn].bind(this);\n      }\n    }\n\n    if (sortable.options.supportPointer) {\n      on(document, 'pointerup', this._deselectMultiDrag);\n    } else {\n      on(document, 'mouseup', this._deselectMultiDrag);\n      on(document, 'touchend', this._deselectMultiDrag);\n    }\n\n    on(document, 'keydown', this._checkKeyDown);\n    on(document, 'keyup', this._checkKeyUp);\n    this.defaults = {\n      selectedClass: 'sortable-selected',\n      multiDragKey: null,\n      setData: function setData(dataTransfer, dragEl) {\n        var data = '';\n\n        if (multiDragElements.length && multiDragSortable === sortable) {\n          multiDragElements.forEach(function (multiDragElement, i) {\n            data += (!i ? '' : ', ') + multiDragElement.textContent;\n          });\n        } else {\n          data = dragEl.textContent;\n        }\n\n        dataTransfer.setData('Text', data);\n      }\n    };\n  }\n\n  MultiDrag.prototype = {\n    multiDragKeyDown: false,\n    isMultiDrag: false,\n    delayStartGlobal: function delayStartGlobal(_ref) {\n      var dragged = _ref.dragEl;\n      dragEl$1 = dragged;\n    },\n    delayEnded: function delayEnded() {\n      this.isMultiDrag = ~multiDragElements.indexOf(dragEl$1);\n    },\n    setupClone: function setupClone(_ref2) {\n      var sortable = _ref2.sortable,\n          cancel = _ref2.cancel;\n      if (!this.isMultiDrag) return;\n\n      for (var i = 0; i < multiDragElements.length; i++) {\n        multiDragClones.push(clone(multiDragElements[i]));\n        multiDragClones[i].sortableIndex = multiDragElements[i].sortableIndex;\n        multiDragClones[i].draggable = false;\n        multiDragClones[i].style['will-change'] = '';\n        toggleClass(multiDragClones[i], this.options.selectedClass, false);\n        multiDragElements[i] === dragEl$1 && toggleClass(multiDragClones[i], this.options.chosenClass, false);\n      }\n\n      sortable._hideClone();\n\n      cancel();\n    },\n    clone: function clone(_ref3) {\n      var sortable = _ref3.sortable,\n          rootEl = _ref3.rootEl,\n          dispatchSortableEvent = _ref3.dispatchSortableEvent,\n          cancel = _ref3.cancel;\n      if (!this.isMultiDrag) return;\n\n      if (!this.options.removeCloneOnHide) {\n        if (multiDragElements.length && multiDragSortable === sortable) {\n          insertMultiDragClones(true, rootEl);\n          dispatchSortableEvent('clone');\n          cancel();\n        }\n      }\n    },\n    showClone: function showClone(_ref4) {\n      var cloneNowShown = _ref4.cloneNowShown,\n          rootEl = _ref4.rootEl,\n          cancel = _ref4.cancel;\n      if (!this.isMultiDrag) return;\n      insertMultiDragClones(false, rootEl);\n      multiDragClones.forEach(function (clone) {\n        css(clone, 'display', '');\n      });\n      cloneNowShown();\n      clonesHidden = false;\n      cancel();\n    },\n    hideClone: function hideClone(_ref5) {\n      var _this = this;\n\n      var sortable = _ref5.sortable,\n          cloneNowHidden = _ref5.cloneNowHidden,\n          cancel = _ref5.cancel;\n      if (!this.isMultiDrag) return;\n      multiDragClones.forEach(function (clone) {\n        css(clone, 'display', 'none');\n\n        if (_this.options.removeCloneOnHide && clone.parentNode) {\n          clone.parentNode.removeChild(clone);\n        }\n      });\n      cloneNowHidden();\n      clonesHidden = true;\n      cancel();\n    },\n    dragStartGlobal: function dragStartGlobal(_ref6) {\n      var sortable = _ref6.sortable;\n\n      if (!this.isMultiDrag && multiDragSortable) {\n        multiDragSortable.multiDrag._deselectMultiDrag();\n      }\n\n      multiDragElements.forEach(function (multiDragElement) {\n        multiDragElement.sortableIndex = index(multiDragElement);\n      }); // Sort multi-drag elements\n\n      multiDragElements = multiDragElements.sort(function (a, b) {\n        return a.sortableIndex - b.sortableIndex;\n      });\n      dragStarted = true;\n    },\n    dragStarted: function dragStarted(_ref7) {\n      var _this2 = this;\n\n      var sortable = _ref7.sortable;\n      if (!this.isMultiDrag) return;\n\n      if (this.options.sort) {\n        // Capture rects,\n        // hide multi drag elements (by positioning them absolute),\n        // set multi drag elements rects to dragRect,\n        // show multi drag elements,\n        // animate to rects,\n        // unset rects & remove from DOM\n        sortable.captureAnimationState();\n\n        if (this.options.animation) {\n          multiDragElements.forEach(function (multiDragElement) {\n            if (multiDragElement === dragEl$1) return;\n            css(multiDragElement, 'position', 'absolute');\n          });\n          var dragRect = getRect(dragEl$1, false, true, true);\n          multiDragElements.forEach(function (multiDragElement) {\n            if (multiDragElement === dragEl$1) return;\n            setRect(multiDragElement, dragRect);\n          });\n          folding = true;\n          initialFolding = true;\n        }\n      }\n\n      sortable.animateAll(function () {\n        folding = false;\n        initialFolding = false;\n\n        if (_this2.options.animation) {\n          multiDragElements.forEach(function (multiDragElement) {\n            unsetRect(multiDragElement);\n          });\n        } // Remove all auxiliary multidrag items from el, if sorting enabled\n\n\n        if (_this2.options.sort) {\n          removeMultiDragElements();\n        }\n      });\n    },\n    dragOver: function dragOver(_ref8) {\n      var target = _ref8.target,\n          completed = _ref8.completed,\n          cancel = _ref8.cancel;\n\n      if (folding && ~multiDragElements.indexOf(target)) {\n        completed(false);\n        cancel();\n      }\n    },\n    revert: function revert(_ref9) {\n      var fromSortable = _ref9.fromSortable,\n          rootEl = _ref9.rootEl,\n          sortable = _ref9.sortable,\n          dragRect = _ref9.dragRect;\n\n      if (multiDragElements.length > 1) {\n        // Setup unfold animation\n        multiDragElements.forEach(function (multiDragElement) {\n          sortable.addAnimationState({\n            target: multiDragElement,\n            rect: folding ? getRect(multiDragElement) : dragRect\n          });\n          unsetRect(multiDragElement);\n          multiDragElement.fromRect = dragRect;\n          fromSortable.removeAnimationState(multiDragElement);\n        });\n        folding = false;\n        insertMultiDragElements(!this.options.removeCloneOnHide, rootEl);\n      }\n    },\n    dragOverCompleted: function dragOverCompleted(_ref10) {\n      var sortable = _ref10.sortable,\n          isOwner = _ref10.isOwner,\n          insertion = _ref10.insertion,\n          activeSortable = _ref10.activeSortable,\n          parentEl = _ref10.parentEl,\n          putSortable = _ref10.putSortable;\n      var options = this.options;\n\n      if (insertion) {\n        // Clones must be hidden before folding animation to capture dragRectAbsolute properly\n        if (isOwner) {\n          activeSortable._hideClone();\n        }\n\n        initialFolding = false; // If leaving sort:false root, or already folding - Fold to new location\n\n        if (options.animation && multiDragElements.length > 1 && (folding || !isOwner && !activeSortable.options.sort && !putSortable)) {\n          // Fold: Set all multi drag elements's rects to dragEl's rect when multi-drag elements are invisible\n          var dragRectAbsolute = getRect(dragEl$1, false, true, true);\n          multiDragElements.forEach(function (multiDragElement) {\n            if (multiDragElement === dragEl$1) return;\n            setRect(multiDragElement, dragRectAbsolute); // Move element(s) to end of parentEl so that it does not interfere with multi-drag clones insertion if they are inserted\n            // while folding, and so that we can capture them again because old sortable will no longer be fromSortable\n\n            parentEl.appendChild(multiDragElement);\n          });\n          folding = true;\n        } // Clones must be shown (and check to remove multi drags) after folding when interfering multiDragElements are moved out\n\n\n        if (!isOwner) {\n          // Only remove if not folding (folding will remove them anyways)\n          if (!folding) {\n            removeMultiDragElements();\n          }\n\n          if (multiDragElements.length > 1) {\n            var clonesHiddenBefore = clonesHidden;\n\n            activeSortable._showClone(sortable); // Unfold animation for clones if showing from hidden\n\n\n            if (activeSortable.options.animation && !clonesHidden && clonesHiddenBefore) {\n              multiDragClones.forEach(function (clone) {\n                activeSortable.addAnimationState({\n                  target: clone,\n                  rect: clonesFromRect\n                });\n                clone.fromRect = clonesFromRect;\n                clone.thisAnimationDuration = null;\n              });\n            }\n          } else {\n            activeSortable._showClone(sortable);\n          }\n        }\n      }\n    },\n    dragOverAnimationCapture: function dragOverAnimationCapture(_ref11) {\n      var dragRect = _ref11.dragRect,\n          isOwner = _ref11.isOwner,\n          activeSortable = _ref11.activeSortable;\n      multiDragElements.forEach(function (multiDragElement) {\n        multiDragElement.thisAnimationDuration = null;\n      });\n\n      if (activeSortable.options.animation && !isOwner && activeSortable.multiDrag.isMultiDrag) {\n        clonesFromRect = _extends({}, dragRect);\n        var dragMatrix = matrix(dragEl$1, true);\n        clonesFromRect.top -= dragMatrix.f;\n        clonesFromRect.left -= dragMatrix.e;\n      }\n    },\n    dragOverAnimationComplete: function dragOverAnimationComplete() {\n      if (folding) {\n        folding = false;\n        removeMultiDragElements();\n      }\n    },\n    drop: function drop(_ref12) {\n      var evt = _ref12.originalEvent,\n          rootEl = _ref12.rootEl,\n          parentEl = _ref12.parentEl,\n          sortable = _ref12.sortable,\n          dispatchSortableEvent = _ref12.dispatchSortableEvent,\n          oldIndex = _ref12.oldIndex,\n          putSortable = _ref12.putSortable;\n      var toSortable = putSortable || this.sortable;\n      if (!evt) return;\n      var options = this.options,\n          children = parentEl.children; // Multi-drag selection\n\n      if (!dragStarted) {\n        if (options.multiDragKey && !this.multiDragKeyDown) {\n          this._deselectMultiDrag();\n        }\n\n        toggleClass(dragEl$1, options.selectedClass, !~multiDragElements.indexOf(dragEl$1));\n\n        if (!~multiDragElements.indexOf(dragEl$1)) {\n          multiDragElements.push(dragEl$1);\n          dispatchEvent({\n            sortable: sortable,\n            rootEl: rootEl,\n            name: 'select',\n            targetEl: dragEl$1,\n            originalEvt: evt\n          }); // Modifier activated, select from last to dragEl\n\n          if (evt.shiftKey && lastMultiDragSelect && sortable.el.contains(lastMultiDragSelect)) {\n            var lastIndex = index(lastMultiDragSelect),\n                currentIndex = index(dragEl$1);\n\n            if (~lastIndex && ~currentIndex && lastIndex !== currentIndex) {\n              // Must include lastMultiDragSelect (select it), in case modified selection from no selection\n              // (but previous selection existed)\n              var n, i;\n\n              if (currentIndex > lastIndex) {\n                i = lastIndex;\n                n = currentIndex;\n              } else {\n                i = currentIndex;\n                n = lastIndex + 1;\n              }\n\n              for (; i < n; i++) {\n                if (~multiDragElements.indexOf(children[i])) continue;\n                toggleClass(children[i], options.selectedClass, true);\n                multiDragElements.push(children[i]);\n                dispatchEvent({\n                  sortable: sortable,\n                  rootEl: rootEl,\n                  name: 'select',\n                  targetEl: children[i],\n                  originalEvt: evt\n                });\n              }\n            }\n          } else {\n            lastMultiDragSelect = dragEl$1;\n          }\n\n          multiDragSortable = toSortable;\n        } else {\n          multiDragElements.splice(multiDragElements.indexOf(dragEl$1), 1);\n          lastMultiDragSelect = null;\n          dispatchEvent({\n            sortable: sortable,\n            rootEl: rootEl,\n            name: 'deselect',\n            targetEl: dragEl$1,\n            originalEvt: evt\n          });\n        }\n      } // Multi-drag drop\n\n\n      if (dragStarted && this.isMultiDrag) {\n        // Do not \"unfold\" after around dragEl if reverted\n        if ((parentEl[expando].options.sort || parentEl !== rootEl) && multiDragElements.length > 1) {\n          var dragRect = getRect(dragEl$1),\n              multiDragIndex = index(dragEl$1, ':not(.' + this.options.selectedClass + ')');\n          if (!initialFolding && options.animation) dragEl$1.thisAnimationDuration = null;\n          toSortable.captureAnimationState();\n\n          if (!initialFolding) {\n            if (options.animation) {\n              dragEl$1.fromRect = dragRect;\n              multiDragElements.forEach(function (multiDragElement) {\n                multiDragElement.thisAnimationDuration = null;\n\n                if (multiDragElement !== dragEl$1) {\n                  var rect = folding ? getRect(multiDragElement) : dragRect;\n                  multiDragElement.fromRect = rect; // Prepare unfold animation\n\n                  toSortable.addAnimationState({\n                    target: multiDragElement,\n                    rect: rect\n                  });\n                }\n              });\n            } // Multi drag elements are not necessarily removed from the DOM on drop, so to reinsert\n            // properly they must all be removed\n\n\n            removeMultiDragElements();\n            multiDragElements.forEach(function (multiDragElement) {\n              if (children[multiDragIndex]) {\n                parentEl.insertBefore(multiDragElement, children[multiDragIndex]);\n              } else {\n                parentEl.appendChild(multiDragElement);\n              }\n\n              multiDragIndex++;\n            }); // If initial folding is done, the elements may have changed position because they are now\n            // unfolding around dragEl, even though dragEl may not have his index changed, so update event\n            // must be fired here as Sortable will not.\n\n            if (oldIndex === index(dragEl$1)) {\n              var update = false;\n              multiDragElements.forEach(function (multiDragElement) {\n                if (multiDragElement.sortableIndex !== index(multiDragElement)) {\n                  update = true;\n                  return;\n                }\n              });\n\n              if (update) {\n                dispatchSortableEvent('update');\n              }\n            }\n          } // Must be done after capturing individual rects (scroll bar)\n\n\n          multiDragElements.forEach(function (multiDragElement) {\n            unsetRect(multiDragElement);\n          });\n          toSortable.animateAll();\n        }\n\n        multiDragSortable = toSortable;\n      } // Remove clones if necessary\n\n\n      if (rootEl === parentEl || putSortable && putSortable.lastPutMode !== 'clone') {\n        multiDragClones.forEach(function (clone) {\n          clone.parentNode && clone.parentNode.removeChild(clone);\n        });\n      }\n    },\n    nullingGlobal: function nullingGlobal() {\n      this.isMultiDrag = dragStarted = false;\n      multiDragClones.length = 0;\n    },\n    destroyGlobal: function destroyGlobal() {\n      this._deselectMultiDrag();\n\n      off(document, 'pointerup', this._deselectMultiDrag);\n      off(document, 'mouseup', this._deselectMultiDrag);\n      off(document, 'touchend', this._deselectMultiDrag);\n      off(document, 'keydown', this._checkKeyDown);\n      off(document, 'keyup', this._checkKeyUp);\n    },\n    _deselectMultiDrag: function _deselectMultiDrag(evt) {\n      if (typeof dragStarted !== \"undefined\" && dragStarted) return; // Only deselect if selection is in this sortable\n\n      if (multiDragSortable !== this.sortable) return; // Only deselect if target is not item in this sortable\n\n      if (evt && closest(evt.target, this.options.draggable, this.sortable.el, false)) return; // Only deselect if left click\n\n      if (evt && evt.button !== 0) return;\n\n      while (multiDragElements.length) {\n        var el = multiDragElements[0];\n        toggleClass(el, this.options.selectedClass, false);\n        multiDragElements.shift();\n        dispatchEvent({\n          sortable: this.sortable,\n          rootEl: this.sortable.el,\n          name: 'deselect',\n          targetEl: el,\n          originalEvt: evt\n        });\n      }\n    },\n    _checkKeyDown: function _checkKeyDown(evt) {\n      if (evt.key === this.options.multiDragKey) {\n        this.multiDragKeyDown = true;\n      }\n    },\n    _checkKeyUp: function _checkKeyUp(evt) {\n      if (evt.key === this.options.multiDragKey) {\n        this.multiDragKeyDown = false;\n      }\n    }\n  };\n  return _extends(MultiDrag, {\n    // Static methods & properties\n    pluginName: 'multiDrag',\n    utils: {\n      /**\r\n       * Selects the provided multi-drag item\r\n       * @param  {HTMLElement} el    The element to be selected\r\n       */\n      select: function select(el) {\n        var sortable = el.parentNode[expando];\n        if (!sortable || !sortable.options.multiDrag || ~multiDragElements.indexOf(el)) return;\n\n        if (multiDragSortable && multiDragSortable !== sortable) {\n          multiDragSortable.multiDrag._deselectMultiDrag();\n\n          multiDragSortable = sortable;\n        }\n\n        toggleClass(el, sortable.options.selectedClass, true);\n        multiDragElements.push(el);\n      },\n\n      /**\r\n       * Deselects the provided multi-drag item\r\n       * @param  {HTMLElement} el    The element to be deselected\r\n       */\n      deselect: function deselect(el) {\n        var sortable = el.parentNode[expando],\n            index = multiDragElements.indexOf(el);\n        if (!sortable || !sortable.options.multiDrag || !~index) return;\n        toggleClass(el, sortable.options.selectedClass, false);\n        multiDragElements.splice(index, 1);\n      }\n    },\n    eventProperties: function eventProperties() {\n      var _this3 = this;\n\n      var oldIndicies = [],\n          newIndicies = [];\n      multiDragElements.forEach(function (multiDragElement) {\n        oldIndicies.push({\n          multiDragElement: multiDragElement,\n          index: multiDragElement.sortableIndex\n        }); // multiDragElements will already be sorted if folding\n\n        var newIndex;\n\n        if (folding && multiDragElement !== dragEl$1) {\n          newIndex = -1;\n        } else if (folding) {\n          newIndex = index(multiDragElement, ':not(.' + _this3.options.selectedClass + ')');\n        } else {\n          newIndex = index(multiDragElement);\n        }\n\n        newIndicies.push({\n          multiDragElement: multiDragElement,\n          index: newIndex\n        });\n      });\n      return {\n        items: _toConsumableArray(multiDragElements),\n        clones: [].concat(multiDragClones),\n        oldIndicies: oldIndicies,\n        newIndicies: newIndicies\n      };\n    },\n    optionListeners: {\n      multiDragKey: function multiDragKey(key) {\n        key = key.toLowerCase();\n\n        if (key === 'ctrl') {\n          key = 'Control';\n        } else if (key.length > 1) {\n          key = key.charAt(0).toUpperCase() + key.substr(1);\n        }\n\n        return key;\n      }\n    }\n  });\n}\n\nfunction insertMultiDragElements(clonesInserted, rootEl) {\n  multiDragElements.forEach(function (multiDragElement, i) {\n    var target = rootEl.children[multiDragElement.sortableIndex + (clonesInserted ? Number(i) : 0)];\n\n    if (target) {\n      rootEl.insertBefore(multiDragElement, target);\n    } else {\n      rootEl.appendChild(multiDragElement);\n    }\n  });\n}\n/**\r\n * Insert multi-drag clones\r\n * @param  {[Boolean]} elementsInserted  Whether the multi-drag elements are inserted\r\n * @param  {HTMLElement} rootEl\r\n */\n\n\nfunction insertMultiDragClones(elementsInserted, rootEl) {\n  multiDragClones.forEach(function (clone, i) {\n    var target = rootEl.children[clone.sortableIndex + (elementsInserted ? Number(i) : 0)];\n\n    if (target) {\n      rootEl.insertBefore(clone, target);\n    } else {\n      rootEl.appendChild(clone);\n    }\n  });\n}\n\nfunction removeMultiDragElements() {\n  multiDragElements.forEach(function (multiDragElement) {\n    if (multiDragElement === dragEl$1) return;\n    multiDragElement.parentNode && multiDragElement.parentNode.removeChild(multiDragElement);\n  });\n}\n\nSortable.mount(new AutoScrollPlugin());\nSortable.mount(Remove, Revert);\n\nexport default Sortable;\nexport { MultiDragPlugin as MultiDrag, Sortable, SwapPlugin as Swap };\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/sortablejs/modular/sortable.esm.js\n// module id = /dO2\n// module chunks = 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return decodeURIComponent(str)\n } catch (err) {\n if (false) {\n warn(false, (\"Error decoding \\\"\" + str + \"\\\". Leaving it intact.\"));\n }\n }\n return str\n}\n\nfunction resolveQuery (\n query,\n extraQuery,\n _parseQuery\n) {\n if ( extraQuery === void 0 ) extraQuery = {};\n\n var parse = _parseQuery || parseQuery;\n var parsedQuery;\n try {\n parsedQuery = parse(query || '');\n } catch (e) {\n \"production\" !== 'production' && warn(false, e.message);\n parsedQuery = {};\n }\n for (var key in extraQuery) {\n var value = extraQuery[key];\n parsedQuery[key] = Array.isArray(value)\n ? value.map(castQueryParamValue)\n : castQueryParamValue(value);\n }\n return parsedQuery\n}\n\nvar castQueryParamValue = function (value) { return (value == null || typeof value === 'object' ? value : String(value)); };\n\nfunction parseQuery (query) {\n var res = {};\n\n query = query.trim().replace(/^(\\?|#|&)/, '');\n\n if (!query) {\n return res\n }\n\n query.split('&').forEach(function (param) {\n var parts = param.replace(/\\+/g, ' ').split('=');\n var key = decode(parts.shift());\n var val = parts.length > 0 ? decode(parts.join('=')) : null;\n\n if (res[key] === undefined) {\n res[key] = val;\n } else if (Array.isArray(res[key])) {\n res[key].push(val);\n } else {\n res[key] = [res[key], val];\n }\n });\n\n return res\n}\n\nfunction stringifyQuery (obj) {\n var res = obj\n ? Object.keys(obj)\n .map(function (key) {\n var val = obj[key];\n\n if (val === undefined) {\n return ''\n }\n\n if (val === null) {\n return encode(key)\n }\n\n if (Array.isArray(val)) {\n var result = [];\n val.forEach(function (val2) {\n if (val2 === undefined) {\n return\n }\n if (val2 === null) {\n result.push(encode(key));\n } else {\n result.push(encode(key) + '=' + encode(val2));\n }\n });\n return result.join('&')\n }\n\n return encode(key) + '=' + encode(val)\n })\n .filter(function (x) { return x.length > 0; })\n .join('&')\n : null;\n return res ? (\"?\" + res) : ''\n}\n\n/* */\n\nvar trailingSlashRE = /\\/?$/;\n\nfunction createRoute (\n record,\n location,\n redirectedFrom,\n router\n) {\n var stringifyQuery = router && router.options.stringifyQuery;\n\n var query = location.query || {};\n try {\n query = clone(query);\n } catch (e) {}\n\n var route = {\n name: location.name || (record && record.name),\n meta: (record && record.meta) || {},\n path: location.path || '/',\n hash: location.hash || '',\n query: query,\n params: location.params || {},\n fullPath: getFullPath(location, stringifyQuery),\n matched: record ? formatMatch(record) : []\n };\n if (redirectedFrom) {\n route.redirectedFrom = getFullPath(redirectedFrom, stringifyQuery);\n }\n return Object.freeze(route)\n}\n\nfunction clone (value) {\n if (Array.isArray(value)) {\n return value.map(clone)\n } else if (value && typeof value === 'object') {\n var res = {};\n for (var key in value) {\n res[key] = clone(value[key]);\n }\n return res\n } else {\n return value\n }\n}\n\n// the starting route that represents the initial state\nvar START = createRoute(null, {\n path: '/'\n});\n\nfunction formatMatch (record) {\n var res = [];\n while (record) {\n res.unshift(record);\n record = record.parent;\n }\n return res\n}\n\nfunction getFullPath (\n ref,\n _stringifyQuery\n) {\n var path = ref.path;\n var query = ref.query; if ( query === void 0 ) query = {};\n var hash = ref.hash; if ( hash === void 0 ) hash = '';\n\n var stringify = _stringifyQuery || stringifyQuery;\n return (path || '/') + stringify(query) + hash\n}\n\nfunction isSameRoute (a, b, onlyPath) {\n if (b === START) {\n return a === b\n } else if (!b) {\n return false\n } else if (a.path && b.path) {\n return a.path.replace(trailingSlashRE, '') === b.path.replace(trailingSlashRE, '') && (onlyPath ||\n a.hash === b.hash &&\n isObjectEqual(a.query, b.query))\n } else if (a.name && b.name) {\n return (\n a.name === b.name &&\n (onlyPath || (\n a.hash === b.hash &&\n isObjectEqual(a.query, b.query) &&\n isObjectEqual(a.params, b.params))\n )\n )\n } else {\n return false\n }\n}\n\nfunction isObjectEqual (a, b) {\n if ( a === void 0 ) a = {};\n if ( b === void 0 ) b = {};\n\n // handle null value #1566\n if (!a || !b) { return a === b }\n var aKeys = Object.keys(a).sort();\n var bKeys = Object.keys(b).sort();\n if (aKeys.length !== bKeys.length) {\n return false\n }\n return aKeys.every(function (key, i) {\n var aVal = a[key];\n var bKey = bKeys[i];\n if (bKey !== key) { return false }\n var bVal = b[key];\n // query values can be null and undefined\n if (aVal == null || bVal == null) { return aVal === bVal }\n // check nested equality\n if (typeof aVal === 'object' && typeof bVal === 'object') {\n return isObjectEqual(aVal, bVal)\n }\n return String(aVal) === String(bVal)\n })\n}\n\nfunction isIncludedRoute (current, target) {\n return (\n current.path.replace(trailingSlashRE, '/').indexOf(\n target.path.replace(trailingSlashRE, '/')\n ) === 0 &&\n (!target.hash || current.hash === target.hash) &&\n queryIncludes(current.query, target.query)\n )\n}\n\nfunction queryIncludes (current, target) {\n for (var key in target) {\n if (!(key in current)) {\n return false\n }\n }\n return true\n}\n\nfunction handleRouteEntered (route) {\n for (var i = 0; i < route.matched.length; i++) {\n var record = route.matched[i];\n for (var name in record.instances) {\n var instance = record.instances[name];\n var cbs = record.enteredCbs[name];\n if (!instance || !cbs) { continue }\n delete record.enteredCbs[name];\n for (var i$1 = 0; i$1 < cbs.length; i$1++) {\n if (!instance._isBeingDestroyed) { cbs[i$1](instance); }\n }\n }\n }\n}\n\nvar View = {\n name: 'RouterView',\n functional: true,\n props: {\n name: {\n type: String,\n default: 'default'\n }\n },\n render: function render (_, ref) {\n var props = ref.props;\n var children = ref.children;\n var parent = ref.parent;\n var data = ref.data;\n\n // used by devtools to display a router-view badge\n data.routerView = true;\n\n // directly use parent context's createElement() function\n // so that components rendered by router-view can resolve named slots\n var h = parent.$createElement;\n var name = props.name;\n var route = parent.$route;\n var cache = parent._routerViewCache || (parent._routerViewCache = {});\n\n // determine current view depth, also check to see if the tree\n // has been toggled inactive but kept-alive.\n var depth = 0;\n var inactive = false;\n while (parent && parent._routerRoot !== parent) {\n var vnodeData = parent.$vnode ? parent.$vnode.data : {};\n if (vnodeData.routerView) {\n depth++;\n }\n if (vnodeData.keepAlive && parent._directInactive && parent._inactive) {\n inactive = true;\n }\n parent = parent.$parent;\n }\n data.routerViewDepth = depth;\n\n // render previous view if the tree is inactive and kept-alive\n if (inactive) {\n var cachedData = cache[name];\n var cachedComponent = cachedData && cachedData.component;\n if (cachedComponent) {\n // #2301\n // pass props\n if (cachedData.configProps) {\n fillPropsinData(cachedComponent, data, cachedData.route, cachedData.configProps);\n }\n return h(cachedComponent, data, children)\n } else {\n // render previous empty view\n return h()\n }\n }\n\n var matched = route.matched[depth];\n var component = matched && matched.components[name];\n\n // render empty node if no matched route or no config component\n if (!matched || !component) {\n cache[name] = null;\n return h()\n }\n\n // cache component\n cache[name] = { component: component };\n\n // attach instance registration hook\n // this will be called in the instance's injected lifecycle hooks\n data.registerRouteInstance = function (vm, val) {\n // val could be undefined for unregistration\n var current = matched.instances[name];\n if (\n (val && current !== vm) ||\n (!val && current === vm)\n ) {\n matched.instances[name] = val;\n }\n }\n\n // also register instance in prepatch hook\n // in case the same component instance is reused across different routes\n ;(data.hook || (data.hook = {})).prepatch = function (_, vnode) {\n matched.instances[name] = vnode.componentInstance;\n };\n\n // register instance in init hook\n // in case kept-alive component be actived when routes changed\n data.hook.init = function (vnode) {\n if (vnode.data.keepAlive &&\n vnode.componentInstance &&\n vnode.componentInstance !== matched.instances[name]\n ) {\n matched.instances[name] = vnode.componentInstance;\n }\n\n // if the route transition has already been confirmed then we weren't\n // able to call the cbs during confirmation as the component was not\n // registered yet, so we call it here.\n handleRouteEntered(route);\n };\n\n var configProps = matched.props && matched.props[name];\n // save route and configProps in cache\n if (configProps) {\n extend(cache[name], {\n route: route,\n configProps: configProps\n });\n fillPropsinData(component, data, route, configProps);\n }\n\n return h(component, data, children)\n }\n};\n\nfunction fillPropsinData (component, data, route, configProps) {\n // resolve props\n var propsToPass = data.props = resolveProps(route, configProps);\n if (propsToPass) {\n // clone to prevent mutation\n propsToPass = data.props = extend({}, propsToPass);\n // pass non-declared props as attrs\n var attrs = data.attrs = data.attrs || {};\n for (var key in propsToPass) {\n if (!component.props || !(key in component.props)) {\n attrs[key] = propsToPass[key];\n delete propsToPass[key];\n }\n }\n }\n}\n\nfunction resolveProps (route, config) {\n switch (typeof config) {\n case 'undefined':\n return\n case 'object':\n return config\n case 'function':\n return config(route)\n case 'boolean':\n return config ? route.params : undefined\n default:\n if (false) {\n warn(\n false,\n \"props in \\\"\" + (route.path) + \"\\\" is a \" + (typeof config) + \", \" +\n \"expecting an object, function or boolean.\"\n );\n }\n }\n}\n\n/* */\n\nfunction resolvePath (\n relative,\n base,\n append\n) {\n var firstChar = relative.charAt(0);\n if (firstChar === '/') {\n return relative\n }\n\n if (firstChar === '?' || firstChar === '#') {\n return base + relative\n }\n\n var stack = base.split('/');\n\n // remove trailing segment if:\n // - not appending\n // - appending to trailing slash (last segment is empty)\n if (!append || !stack[stack.length - 1]) {\n stack.pop();\n }\n\n // resolve relative path\n var segments = relative.replace(/^\\//, '').split('/');\n for (var i = 0; i < segments.length; i++) {\n var segment = segments[i];\n if (segment === '..') {\n stack.pop();\n } else if (segment !== '.') {\n stack.push(segment);\n }\n }\n\n // ensure leading slash\n if (stack[0] !== '') {\n stack.unshift('');\n }\n\n return stack.join('/')\n}\n\nfunction parsePath (path) {\n var hash = '';\n var query = '';\n\n var hashIndex = path.indexOf('#');\n if (hashIndex >= 0) {\n hash = path.slice(hashIndex);\n path = path.slice(0, hashIndex);\n }\n\n var queryIndex = path.indexOf('?');\n if (queryIndex >= 0) {\n query = path.slice(queryIndex + 1);\n path = path.slice(0, queryIndex);\n }\n\n return {\n path: path,\n query: query,\n hash: hash\n }\n}\n\nfunction cleanPath (path) {\n return path.replace(/\\/\\//g, '/')\n}\n\nvar isarray = Array.isArray || function (arr) {\n return Object.prototype.toString.call(arr) == '[object Array]';\n};\n\n/**\n * Expose `pathToRegexp`.\n */\nvar pathToRegexp_1 = pathToRegexp;\nvar parse_1 = parse;\nvar compile_1 = compile;\nvar tokensToFunction_1 = tokensToFunction;\nvar tokensToRegExp_1 = tokensToRegExp;\n\n/**\n * The main path matching regexp utility.\n *\n * @type {RegExp}\n */\nvar PATH_REGEXP = new RegExp([\n // Match escaped characters that would otherwise appear in future matches.\n // This allows the user to escape special characters that won't transform.\n '(\\\\\\\\.)',\n // Match Express-style parameters and un-named parameters with a prefix\n // and optional suffixes. Matches appear as:\n //\n // \"/:test(\\\\d+)?\" => [\"/\", \"test\", \"\\d+\", undefined, \"?\", undefined]\n // \"/route(\\\\d+)\" => [undefined, undefined, undefined, \"\\d+\", undefined, undefined]\n // \"/*\" => [\"/\", undefined, undefined, undefined, undefined, \"*\"]\n '([\\\\/.])?(?:(?:\\\\:(\\\\w+)(?:\\\\(((?:\\\\\\\\.|[^\\\\\\\\()])+)\\\\))?|\\\\(((?:\\\\\\\\.|[^\\\\\\\\()])+)\\\\))([+*?])?|(\\\\*))'\n].join('|'), 'g');\n\n/**\n * Parse a string for the raw tokens.\n *\n * @param {string} str\n * @param {Object=} options\n * @return {!Array}\n */\nfunction parse (str, options) {\n var tokens = [];\n var key = 0;\n var index = 0;\n var path = '';\n var defaultDelimiter = options && options.delimiter || '/';\n var res;\n\n while ((res = PATH_REGEXP.exec(str)) != null) {\n var m = res[0];\n var escaped = res[1];\n var offset = res.index;\n path += str.slice(index, offset);\n index = offset + m.length;\n\n // Ignore already escaped sequences.\n if (escaped) {\n path += escaped[1];\n continue\n }\n\n var next = str[index];\n var prefix = res[2];\n var name = res[3];\n var capture = res[4];\n var group = res[5];\n var modifier = res[6];\n var asterisk = res[7];\n\n // Push the current path onto the tokens.\n if (path) {\n tokens.push(path);\n path = '';\n }\n\n var partial = prefix != null && next != null && next !== prefix;\n var repeat = modifier === '+' || modifier === '*';\n var optional = modifier === '?' || modifier === '*';\n var delimiter = res[2] || defaultDelimiter;\n var pattern = capture || group;\n\n tokens.push({\n name: name || key++,\n prefix: prefix || '',\n delimiter: delimiter,\n optional: optional,\n repeat: repeat,\n partial: partial,\n asterisk: !!asterisk,\n pattern: pattern ? escapeGroup(pattern) : (asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?')\n });\n }\n\n // Match any characters still remaining.\n if (index < str.length) {\n path += str.substr(index);\n }\n\n // If the path exists, push it onto the end.\n if (path) {\n tokens.push(path);\n }\n\n return tokens\n}\n\n/**\n * Compile a string to a template function for the path.\n *\n * @param {string} str\n * @param {Object=} options\n * @return {!function(Object=, Object=)}\n */\nfunction compile (str, options) {\n return tokensToFunction(parse(str, options), options)\n}\n\n/**\n * Prettier encoding of URI path segments.\n *\n * @param {string}\n * @return {string}\n */\nfunction encodeURIComponentPretty (str) {\n return encodeURI(str).replace(/[\\/?#]/g, function (c) {\n return '%' + c.charCodeAt(0).toString(16).toUpperCase()\n })\n}\n\n/**\n * Encode the asterisk parameter. Similar to `pretty`, but allows slashes.\n *\n * @param {string}\n * @return {string}\n */\nfunction encodeAsterisk (str) {\n return encodeURI(str).replace(/[?#]/g, function (c) {\n return '%' + c.charCodeAt(0).toString(16).toUpperCase()\n })\n}\n\n/**\n * Expose a method for transforming tokens into the path function.\n */\nfunction tokensToFunction (tokens, options) {\n // Compile all the tokens into regexps.\n var matches = new Array(tokens.length);\n\n // Compile all the patterns before compilation.\n for (var i = 0; i < tokens.length; i++) {\n if (typeof tokens[i] === 'object') {\n matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$', flags(options));\n }\n }\n\n return function (obj, opts) {\n var path = '';\n var data = obj || {};\n var options = opts || {};\n var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent;\n\n for (var i = 0; i < tokens.length; i++) {\n var token = tokens[i];\n\n if (typeof token === 'string') {\n path += token;\n\n continue\n }\n\n var value = data[token.name];\n var segment;\n\n if (value == null) {\n if (token.optional) {\n // Prepend partial segment prefixes.\n if (token.partial) {\n path += token.prefix;\n }\n\n continue\n } else {\n throw new TypeError('Expected \"' + token.name + '\" to be defined')\n }\n }\n\n if (isarray(value)) {\n if (!token.repeat) {\n throw new TypeError('Expected \"' + token.name + '\" to not repeat, but received `' + JSON.stringify(value) + '`')\n }\n\n if (value.length === 0) {\n if (token.optional) {\n continue\n } else {\n throw new TypeError('Expected \"' + token.name + '\" to not be empty')\n }\n }\n\n for (var j = 0; j < value.length; j++) {\n segment = encode(value[j]);\n\n if (!matches[i].test(segment)) {\n throw new TypeError('Expected all \"' + token.name + '\" to match \"' + token.pattern + '\", but received `' + JSON.stringify(segment) + '`')\n }\n\n path += (j === 0 ? token.prefix : token.delimiter) + segment;\n }\n\n continue\n }\n\n segment = token.asterisk ? encodeAsterisk(value) : encode(value);\n\n if (!matches[i].test(segment)) {\n throw new TypeError('Expected \"' + token.name + '\" to match \"' + token.pattern + '\", but received \"' + segment + '\"')\n }\n\n path += token.prefix + segment;\n }\n\n return path\n }\n}\n\n/**\n * Escape a regular expression string.\n *\n * @param {string} str\n * @return {string}\n */\nfunction escapeString (str) {\n return str.replace(/([.+*?=^!:${}()[\\]|\\/\\\\])/g, '\\\\$1')\n}\n\n/**\n * Escape the capturing group by escaping special characters and meaning.\n *\n * @param {string} group\n * @return {string}\n */\nfunction escapeGroup (group) {\n return group.replace(/([=!:$\\/()])/g, '\\\\$1')\n}\n\n/**\n * Attach the keys as a property of the regexp.\n *\n * @param {!RegExp} re\n * @param {Array} keys\n * @return {!RegExp}\n */\nfunction attachKeys (re, keys) {\n re.keys = keys;\n return re\n}\n\n/**\n * Get the flags for a regexp from the options.\n *\n * @param {Object} options\n * @return {string}\n */\nfunction flags (options) {\n return options && options.sensitive ? '' : 'i'\n}\n\n/**\n * Pull out keys from a regexp.\n *\n * @param {!RegExp} path\n * @param {!Array} keys\n * @return {!RegExp}\n */\nfunction regexpToRegexp (path, keys) {\n // Use a negative lookahead to match only capturing groups.\n var groups = path.source.match(/\\((?!\\?)/g);\n\n if (groups) {\n for (var i = 0; i < groups.length; i++) {\n keys.push({\n name: i,\n prefix: null,\n delimiter: null,\n optional: false,\n repeat: false,\n partial: false,\n asterisk: false,\n pattern: null\n });\n }\n }\n\n return attachKeys(path, keys)\n}\n\n/**\n * Transform an array into a regexp.\n *\n * @param {!Array} path\n * @param {Array} keys\n * @param {!Object} options\n * @return {!RegExp}\n */\nfunction arrayToRegexp (path, keys, options) {\n var parts = [];\n\n for (var i = 0; i < path.length; i++) {\n parts.push(pathToRegexp(path[i], keys, options).source);\n }\n\n var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options));\n\n return attachKeys(regexp, keys)\n}\n\n/**\n * Create a path regexp from string input.\n *\n * @param {string} path\n * @param {!Array} keys\n * @param {!Object} options\n * @return {!RegExp}\n */\nfunction stringToRegexp (path, keys, options) {\n return tokensToRegExp(parse(path, options), keys, options)\n}\n\n/**\n * Expose a function for taking tokens and returning a RegExp.\n *\n * @param {!Array} tokens\n * @param {(Array|Object)=} keys\n * @param {Object=} options\n * @return {!RegExp}\n */\nfunction tokensToRegExp (tokens, keys, options) {\n if (!isarray(keys)) {\n options = /** @type {!Object} */ (keys || options);\n keys = [];\n }\n\n options = options || {};\n\n var strict = options.strict;\n var end = options.end !== false;\n var route = '';\n\n // Iterate over the tokens and create our regexp string.\n for (var i = 0; i < tokens.length; i++) {\n var token = tokens[i];\n\n if (typeof token === 'string') {\n route += escapeString(token);\n } else {\n var prefix = escapeString(token.prefix);\n var capture = '(?:' + token.pattern + ')';\n\n keys.push(token);\n\n if (token.repeat) {\n capture += '(?:' + prefix + capture + ')*';\n }\n\n if (token.optional) {\n if (!token.partial) {\n capture = '(?:' + prefix + '(' + capture + '))?';\n } else {\n capture = prefix + '(' + capture + ')?';\n }\n } else {\n capture = prefix + '(' + capture + ')';\n }\n\n route += capture;\n }\n }\n\n var delimiter = escapeString(options.delimiter || '/');\n var endsWithDelimiter = route.slice(-delimiter.length) === delimiter;\n\n // In non-strict mode we allow a slash at the end of match. If the path to\n // match already ends with a slash, we remove it for consistency. The slash\n // is valid at the end of a path match, not in the middle. This is important\n // in non-ending mode, where \"/test/\" shouldn't match \"/test//route\".\n if (!strict) {\n route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?';\n }\n\n if (end) {\n route += '$';\n } else {\n // In non-ending mode, we need the capturing groups to match as much as\n // possible by using a positive lookahead to the end or next path segment.\n route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)';\n }\n\n return attachKeys(new RegExp('^' + route, flags(options)), keys)\n}\n\n/**\n * Normalize the given path string, returning a regular expression.\n *\n * An empty array can be passed in for the keys, which will hold the\n * placeholder key descriptions. For example, using `/user/:id`, `keys` will\n * contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.\n *\n * @param {(string|RegExp|Array)} path\n * @param {(Array|Object)=} keys\n * @param {Object=} options\n * @return {!RegExp}\n */\nfunction pathToRegexp (path, keys, options) {\n if (!isarray(keys)) {\n options = /** @type {!Object} */ (keys || options);\n keys = [];\n }\n\n options = options || {};\n\n if (path instanceof RegExp) {\n return regexpToRegexp(path, /** @type {!Array} */ (keys))\n }\n\n if (isarray(path)) {\n return arrayToRegexp(/** @type {!Array} */ (path), /** @type {!Array} */ (keys), options)\n }\n\n return stringToRegexp(/** @type {string} */ (path), /** @type {!Array} */ (keys), options)\n}\npathToRegexp_1.parse = parse_1;\npathToRegexp_1.compile = compile_1;\npathToRegexp_1.tokensToFunction = tokensToFunction_1;\npathToRegexp_1.tokensToRegExp = tokensToRegExp_1;\n\n/* */\n\n// $flow-disable-line\nvar regexpCompileCache = Object.create(null);\n\nfunction fillParams (\n path,\n params,\n routeMsg\n) {\n params = params || {};\n try {\n var filler =\n regexpCompileCache[path] ||\n (regexpCompileCache[path] = pathToRegexp_1.compile(path));\n\n // Fix #2505 resolving asterisk routes { name: 'not-found', params: { pathMatch: '/not-found' }}\n // and fix #3106 so that you can work with location descriptor object having params.pathMatch equal to empty string\n if (typeof params.pathMatch === 'string') { params[0] = params.pathMatch; }\n\n return filler(params, { pretty: true })\n } catch (e) {\n if (false) {\n // Fix #3072 no warn if `pathMatch` is string\n warn(typeof params.pathMatch === 'string', (\"missing param for \" + routeMsg + \": \" + (e.message)));\n }\n return ''\n } finally {\n // delete the 0 if it was added\n delete params[0];\n }\n}\n\n/* */\n\nfunction normalizeLocation (\n raw,\n current,\n append,\n router\n) {\n var next = typeof raw === 'string' ? { path: raw } : raw;\n // named target\n if (next._normalized) {\n return next\n } else if (next.name) {\n next = extend({}, raw);\n var params = next.params;\n if (params && typeof params === 'object') {\n next.params = extend({}, params);\n }\n return next\n }\n\n // relative params\n if (!next.path && next.params && current) {\n next = extend({}, next);\n next._normalized = true;\n var params$1 = extend(extend({}, current.params), next.params);\n if (current.name) {\n next.name = current.name;\n next.params = params$1;\n } else if (current.matched.length) {\n var rawPath = current.matched[current.matched.length - 1].path;\n next.path = fillParams(rawPath, params$1, (\"path \" + (current.path)));\n } else if (false) {\n warn(false, \"relative params navigation requires a current route.\");\n }\n return next\n }\n\n var parsedPath = parsePath(next.path || '');\n var basePath = (current && current.path) || '/';\n var path = parsedPath.path\n ? resolvePath(parsedPath.path, basePath, append || next.append)\n : basePath;\n\n var query = resolveQuery(\n parsedPath.query,\n next.query,\n router && router.options.parseQuery\n );\n\n var hash = next.hash || parsedPath.hash;\n if (hash && hash.charAt(0) !== '#') {\n hash = \"#\" + hash;\n }\n\n return {\n _normalized: true,\n path: path,\n query: query,\n hash: hash\n }\n}\n\n/* */\n\n// work around weird flow bug\nvar toTypes = [String, Object];\nvar eventTypes = [String, Array];\n\nvar noop = function () {};\n\nvar warnedCustomSlot;\nvar warnedTagProp;\nvar warnedEventProp;\n\nvar Link = {\n name: 'RouterLink',\n props: {\n to: {\n type: toTypes,\n required: true\n },\n tag: {\n type: String,\n default: 'a'\n },\n custom: Boolean,\n exact: Boolean,\n exactPath: Boolean,\n append: Boolean,\n replace: Boolean,\n activeClass: String,\n exactActiveClass: String,\n ariaCurrentValue: {\n type: String,\n default: 'page'\n },\n event: {\n type: eventTypes,\n default: 'click'\n }\n },\n render: function render (h) {\n var this$1 = this;\n\n var router = this.$router;\n var current = this.$route;\n var ref = router.resolve(\n this.to,\n current,\n this.append\n );\n var location = ref.location;\n var route = ref.route;\n var href = ref.href;\n\n var classes = {};\n var globalActiveClass = router.options.linkActiveClass;\n var globalExactActiveClass = router.options.linkExactActiveClass;\n // Support global empty active class\n var activeClassFallback =\n globalActiveClass == null ? 'router-link-active' : globalActiveClass;\n var exactActiveClassFallback =\n globalExactActiveClass == null\n ? 'router-link-exact-active'\n : globalExactActiveClass;\n var activeClass =\n this.activeClass == null ? activeClassFallback : this.activeClass;\n var exactActiveClass =\n this.exactActiveClass == null\n ? exactActiveClassFallback\n : this.exactActiveClass;\n\n var compareTarget = route.redirectedFrom\n ? createRoute(null, normalizeLocation(route.redirectedFrom), null, router)\n : route;\n\n classes[exactActiveClass] = isSameRoute(current, compareTarget, this.exactPath);\n classes[activeClass] = this.exact || this.exactPath\n ? classes[exactActiveClass]\n : isIncludedRoute(current, compareTarget);\n\n var ariaCurrentValue = classes[exactActiveClass] ? this.ariaCurrentValue : null;\n\n var handler = function (e) {\n if (guardEvent(e)) {\n if (this$1.replace) {\n router.replace(location, noop);\n } else {\n router.push(location, noop);\n }\n }\n };\n\n var on = { click: guardEvent };\n if (Array.isArray(this.event)) {\n this.event.forEach(function (e) {\n on[e] = handler;\n });\n } else {\n on[this.event] = handler;\n }\n\n var data = { class: classes };\n\n var scopedSlot =\n !this.$scopedSlots.$hasNormal &&\n this.$scopedSlots.default &&\n this.$scopedSlots.default({\n href: href,\n route: route,\n navigate: handler,\n isActive: classes[activeClass],\n isExactActive: classes[exactActiveClass]\n });\n\n if (scopedSlot) {\n if (false) {\n !warnedCustomSlot && warn(false, 'In Vue Router 4, the v-slot API will by default wrap its content with an element. Use the custom prop to remove this warning:\\n\\n');\n warnedCustomSlot = true;\n }\n if (scopedSlot.length === 1) {\n return scopedSlot[0]\n } else if (scopedSlot.length > 1 || !scopedSlot.length) {\n if (false) {\n warn(\n false,\n (\" with to=\\\"\" + (this.to) + \"\\\" is trying to use a scoped slot but it didn't provide exactly one child. Wrapping the content with a span element.\")\n );\n }\n return scopedSlot.length === 0 ? h() : h('span', {}, scopedSlot)\n }\n }\n\n if (false) {\n if ('tag' in this.$options.propsData && !warnedTagProp) {\n warn(\n false,\n \"'s tag prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.\"\n );\n warnedTagProp = true;\n }\n if ('event' in this.$options.propsData && !warnedEventProp) {\n warn(\n false,\n \"'s event prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.\"\n );\n warnedEventProp = true;\n }\n }\n\n if (this.tag === 'a') {\n data.on = on;\n data.attrs = { href: href, 'aria-current': ariaCurrentValue };\n } else {\n // find the first child and apply listener and href\n var a = findAnchor(this.$slots.default);\n if (a) {\n // in case the is a static node\n a.isStatic = false;\n var aData = (a.data = extend({}, a.data));\n aData.on = aData.on || {};\n // transform existing events in both objects into arrays so we can push later\n for (var event in aData.on) {\n var handler$1 = aData.on[event];\n if (event in on) {\n aData.on[event] = Array.isArray(handler$1) ? handler$1 : [handler$1];\n }\n }\n // append new listeners for router-link\n for (var event$1 in on) {\n if (event$1 in aData.on) {\n // on[event] is always a function\n aData.on[event$1].push(on[event$1]);\n } else {\n aData.on[event$1] = handler;\n }\n }\n\n var aAttrs = (a.data.attrs = extend({}, a.data.attrs));\n aAttrs.href = href;\n aAttrs['aria-current'] = ariaCurrentValue;\n } else {\n // doesn't have child, apply listener to self\n data.on = on;\n }\n }\n\n return h(this.tag, data, this.$slots.default)\n }\n};\n\nfunction guardEvent (e) {\n // don't redirect with control keys\n if (e.metaKey || e.altKey || e.ctrlKey || e.shiftKey) { return }\n // don't redirect when preventDefault called\n if (e.defaultPrevented) { return }\n // don't redirect on right click\n if (e.button !== undefined && e.button !== 0) { return }\n // don't redirect if `target=\"_blank\"`\n if (e.currentTarget && e.currentTarget.getAttribute) {\n var target = e.currentTarget.getAttribute('target');\n if (/\\b_blank\\b/i.test(target)) { return }\n }\n // this may be a Weex event which doesn't have this method\n if (e.preventDefault) {\n e.preventDefault();\n }\n return true\n}\n\nfunction findAnchor (children) {\n if (children) {\n var child;\n for (var i = 0; i < children.length; i++) {\n child = children[i];\n if (child.tag === 'a') {\n return child\n }\n if (child.children && (child = findAnchor(child.children))) {\n return child\n }\n }\n }\n}\n\nvar _Vue;\n\nfunction install (Vue) {\n if (install.installed && _Vue === Vue) { return }\n install.installed = true;\n\n _Vue = Vue;\n\n var isDef = function (v) { return v !== undefined; };\n\n var registerInstance = function (vm, callVal) {\n var i = vm.$options._parentVnode;\n if (isDef(i) && isDef(i = i.data) && isDef(i = i.registerRouteInstance)) {\n i(vm, callVal);\n }\n };\n\n Vue.mixin({\n beforeCreate: function beforeCreate () {\n if (isDef(this.$options.router)) {\n this._routerRoot = this;\n this._router = this.$options.router;\n this._router.init(this);\n Vue.util.defineReactive(this, '_route', this._router.history.current);\n } else {\n this._routerRoot = (this.$parent && this.$parent._routerRoot) || this;\n }\n registerInstance(this, this);\n },\n destroyed: function destroyed () {\n registerInstance(this);\n }\n });\n\n Object.defineProperty(Vue.prototype, '$router', {\n get: function get () { return this._routerRoot._router }\n });\n\n Object.defineProperty(Vue.prototype, '$route', {\n get: function get () { return this._routerRoot._route }\n });\n\n Vue.component('RouterView', View);\n Vue.component('RouterLink', Link);\n\n var strats = Vue.config.optionMergeStrategies;\n // use the same hook merging strategy for route hooks\n strats.beforeRouteEnter = strats.beforeRouteLeave = strats.beforeRouteUpdate = strats.created;\n}\n\n/* */\n\nvar inBrowser = typeof window !== 'undefined';\n\n/* */\n\nfunction createRouteMap (\n routes,\n oldPathList,\n oldPathMap,\n oldNameMap,\n parentRoute\n) {\n // the path list is used to control path matching priority\n var pathList = oldPathList || [];\n // $flow-disable-line\n var pathMap = oldPathMap || Object.create(null);\n // $flow-disable-line\n var nameMap = oldNameMap || Object.create(null);\n\n routes.forEach(function (route) {\n addRouteRecord(pathList, pathMap, nameMap, route, parentRoute);\n });\n\n // ensure wildcard routes are always at the end\n for (var i = 0, l = pathList.length; i < l; i++) {\n if (pathList[i] === '*') {\n pathList.push(pathList.splice(i, 1)[0]);\n l--;\n i--;\n }\n }\n\n if (false) {\n // warn if routes do not include leading slashes\n var found = pathList\n // check for missing leading slash\n .filter(function (path) { return path && path.charAt(0) !== '*' && path.charAt(0) !== '/'; });\n\n if (found.length > 0) {\n var pathNames = found.map(function (path) { return (\"- \" + path); }).join('\\n');\n warn(false, (\"Non-nested routes must include a leading slash character. Fix the following routes: \\n\" + pathNames));\n }\n }\n\n return {\n pathList: pathList,\n pathMap: pathMap,\n nameMap: nameMap\n }\n}\n\nfunction addRouteRecord (\n pathList,\n pathMap,\n nameMap,\n route,\n parent,\n matchAs\n) {\n var path = route.path;\n var name = route.name;\n if (false) {\n assert(path != null, \"\\\"path\\\" is required in a route configuration.\");\n assert(\n typeof route.component !== 'string',\n \"route config \\\"component\\\" for path: \" + (String(\n path || name\n )) + \" cannot be a \" + \"string id. Use an actual component instead.\"\n );\n\n warn(\n // eslint-disable-next-line no-control-regex\n !/[^\\u0000-\\u007F]+/.test(path),\n \"Route with path \\\"\" + path + \"\\\" contains unencoded characters, make sure \" +\n \"your path is correctly encoded before passing it to the router. Use \" +\n \"encodeURI to encode static segments of your path.\"\n );\n }\n\n var pathToRegexpOptions =\n route.pathToRegexpOptions || {};\n var normalizedPath = normalizePath(path, parent, pathToRegexpOptions.strict);\n\n if (typeof route.caseSensitive === 'boolean') {\n pathToRegexpOptions.sensitive = route.caseSensitive;\n }\n\n var record = {\n path: normalizedPath,\n regex: compileRouteRegex(normalizedPath, pathToRegexpOptions),\n components: route.components || { default: route.component },\n alias: route.alias\n ? typeof route.alias === 'string'\n ? [route.alias]\n : route.alias\n : [],\n instances: {},\n enteredCbs: {},\n name: name,\n parent: parent,\n matchAs: matchAs,\n redirect: route.redirect,\n beforeEnter: route.beforeEnter,\n meta: route.meta || {},\n props:\n route.props == null\n ? {}\n : route.components\n ? route.props\n : { default: route.props }\n };\n\n if (route.children) {\n // Warn if route is named, does not redirect and has a default child route.\n // If users navigate to this route by name, the default child will\n // not be rendered (GH Issue #629)\n if (false) {\n if (\n route.name &&\n !route.redirect &&\n route.children.some(function (child) { return /^\\/?$/.test(child.path); })\n ) {\n warn(\n false,\n \"Named Route '\" + (route.name) + \"' has a default child route. \" +\n \"When navigating to this named route (:to=\\\"{name: '\" + (route.name) + \"'\\\"), \" +\n \"the default child route will not be rendered. Remove the name from \" +\n \"this route and use the name of the default child route for named \" +\n \"links instead.\"\n );\n }\n }\n route.children.forEach(function (child) {\n var childMatchAs = matchAs\n ? cleanPath((matchAs + \"/\" + (child.path)))\n : undefined;\n addRouteRecord(pathList, pathMap, nameMap, child, record, childMatchAs);\n });\n }\n\n if (!pathMap[record.path]) {\n pathList.push(record.path);\n pathMap[record.path] = record;\n }\n\n if (route.alias !== undefined) {\n var aliases = Array.isArray(route.alias) ? route.alias : [route.alias];\n for (var i = 0; i < aliases.length; ++i) {\n var alias = aliases[i];\n if (false) {\n warn(\n false,\n (\"Found an alias with the same value as the path: \\\"\" + path + \"\\\". You have to remove that alias. It will be ignored in development.\")\n );\n // skip in dev to make it work\n continue\n }\n\n var aliasRoute = {\n path: alias,\n children: route.children\n };\n addRouteRecord(\n pathList,\n pathMap,\n nameMap,\n aliasRoute,\n parent,\n record.path || '/' // matchAs\n );\n }\n }\n\n if (name) {\n if (!nameMap[name]) {\n nameMap[name] = record;\n } else if (false) {\n warn(\n false,\n \"Duplicate named routes definition: \" +\n \"{ name: \\\"\" + name + \"\\\", path: \\\"\" + (record.path) + \"\\\" }\"\n );\n }\n }\n}\n\nfunction compileRouteRegex (\n path,\n pathToRegexpOptions\n) {\n var regex = pathToRegexp_1(path, [], pathToRegexpOptions);\n if (false) {\n var keys = Object.create(null);\n regex.keys.forEach(function (key) {\n warn(\n !keys[key.name],\n (\"Duplicate param keys in route with path: \\\"\" + path + \"\\\"\")\n );\n keys[key.name] = true;\n });\n }\n return regex\n}\n\nfunction normalizePath (\n path,\n parent,\n strict\n) {\n if (!strict) { path = path.replace(/\\/$/, ''); }\n if (path[0] === '/') { return path }\n if (parent == null) { return path }\n return cleanPath(((parent.path) + \"/\" + path))\n}\n\n/* */\n\n\n\nfunction createMatcher (\n routes,\n router\n) {\n var ref = createRouteMap(routes);\n var pathList = ref.pathList;\n var pathMap = ref.pathMap;\n var nameMap = ref.nameMap;\n\n function addRoutes (routes) {\n createRouteMap(routes, pathList, pathMap, nameMap);\n }\n\n function addRoute (parentOrRoute, route) {\n var parent = (typeof parentOrRoute !== 'object') ? nameMap[parentOrRoute] : undefined;\n // $flow-disable-line\n createRouteMap([route || parentOrRoute], pathList, pathMap, nameMap, parent);\n\n // add aliases of parent\n if (parent) {\n createRouteMap(\n // $flow-disable-line route is defined if parent is\n parent.alias.map(function (alias) { return ({ path: alias, children: [route] }); }),\n pathList,\n pathMap,\n nameMap,\n parent\n );\n }\n }\n\n function getRoutes () {\n return pathList.map(function (path) { return pathMap[path]; })\n }\n\n function match (\n raw,\n currentRoute,\n redirectedFrom\n ) {\n var location = normalizeLocation(raw, currentRoute, false, router);\n var name = location.name;\n\n if (name) {\n var record = nameMap[name];\n if (false) {\n warn(record, (\"Route with name '\" + name + \"' does not exist\"));\n }\n if (!record) { return _createRoute(null, location) }\n var paramNames = record.regex.keys\n .filter(function (key) { return !key.optional; })\n .map(function (key) { return key.name; });\n\n if (typeof location.params !== 'object') {\n location.params = {};\n }\n\n if (currentRoute && typeof currentRoute.params === 'object') {\n for (var key in currentRoute.params) {\n if (!(key in location.params) && paramNames.indexOf(key) > -1) {\n location.params[key] = currentRoute.params[key];\n }\n }\n }\n\n location.path = fillParams(record.path, location.params, (\"named route \\\"\" + name + \"\\\"\"));\n return _createRoute(record, location, redirectedFrom)\n } else if (location.path) {\n location.params = {};\n for (var i = 0; i < pathList.length; i++) {\n var path = pathList[i];\n var record$1 = pathMap[path];\n if (matchRoute(record$1.regex, location.path, location.params)) {\n return _createRoute(record$1, location, redirectedFrom)\n }\n }\n }\n // no match\n return _createRoute(null, location)\n }\n\n function redirect (\n record,\n location\n ) {\n var originalRedirect = record.redirect;\n var redirect = typeof originalRedirect === 'function'\n ? originalRedirect(createRoute(record, location, null, router))\n : originalRedirect;\n\n if (typeof redirect === 'string') {\n redirect = { path: redirect };\n }\n\n if (!redirect || typeof redirect !== 'object') {\n if (false) {\n warn(\n false, (\"invalid redirect option: \" + (JSON.stringify(redirect)))\n );\n }\n return _createRoute(null, location)\n }\n\n var re = redirect;\n var name = re.name;\n var path = re.path;\n var query = location.query;\n var hash = location.hash;\n var params = location.params;\n query = re.hasOwnProperty('query') ? re.query : query;\n hash = re.hasOwnProperty('hash') ? re.hash : hash;\n params = re.hasOwnProperty('params') ? re.params : params;\n\n if (name) {\n // resolved named direct\n var targetRecord = nameMap[name];\n if (false) {\n assert(targetRecord, (\"redirect failed: named route \\\"\" + name + \"\\\" not found.\"));\n }\n return match({\n _normalized: true,\n name: name,\n query: query,\n hash: hash,\n params: params\n }, undefined, location)\n } else if (path) {\n // 1. resolve relative redirect\n var rawPath = resolveRecordPath(path, record);\n // 2. resolve params\n var resolvedPath = fillParams(rawPath, params, (\"redirect route with path \\\"\" + rawPath + \"\\\"\"));\n // 3. rematch with existing query and hash\n return match({\n _normalized: true,\n path: resolvedPath,\n query: query,\n hash: hash\n }, undefined, location)\n } else {\n if (false) {\n warn(false, (\"invalid redirect option: \" + (JSON.stringify(redirect))));\n }\n return _createRoute(null, location)\n }\n }\n\n function alias (\n record,\n location,\n matchAs\n ) {\n var aliasedPath = fillParams(matchAs, location.params, (\"aliased route with path \\\"\" + matchAs + \"\\\"\"));\n var aliasedMatch = match({\n _normalized: true,\n path: aliasedPath\n });\n if (aliasedMatch) {\n var matched = aliasedMatch.matched;\n var aliasedRecord = matched[matched.length - 1];\n location.params = aliasedMatch.params;\n return _createRoute(aliasedRecord, location)\n }\n return _createRoute(null, location)\n }\n\n function _createRoute (\n record,\n location,\n redirectedFrom\n ) {\n if (record && record.redirect) {\n return redirect(record, redirectedFrom || location)\n }\n if (record && record.matchAs) {\n return alias(record, location, record.matchAs)\n }\n return createRoute(record, location, redirectedFrom, router)\n }\n\n return {\n match: match,\n addRoute: addRoute,\n getRoutes: getRoutes,\n addRoutes: addRoutes\n }\n}\n\nfunction matchRoute (\n regex,\n path,\n params\n) {\n var m = path.match(regex);\n\n if (!m) {\n return false\n } else if (!params) {\n return true\n }\n\n for (var i = 1, len = m.length; i < len; ++i) {\n var key = regex.keys[i - 1];\n if (key) {\n // Fix #1994: using * with props: true generates a param named 0\n params[key.name || 'pathMatch'] = typeof m[i] === 'string' ? decode(m[i]) : m[i];\n }\n }\n\n return true\n}\n\nfunction resolveRecordPath (path, record) {\n return resolvePath(path, record.parent ? record.parent.path : '/', true)\n}\n\n/* */\n\n// use User Timing api (if present) for more accurate key precision\nvar Time =\n inBrowser && window.performance && window.performance.now\n ? window.performance\n : Date;\n\nfunction genStateKey () {\n return Time.now().toFixed(3)\n}\n\nvar _key = genStateKey();\n\nfunction getStateKey () {\n return _key\n}\n\nfunction setStateKey (key) {\n return (_key = key)\n}\n\n/* */\n\nvar positionStore = Object.create(null);\n\nfunction setupScroll () {\n // Prevent browser scroll behavior on History popstate\n if ('scrollRestoration' in window.history) {\n window.history.scrollRestoration = 'manual';\n }\n // Fix for #1585 for Firefox\n // Fix for #2195 Add optional third attribute to workaround a bug in safari https://bugs.webkit.org/show_bug.cgi?id=182678\n // Fix for #2774 Support for apps loaded from Windows file shares not mapped to network drives: replaced location.origin with\n // window.location.protocol + '//' + window.location.host\n // location.host contains the port and location.hostname doesn't\n var protocolAndPath = window.location.protocol + '//' + window.location.host;\n var absolutePath = window.location.href.replace(protocolAndPath, '');\n // preserve existing history state as it could be overriden by the user\n var stateCopy = extend({}, window.history.state);\n stateCopy.key = getStateKey();\n window.history.replaceState(stateCopy, '', absolutePath);\n window.addEventListener('popstate', handlePopState);\n return function () {\n window.removeEventListener('popstate', handlePopState);\n }\n}\n\nfunction handleScroll (\n router,\n to,\n from,\n isPop\n) {\n if (!router.app) {\n return\n }\n\n var behavior = router.options.scrollBehavior;\n if (!behavior) {\n return\n }\n\n if (false) {\n assert(typeof behavior === 'function', \"scrollBehavior must be a function\");\n }\n\n // wait until re-render finishes before scrolling\n router.app.$nextTick(function () {\n var position = getScrollPosition();\n var shouldScroll = behavior.call(\n router,\n to,\n from,\n isPop ? position : null\n );\n\n if (!shouldScroll) {\n return\n }\n\n if (typeof shouldScroll.then === 'function') {\n shouldScroll\n .then(function (shouldScroll) {\n scrollToPosition((shouldScroll), position);\n })\n .catch(function (err) {\n if (false) {\n assert(false, err.toString());\n }\n });\n } else {\n scrollToPosition(shouldScroll, position);\n }\n });\n}\n\nfunction saveScrollPosition () {\n var key = getStateKey();\n if (key) {\n positionStore[key] = {\n x: window.pageXOffset,\n y: window.pageYOffset\n };\n }\n}\n\nfunction handlePopState (e) {\n saveScrollPosition();\n if (e.state && e.state.key) {\n setStateKey(e.state.key);\n }\n}\n\nfunction getScrollPosition () {\n var key = getStateKey();\n if (key) {\n return positionStore[key]\n }\n}\n\nfunction getElementPosition (el, offset) {\n var docEl = document.documentElement;\n var docRect = docEl.getBoundingClientRect();\n var elRect = el.getBoundingClientRect();\n return {\n x: elRect.left - docRect.left - offset.x,\n y: elRect.top - docRect.top - offset.y\n }\n}\n\nfunction isValidPosition (obj) {\n return isNumber(obj.x) || isNumber(obj.y)\n}\n\nfunction normalizePosition (obj) {\n return {\n x: isNumber(obj.x) ? obj.x : window.pageXOffset,\n y: isNumber(obj.y) ? obj.y : window.pageYOffset\n }\n}\n\nfunction normalizeOffset (obj) {\n return {\n x: isNumber(obj.x) ? obj.x : 0,\n y: isNumber(obj.y) ? obj.y : 0\n }\n}\n\nfunction isNumber (v) {\n return typeof v === 'number'\n}\n\nvar hashStartsWithNumberRE = /^#\\d/;\n\nfunction scrollToPosition (shouldScroll, position) {\n var isObject = typeof shouldScroll === 'object';\n if (isObject && typeof shouldScroll.selector === 'string') {\n // getElementById would still fail if the selector contains a more complicated query like #main[data-attr]\n // but at the same time, it doesn't make much sense to select an element with an id and an extra selector\n var el = hashStartsWithNumberRE.test(shouldScroll.selector) // $flow-disable-line\n ? document.getElementById(shouldScroll.selector.slice(1)) // $flow-disable-line\n : document.querySelector(shouldScroll.selector);\n\n if (el) {\n var offset =\n shouldScroll.offset && typeof shouldScroll.offset === 'object'\n ? shouldScroll.offset\n : {};\n offset = normalizeOffset(offset);\n position = getElementPosition(el, offset);\n } else if (isValidPosition(shouldScroll)) {\n position = normalizePosition(shouldScroll);\n }\n } else if (isObject && isValidPosition(shouldScroll)) {\n position = normalizePosition(shouldScroll);\n }\n\n if (position) {\n // $flow-disable-line\n if ('scrollBehavior' in document.documentElement.style) {\n window.scrollTo({\n left: position.x,\n top: position.y,\n // $flow-disable-line\n behavior: shouldScroll.behavior\n });\n } else {\n window.scrollTo(position.x, position.y);\n }\n }\n}\n\n/* */\n\nvar supportsPushState =\n inBrowser &&\n (function () {\n var ua = window.navigator.userAgent;\n\n if (\n (ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) &&\n ua.indexOf('Mobile Safari') !== -1 &&\n ua.indexOf('Chrome') === -1 &&\n ua.indexOf('Windows Phone') === -1\n ) {\n return false\n }\n\n return window.history && typeof window.history.pushState === 'function'\n })();\n\nfunction pushState (url, replace) {\n saveScrollPosition();\n // try...catch the pushState call to get around Safari\n // DOM Exception 18 where it limits to 100 pushState calls\n var history = window.history;\n try {\n if (replace) {\n // preserve existing history state as it could be overriden by the user\n var stateCopy = extend({}, history.state);\n stateCopy.key = getStateKey();\n history.replaceState(stateCopy, '', url);\n } else {\n history.pushState({ key: setStateKey(genStateKey()) }, '', url);\n }\n } catch (e) {\n window.location[replace ? 'replace' : 'assign'](url);\n }\n}\n\nfunction replaceState (url) {\n pushState(url, true);\n}\n\n/* */\n\nfunction runQueue (queue, fn, cb) {\n var step = function (index) {\n if (index >= queue.length) {\n cb();\n } else {\n if (queue[index]) {\n fn(queue[index], function () {\n step(index + 1);\n });\n } else {\n step(index + 1);\n }\n }\n };\n step(0);\n}\n\n// When changing thing, also edit router.d.ts\nvar NavigationFailureType = {\n redirected: 2,\n aborted: 4,\n cancelled: 8,\n duplicated: 16\n};\n\nfunction createNavigationRedirectedError (from, to) {\n return createRouterError(\n from,\n to,\n NavigationFailureType.redirected,\n (\"Redirected when going from \\\"\" + (from.fullPath) + \"\\\" to \\\"\" + (stringifyRoute(\n to\n )) + \"\\\" via a navigation guard.\")\n )\n}\n\nfunction createNavigationDuplicatedError (from, to) {\n var error = createRouterError(\n from,\n to,\n NavigationFailureType.duplicated,\n (\"Avoided redundant navigation to current location: \\\"\" + (from.fullPath) + \"\\\".\")\n );\n // backwards compatible with the first introduction of Errors\n error.name = 'NavigationDuplicated';\n return error\n}\n\nfunction createNavigationCancelledError (from, to) {\n return createRouterError(\n from,\n to,\n NavigationFailureType.cancelled,\n (\"Navigation cancelled from \\\"\" + (from.fullPath) + \"\\\" to \\\"\" + (to.fullPath) + \"\\\" with a new navigation.\")\n )\n}\n\nfunction createNavigationAbortedError (from, to) {\n return createRouterError(\n from,\n to,\n NavigationFailureType.aborted,\n (\"Navigation aborted from \\\"\" + (from.fullPath) + \"\\\" to \\\"\" + (to.fullPath) + \"\\\" via a navigation guard.\")\n )\n}\n\nfunction createRouterError (from, to, type, message) {\n var error = new Error(message);\n error._isRouter = true;\n error.from = from;\n error.to = to;\n error.type = type;\n\n return error\n}\n\nvar propertiesToLog = ['params', 'query', 'hash'];\n\nfunction stringifyRoute (to) {\n if (typeof to === 'string') { return to }\n if ('path' in to) { return to.path }\n var location = {};\n propertiesToLog.forEach(function (key) {\n if (key in to) { location[key] = to[key]; }\n });\n return JSON.stringify(location, null, 2)\n}\n\nfunction isError (err) {\n return Object.prototype.toString.call(err).indexOf('Error') > -1\n}\n\nfunction isNavigationFailure (err, errorType) {\n return (\n isError(err) &&\n err._isRouter &&\n (errorType == null || err.type === errorType)\n )\n}\n\n/* */\n\nfunction resolveAsyncComponents (matched) {\n return function (to, from, next) {\n var hasAsync = false;\n var pending = 0;\n var error = null;\n\n flatMapComponents(matched, function (def, _, match, key) {\n // if it's a function and doesn't have cid attached,\n // assume it's an async component resolve function.\n // we are not using Vue's default async resolving mechanism because\n // we want to halt the navigation until the incoming component has been\n // resolved.\n if (typeof def === 'function' && def.cid === undefined) {\n hasAsync = true;\n pending++;\n\n var resolve = once(function (resolvedDef) {\n if (isESModule(resolvedDef)) {\n resolvedDef = resolvedDef.default;\n }\n // save resolved on async factory in case it's used elsewhere\n def.resolved = typeof resolvedDef === 'function'\n ? resolvedDef\n : _Vue.extend(resolvedDef);\n match.components[key] = resolvedDef;\n pending--;\n if (pending <= 0) {\n next();\n }\n });\n\n var reject = once(function (reason) {\n var msg = \"Failed to resolve async component \" + key + \": \" + reason;\n \"production\" !== 'production' && warn(false, msg);\n if (!error) {\n error = isError(reason)\n ? reason\n : new Error(msg);\n next(error);\n }\n });\n\n var res;\n try {\n res = def(resolve, reject);\n } catch (e) {\n reject(e);\n }\n if (res) {\n if (typeof res.then === 'function') {\n res.then(resolve, reject);\n } else {\n // new syntax in Vue 2.3\n var comp = res.component;\n if (comp && typeof comp.then === 'function') {\n comp.then(resolve, reject);\n }\n }\n }\n }\n });\n\n if (!hasAsync) { next(); }\n }\n}\n\nfunction flatMapComponents (\n matched,\n fn\n) {\n return flatten(matched.map(function (m) {\n return Object.keys(m.components).map(function (key) { return fn(\n m.components[key],\n m.instances[key],\n m, key\n ); })\n }))\n}\n\nfunction flatten (arr) {\n return Array.prototype.concat.apply([], arr)\n}\n\nvar hasSymbol =\n typeof Symbol === 'function' &&\n typeof Symbol.toStringTag === 'symbol';\n\nfunction isESModule (obj) {\n return obj.__esModule || (hasSymbol && obj[Symbol.toStringTag] === 'Module')\n}\n\n// in Webpack 2, require.ensure now also returns a Promise\n// so the resolve/reject functions may get called an extra time\n// if the user uses an arrow function shorthand that happens to\n// return that Promise.\nfunction once (fn) {\n var called = false;\n return function () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n if (called) { return }\n called = true;\n return fn.apply(this, args)\n }\n}\n\n/* */\n\nvar History = function History (router, base) {\n this.router = router;\n this.base = normalizeBase(base);\n // start with a route object that stands for \"nowhere\"\n this.current = START;\n this.pending = null;\n this.ready = false;\n this.readyCbs = [];\n this.readyErrorCbs = [];\n this.errorCbs = [];\n this.listeners = [];\n};\n\nHistory.prototype.listen = function listen (cb) {\n this.cb = cb;\n};\n\nHistory.prototype.onReady = function onReady (cb, errorCb) {\n if (this.ready) {\n cb();\n } else {\n this.readyCbs.push(cb);\n if (errorCb) {\n this.readyErrorCbs.push(errorCb);\n }\n }\n};\n\nHistory.prototype.onError = function onError (errorCb) {\n this.errorCbs.push(errorCb);\n};\n\nHistory.prototype.transitionTo = function transitionTo (\n location,\n onComplete,\n onAbort\n) {\n var this$1 = this;\n\n var route;\n // catch redirect option https://github.com/vuejs/vue-router/issues/3201\n try {\n route = this.router.match(location, this.current);\n } catch (e) {\n this.errorCbs.forEach(function (cb) {\n cb(e);\n });\n // Exception should still be thrown\n throw e\n }\n var prev = this.current;\n this.confirmTransition(\n route,\n function () {\n this$1.updateRoute(route);\n onComplete && onComplete(route);\n this$1.ensureURL();\n this$1.router.afterHooks.forEach(function (hook) {\n hook && hook(route, prev);\n });\n\n // fire ready cbs once\n if (!this$1.ready) {\n this$1.ready = true;\n this$1.readyCbs.forEach(function (cb) {\n cb(route);\n });\n }\n },\n function (err) {\n if (onAbort) {\n onAbort(err);\n }\n if (err && !this$1.ready) {\n // Initial redirection should not mark the history as ready yet\n // because it's triggered by the redirection instead\n // https://github.com/vuejs/vue-router/issues/3225\n // https://github.com/vuejs/vue-router/issues/3331\n if (!isNavigationFailure(err, NavigationFailureType.redirected) || prev !== START) {\n this$1.ready = true;\n this$1.readyErrorCbs.forEach(function (cb) {\n cb(err);\n });\n }\n }\n }\n );\n};\n\nHistory.prototype.confirmTransition = function confirmTransition (route, onComplete, onAbort) {\n var this$1 = this;\n\n var current = this.current;\n this.pending = route;\n var abort = function (err) {\n // changed after adding errors with\n // https://github.com/vuejs/vue-router/pull/3047 before that change,\n // redirect and aborted navigation would produce an err == null\n if (!isNavigationFailure(err) && isError(err)) {\n if (this$1.errorCbs.length) {\n this$1.errorCbs.forEach(function (cb) {\n cb(err);\n });\n } else {\n warn(false, 'uncaught error during route navigation:');\n console.error(err);\n }\n }\n onAbort && onAbort(err);\n };\n var lastRouteIndex = route.matched.length - 1;\n var lastCurrentIndex = current.matched.length - 1;\n if (\n isSameRoute(route, current) &&\n // in the case the route map has been dynamically appended to\n lastRouteIndex === lastCurrentIndex &&\n route.matched[lastRouteIndex] === current.matched[lastCurrentIndex]\n ) {\n this.ensureURL();\n return abort(createNavigationDuplicatedError(current, route))\n }\n\n var ref = resolveQueue(\n this.current.matched,\n route.matched\n );\n var updated = ref.updated;\n var deactivated = ref.deactivated;\n var activated = ref.activated;\n\n var queue = [].concat(\n // in-component leave guards\n extractLeaveGuards(deactivated),\n // global before hooks\n this.router.beforeHooks,\n // in-component update hooks\n extractUpdateHooks(updated),\n // in-config enter guards\n activated.map(function (m) { return m.beforeEnter; }),\n // async components\n resolveAsyncComponents(activated)\n );\n\n var iterator = function (hook, next) {\n if (this$1.pending !== route) {\n return abort(createNavigationCancelledError(current, route))\n }\n try {\n hook(route, current, function (to) {\n if (to === false) {\n // next(false) -> abort navigation, ensure current URL\n this$1.ensureURL(true);\n abort(createNavigationAbortedError(current, route));\n } else if (isError(to)) {\n this$1.ensureURL(true);\n abort(to);\n } else if (\n typeof to === 'string' ||\n (typeof to === 'object' &&\n (typeof to.path === 'string' || typeof to.name === 'string'))\n ) {\n // next('/') or next({ path: '/' }) -> redirect\n abort(createNavigationRedirectedError(current, route));\n if (typeof to === 'object' && to.replace) {\n this$1.replace(to);\n } else {\n this$1.push(to);\n }\n } else {\n // confirm transition and pass on the value\n next(to);\n }\n });\n } catch (e) {\n abort(e);\n }\n };\n\n runQueue(queue, iterator, function () {\n // wait until async components are resolved before\n // extracting in-component enter guards\n var enterGuards = extractEnterGuards(activated);\n var queue = enterGuards.concat(this$1.router.resolveHooks);\n runQueue(queue, iterator, function () {\n if (this$1.pending !== route) {\n return abort(createNavigationCancelledError(current, route))\n }\n this$1.pending = null;\n onComplete(route);\n if (this$1.router.app) {\n this$1.router.app.$nextTick(function () {\n handleRouteEntered(route);\n });\n }\n });\n });\n};\n\nHistory.prototype.updateRoute = function updateRoute (route) {\n this.current = route;\n this.cb && this.cb(route);\n};\n\nHistory.prototype.setupListeners = function setupListeners () {\n // Default implementation is empty\n};\n\nHistory.prototype.teardown = function teardown () {\n // clean up event listeners\n // https://github.com/vuejs/vue-router/issues/2341\n this.listeners.forEach(function (cleanupListener) {\n cleanupListener();\n });\n this.listeners = [];\n\n // reset current history route\n // https://github.com/vuejs/vue-router/issues/3294\n this.current = START;\n this.pending = null;\n};\n\nfunction normalizeBase (base) {\n if (!base) {\n if (inBrowser) {\n // respect tag\n var baseEl = document.querySelector('base');\n base = (baseEl && baseEl.getAttribute('href')) || '/';\n // strip full URL origin\n base = base.replace(/^https?:\\/\\/[^\\/]+/, '');\n } else {\n base = '/';\n }\n }\n // make sure there's the starting slash\n if (base.charAt(0) !== '/') {\n base = '/' + base;\n }\n // remove trailing slash\n return base.replace(/\\/$/, '')\n}\n\nfunction resolveQueue (\n current,\n next\n) {\n var i;\n var max = Math.max(current.length, next.length);\n for (i = 0; i < max; i++) {\n if (current[i] !== next[i]) {\n break\n }\n }\n return {\n updated: next.slice(0, i),\n activated: next.slice(i),\n deactivated: current.slice(i)\n }\n}\n\nfunction extractGuards (\n records,\n name,\n bind,\n reverse\n) {\n var guards = flatMapComponents(records, function (def, instance, match, key) {\n var guard = extractGuard(def, name);\n if (guard) {\n return Array.isArray(guard)\n ? guard.map(function (guard) { return bind(guard, instance, match, key); })\n : bind(guard, instance, match, key)\n }\n });\n return flatten(reverse ? guards.reverse() : guards)\n}\n\nfunction extractGuard (\n def,\n key\n) {\n if (typeof def !== 'function') {\n // extend now so that global mixins are applied.\n def = _Vue.extend(def);\n }\n return def.options[key]\n}\n\nfunction extractLeaveGuards (deactivated) {\n return extractGuards(deactivated, 'beforeRouteLeave', bindGuard, true)\n}\n\nfunction extractUpdateHooks (updated) {\n return extractGuards(updated, 'beforeRouteUpdate', bindGuard)\n}\n\nfunction bindGuard (guard, instance) {\n if (instance) {\n return function boundRouteGuard () {\n return guard.apply(instance, arguments)\n }\n }\n}\n\nfunction extractEnterGuards (\n activated\n) {\n return extractGuards(\n activated,\n 'beforeRouteEnter',\n function (guard, _, match, key) {\n return bindEnterGuard(guard, match, key)\n }\n )\n}\n\nfunction bindEnterGuard (\n guard,\n match,\n key\n) {\n return function routeEnterGuard (to, from, next) {\n return guard(to, from, function (cb) {\n if (typeof cb === 'function') {\n if (!match.enteredCbs[key]) {\n match.enteredCbs[key] = [];\n }\n match.enteredCbs[key].push(cb);\n }\n next(cb);\n })\n }\n}\n\n/* */\n\nvar HTML5History = /*@__PURE__*/(function (History) {\n function HTML5History (router, base) {\n History.call(this, router, base);\n\n this._startLocation = getLocation(this.base);\n }\n\n if ( History ) HTML5History.__proto__ = History;\n HTML5History.prototype = Object.create( History && History.prototype );\n HTML5History.prototype.constructor = HTML5History;\n\n HTML5History.prototype.setupListeners = function setupListeners () {\n var this$1 = this;\n\n if (this.listeners.length > 0) {\n return\n }\n\n var router = this.router;\n var expectScroll = router.options.scrollBehavior;\n var supportsScroll = supportsPushState && expectScroll;\n\n if (supportsScroll) {\n this.listeners.push(setupScroll());\n }\n\n var handleRoutingEvent = function () {\n var current = this$1.current;\n\n // Avoiding first `popstate` event dispatched in some browsers but first\n // history route not updated since async guard at the same time.\n var location = getLocation(this$1.base);\n if (this$1.current === START && location === this$1._startLocation) {\n return\n }\n\n this$1.transitionTo(location, function (route) {\n if (supportsScroll) {\n handleScroll(router, route, current, true);\n }\n });\n };\n window.addEventListener('popstate', handleRoutingEvent);\n this.listeners.push(function () {\n window.removeEventListener('popstate', handleRoutingEvent);\n });\n };\n\n HTML5History.prototype.go = function go (n) {\n window.history.go(n);\n };\n\n HTML5History.prototype.push = function push (location, onComplete, onAbort) {\n var this$1 = this;\n\n var ref = this;\n var fromRoute = ref.current;\n this.transitionTo(location, function (route) {\n pushState(cleanPath(this$1.base + route.fullPath));\n handleScroll(this$1.router, route, fromRoute, false);\n onComplete && onComplete(route);\n }, onAbort);\n };\n\n HTML5History.prototype.replace = function replace (location, onComplete, onAbort) {\n var this$1 = this;\n\n var ref = this;\n var fromRoute = ref.current;\n this.transitionTo(location, function (route) {\n replaceState(cleanPath(this$1.base + route.fullPath));\n handleScroll(this$1.router, route, fromRoute, false);\n onComplete && onComplete(route);\n }, onAbort);\n };\n\n HTML5History.prototype.ensureURL = function ensureURL (push) {\n if (getLocation(this.base) !== this.current.fullPath) {\n var current = cleanPath(this.base + this.current.fullPath);\n push ? pushState(current) : replaceState(current);\n }\n };\n\n HTML5History.prototype.getCurrentLocation = function getCurrentLocation () {\n return getLocation(this.base)\n };\n\n return HTML5History;\n}(History));\n\nfunction getLocation (base) {\n var path = window.location.pathname;\n if (base && path.toLowerCase().indexOf(base.toLowerCase()) === 0) {\n path = path.slice(base.length);\n }\n return (path || '/') + window.location.search + window.location.hash\n}\n\n/* */\n\nvar HashHistory = /*@__PURE__*/(function (History) {\n function HashHistory (router, base, fallback) {\n History.call(this, router, base);\n // check history fallback deeplinking\n if (fallback && checkFallback(this.base)) {\n return\n }\n ensureSlash();\n }\n\n if ( History ) HashHistory.__proto__ = History;\n HashHistory.prototype = Object.create( History && History.prototype );\n HashHistory.prototype.constructor = HashHistory;\n\n // this is delayed until the app mounts\n // to avoid the hashchange listener being fired too early\n HashHistory.prototype.setupListeners = function setupListeners () {\n var this$1 = this;\n\n if (this.listeners.length > 0) {\n return\n }\n\n var router = this.router;\n var expectScroll = router.options.scrollBehavior;\n var supportsScroll = supportsPushState && expectScroll;\n\n if (supportsScroll) {\n this.listeners.push(setupScroll());\n }\n\n var handleRoutingEvent = function () {\n var current = this$1.current;\n if (!ensureSlash()) {\n return\n }\n this$1.transitionTo(getHash(), function (route) {\n if (supportsScroll) {\n handleScroll(this$1.router, route, current, true);\n }\n if (!supportsPushState) {\n replaceHash(route.fullPath);\n }\n });\n };\n var eventType = supportsPushState ? 'popstate' : 'hashchange';\n window.addEventListener(\n eventType,\n handleRoutingEvent\n );\n this.listeners.push(function () {\n window.removeEventListener(eventType, handleRoutingEvent);\n });\n };\n\n HashHistory.prototype.push = function push (location, onComplete, onAbort) {\n var this$1 = this;\n\n var ref = this;\n var fromRoute = ref.current;\n this.transitionTo(\n location,\n function (route) {\n pushHash(route.fullPath);\n handleScroll(this$1.router, route, fromRoute, false);\n onComplete && onComplete(route);\n },\n onAbort\n );\n };\n\n HashHistory.prototype.replace = function replace (location, onComplete, onAbort) {\n var this$1 = this;\n\n var ref = this;\n var fromRoute = ref.current;\n this.transitionTo(\n location,\n function (route) {\n replaceHash(route.fullPath);\n handleScroll(this$1.router, route, fromRoute, false);\n onComplete && onComplete(route);\n },\n onAbort\n );\n };\n\n HashHistory.prototype.go = function go (n) {\n window.history.go(n);\n };\n\n HashHistory.prototype.ensureURL = function ensureURL (push) {\n var current = this.current.fullPath;\n if (getHash() !== current) {\n push ? pushHash(current) : replaceHash(current);\n }\n };\n\n HashHistory.prototype.getCurrentLocation = function getCurrentLocation () {\n return getHash()\n };\n\n return HashHistory;\n}(History));\n\nfunction checkFallback (base) {\n var location = getLocation(base);\n if (!/^\\/#/.test(location)) {\n window.location.replace(cleanPath(base + '/#' + location));\n return true\n }\n}\n\nfunction ensureSlash () {\n var path = getHash();\n if (path.charAt(0) === '/') {\n return true\n }\n replaceHash('/' + path);\n return false\n}\n\nfunction getHash () {\n // We can't use window.location.hash here because it's not\n // consistent across browsers - Firefox will pre-decode it!\n var href = window.location.href;\n var index = href.indexOf('#');\n // empty path\n if (index < 0) { return '' }\n\n href = href.slice(index + 1);\n\n return href\n}\n\nfunction getUrl (path) {\n var href = window.location.href;\n var i = href.indexOf('#');\n var base = i >= 0 ? href.slice(0, i) : href;\n return (base + \"#\" + path)\n}\n\nfunction pushHash (path) {\n if (supportsPushState) {\n pushState(getUrl(path));\n } else {\n window.location.hash = path;\n }\n}\n\nfunction replaceHash (path) {\n if (supportsPushState) {\n replaceState(getUrl(path));\n } else {\n window.location.replace(getUrl(path));\n }\n}\n\n/* */\n\nvar AbstractHistory = /*@__PURE__*/(function (History) {\n function AbstractHistory (router, base) {\n History.call(this, router, base);\n this.stack = [];\n this.index = -1;\n }\n\n if ( History ) AbstractHistory.__proto__ = History;\n AbstractHistory.prototype = Object.create( History && History.prototype );\n AbstractHistory.prototype.constructor = AbstractHistory;\n\n AbstractHistory.prototype.push = function push (location, onComplete, onAbort) {\n var this$1 = this;\n\n this.transitionTo(\n location,\n function (route) {\n this$1.stack = this$1.stack.slice(0, this$1.index + 1).concat(route);\n this$1.index++;\n onComplete && onComplete(route);\n },\n onAbort\n );\n };\n\n AbstractHistory.prototype.replace = function replace (location, onComplete, onAbort) {\n var this$1 = this;\n\n this.transitionTo(\n location,\n function (route) {\n this$1.stack = this$1.stack.slice(0, this$1.index).concat(route);\n onComplete && onComplete(route);\n },\n onAbort\n );\n };\n\n AbstractHistory.prototype.go = function go (n) {\n var this$1 = this;\n\n var targetIndex = this.index + n;\n if (targetIndex < 0 || targetIndex >= this.stack.length) {\n return\n }\n var route = this.stack[targetIndex];\n this.confirmTransition(\n route,\n function () {\n var prev = this$1.current;\n this$1.index = targetIndex;\n this$1.updateRoute(route);\n this$1.router.afterHooks.forEach(function (hook) {\n hook && hook(route, prev);\n });\n },\n function (err) {\n if (isNavigationFailure(err, NavigationFailureType.duplicated)) {\n this$1.index = targetIndex;\n }\n }\n );\n };\n\n AbstractHistory.prototype.getCurrentLocation = function getCurrentLocation () {\n var current = this.stack[this.stack.length - 1];\n return current ? current.fullPath : '/'\n };\n\n AbstractHistory.prototype.ensureURL = function ensureURL () {\n // noop\n };\n\n return AbstractHistory;\n}(History));\n\n/* */\n\nvar VueRouter = function VueRouter (options) {\n if ( options === void 0 ) options = {};\n\n this.app = null;\n this.apps = [];\n this.options = options;\n this.beforeHooks = [];\n this.resolveHooks = [];\n this.afterHooks = [];\n this.matcher = createMatcher(options.routes || [], this);\n\n var mode = options.mode || 'hash';\n this.fallback =\n mode === 'history' && !supportsPushState && options.fallback !== false;\n if (this.fallback) {\n mode = 'hash';\n }\n if (!inBrowser) {\n mode = 'abstract';\n }\n this.mode = mode;\n\n switch (mode) {\n case 'history':\n this.history = new HTML5History(this, options.base);\n break\n case 'hash':\n this.history = new HashHistory(this, options.base, this.fallback);\n break\n case 'abstract':\n this.history = new AbstractHistory(this, options.base);\n break\n default:\n if (false) {\n assert(false, (\"invalid mode: \" + mode));\n }\n }\n};\n\nvar prototypeAccessors = { currentRoute: { configurable: true } };\n\nVueRouter.prototype.match = function match (raw, current, redirectedFrom) {\n return this.matcher.match(raw, current, redirectedFrom)\n};\n\nprototypeAccessors.currentRoute.get = function () {\n return this.history && this.history.current\n};\n\nVueRouter.prototype.init = function init (app /* Vue component instance */) {\n var this$1 = this;\n\n \"production\" !== 'production' &&\n assert(\n install.installed,\n \"not installed. Make sure to call `Vue.use(VueRouter)` \" +\n \"before creating root instance.\"\n );\n\n this.apps.push(app);\n\n // set up app destroyed handler\n // https://github.com/vuejs/vue-router/issues/2639\n app.$once('hook:destroyed', function () {\n // clean out app from this.apps array once destroyed\n var index = this$1.apps.indexOf(app);\n if (index > -1) { this$1.apps.splice(index, 1); }\n // ensure we still have a main app or null if no apps\n // we do not release the router so it can be reused\n if (this$1.app === app) { this$1.app = this$1.apps[0] || null; }\n\n if (!this$1.app) { this$1.history.teardown(); }\n });\n\n // main app previously initialized\n // return as we don't need to set up new history listener\n if (this.app) {\n return\n }\n\n this.app = app;\n\n var history = this.history;\n\n if (history instanceof HTML5History || history instanceof HashHistory) {\n var handleInitialScroll = function (routeOrError) {\n var from = history.current;\n var expectScroll = this$1.options.scrollBehavior;\n var supportsScroll = supportsPushState && expectScroll;\n\n if (supportsScroll && 'fullPath' in routeOrError) {\n handleScroll(this$1, routeOrError, from, false);\n }\n };\n var setupListeners = function (routeOrError) {\n history.setupListeners();\n handleInitialScroll(routeOrError);\n };\n history.transitionTo(\n history.getCurrentLocation(),\n setupListeners,\n setupListeners\n );\n }\n\n history.listen(function (route) {\n this$1.apps.forEach(function (app) {\n app._route = route;\n });\n });\n};\n\nVueRouter.prototype.beforeEach = function beforeEach (fn) {\n return registerHook(this.beforeHooks, fn)\n};\n\nVueRouter.prototype.beforeResolve = function beforeResolve (fn) {\n return registerHook(this.resolveHooks, fn)\n};\n\nVueRouter.prototype.afterEach = function afterEach (fn) {\n return registerHook(this.afterHooks, fn)\n};\n\nVueRouter.prototype.onReady = function onReady (cb, errorCb) {\n this.history.onReady(cb, errorCb);\n};\n\nVueRouter.prototype.onError = function onError (errorCb) {\n this.history.onError(errorCb);\n};\n\nVueRouter.prototype.push = function push (location, onComplete, onAbort) {\n var this$1 = this;\n\n // $flow-disable-line\n if (!onComplete && !onAbort && typeof Promise !== 'undefined') {\n return new Promise(function (resolve, reject) {\n this$1.history.push(location, resolve, reject);\n })\n } else {\n this.history.push(location, onComplete, onAbort);\n }\n};\n\nVueRouter.prototype.replace = function replace (location, onComplete, onAbort) {\n var this$1 = this;\n\n // $flow-disable-line\n if (!onComplete && !onAbort && typeof Promise !== 'undefined') {\n return new Promise(function (resolve, reject) {\n this$1.history.replace(location, resolve, reject);\n })\n } else {\n this.history.replace(location, onComplete, onAbort);\n }\n};\n\nVueRouter.prototype.go = function go (n) {\n this.history.go(n);\n};\n\nVueRouter.prototype.back = function back () {\n this.go(-1);\n};\n\nVueRouter.prototype.forward = function forward () {\n this.go(1);\n};\n\nVueRouter.prototype.getMatchedComponents = function getMatchedComponents (to) {\n var route = to\n ? to.matched\n ? to\n : this.resolve(to).route\n : this.currentRoute;\n if (!route) {\n return []\n }\n return [].concat.apply(\n [],\n route.matched.map(function (m) {\n return Object.keys(m.components).map(function (key) {\n return m.components[key]\n })\n })\n )\n};\n\nVueRouter.prototype.resolve = function resolve (\n to,\n current,\n append\n) {\n current = current || this.history.current;\n var location = normalizeLocation(to, current, append, this);\n var route = this.match(location, current);\n var fullPath = route.redirectedFrom || route.fullPath;\n var base = this.history.base;\n var href = createHref(base, fullPath, this.mode);\n return {\n location: location,\n route: route,\n href: href,\n // for backwards compat\n normalizedTo: location,\n resolved: route\n }\n};\n\nVueRouter.prototype.getRoutes = function getRoutes () {\n return this.matcher.getRoutes()\n};\n\nVueRouter.prototype.addRoute = function addRoute (parentOrRoute, route) {\n this.matcher.addRoute(parentOrRoute, route);\n if (this.history.current !== START) {\n this.history.transitionTo(this.history.getCurrentLocation());\n }\n};\n\nVueRouter.prototype.addRoutes = function addRoutes (routes) {\n if (false) {\n warn(false, 'router.addRoutes() is deprecated and has been removed in Vue Router 4. Use router.addRoute() instead.');\n }\n this.matcher.addRoutes(routes);\n if (this.history.current !== START) {\n this.history.transitionTo(this.history.getCurrentLocation());\n }\n};\n\nObject.defineProperties( VueRouter.prototype, prototypeAccessors );\n\nfunction registerHook (list, fn) {\n list.push(fn);\n return function () {\n var i = list.indexOf(fn);\n if (i > -1) { list.splice(i, 1); }\n }\n}\n\nfunction createHref (base, fullPath, mode) {\n var path = mode === 'hash' ? '#' + fullPath : fullPath;\n return base ? cleanPath(base + '/' + path) : path\n}\n\nVueRouter.install = install;\nVueRouter.version = '3.5.1';\nVueRouter.isNavigationFailure = isNavigationFailure;\nVueRouter.NavigationFailureType = NavigationFailureType;\nVueRouter.START_LOCATION = START;\n\nif (inBrowser && window.Vue) {\n window.Vue.use(VueRouter);\n}\n\n/* harmony default export */ __webpack_exports__[\"a\"] = (VueRouter);\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"/ocq.js","sources":["webpack:///./node_modules/vue-router/dist/vue-router.esm.js?fe87"],"sourcesContent":["/*!\n  * vue-router v3.5.1\n  * (c) 2021 Evan You\n  * @license MIT\n  */\n/*  */\n\nfunction assert (condition, message) {\n  if (!condition) {\n    throw new Error((\"[vue-router] \" + message))\n  }\n}\n\nfunction warn (condition, message) {\n  if (process.env.NODE_ENV !== 'production' && !condition) {\n    typeof console !== 'undefined' && console.warn((\"[vue-router] \" + message));\n  }\n}\n\nfunction extend (a, b) {\n  for (var key in b) {\n    a[key] = b[key];\n  }\n  return a\n}\n\n/*  */\n\nvar encodeReserveRE = /[!'()*]/g;\nvar encodeReserveReplacer = function (c) { return '%' + c.charCodeAt(0).toString(16); };\nvar commaRE = /%2C/g;\n\n// fixed encodeURIComponent which is more conformant to RFC3986:\n// - escapes [!'()*]\n// - preserve commas\nvar encode = function (str) { return encodeURIComponent(str)\n    .replace(encodeReserveRE, encodeReserveReplacer)\n    .replace(commaRE, ','); };\n\nfunction decode (str) {\n  try {\n    return decodeURIComponent(str)\n  } catch (err) {\n    if (process.env.NODE_ENV !== 'production') {\n      warn(false, (\"Error decoding \\\"\" + str + \"\\\". Leaving it intact.\"));\n    }\n  }\n  return str\n}\n\nfunction resolveQuery (\n  query,\n  extraQuery,\n  _parseQuery\n) {\n  if ( extraQuery === void 0 ) extraQuery = {};\n\n  var parse = _parseQuery || parseQuery;\n  var parsedQuery;\n  try {\n    parsedQuery = parse(query || '');\n  } catch (e) {\n    process.env.NODE_ENV !== 'production' && warn(false, e.message);\n    parsedQuery = {};\n  }\n  for (var key in extraQuery) {\n    var value = extraQuery[key];\n    parsedQuery[key] = Array.isArray(value)\n      ? value.map(castQueryParamValue)\n      : castQueryParamValue(value);\n  }\n  return parsedQuery\n}\n\nvar castQueryParamValue = function (value) { return (value == null || typeof value === 'object' ? value : String(value)); };\n\nfunction parseQuery (query) {\n  var res = {};\n\n  query = query.trim().replace(/^(\\?|#|&)/, '');\n\n  if (!query) {\n    return res\n  }\n\n  query.split('&').forEach(function (param) {\n    var parts = param.replace(/\\+/g, ' ').split('=');\n    var key = decode(parts.shift());\n    var val = parts.length > 0 ? decode(parts.join('=')) : null;\n\n    if (res[key] === undefined) {\n      res[key] = val;\n    } else if (Array.isArray(res[key])) {\n      res[key].push(val);\n    } else {\n      res[key] = [res[key], val];\n    }\n  });\n\n  return res\n}\n\nfunction stringifyQuery (obj) {\n  var res = obj\n    ? Object.keys(obj)\n      .map(function (key) {\n        var val = obj[key];\n\n        if (val === undefined) {\n          return ''\n        }\n\n        if (val === null) {\n          return encode(key)\n        }\n\n        if (Array.isArray(val)) {\n          var result = [];\n          val.forEach(function (val2) {\n            if (val2 === undefined) {\n              return\n            }\n            if (val2 === null) {\n              result.push(encode(key));\n            } else {\n              result.push(encode(key) + '=' + encode(val2));\n            }\n          });\n          return result.join('&')\n        }\n\n        return encode(key) + '=' + encode(val)\n      })\n      .filter(function (x) { return x.length > 0; })\n      .join('&')\n    : null;\n  return res ? (\"?\" + res) : ''\n}\n\n/*  */\n\nvar trailingSlashRE = /\\/?$/;\n\nfunction createRoute (\n  record,\n  location,\n  redirectedFrom,\n  router\n) {\n  var stringifyQuery = router && router.options.stringifyQuery;\n\n  var query = location.query || {};\n  try {\n    query = clone(query);\n  } catch (e) {}\n\n  var route = {\n    name: location.name || (record && record.name),\n    meta: (record && record.meta) || {},\n    path: location.path || '/',\n    hash: location.hash || '',\n    query: query,\n    params: location.params || {},\n    fullPath: getFullPath(location, stringifyQuery),\n    matched: record ? formatMatch(record) : []\n  };\n  if (redirectedFrom) {\n    route.redirectedFrom = getFullPath(redirectedFrom, stringifyQuery);\n  }\n  return Object.freeze(route)\n}\n\nfunction clone (value) {\n  if (Array.isArray(value)) {\n    return value.map(clone)\n  } else if (value && typeof value === 'object') {\n    var res = {};\n    for (var key in value) {\n      res[key] = clone(value[key]);\n    }\n    return res\n  } else {\n    return value\n  }\n}\n\n// the starting route that represents the initial state\nvar START = createRoute(null, {\n  path: '/'\n});\n\nfunction formatMatch (record) {\n  var res = [];\n  while (record) {\n    res.unshift(record);\n    record = record.parent;\n  }\n  return res\n}\n\nfunction getFullPath (\n  ref,\n  _stringifyQuery\n) {\n  var path = ref.path;\n  var query = ref.query; if ( query === void 0 ) query = {};\n  var hash = ref.hash; if ( hash === void 0 ) hash = '';\n\n  var stringify = _stringifyQuery || stringifyQuery;\n  return (path || '/') + stringify(query) + hash\n}\n\nfunction isSameRoute (a, b, onlyPath) {\n  if (b === START) {\n    return a === b\n  } else if (!b) {\n    return false\n  } else if (a.path && b.path) {\n    return a.path.replace(trailingSlashRE, '') === b.path.replace(trailingSlashRE, '') && (onlyPath ||\n      a.hash === b.hash &&\n      isObjectEqual(a.query, b.query))\n  } else if (a.name && b.name) {\n    return (\n      a.name === b.name &&\n      (onlyPath || (\n        a.hash === b.hash &&\n      isObjectEqual(a.query, b.query) &&\n      isObjectEqual(a.params, b.params))\n      )\n    )\n  } else {\n    return false\n  }\n}\n\nfunction isObjectEqual (a, b) {\n  if ( a === void 0 ) a = {};\n  if ( b === void 0 ) b = {};\n\n  // handle null value #1566\n  if (!a || !b) { return a === b }\n  var aKeys = Object.keys(a).sort();\n  var bKeys = Object.keys(b).sort();\n  if (aKeys.length !== bKeys.length) {\n    return false\n  }\n  return aKeys.every(function (key, i) {\n    var aVal = a[key];\n    var bKey = bKeys[i];\n    if (bKey !== key) { return false }\n    var bVal = b[key];\n    // query values can be null and undefined\n    if (aVal == null || bVal == null) { return aVal === bVal }\n    // check nested equality\n    if (typeof aVal === 'object' && typeof bVal === 'object') {\n      return isObjectEqual(aVal, bVal)\n    }\n    return String(aVal) === String(bVal)\n  })\n}\n\nfunction isIncludedRoute (current, target) {\n  return (\n    current.path.replace(trailingSlashRE, '/').indexOf(\n      target.path.replace(trailingSlashRE, '/')\n    ) === 0 &&\n    (!target.hash || current.hash === target.hash) &&\n    queryIncludes(current.query, target.query)\n  )\n}\n\nfunction queryIncludes (current, target) {\n  for (var key in target) {\n    if (!(key in current)) {\n      return false\n    }\n  }\n  return true\n}\n\nfunction handleRouteEntered (route) {\n  for (var i = 0; i < route.matched.length; i++) {\n    var record = route.matched[i];\n    for (var name in record.instances) {\n      var instance = record.instances[name];\n      var cbs = record.enteredCbs[name];\n      if (!instance || !cbs) { continue }\n      delete record.enteredCbs[name];\n      for (var i$1 = 0; i$1 < cbs.length; i$1++) {\n        if (!instance._isBeingDestroyed) { cbs[i$1](instance); }\n      }\n    }\n  }\n}\n\nvar View = {\n  name: 'RouterView',\n  functional: true,\n  props: {\n    name: {\n      type: String,\n      default: 'default'\n    }\n  },\n  render: function render (_, ref) {\n    var props = ref.props;\n    var children = ref.children;\n    var parent = ref.parent;\n    var data = ref.data;\n\n    // used by devtools to display a router-view badge\n    data.routerView = true;\n\n    // directly use parent context's createElement() function\n    // so that components rendered by router-view can resolve named slots\n    var h = parent.$createElement;\n    var name = props.name;\n    var route = parent.$route;\n    var cache = parent._routerViewCache || (parent._routerViewCache = {});\n\n    // determine current view depth, also check to see if the tree\n    // has been toggled inactive but kept-alive.\n    var depth = 0;\n    var inactive = false;\n    while (parent && parent._routerRoot !== parent) {\n      var vnodeData = parent.$vnode ? parent.$vnode.data : {};\n      if (vnodeData.routerView) {\n        depth++;\n      }\n      if (vnodeData.keepAlive && parent._directInactive && parent._inactive) {\n        inactive = true;\n      }\n      parent = parent.$parent;\n    }\n    data.routerViewDepth = depth;\n\n    // render previous view if the tree is inactive and kept-alive\n    if (inactive) {\n      var cachedData = cache[name];\n      var cachedComponent = cachedData && cachedData.component;\n      if (cachedComponent) {\n        // #2301\n        // pass props\n        if (cachedData.configProps) {\n          fillPropsinData(cachedComponent, data, cachedData.route, cachedData.configProps);\n        }\n        return h(cachedComponent, data, children)\n      } else {\n        // render previous empty view\n        return h()\n      }\n    }\n\n    var matched = route.matched[depth];\n    var component = matched && matched.components[name];\n\n    // render empty node if no matched route or no config component\n    if (!matched || !component) {\n      cache[name] = null;\n      return h()\n    }\n\n    // cache component\n    cache[name] = { component: component };\n\n    // attach instance registration hook\n    // this will be called in the instance's injected lifecycle hooks\n    data.registerRouteInstance = function (vm, val) {\n      // val could be undefined for unregistration\n      var current = matched.instances[name];\n      if (\n        (val && current !== vm) ||\n        (!val && current === vm)\n      ) {\n        matched.instances[name] = val;\n      }\n    }\n\n    // also register instance in prepatch hook\n    // in case the same component instance is reused across different routes\n    ;(data.hook || (data.hook = {})).prepatch = function (_, vnode) {\n      matched.instances[name] = vnode.componentInstance;\n    };\n\n    // register instance in init hook\n    // in case kept-alive component be actived when routes changed\n    data.hook.init = function (vnode) {\n      if (vnode.data.keepAlive &&\n        vnode.componentInstance &&\n        vnode.componentInstance !== matched.instances[name]\n      ) {\n        matched.instances[name] = vnode.componentInstance;\n      }\n\n      // if the route transition has already been confirmed then we weren't\n      // able to call the cbs during confirmation as the component was not\n      // registered yet, so we call it here.\n      handleRouteEntered(route);\n    };\n\n    var configProps = matched.props && matched.props[name];\n    // save route and configProps in cache\n    if (configProps) {\n      extend(cache[name], {\n        route: route,\n        configProps: configProps\n      });\n      fillPropsinData(component, data, route, configProps);\n    }\n\n    return h(component, data, children)\n  }\n};\n\nfunction fillPropsinData (component, data, route, configProps) {\n  // resolve props\n  var propsToPass = data.props = resolveProps(route, configProps);\n  if (propsToPass) {\n    // clone to prevent mutation\n    propsToPass = data.props = extend({}, propsToPass);\n    // pass non-declared props as attrs\n    var attrs = data.attrs = data.attrs || {};\n    for (var key in propsToPass) {\n      if (!component.props || !(key in component.props)) {\n        attrs[key] = propsToPass[key];\n        delete propsToPass[key];\n      }\n    }\n  }\n}\n\nfunction resolveProps (route, config) {\n  switch (typeof config) {\n    case 'undefined':\n      return\n    case 'object':\n      return config\n    case 'function':\n      return config(route)\n    case 'boolean':\n      return config ? route.params : undefined\n    default:\n      if (process.env.NODE_ENV !== 'production') {\n        warn(\n          false,\n          \"props in \\\"\" + (route.path) + \"\\\" is a \" + (typeof config) + \", \" +\n          \"expecting an object, function or boolean.\"\n        );\n      }\n  }\n}\n\n/*  */\n\nfunction resolvePath (\n  relative,\n  base,\n  append\n) {\n  var firstChar = relative.charAt(0);\n  if (firstChar === '/') {\n    return relative\n  }\n\n  if (firstChar === '?' || firstChar === '#') {\n    return base + relative\n  }\n\n  var stack = base.split('/');\n\n  // remove trailing segment if:\n  // - not appending\n  // - appending to trailing slash (last segment is empty)\n  if (!append || !stack[stack.length - 1]) {\n    stack.pop();\n  }\n\n  // resolve relative path\n  var segments = relative.replace(/^\\//, '').split('/');\n  for (var i = 0; i < segments.length; i++) {\n    var segment = segments[i];\n    if (segment === '..') {\n      stack.pop();\n    } else if (segment !== '.') {\n      stack.push(segment);\n    }\n  }\n\n  // ensure leading slash\n  if (stack[0] !== '') {\n    stack.unshift('');\n  }\n\n  return stack.join('/')\n}\n\nfunction parsePath (path) {\n  var hash = '';\n  var query = '';\n\n  var hashIndex = path.indexOf('#');\n  if (hashIndex >= 0) {\n    hash = path.slice(hashIndex);\n    path = path.slice(0, hashIndex);\n  }\n\n  var queryIndex = path.indexOf('?');\n  if (queryIndex >= 0) {\n    query = path.slice(queryIndex + 1);\n    path = path.slice(0, queryIndex);\n  }\n\n  return {\n    path: path,\n    query: query,\n    hash: hash\n  }\n}\n\nfunction cleanPath (path) {\n  return path.replace(/\\/\\//g, '/')\n}\n\nvar isarray = Array.isArray || function (arr) {\n  return Object.prototype.toString.call(arr) == '[object Array]';\n};\n\n/**\n * Expose `pathToRegexp`.\n */\nvar pathToRegexp_1 = pathToRegexp;\nvar parse_1 = parse;\nvar compile_1 = compile;\nvar tokensToFunction_1 = tokensToFunction;\nvar tokensToRegExp_1 = tokensToRegExp;\n\n/**\n * The main path matching regexp utility.\n *\n * @type {RegExp}\n */\nvar PATH_REGEXP = new RegExp([\n  // Match escaped characters that would otherwise appear in future matches.\n  // This allows the user to escape special characters that won't transform.\n  '(\\\\\\\\.)',\n  // Match Express-style parameters and un-named parameters with a prefix\n  // and optional suffixes. Matches appear as:\n  //\n  // \"/:test(\\\\d+)?\" => [\"/\", \"test\", \"\\d+\", undefined, \"?\", undefined]\n  // \"/route(\\\\d+)\"  => [undefined, undefined, undefined, \"\\d+\", undefined, undefined]\n  // \"/*\"            => [\"/\", undefined, undefined, undefined, undefined, \"*\"]\n  '([\\\\/.])?(?:(?:\\\\:(\\\\w+)(?:\\\\(((?:\\\\\\\\.|[^\\\\\\\\()])+)\\\\))?|\\\\(((?:\\\\\\\\.|[^\\\\\\\\()])+)\\\\))([+*?])?|(\\\\*))'\n].join('|'), 'g');\n\n/**\n * Parse a string for the raw tokens.\n *\n * @param  {string}  str\n * @param  {Object=} options\n * @return {!Array}\n */\nfunction parse (str, options) {\n  var tokens = [];\n  var key = 0;\n  var index = 0;\n  var path = '';\n  var defaultDelimiter = options && options.delimiter || '/';\n  var res;\n\n  while ((res = PATH_REGEXP.exec(str)) != null) {\n    var m = res[0];\n    var escaped = res[1];\n    var offset = res.index;\n    path += str.slice(index, offset);\n    index = offset + m.length;\n\n    // Ignore already escaped sequences.\n    if (escaped) {\n      path += escaped[1];\n      continue\n    }\n\n    var next = str[index];\n    var prefix = res[2];\n    var name = res[3];\n    var capture = res[4];\n    var group = res[5];\n    var modifier = res[6];\n    var asterisk = res[7];\n\n    // Push the current path onto the tokens.\n    if (path) {\n      tokens.push(path);\n      path = '';\n    }\n\n    var partial = prefix != null && next != null && next !== prefix;\n    var repeat = modifier === '+' || modifier === '*';\n    var optional = modifier === '?' || modifier === '*';\n    var delimiter = res[2] || defaultDelimiter;\n    var pattern = capture || group;\n\n    tokens.push({\n      name: name || key++,\n      prefix: prefix || '',\n      delimiter: delimiter,\n      optional: optional,\n      repeat: repeat,\n      partial: partial,\n      asterisk: !!asterisk,\n      pattern: pattern ? escapeGroup(pattern) : (asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?')\n    });\n  }\n\n  // Match any characters still remaining.\n  if (index < str.length) {\n    path += str.substr(index);\n  }\n\n  // If the path exists, push it onto the end.\n  if (path) {\n    tokens.push(path);\n  }\n\n  return tokens\n}\n\n/**\n * Compile a string to a template function for the path.\n *\n * @param  {string}             str\n * @param  {Object=}            options\n * @return {!function(Object=, Object=)}\n */\nfunction compile (str, options) {\n  return tokensToFunction(parse(str, options), options)\n}\n\n/**\n * Prettier encoding of URI path segments.\n *\n * @param  {string}\n * @return {string}\n */\nfunction encodeURIComponentPretty (str) {\n  return encodeURI(str).replace(/[\\/?#]/g, function (c) {\n    return '%' + c.charCodeAt(0).toString(16).toUpperCase()\n  })\n}\n\n/**\n * Encode the asterisk parameter. Similar to `pretty`, but allows slashes.\n *\n * @param  {string}\n * @return {string}\n */\nfunction encodeAsterisk (str) {\n  return encodeURI(str).replace(/[?#]/g, function (c) {\n    return '%' + c.charCodeAt(0).toString(16).toUpperCase()\n  })\n}\n\n/**\n * Expose a method for transforming tokens into the path function.\n */\nfunction tokensToFunction (tokens, options) {\n  // Compile all the tokens into regexps.\n  var matches = new Array(tokens.length);\n\n  // Compile all the patterns before compilation.\n  for (var i = 0; i < tokens.length; i++) {\n    if (typeof tokens[i] === 'object') {\n      matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$', flags(options));\n    }\n  }\n\n  return function (obj, opts) {\n    var path = '';\n    var data = obj || {};\n    var options = opts || {};\n    var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent;\n\n    for (var i = 0; i < tokens.length; i++) {\n      var token = tokens[i];\n\n      if (typeof token === 'string') {\n        path += token;\n\n        continue\n      }\n\n      var value = data[token.name];\n      var segment;\n\n      if (value == null) {\n        if (token.optional) {\n          // Prepend partial segment prefixes.\n          if (token.partial) {\n            path += token.prefix;\n          }\n\n          continue\n        } else {\n          throw new TypeError('Expected \"' + token.name + '\" to be defined')\n        }\n      }\n\n      if (isarray(value)) {\n        if (!token.repeat) {\n          throw new TypeError('Expected \"' + token.name + '\" to not repeat, but received `' + JSON.stringify(value) + '`')\n        }\n\n        if (value.length === 0) {\n          if (token.optional) {\n            continue\n          } else {\n            throw new TypeError('Expected \"' + token.name + '\" to not be empty')\n          }\n        }\n\n        for (var j = 0; j < value.length; j++) {\n          segment = encode(value[j]);\n\n          if (!matches[i].test(segment)) {\n            throw new TypeError('Expected all \"' + token.name + '\" to match \"' + token.pattern + '\", but received `' + JSON.stringify(segment) + '`')\n          }\n\n          path += (j === 0 ? token.prefix : token.delimiter) + segment;\n        }\n\n        continue\n      }\n\n      segment = token.asterisk ? encodeAsterisk(value) : encode(value);\n\n      if (!matches[i].test(segment)) {\n        throw new TypeError('Expected \"' + token.name + '\" to match \"' + token.pattern + '\", but received \"' + segment + '\"')\n      }\n\n      path += token.prefix + segment;\n    }\n\n    return path\n  }\n}\n\n/**\n * Escape a regular expression string.\n *\n * @param  {string} str\n * @return {string}\n */\nfunction escapeString (str) {\n  return str.replace(/([.+*?=^!:${}()[\\]|\\/\\\\])/g, '\\\\$1')\n}\n\n/**\n * Escape the capturing group by escaping special characters and meaning.\n *\n * @param  {string} group\n * @return {string}\n */\nfunction escapeGroup (group) {\n  return group.replace(/([=!:$\\/()])/g, '\\\\$1')\n}\n\n/**\n * Attach the keys as a property of the regexp.\n *\n * @param  {!RegExp} re\n * @param  {Array}   keys\n * @return {!RegExp}\n */\nfunction attachKeys (re, keys) {\n  re.keys = keys;\n  return re\n}\n\n/**\n * Get the flags for a regexp from the options.\n *\n * @param  {Object} options\n * @return {string}\n */\nfunction flags (options) {\n  return options && options.sensitive ? '' : 'i'\n}\n\n/**\n * Pull out keys from a regexp.\n *\n * @param  {!RegExp} path\n * @param  {!Array}  keys\n * @return {!RegExp}\n */\nfunction regexpToRegexp (path, keys) {\n  // Use a negative lookahead to match only capturing groups.\n  var groups = path.source.match(/\\((?!\\?)/g);\n\n  if (groups) {\n    for (var i = 0; i < groups.length; i++) {\n      keys.push({\n        name: i,\n        prefix: null,\n        delimiter: null,\n        optional: false,\n        repeat: false,\n        partial: false,\n        asterisk: false,\n        pattern: null\n      });\n    }\n  }\n\n  return attachKeys(path, keys)\n}\n\n/**\n * Transform an array into a regexp.\n *\n * @param  {!Array}  path\n * @param  {Array}   keys\n * @param  {!Object} options\n * @return {!RegExp}\n */\nfunction arrayToRegexp (path, keys, options) {\n  var parts = [];\n\n  for (var i = 0; i < path.length; i++) {\n    parts.push(pathToRegexp(path[i], keys, options).source);\n  }\n\n  var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options));\n\n  return attachKeys(regexp, keys)\n}\n\n/**\n * Create a path regexp from string input.\n *\n * @param  {string}  path\n * @param  {!Array}  keys\n * @param  {!Object} options\n * @return {!RegExp}\n */\nfunction stringToRegexp (path, keys, options) {\n  return tokensToRegExp(parse(path, options), keys, options)\n}\n\n/**\n * Expose a function for taking tokens and returning a RegExp.\n *\n * @param  {!Array}          tokens\n * @param  {(Array|Object)=} keys\n * @param  {Object=}         options\n * @return {!RegExp}\n */\nfunction tokensToRegExp (tokens, keys, options) {\n  if (!isarray(keys)) {\n    options = /** @type {!Object} */ (keys || options);\n    keys = [];\n  }\n\n  options = options || {};\n\n  var strict = options.strict;\n  var end = options.end !== false;\n  var route = '';\n\n  // Iterate over the tokens and create our regexp string.\n  for (var i = 0; i < tokens.length; i++) {\n    var token = tokens[i];\n\n    if (typeof token === 'string') {\n      route += escapeString(token);\n    } else {\n      var prefix = escapeString(token.prefix);\n      var capture = '(?:' + token.pattern + ')';\n\n      keys.push(token);\n\n      if (token.repeat) {\n        capture += '(?:' + prefix + capture + ')*';\n      }\n\n      if (token.optional) {\n        if (!token.partial) {\n          capture = '(?:' + prefix + '(' + capture + '))?';\n        } else {\n          capture = prefix + '(' + capture + ')?';\n        }\n      } else {\n        capture = prefix + '(' + capture + ')';\n      }\n\n      route += capture;\n    }\n  }\n\n  var delimiter = escapeString(options.delimiter || '/');\n  var endsWithDelimiter = route.slice(-delimiter.length) === delimiter;\n\n  // In non-strict mode we allow a slash at the end of match. If the path to\n  // match already ends with a slash, we remove it for consistency. The slash\n  // is valid at the end of a path match, not in the middle. This is important\n  // in non-ending mode, where \"/test/\" shouldn't match \"/test//route\".\n  if (!strict) {\n    route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?';\n  }\n\n  if (end) {\n    route += '$';\n  } else {\n    // In non-ending mode, we need the capturing groups to match as much as\n    // possible by using a positive lookahead to the end or next path segment.\n    route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)';\n  }\n\n  return attachKeys(new RegExp('^' + route, flags(options)), keys)\n}\n\n/**\n * Normalize the given path string, returning a regular expression.\n *\n * An empty array can be passed in for the keys, which will hold the\n * placeholder key descriptions. For example, using `/user/:id`, `keys` will\n * contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.\n *\n * @param  {(string|RegExp|Array)} path\n * @param  {(Array|Object)=}       keys\n * @param  {Object=}               options\n * @return {!RegExp}\n */\nfunction pathToRegexp (path, keys, options) {\n  if (!isarray(keys)) {\n    options = /** @type {!Object} */ (keys || options);\n    keys = [];\n  }\n\n  options = options || {};\n\n  if (path instanceof RegExp) {\n    return regexpToRegexp(path, /** @type {!Array} */ (keys))\n  }\n\n  if (isarray(path)) {\n    return arrayToRegexp(/** @type {!Array} */ (path), /** @type {!Array} */ (keys), options)\n  }\n\n  return stringToRegexp(/** @type {string} */ (path), /** @type {!Array} */ (keys), options)\n}\npathToRegexp_1.parse = parse_1;\npathToRegexp_1.compile = compile_1;\npathToRegexp_1.tokensToFunction = tokensToFunction_1;\npathToRegexp_1.tokensToRegExp = tokensToRegExp_1;\n\n/*  */\n\n// $flow-disable-line\nvar regexpCompileCache = Object.create(null);\n\nfunction fillParams (\n  path,\n  params,\n  routeMsg\n) {\n  params = params || {};\n  try {\n    var filler =\n      regexpCompileCache[path] ||\n      (regexpCompileCache[path] = pathToRegexp_1.compile(path));\n\n    // Fix #2505 resolving asterisk routes { name: 'not-found', params: { pathMatch: '/not-found' }}\n    // and fix #3106 so that you can work with location descriptor object having params.pathMatch equal to empty string\n    if (typeof params.pathMatch === 'string') { params[0] = params.pathMatch; }\n\n    return filler(params, { pretty: true })\n  } catch (e) {\n    if (process.env.NODE_ENV !== 'production') {\n      // Fix #3072 no warn if `pathMatch` is string\n      warn(typeof params.pathMatch === 'string', (\"missing param for \" + routeMsg + \": \" + (e.message)));\n    }\n    return ''\n  } finally {\n    // delete the 0 if it was added\n    delete params[0];\n  }\n}\n\n/*  */\n\nfunction normalizeLocation (\n  raw,\n  current,\n  append,\n  router\n) {\n  var next = typeof raw === 'string' ? { path: raw } : raw;\n  // named target\n  if (next._normalized) {\n    return next\n  } else if (next.name) {\n    next = extend({}, raw);\n    var params = next.params;\n    if (params && typeof params === 'object') {\n      next.params = extend({}, params);\n    }\n    return next\n  }\n\n  // relative params\n  if (!next.path && next.params && current) {\n    next = extend({}, next);\n    next._normalized = true;\n    var params$1 = extend(extend({}, current.params), next.params);\n    if (current.name) {\n      next.name = current.name;\n      next.params = params$1;\n    } else if (current.matched.length) {\n      var rawPath = current.matched[current.matched.length - 1].path;\n      next.path = fillParams(rawPath, params$1, (\"path \" + (current.path)));\n    } else if (process.env.NODE_ENV !== 'production') {\n      warn(false, \"relative params navigation requires a current route.\");\n    }\n    return next\n  }\n\n  var parsedPath = parsePath(next.path || '');\n  var basePath = (current && current.path) || '/';\n  var path = parsedPath.path\n    ? resolvePath(parsedPath.path, basePath, append || next.append)\n    : basePath;\n\n  var query = resolveQuery(\n    parsedPath.query,\n    next.query,\n    router && router.options.parseQuery\n  );\n\n  var hash = next.hash || parsedPath.hash;\n  if (hash && hash.charAt(0) !== '#') {\n    hash = \"#\" + hash;\n  }\n\n  return {\n    _normalized: true,\n    path: path,\n    query: query,\n    hash: hash\n  }\n}\n\n/*  */\n\n// work around weird flow bug\nvar toTypes = [String, Object];\nvar eventTypes = [String, Array];\n\nvar noop = function () {};\n\nvar warnedCustomSlot;\nvar warnedTagProp;\nvar warnedEventProp;\n\nvar Link = {\n  name: 'RouterLink',\n  props: {\n    to: {\n      type: toTypes,\n      required: true\n    },\n    tag: {\n      type: String,\n      default: 'a'\n    },\n    custom: Boolean,\n    exact: Boolean,\n    exactPath: Boolean,\n    append: Boolean,\n    replace: Boolean,\n    activeClass: String,\n    exactActiveClass: String,\n    ariaCurrentValue: {\n      type: String,\n      default: 'page'\n    },\n    event: {\n      type: eventTypes,\n      default: 'click'\n    }\n  },\n  render: function render (h) {\n    var this$1 = this;\n\n    var router = this.$router;\n    var current = this.$route;\n    var ref = router.resolve(\n      this.to,\n      current,\n      this.append\n    );\n    var location = ref.location;\n    var route = ref.route;\n    var href = ref.href;\n\n    var classes = {};\n    var globalActiveClass = router.options.linkActiveClass;\n    var globalExactActiveClass = router.options.linkExactActiveClass;\n    // Support global empty active class\n    var activeClassFallback =\n      globalActiveClass == null ? 'router-link-active' : globalActiveClass;\n    var exactActiveClassFallback =\n      globalExactActiveClass == null\n        ? 'router-link-exact-active'\n        : globalExactActiveClass;\n    var activeClass =\n      this.activeClass == null ? activeClassFallback : this.activeClass;\n    var exactActiveClass =\n      this.exactActiveClass == null\n        ? exactActiveClassFallback\n        : this.exactActiveClass;\n\n    var compareTarget = route.redirectedFrom\n      ? createRoute(null, normalizeLocation(route.redirectedFrom), null, router)\n      : route;\n\n    classes[exactActiveClass] = isSameRoute(current, compareTarget, this.exactPath);\n    classes[activeClass] = this.exact || this.exactPath\n      ? classes[exactActiveClass]\n      : isIncludedRoute(current, compareTarget);\n\n    var ariaCurrentValue = classes[exactActiveClass] ? this.ariaCurrentValue : null;\n\n    var handler = function (e) {\n      if (guardEvent(e)) {\n        if (this$1.replace) {\n          router.replace(location, noop);\n        } else {\n          router.push(location, noop);\n        }\n      }\n    };\n\n    var on = { click: guardEvent };\n    if (Array.isArray(this.event)) {\n      this.event.forEach(function (e) {\n        on[e] = handler;\n      });\n    } else {\n      on[this.event] = handler;\n    }\n\n    var data = { class: classes };\n\n    var scopedSlot =\n      !this.$scopedSlots.$hasNormal &&\n      this.$scopedSlots.default &&\n      this.$scopedSlots.default({\n        href: href,\n        route: route,\n        navigate: handler,\n        isActive: classes[activeClass],\n        isExactActive: classes[exactActiveClass]\n      });\n\n    if (scopedSlot) {\n      if (process.env.NODE_ENV !== 'production' && !this.custom) {\n        !warnedCustomSlot && warn(false, 'In Vue Router 4, the v-slot API will by default wrap its content with an <a> element. Use the custom prop to remove this warning:\\n<router-link v-slot=\"{ navigate, href }\" custom></router-link>\\n');\n        warnedCustomSlot = true;\n      }\n      if (scopedSlot.length === 1) {\n        return scopedSlot[0]\n      } else if (scopedSlot.length > 1 || !scopedSlot.length) {\n        if (process.env.NODE_ENV !== 'production') {\n          warn(\n            false,\n            (\"<router-link> with to=\\\"\" + (this.to) + \"\\\" is trying to use a scoped slot but it didn't provide exactly one child. Wrapping the content with a span element.\")\n          );\n        }\n        return scopedSlot.length === 0 ? h() : h('span', {}, scopedSlot)\n      }\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if ('tag' in this.$options.propsData && !warnedTagProp) {\n        warn(\n          false,\n          \"<router-link>'s tag prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.\"\n        );\n        warnedTagProp = true;\n      }\n      if ('event' in this.$options.propsData && !warnedEventProp) {\n        warn(\n          false,\n          \"<router-link>'s event prop is deprecated and has been removed in Vue Router 4. Use the v-slot API to remove this warning: https://next.router.vuejs.org/guide/migration/#removal-of-event-and-tag-props-in-router-link.\"\n        );\n        warnedEventProp = true;\n      }\n    }\n\n    if (this.tag === 'a') {\n      data.on = on;\n      data.attrs = { href: href, 'aria-current': ariaCurrentValue };\n    } else {\n      // find the first <a> child and apply listener and href\n      var a = findAnchor(this.$slots.default);\n      if (a) {\n        // in case the <a> is a static node\n        a.isStatic = false;\n        var aData = (a.data = extend({}, a.data));\n        aData.on = aData.on || {};\n        // transform existing events in both objects into arrays so we can push later\n        for (var event in aData.on) {\n          var handler$1 = aData.on[event];\n          if (event in on) {\n            aData.on[event] = Array.isArray(handler$1) ? handler$1 : [handler$1];\n          }\n        }\n        // append new listeners for router-link\n        for (var event$1 in on) {\n          if (event$1 in aData.on) {\n            // on[event] is always a function\n            aData.on[event$1].push(on[event$1]);\n          } else {\n            aData.on[event$1] = handler;\n          }\n        }\n\n        var aAttrs = (a.data.attrs = extend({}, a.data.attrs));\n        aAttrs.href = href;\n        aAttrs['aria-current'] = ariaCurrentValue;\n      } else {\n        // doesn't have <a> child, apply listener to self\n        data.on = on;\n      }\n    }\n\n    return h(this.tag, data, this.$slots.default)\n  }\n};\n\nfunction guardEvent (e) {\n  // don't redirect with control keys\n  if (e.metaKey || e.altKey || e.ctrlKey || e.shiftKey) { return }\n  // don't redirect when preventDefault called\n  if (e.defaultPrevented) { return }\n  // don't redirect on right click\n  if (e.button !== undefined && e.button !== 0) { return }\n  // don't redirect if `target=\"_blank\"`\n  if (e.currentTarget && e.currentTarget.getAttribute) {\n    var target = e.currentTarget.getAttribute('target');\n    if (/\\b_blank\\b/i.test(target)) { return }\n  }\n  // this may be a Weex event which doesn't have this method\n  if (e.preventDefault) {\n    e.preventDefault();\n  }\n  return true\n}\n\nfunction findAnchor (children) {\n  if (children) {\n    var child;\n    for (var i = 0; i < children.length; i++) {\n      child = children[i];\n      if (child.tag === 'a') {\n        return child\n      }\n      if (child.children && (child = findAnchor(child.children))) {\n        return child\n      }\n    }\n  }\n}\n\nvar _Vue;\n\nfunction install (Vue) {\n  if (install.installed && _Vue === Vue) { return }\n  install.installed = true;\n\n  _Vue = Vue;\n\n  var isDef = function (v) { return v !== undefined; };\n\n  var registerInstance = function (vm, callVal) {\n    var i = vm.$options._parentVnode;\n    if (isDef(i) && isDef(i = i.data) && isDef(i = i.registerRouteInstance)) {\n      i(vm, callVal);\n    }\n  };\n\n  Vue.mixin({\n    beforeCreate: function beforeCreate () {\n      if (isDef(this.$options.router)) {\n        this._routerRoot = this;\n        this._router = this.$options.router;\n        this._router.init(this);\n        Vue.util.defineReactive(this, '_route', this._router.history.current);\n      } else {\n        this._routerRoot = (this.$parent && this.$parent._routerRoot) || this;\n      }\n      registerInstance(this, this);\n    },\n    destroyed: function destroyed () {\n      registerInstance(this);\n    }\n  });\n\n  Object.defineProperty(Vue.prototype, '$router', {\n    get: function get () { return this._routerRoot._router }\n  });\n\n  Object.defineProperty(Vue.prototype, '$route', {\n    get: function get () { return this._routerRoot._route }\n  });\n\n  Vue.component('RouterView', View);\n  Vue.component('RouterLink', Link);\n\n  var strats = Vue.config.optionMergeStrategies;\n  // use the same hook merging strategy for route hooks\n  strats.beforeRouteEnter = strats.beforeRouteLeave = strats.beforeRouteUpdate = strats.created;\n}\n\n/*  */\n\nvar inBrowser = typeof window !== 'undefined';\n\n/*  */\n\nfunction createRouteMap (\n  routes,\n  oldPathList,\n  oldPathMap,\n  oldNameMap,\n  parentRoute\n) {\n  // the path list is used to control path matching priority\n  var pathList = oldPathList || [];\n  // $flow-disable-line\n  var pathMap = oldPathMap || Object.create(null);\n  // $flow-disable-line\n  var nameMap = oldNameMap || Object.create(null);\n\n  routes.forEach(function (route) {\n    addRouteRecord(pathList, pathMap, nameMap, route, parentRoute);\n  });\n\n  // ensure wildcard routes are always at the end\n  for (var i = 0, l = pathList.length; i < l; i++) {\n    if (pathList[i] === '*') {\n      pathList.push(pathList.splice(i, 1)[0]);\n      l--;\n      i--;\n    }\n  }\n\n  if (process.env.NODE_ENV === 'development') {\n    // warn if routes do not include leading slashes\n    var found = pathList\n    // check for missing leading slash\n      .filter(function (path) { return path && path.charAt(0) !== '*' && path.charAt(0) !== '/'; });\n\n    if (found.length > 0) {\n      var pathNames = found.map(function (path) { return (\"- \" + path); }).join('\\n');\n      warn(false, (\"Non-nested routes must include a leading slash character. Fix the following routes: \\n\" + pathNames));\n    }\n  }\n\n  return {\n    pathList: pathList,\n    pathMap: pathMap,\n    nameMap: nameMap\n  }\n}\n\nfunction addRouteRecord (\n  pathList,\n  pathMap,\n  nameMap,\n  route,\n  parent,\n  matchAs\n) {\n  var path = route.path;\n  var name = route.name;\n  if (process.env.NODE_ENV !== 'production') {\n    assert(path != null, \"\\\"path\\\" is required in a route configuration.\");\n    assert(\n      typeof route.component !== 'string',\n      \"route config \\\"component\\\" for path: \" + (String(\n        path || name\n      )) + \" cannot be a \" + \"string id. Use an actual component instead.\"\n    );\n\n    warn(\n      // eslint-disable-next-line no-control-regex\n      !/[^\\u0000-\\u007F]+/.test(path),\n      \"Route with path \\\"\" + path + \"\\\" contains unencoded characters, make sure \" +\n        \"your path is correctly encoded before passing it to the router. Use \" +\n        \"encodeURI to encode static segments of your path.\"\n    );\n  }\n\n  var pathToRegexpOptions =\n    route.pathToRegexpOptions || {};\n  var normalizedPath = normalizePath(path, parent, pathToRegexpOptions.strict);\n\n  if (typeof route.caseSensitive === 'boolean') {\n    pathToRegexpOptions.sensitive = route.caseSensitive;\n  }\n\n  var record = {\n    path: normalizedPath,\n    regex: compileRouteRegex(normalizedPath, pathToRegexpOptions),\n    components: route.components || { default: route.component },\n    alias: route.alias\n      ? typeof route.alias === 'string'\n        ? [route.alias]\n        : route.alias\n      : [],\n    instances: {},\n    enteredCbs: {},\n    name: name,\n    parent: parent,\n    matchAs: matchAs,\n    redirect: route.redirect,\n    beforeEnter: route.beforeEnter,\n    meta: route.meta || {},\n    props:\n      route.props == null\n        ? {}\n        : route.components\n          ? route.props\n          : { default: route.props }\n  };\n\n  if (route.children) {\n    // Warn if route is named, does not redirect and has a default child route.\n    // If users navigate to this route by name, the default child will\n    // not be rendered (GH Issue #629)\n    if (process.env.NODE_ENV !== 'production') {\n      if (\n        route.name &&\n        !route.redirect &&\n        route.children.some(function (child) { return /^\\/?$/.test(child.path); })\n      ) {\n        warn(\n          false,\n          \"Named Route '\" + (route.name) + \"' has a default child route. \" +\n            \"When navigating to this named route (:to=\\\"{name: '\" + (route.name) + \"'\\\"), \" +\n            \"the default child route will not be rendered. Remove the name from \" +\n            \"this route and use the name of the default child route for named \" +\n            \"links instead.\"\n        );\n      }\n    }\n    route.children.forEach(function (child) {\n      var childMatchAs = matchAs\n        ? cleanPath((matchAs + \"/\" + (child.path)))\n        : undefined;\n      addRouteRecord(pathList, pathMap, nameMap, child, record, childMatchAs);\n    });\n  }\n\n  if (!pathMap[record.path]) {\n    pathList.push(record.path);\n    pathMap[record.path] = record;\n  }\n\n  if (route.alias !== undefined) {\n    var aliases = Array.isArray(route.alias) ? route.alias : [route.alias];\n    for (var i = 0; i < aliases.length; ++i) {\n      var alias = aliases[i];\n      if (process.env.NODE_ENV !== 'production' && alias === path) {\n        warn(\n          false,\n          (\"Found an alias with the same value as the path: \\\"\" + path + \"\\\". You have to remove that alias. It will be ignored in development.\")\n        );\n        // skip in dev to make it work\n        continue\n      }\n\n      var aliasRoute = {\n        path: alias,\n        children: route.children\n      };\n      addRouteRecord(\n        pathList,\n        pathMap,\n        nameMap,\n        aliasRoute,\n        parent,\n        record.path || '/' // matchAs\n      );\n    }\n  }\n\n  if (name) {\n    if (!nameMap[name]) {\n      nameMap[name] = record;\n    } else if (process.env.NODE_ENV !== 'production' && !matchAs) {\n      warn(\n        false,\n        \"Duplicate named routes definition: \" +\n          \"{ name: \\\"\" + name + \"\\\", path: \\\"\" + (record.path) + \"\\\" }\"\n      );\n    }\n  }\n}\n\nfunction compileRouteRegex (\n  path,\n  pathToRegexpOptions\n) {\n  var regex = pathToRegexp_1(path, [], pathToRegexpOptions);\n  if (process.env.NODE_ENV !== 'production') {\n    var keys = Object.create(null);\n    regex.keys.forEach(function (key) {\n      warn(\n        !keys[key.name],\n        (\"Duplicate param keys in route with path: \\\"\" + path + \"\\\"\")\n      );\n      keys[key.name] = true;\n    });\n  }\n  return regex\n}\n\nfunction normalizePath (\n  path,\n  parent,\n  strict\n) {\n  if (!strict) { path = path.replace(/\\/$/, ''); }\n  if (path[0] === '/') { return path }\n  if (parent == null) { return path }\n  return cleanPath(((parent.path) + \"/\" + path))\n}\n\n/*  */\n\n\n\nfunction createMatcher (\n  routes,\n  router\n) {\n  var ref = createRouteMap(routes);\n  var pathList = ref.pathList;\n  var pathMap = ref.pathMap;\n  var nameMap = ref.nameMap;\n\n  function addRoutes (routes) {\n    createRouteMap(routes, pathList, pathMap, nameMap);\n  }\n\n  function addRoute (parentOrRoute, route) {\n    var parent = (typeof parentOrRoute !== 'object') ? nameMap[parentOrRoute] : undefined;\n    // $flow-disable-line\n    createRouteMap([route || parentOrRoute], pathList, pathMap, nameMap, parent);\n\n    // add aliases of parent\n    if (parent) {\n      createRouteMap(\n        // $flow-disable-line route is defined if parent is\n        parent.alias.map(function (alias) { return ({ path: alias, children: [route] }); }),\n        pathList,\n        pathMap,\n        nameMap,\n        parent\n      );\n    }\n  }\n\n  function getRoutes () {\n    return pathList.map(function (path) { return pathMap[path]; })\n  }\n\n  function match (\n    raw,\n    currentRoute,\n    redirectedFrom\n  ) {\n    var location = normalizeLocation(raw, currentRoute, false, router);\n    var name = location.name;\n\n    if (name) {\n      var record = nameMap[name];\n      if (process.env.NODE_ENV !== 'production') {\n        warn(record, (\"Route with name '\" + name + \"' does not exist\"));\n      }\n      if (!record) { return _createRoute(null, location) }\n      var paramNames = record.regex.keys\n        .filter(function (key) { return !key.optional; })\n        .map(function (key) { return key.name; });\n\n      if (typeof location.params !== 'object') {\n        location.params = {};\n      }\n\n      if (currentRoute && typeof currentRoute.params === 'object') {\n        for (var key in currentRoute.params) {\n          if (!(key in location.params) && paramNames.indexOf(key) > -1) {\n            location.params[key] = currentRoute.params[key];\n          }\n        }\n      }\n\n      location.path = fillParams(record.path, location.params, (\"named route \\\"\" + name + \"\\\"\"));\n      return _createRoute(record, location, redirectedFrom)\n    } else if (location.path) {\n      location.params = {};\n      for (var i = 0; i < pathList.length; i++) {\n        var path = pathList[i];\n        var record$1 = pathMap[path];\n        if (matchRoute(record$1.regex, location.path, location.params)) {\n          return _createRoute(record$1, location, redirectedFrom)\n        }\n      }\n    }\n    // no match\n    return _createRoute(null, location)\n  }\n\n  function redirect (\n    record,\n    location\n  ) {\n    var originalRedirect = record.redirect;\n    var redirect = typeof originalRedirect === 'function'\n      ? originalRedirect(createRoute(record, location, null, router))\n      : originalRedirect;\n\n    if (typeof redirect === 'string') {\n      redirect = { path: redirect };\n    }\n\n    if (!redirect || typeof redirect !== 'object') {\n      if (process.env.NODE_ENV !== 'production') {\n        warn(\n          false, (\"invalid redirect option: \" + (JSON.stringify(redirect)))\n        );\n      }\n      return _createRoute(null, location)\n    }\n\n    var re = redirect;\n    var name = re.name;\n    var path = re.path;\n    var query = location.query;\n    var hash = location.hash;\n    var params = location.params;\n    query = re.hasOwnProperty('query') ? re.query : query;\n    hash = re.hasOwnProperty('hash') ? re.hash : hash;\n    params = re.hasOwnProperty('params') ? re.params : params;\n\n    if (name) {\n      // resolved named direct\n      var targetRecord = nameMap[name];\n      if (process.env.NODE_ENV !== 'production') {\n        assert(targetRecord, (\"redirect failed: named route \\\"\" + name + \"\\\" not found.\"));\n      }\n      return match({\n        _normalized: true,\n        name: name,\n        query: query,\n        hash: hash,\n        params: params\n      }, undefined, location)\n    } else if (path) {\n      // 1. resolve relative redirect\n      var rawPath = resolveRecordPath(path, record);\n      // 2. resolve params\n      var resolvedPath = fillParams(rawPath, params, (\"redirect route with path \\\"\" + rawPath + \"\\\"\"));\n      // 3. rematch with existing query and hash\n      return match({\n        _normalized: true,\n        path: resolvedPath,\n        query: query,\n        hash: hash\n      }, undefined, location)\n    } else {\n      if (process.env.NODE_ENV !== 'production') {\n        warn(false, (\"invalid redirect option: \" + (JSON.stringify(redirect))));\n      }\n      return _createRoute(null, location)\n    }\n  }\n\n  function alias (\n    record,\n    location,\n    matchAs\n  ) {\n    var aliasedPath = fillParams(matchAs, location.params, (\"aliased route with path \\\"\" + matchAs + \"\\\"\"));\n    var aliasedMatch = match({\n      _normalized: true,\n      path: aliasedPath\n    });\n    if (aliasedMatch) {\n      var matched = aliasedMatch.matched;\n      var aliasedRecord = matched[matched.length - 1];\n      location.params = aliasedMatch.params;\n      return _createRoute(aliasedRecord, location)\n    }\n    return _createRoute(null, location)\n  }\n\n  function _createRoute (\n    record,\n    location,\n    redirectedFrom\n  ) {\n    if (record && record.redirect) {\n      return redirect(record, redirectedFrom || location)\n    }\n    if (record && record.matchAs) {\n      return alias(record, location, record.matchAs)\n    }\n    return createRoute(record, location, redirectedFrom, router)\n  }\n\n  return {\n    match: match,\n    addRoute: addRoute,\n    getRoutes: getRoutes,\n    addRoutes: addRoutes\n  }\n}\n\nfunction matchRoute (\n  regex,\n  path,\n  params\n) {\n  var m = path.match(regex);\n\n  if (!m) {\n    return false\n  } else if (!params) {\n    return true\n  }\n\n  for (var i = 1, len = m.length; i < len; ++i) {\n    var key = regex.keys[i - 1];\n    if (key) {\n      // Fix #1994: using * with props: true generates a param named 0\n      params[key.name || 'pathMatch'] = typeof m[i] === 'string' ? decode(m[i]) : m[i];\n    }\n  }\n\n  return true\n}\n\nfunction resolveRecordPath (path, record) {\n  return resolvePath(path, record.parent ? record.parent.path : '/', true)\n}\n\n/*  */\n\n// use User Timing api (if present) for more accurate key precision\nvar Time =\n  inBrowser && window.performance && window.performance.now\n    ? window.performance\n    : Date;\n\nfunction genStateKey () {\n  return Time.now().toFixed(3)\n}\n\nvar _key = genStateKey();\n\nfunction getStateKey () {\n  return _key\n}\n\nfunction setStateKey (key) {\n  return (_key = key)\n}\n\n/*  */\n\nvar positionStore = Object.create(null);\n\nfunction setupScroll () {\n  // Prevent browser scroll behavior on History popstate\n  if ('scrollRestoration' in window.history) {\n    window.history.scrollRestoration = 'manual';\n  }\n  // Fix for #1585 for Firefox\n  // Fix for #2195 Add optional third attribute to workaround a bug in safari https://bugs.webkit.org/show_bug.cgi?id=182678\n  // Fix for #2774 Support for apps loaded from Windows file shares not mapped to network drives: replaced location.origin with\n  // window.location.protocol + '//' + window.location.host\n  // location.host contains the port and location.hostname doesn't\n  var protocolAndPath = window.location.protocol + '//' + window.location.host;\n  var absolutePath = window.location.href.replace(protocolAndPath, '');\n  // preserve existing history state as it could be overriden by the user\n  var stateCopy = extend({}, window.history.state);\n  stateCopy.key = getStateKey();\n  window.history.replaceState(stateCopy, '', absolutePath);\n  window.addEventListener('popstate', handlePopState);\n  return function () {\n    window.removeEventListener('popstate', handlePopState);\n  }\n}\n\nfunction handleScroll (\n  router,\n  to,\n  from,\n  isPop\n) {\n  if (!router.app) {\n    return\n  }\n\n  var behavior = router.options.scrollBehavior;\n  if (!behavior) {\n    return\n  }\n\n  if (process.env.NODE_ENV !== 'production') {\n    assert(typeof behavior === 'function', \"scrollBehavior must be a function\");\n  }\n\n  // wait until re-render finishes before scrolling\n  router.app.$nextTick(function () {\n    var position = getScrollPosition();\n    var shouldScroll = behavior.call(\n      router,\n      to,\n      from,\n      isPop ? position : null\n    );\n\n    if (!shouldScroll) {\n      return\n    }\n\n    if (typeof shouldScroll.then === 'function') {\n      shouldScroll\n        .then(function (shouldScroll) {\n          scrollToPosition((shouldScroll), position);\n        })\n        .catch(function (err) {\n          if (process.env.NODE_ENV !== 'production') {\n            assert(false, err.toString());\n          }\n        });\n    } else {\n      scrollToPosition(shouldScroll, position);\n    }\n  });\n}\n\nfunction saveScrollPosition () {\n  var key = getStateKey();\n  if (key) {\n    positionStore[key] = {\n      x: window.pageXOffset,\n      y: window.pageYOffset\n    };\n  }\n}\n\nfunction handlePopState (e) {\n  saveScrollPosition();\n  if (e.state && e.state.key) {\n    setStateKey(e.state.key);\n  }\n}\n\nfunction getScrollPosition () {\n  var key = getStateKey();\n  if (key) {\n    return positionStore[key]\n  }\n}\n\nfunction getElementPosition (el, offset) {\n  var docEl = document.documentElement;\n  var docRect = docEl.getBoundingClientRect();\n  var elRect = el.getBoundingClientRect();\n  return {\n    x: elRect.left - docRect.left - offset.x,\n    y: elRect.top - docRect.top - offset.y\n  }\n}\n\nfunction isValidPosition (obj) {\n  return isNumber(obj.x) || isNumber(obj.y)\n}\n\nfunction normalizePosition (obj) {\n  return {\n    x: isNumber(obj.x) ? obj.x : window.pageXOffset,\n    y: isNumber(obj.y) ? obj.y : window.pageYOffset\n  }\n}\n\nfunction normalizeOffset (obj) {\n  return {\n    x: isNumber(obj.x) ? obj.x : 0,\n    y: isNumber(obj.y) ? obj.y : 0\n  }\n}\n\nfunction isNumber (v) {\n  return typeof v === 'number'\n}\n\nvar hashStartsWithNumberRE = /^#\\d/;\n\nfunction scrollToPosition (shouldScroll, position) {\n  var isObject = typeof shouldScroll === 'object';\n  if (isObject && typeof shouldScroll.selector === 'string') {\n    // getElementById would still fail if the selector contains a more complicated query like #main[data-attr]\n    // but at the same time, it doesn't make much sense to select an element with an id and an extra selector\n    var el = hashStartsWithNumberRE.test(shouldScroll.selector) // $flow-disable-line\n      ? document.getElementById(shouldScroll.selector.slice(1)) // $flow-disable-line\n      : document.querySelector(shouldScroll.selector);\n\n    if (el) {\n      var offset =\n        shouldScroll.offset && typeof shouldScroll.offset === 'object'\n          ? shouldScroll.offset\n          : {};\n      offset = normalizeOffset(offset);\n      position = getElementPosition(el, offset);\n    } else if (isValidPosition(shouldScroll)) {\n      position = normalizePosition(shouldScroll);\n    }\n  } else if (isObject && isValidPosition(shouldScroll)) {\n    position = normalizePosition(shouldScroll);\n  }\n\n  if (position) {\n    // $flow-disable-line\n    if ('scrollBehavior' in document.documentElement.style) {\n      window.scrollTo({\n        left: position.x,\n        top: position.y,\n        // $flow-disable-line\n        behavior: shouldScroll.behavior\n      });\n    } else {\n      window.scrollTo(position.x, position.y);\n    }\n  }\n}\n\n/*  */\n\nvar supportsPushState =\n  inBrowser &&\n  (function () {\n    var ua = window.navigator.userAgent;\n\n    if (\n      (ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) &&\n      ua.indexOf('Mobile Safari') !== -1 &&\n      ua.indexOf('Chrome') === -1 &&\n      ua.indexOf('Windows Phone') === -1\n    ) {\n      return false\n    }\n\n    return window.history && typeof window.history.pushState === 'function'\n  })();\n\nfunction pushState (url, replace) {\n  saveScrollPosition();\n  // try...catch the pushState call to get around Safari\n  // DOM Exception 18 where it limits to 100 pushState calls\n  var history = window.history;\n  try {\n    if (replace) {\n      // preserve existing history state as it could be overriden by the user\n      var stateCopy = extend({}, history.state);\n      stateCopy.key = getStateKey();\n      history.replaceState(stateCopy, '', url);\n    } else {\n      history.pushState({ key: setStateKey(genStateKey()) }, '', url);\n    }\n  } catch (e) {\n    window.location[replace ? 'replace' : 'assign'](url);\n  }\n}\n\nfunction replaceState (url) {\n  pushState(url, true);\n}\n\n/*  */\n\nfunction runQueue (queue, fn, cb) {\n  var step = function (index) {\n    if (index >= queue.length) {\n      cb();\n    } else {\n      if (queue[index]) {\n        fn(queue[index], function () {\n          step(index + 1);\n        });\n      } else {\n        step(index + 1);\n      }\n    }\n  };\n  step(0);\n}\n\n// When changing thing, also edit router.d.ts\nvar NavigationFailureType = {\n  redirected: 2,\n  aborted: 4,\n  cancelled: 8,\n  duplicated: 16\n};\n\nfunction createNavigationRedirectedError (from, to) {\n  return createRouterError(\n    from,\n    to,\n    NavigationFailureType.redirected,\n    (\"Redirected when going from \\\"\" + (from.fullPath) + \"\\\" to \\\"\" + (stringifyRoute(\n      to\n    )) + \"\\\" via a navigation guard.\")\n  )\n}\n\nfunction createNavigationDuplicatedError (from, to) {\n  var error = createRouterError(\n    from,\n    to,\n    NavigationFailureType.duplicated,\n    (\"Avoided redundant navigation to current location: \\\"\" + (from.fullPath) + \"\\\".\")\n  );\n  // backwards compatible with the first introduction of Errors\n  error.name = 'NavigationDuplicated';\n  return error\n}\n\nfunction createNavigationCancelledError (from, to) {\n  return createRouterError(\n    from,\n    to,\n    NavigationFailureType.cancelled,\n    (\"Navigation cancelled from \\\"\" + (from.fullPath) + \"\\\" to \\\"\" + (to.fullPath) + \"\\\" with a new navigation.\")\n  )\n}\n\nfunction createNavigationAbortedError (from, to) {\n  return createRouterError(\n    from,\n    to,\n    NavigationFailureType.aborted,\n    (\"Navigation aborted from \\\"\" + (from.fullPath) + \"\\\" to \\\"\" + (to.fullPath) + \"\\\" via a navigation guard.\")\n  )\n}\n\nfunction createRouterError (from, to, type, message) {\n  var error = new Error(message);\n  error._isRouter = true;\n  error.from = from;\n  error.to = to;\n  error.type = type;\n\n  return error\n}\n\nvar propertiesToLog = ['params', 'query', 'hash'];\n\nfunction stringifyRoute (to) {\n  if (typeof to === 'string') { return to }\n  if ('path' in to) { return to.path }\n  var location = {};\n  propertiesToLog.forEach(function (key) {\n    if (key in to) { location[key] = to[key]; }\n  });\n  return JSON.stringify(location, null, 2)\n}\n\nfunction isError (err) {\n  return Object.prototype.toString.call(err).indexOf('Error') > -1\n}\n\nfunction isNavigationFailure (err, errorType) {\n  return (\n    isError(err) &&\n    err._isRouter &&\n    (errorType == null || err.type === errorType)\n  )\n}\n\n/*  */\n\nfunction resolveAsyncComponents (matched) {\n  return function (to, from, next) {\n    var hasAsync = false;\n    var pending = 0;\n    var error = null;\n\n    flatMapComponents(matched, function (def, _, match, key) {\n      // if it's a function and doesn't have cid attached,\n      // assume it's an async component resolve function.\n      // we are not using Vue's default async resolving mechanism because\n      // we want to halt the navigation until the incoming component has been\n      // resolved.\n      if (typeof def === 'function' && def.cid === undefined) {\n        hasAsync = true;\n        pending++;\n\n        var resolve = once(function (resolvedDef) {\n          if (isESModule(resolvedDef)) {\n            resolvedDef = resolvedDef.default;\n          }\n          // save resolved on async factory in case it's used elsewhere\n          def.resolved = typeof resolvedDef === 'function'\n            ? resolvedDef\n            : _Vue.extend(resolvedDef);\n          match.components[key] = resolvedDef;\n          pending--;\n          if (pending <= 0) {\n            next();\n          }\n        });\n\n        var reject = once(function (reason) {\n          var msg = \"Failed to resolve async component \" + key + \": \" + reason;\n          process.env.NODE_ENV !== 'production' && warn(false, msg);\n          if (!error) {\n            error = isError(reason)\n              ? reason\n              : new Error(msg);\n            next(error);\n          }\n        });\n\n        var res;\n        try {\n          res = def(resolve, reject);\n        } catch (e) {\n          reject(e);\n        }\n        if (res) {\n          if (typeof res.then === 'function') {\n            res.then(resolve, reject);\n          } else {\n            // new syntax in Vue 2.3\n            var comp = res.component;\n            if (comp && typeof comp.then === 'function') {\n              comp.then(resolve, reject);\n            }\n          }\n        }\n      }\n    });\n\n    if (!hasAsync) { next(); }\n  }\n}\n\nfunction flatMapComponents (\n  matched,\n  fn\n) {\n  return flatten(matched.map(function (m) {\n    return Object.keys(m.components).map(function (key) { return fn(\n      m.components[key],\n      m.instances[key],\n      m, key\n    ); })\n  }))\n}\n\nfunction flatten (arr) {\n  return Array.prototype.concat.apply([], arr)\n}\n\nvar hasSymbol =\n  typeof Symbol === 'function' &&\n  typeof Symbol.toStringTag === 'symbol';\n\nfunction isESModule (obj) {\n  return obj.__esModule || (hasSymbol && obj[Symbol.toStringTag] === 'Module')\n}\n\n// in Webpack 2, require.ensure now also returns a Promise\n// so the resolve/reject functions may get called an extra time\n// if the user uses an arrow function shorthand that happens to\n// return that Promise.\nfunction once (fn) {\n  var called = false;\n  return function () {\n    var args = [], len = arguments.length;\n    while ( len-- ) args[ len ] = arguments[ len ];\n\n    if (called) { return }\n    called = true;\n    return fn.apply(this, args)\n  }\n}\n\n/*  */\n\nvar History = function History (router, base) {\n  this.router = router;\n  this.base = normalizeBase(base);\n  // start with a route object that stands for \"nowhere\"\n  this.current = START;\n  this.pending = null;\n  this.ready = false;\n  this.readyCbs = [];\n  this.readyErrorCbs = [];\n  this.errorCbs = [];\n  this.listeners = [];\n};\n\nHistory.prototype.listen = function listen (cb) {\n  this.cb = cb;\n};\n\nHistory.prototype.onReady = function onReady (cb, errorCb) {\n  if (this.ready) {\n    cb();\n  } else {\n    this.readyCbs.push(cb);\n    if (errorCb) {\n      this.readyErrorCbs.push(errorCb);\n    }\n  }\n};\n\nHistory.prototype.onError = function onError (errorCb) {\n  this.errorCbs.push(errorCb);\n};\n\nHistory.prototype.transitionTo = function transitionTo (\n  location,\n  onComplete,\n  onAbort\n) {\n    var this$1 = this;\n\n  var route;\n  // catch redirect option https://github.com/vuejs/vue-router/issues/3201\n  try {\n    route = this.router.match(location, this.current);\n  } catch (e) {\n    this.errorCbs.forEach(function (cb) {\n      cb(e);\n    });\n    // Exception should still be thrown\n    throw e\n  }\n  var prev = this.current;\n  this.confirmTransition(\n    route,\n    function () {\n      this$1.updateRoute(route);\n      onComplete && onComplete(route);\n      this$1.ensureURL();\n      this$1.router.afterHooks.forEach(function (hook) {\n        hook && hook(route, prev);\n      });\n\n      // fire ready cbs once\n      if (!this$1.ready) {\n        this$1.ready = true;\n        this$1.readyCbs.forEach(function (cb) {\n          cb(route);\n        });\n      }\n    },\n    function (err) {\n      if (onAbort) {\n        onAbort(err);\n      }\n      if (err && !this$1.ready) {\n        // Initial redirection should not mark the history as ready yet\n        // because it's triggered by the redirection instead\n        // https://github.com/vuejs/vue-router/issues/3225\n        // https://github.com/vuejs/vue-router/issues/3331\n        if (!isNavigationFailure(err, NavigationFailureType.redirected) || prev !== START) {\n          this$1.ready = true;\n          this$1.readyErrorCbs.forEach(function (cb) {\n            cb(err);\n          });\n        }\n      }\n    }\n  );\n};\n\nHistory.prototype.confirmTransition = function confirmTransition (route, onComplete, onAbort) {\n    var this$1 = this;\n\n  var current = this.current;\n  this.pending = route;\n  var abort = function (err) {\n    // changed after adding errors with\n    // https://github.com/vuejs/vue-router/pull/3047 before that change,\n    // redirect and aborted navigation would produce an err == null\n    if (!isNavigationFailure(err) && isError(err)) {\n      if (this$1.errorCbs.length) {\n        this$1.errorCbs.forEach(function (cb) {\n          cb(err);\n        });\n      } else {\n        warn(false, 'uncaught error during route navigation:');\n        console.error(err);\n      }\n    }\n    onAbort && onAbort(err);\n  };\n  var lastRouteIndex = route.matched.length - 1;\n  var lastCurrentIndex = current.matched.length - 1;\n  if (\n    isSameRoute(route, current) &&\n    // in the case the route map has been dynamically appended to\n    lastRouteIndex === lastCurrentIndex &&\n    route.matched[lastRouteIndex] === current.matched[lastCurrentIndex]\n  ) {\n    this.ensureURL();\n    return abort(createNavigationDuplicatedError(current, route))\n  }\n\n  var ref = resolveQueue(\n    this.current.matched,\n    route.matched\n  );\n    var updated = ref.updated;\n    var deactivated = ref.deactivated;\n    var activated = ref.activated;\n\n  var queue = [].concat(\n    // in-component leave guards\n    extractLeaveGuards(deactivated),\n    // global before hooks\n    this.router.beforeHooks,\n    // in-component update hooks\n    extractUpdateHooks(updated),\n    // in-config enter guards\n    activated.map(function (m) { return m.beforeEnter; }),\n    // async components\n    resolveAsyncComponents(activated)\n  );\n\n  var iterator = function (hook, next) {\n    if (this$1.pending !== route) {\n      return abort(createNavigationCancelledError(current, route))\n    }\n    try {\n      hook(route, current, function (to) {\n        if (to === false) {\n          // next(false) -> abort navigation, ensure current URL\n          this$1.ensureURL(true);\n          abort(createNavigationAbortedError(current, route));\n        } else if (isError(to)) {\n          this$1.ensureURL(true);\n          abort(to);\n        } else if (\n          typeof to === 'string' ||\n          (typeof to === 'object' &&\n            (typeof to.path === 'string' || typeof to.name === 'string'))\n        ) {\n          // next('/') or next({ path: '/' }) -> redirect\n          abort(createNavigationRedirectedError(current, route));\n          if (typeof to === 'object' && to.replace) {\n            this$1.replace(to);\n          } else {\n            this$1.push(to);\n          }\n        } else {\n          // confirm transition and pass on the value\n          next(to);\n        }\n      });\n    } catch (e) {\n      abort(e);\n    }\n  };\n\n  runQueue(queue, iterator, function () {\n    // wait until async components are resolved before\n    // extracting in-component enter guards\n    var enterGuards = extractEnterGuards(activated);\n    var queue = enterGuards.concat(this$1.router.resolveHooks);\n    runQueue(queue, iterator, function () {\n      if (this$1.pending !== route) {\n        return abort(createNavigationCancelledError(current, route))\n      }\n      this$1.pending = null;\n      onComplete(route);\n      if (this$1.router.app) {\n        this$1.router.app.$nextTick(function () {\n          handleRouteEntered(route);\n        });\n      }\n    });\n  });\n};\n\nHistory.prototype.updateRoute = function updateRoute (route) {\n  this.current = route;\n  this.cb && this.cb(route);\n};\n\nHistory.prototype.setupListeners = function setupListeners () {\n  // Default implementation is empty\n};\n\nHistory.prototype.teardown = function teardown () {\n  // clean up event listeners\n  // https://github.com/vuejs/vue-router/issues/2341\n  this.listeners.forEach(function (cleanupListener) {\n    cleanupListener();\n  });\n  this.listeners = [];\n\n  // reset current history route\n  // https://github.com/vuejs/vue-router/issues/3294\n  this.current = START;\n  this.pending = null;\n};\n\nfunction normalizeBase (base) {\n  if (!base) {\n    if (inBrowser) {\n      // respect <base> tag\n      var baseEl = document.querySelector('base');\n      base = (baseEl && baseEl.getAttribute('href')) || '/';\n      // strip full URL origin\n      base = base.replace(/^https?:\\/\\/[^\\/]+/, '');\n    } else {\n      base = '/';\n    }\n  }\n  // make sure there's the starting slash\n  if (base.charAt(0) !== '/') {\n    base = '/' + base;\n  }\n  // remove trailing slash\n  return base.replace(/\\/$/, '')\n}\n\nfunction resolveQueue (\n  current,\n  next\n) {\n  var i;\n  var max = Math.max(current.length, next.length);\n  for (i = 0; i < max; i++) {\n    if (current[i] !== next[i]) {\n      break\n    }\n  }\n  return {\n    updated: next.slice(0, i),\n    activated: next.slice(i),\n    deactivated: current.slice(i)\n  }\n}\n\nfunction extractGuards (\n  records,\n  name,\n  bind,\n  reverse\n) {\n  var guards = flatMapComponents(records, function (def, instance, match, key) {\n    var guard = extractGuard(def, name);\n    if (guard) {\n      return Array.isArray(guard)\n        ? guard.map(function (guard) { return bind(guard, instance, match, key); })\n        : bind(guard, instance, match, key)\n    }\n  });\n  return flatten(reverse ? guards.reverse() : guards)\n}\n\nfunction extractGuard (\n  def,\n  key\n) {\n  if (typeof def !== 'function') {\n    // extend now so that global mixins are applied.\n    def = _Vue.extend(def);\n  }\n  return def.options[key]\n}\n\nfunction extractLeaveGuards (deactivated) {\n  return extractGuards(deactivated, 'beforeRouteLeave', bindGuard, true)\n}\n\nfunction extractUpdateHooks (updated) {\n  return extractGuards(updated, 'beforeRouteUpdate', bindGuard)\n}\n\nfunction bindGuard (guard, instance) {\n  if (instance) {\n    return function boundRouteGuard () {\n      return guard.apply(instance, arguments)\n    }\n  }\n}\n\nfunction extractEnterGuards (\n  activated\n) {\n  return extractGuards(\n    activated,\n    'beforeRouteEnter',\n    function (guard, _, match, key) {\n      return bindEnterGuard(guard, match, key)\n    }\n  )\n}\n\nfunction bindEnterGuard (\n  guard,\n  match,\n  key\n) {\n  return function routeEnterGuard (to, from, next) {\n    return guard(to, from, function (cb) {\n      if (typeof cb === 'function') {\n        if (!match.enteredCbs[key]) {\n          match.enteredCbs[key] = [];\n        }\n        match.enteredCbs[key].push(cb);\n      }\n      next(cb);\n    })\n  }\n}\n\n/*  */\n\nvar HTML5History = /*@__PURE__*/(function (History) {\n  function HTML5History (router, base) {\n    History.call(this, router, base);\n\n    this._startLocation = getLocation(this.base);\n  }\n\n  if ( History ) HTML5History.__proto__ = History;\n  HTML5History.prototype = Object.create( History && History.prototype );\n  HTML5History.prototype.constructor = HTML5History;\n\n  HTML5History.prototype.setupListeners = function setupListeners () {\n    var this$1 = this;\n\n    if (this.listeners.length > 0) {\n      return\n    }\n\n    var router = this.router;\n    var expectScroll = router.options.scrollBehavior;\n    var supportsScroll = supportsPushState && expectScroll;\n\n    if (supportsScroll) {\n      this.listeners.push(setupScroll());\n    }\n\n    var handleRoutingEvent = function () {\n      var current = this$1.current;\n\n      // Avoiding first `popstate` event dispatched in some browsers but first\n      // history route not updated since async guard at the same time.\n      var location = getLocation(this$1.base);\n      if (this$1.current === START && location === this$1._startLocation) {\n        return\n      }\n\n      this$1.transitionTo(location, function (route) {\n        if (supportsScroll) {\n          handleScroll(router, route, current, true);\n        }\n      });\n    };\n    window.addEventListener('popstate', handleRoutingEvent);\n    this.listeners.push(function () {\n      window.removeEventListener('popstate', handleRoutingEvent);\n    });\n  };\n\n  HTML5History.prototype.go = function go (n) {\n    window.history.go(n);\n  };\n\n  HTML5History.prototype.push = function push (location, onComplete, onAbort) {\n    var this$1 = this;\n\n    var ref = this;\n    var fromRoute = ref.current;\n    this.transitionTo(location, function (route) {\n      pushState(cleanPath(this$1.base + route.fullPath));\n      handleScroll(this$1.router, route, fromRoute, false);\n      onComplete && onComplete(route);\n    }, onAbort);\n  };\n\n  HTML5History.prototype.replace = function replace (location, onComplete, onAbort) {\n    var this$1 = this;\n\n    var ref = this;\n    var fromRoute = ref.current;\n    this.transitionTo(location, function (route) {\n      replaceState(cleanPath(this$1.base + route.fullPath));\n      handleScroll(this$1.router, route, fromRoute, false);\n      onComplete && onComplete(route);\n    }, onAbort);\n  };\n\n  HTML5History.prototype.ensureURL = function ensureURL (push) {\n    if (getLocation(this.base) !== this.current.fullPath) {\n      var current = cleanPath(this.base + this.current.fullPath);\n      push ? pushState(current) : replaceState(current);\n    }\n  };\n\n  HTML5History.prototype.getCurrentLocation = function getCurrentLocation () {\n    return getLocation(this.base)\n  };\n\n  return HTML5History;\n}(History));\n\nfunction getLocation (base) {\n  var path = window.location.pathname;\n  if (base && path.toLowerCase().indexOf(base.toLowerCase()) === 0) {\n    path = path.slice(base.length);\n  }\n  return (path || '/') + window.location.search + window.location.hash\n}\n\n/*  */\n\nvar HashHistory = /*@__PURE__*/(function (History) {\n  function HashHistory (router, base, fallback) {\n    History.call(this, router, base);\n    // check history fallback deeplinking\n    if (fallback && checkFallback(this.base)) {\n      return\n    }\n    ensureSlash();\n  }\n\n  if ( History ) HashHistory.__proto__ = History;\n  HashHistory.prototype = Object.create( History && History.prototype );\n  HashHistory.prototype.constructor = HashHistory;\n\n  // this is delayed until the app mounts\n  // to avoid the hashchange listener being fired too early\n  HashHistory.prototype.setupListeners = function setupListeners () {\n    var this$1 = this;\n\n    if (this.listeners.length > 0) {\n      return\n    }\n\n    var router = this.router;\n    var expectScroll = router.options.scrollBehavior;\n    var supportsScroll = supportsPushState && expectScroll;\n\n    if (supportsScroll) {\n      this.listeners.push(setupScroll());\n    }\n\n    var handleRoutingEvent = function () {\n      var current = this$1.current;\n      if (!ensureSlash()) {\n        return\n      }\n      this$1.transitionTo(getHash(), function (route) {\n        if (supportsScroll) {\n          handleScroll(this$1.router, route, current, true);\n        }\n        if (!supportsPushState) {\n          replaceHash(route.fullPath);\n        }\n      });\n    };\n    var eventType = supportsPushState ? 'popstate' : 'hashchange';\n    window.addEventListener(\n      eventType,\n      handleRoutingEvent\n    );\n    this.listeners.push(function () {\n      window.removeEventListener(eventType, handleRoutingEvent);\n    });\n  };\n\n  HashHistory.prototype.push = function push (location, onComplete, onAbort) {\n    var this$1 = this;\n\n    var ref = this;\n    var fromRoute = ref.current;\n    this.transitionTo(\n      location,\n      function (route) {\n        pushHash(route.fullPath);\n        handleScroll(this$1.router, route, fromRoute, false);\n        onComplete && onComplete(route);\n      },\n      onAbort\n    );\n  };\n\n  HashHistory.prototype.replace = function replace (location, onComplete, onAbort) {\n    var this$1 = this;\n\n    var ref = this;\n    var fromRoute = ref.current;\n    this.transitionTo(\n      location,\n      function (route) {\n        replaceHash(route.fullPath);\n        handleScroll(this$1.router, route, fromRoute, false);\n        onComplete && onComplete(route);\n      },\n      onAbort\n    );\n  };\n\n  HashHistory.prototype.go = function go (n) {\n    window.history.go(n);\n  };\n\n  HashHistory.prototype.ensureURL = function ensureURL (push) {\n    var current = this.current.fullPath;\n    if (getHash() !== current) {\n      push ? pushHash(current) : replaceHash(current);\n    }\n  };\n\n  HashHistory.prototype.getCurrentLocation = function getCurrentLocation () {\n    return getHash()\n  };\n\n  return HashHistory;\n}(History));\n\nfunction checkFallback (base) {\n  var location = getLocation(base);\n  if (!/^\\/#/.test(location)) {\n    window.location.replace(cleanPath(base + '/#' + location));\n    return true\n  }\n}\n\nfunction ensureSlash () {\n  var path = getHash();\n  if (path.charAt(0) === '/') {\n    return true\n  }\n  replaceHash('/' + path);\n  return false\n}\n\nfunction getHash () {\n  // We can't use window.location.hash here because it's not\n  // consistent across browsers - Firefox will pre-decode it!\n  var href = window.location.href;\n  var index = href.indexOf('#');\n  // empty path\n  if (index < 0) { return '' }\n\n  href = href.slice(index + 1);\n\n  return href\n}\n\nfunction getUrl (path) {\n  var href = window.location.href;\n  var i = href.indexOf('#');\n  var base = i >= 0 ? href.slice(0, i) : href;\n  return (base + \"#\" + path)\n}\n\nfunction pushHash (path) {\n  if (supportsPushState) {\n    pushState(getUrl(path));\n  } else {\n    window.location.hash = path;\n  }\n}\n\nfunction replaceHash (path) {\n  if (supportsPushState) {\n    replaceState(getUrl(path));\n  } else {\n    window.location.replace(getUrl(path));\n  }\n}\n\n/*  */\n\nvar AbstractHistory = /*@__PURE__*/(function (History) {\n  function AbstractHistory (router, base) {\n    History.call(this, router, base);\n    this.stack = [];\n    this.index = -1;\n  }\n\n  if ( History ) AbstractHistory.__proto__ = History;\n  AbstractHistory.prototype = Object.create( History && History.prototype );\n  AbstractHistory.prototype.constructor = AbstractHistory;\n\n  AbstractHistory.prototype.push = function push (location, onComplete, onAbort) {\n    var this$1 = this;\n\n    this.transitionTo(\n      location,\n      function (route) {\n        this$1.stack = this$1.stack.slice(0, this$1.index + 1).concat(route);\n        this$1.index++;\n        onComplete && onComplete(route);\n      },\n      onAbort\n    );\n  };\n\n  AbstractHistory.prototype.replace = function replace (location, onComplete, onAbort) {\n    var this$1 = this;\n\n    this.transitionTo(\n      location,\n      function (route) {\n        this$1.stack = this$1.stack.slice(0, this$1.index).concat(route);\n        onComplete && onComplete(route);\n      },\n      onAbort\n    );\n  };\n\n  AbstractHistory.prototype.go = function go (n) {\n    var this$1 = this;\n\n    var targetIndex = this.index + n;\n    if (targetIndex < 0 || targetIndex >= this.stack.length) {\n      return\n    }\n    var route = this.stack[targetIndex];\n    this.confirmTransition(\n      route,\n      function () {\n        var prev = this$1.current;\n        this$1.index = targetIndex;\n        this$1.updateRoute(route);\n        this$1.router.afterHooks.forEach(function (hook) {\n          hook && hook(route, prev);\n        });\n      },\n      function (err) {\n        if (isNavigationFailure(err, NavigationFailureType.duplicated)) {\n          this$1.index = targetIndex;\n        }\n      }\n    );\n  };\n\n  AbstractHistory.prototype.getCurrentLocation = function getCurrentLocation () {\n    var current = this.stack[this.stack.length - 1];\n    return current ? current.fullPath : '/'\n  };\n\n  AbstractHistory.prototype.ensureURL = function ensureURL () {\n    // noop\n  };\n\n  return AbstractHistory;\n}(History));\n\n/*  */\n\nvar VueRouter = function VueRouter (options) {\n  if ( options === void 0 ) options = {};\n\n  this.app = null;\n  this.apps = [];\n  this.options = options;\n  this.beforeHooks = [];\n  this.resolveHooks = [];\n  this.afterHooks = [];\n  this.matcher = createMatcher(options.routes || [], this);\n\n  var mode = options.mode || 'hash';\n  this.fallback =\n    mode === 'history' && !supportsPushState && options.fallback !== false;\n  if (this.fallback) {\n    mode = 'hash';\n  }\n  if (!inBrowser) {\n    mode = 'abstract';\n  }\n  this.mode = mode;\n\n  switch (mode) {\n    case 'history':\n      this.history = new HTML5History(this, options.base);\n      break\n    case 'hash':\n      this.history = new HashHistory(this, options.base, this.fallback);\n      break\n    case 'abstract':\n      this.history = new AbstractHistory(this, options.base);\n      break\n    default:\n      if (process.env.NODE_ENV !== 'production') {\n        assert(false, (\"invalid mode: \" + mode));\n      }\n  }\n};\n\nvar prototypeAccessors = { currentRoute: { configurable: true } };\n\nVueRouter.prototype.match = function match (raw, current, redirectedFrom) {\n  return this.matcher.match(raw, current, redirectedFrom)\n};\n\nprototypeAccessors.currentRoute.get = function () {\n  return this.history && this.history.current\n};\n\nVueRouter.prototype.init = function init (app /* Vue component instance */) {\n    var this$1 = this;\n\n  process.env.NODE_ENV !== 'production' &&\n    assert(\n      install.installed,\n      \"not installed. Make sure to call `Vue.use(VueRouter)` \" +\n        \"before creating root instance.\"\n    );\n\n  this.apps.push(app);\n\n  // set up app destroyed handler\n  // https://github.com/vuejs/vue-router/issues/2639\n  app.$once('hook:destroyed', function () {\n    // clean out app from this.apps array once destroyed\n    var index = this$1.apps.indexOf(app);\n    if (index > -1) { this$1.apps.splice(index, 1); }\n    // ensure we still have a main app or null if no apps\n    // we do not release the router so it can be reused\n    if (this$1.app === app) { this$1.app = this$1.apps[0] || null; }\n\n    if (!this$1.app) { this$1.history.teardown(); }\n  });\n\n  // main app previously initialized\n  // return as we don't need to set up new history listener\n  if (this.app) {\n    return\n  }\n\n  this.app = app;\n\n  var history = this.history;\n\n  if (history instanceof HTML5History || history instanceof HashHistory) {\n    var handleInitialScroll = function (routeOrError) {\n      var from = history.current;\n      var expectScroll = this$1.options.scrollBehavior;\n      var supportsScroll = supportsPushState && expectScroll;\n\n      if (supportsScroll && 'fullPath' in routeOrError) {\n        handleScroll(this$1, routeOrError, from, false);\n      }\n    };\n    var setupListeners = function (routeOrError) {\n      history.setupListeners();\n      handleInitialScroll(routeOrError);\n    };\n    history.transitionTo(\n      history.getCurrentLocation(),\n      setupListeners,\n      setupListeners\n    );\n  }\n\n  history.listen(function (route) {\n    this$1.apps.forEach(function (app) {\n      app._route = route;\n    });\n  });\n};\n\nVueRouter.prototype.beforeEach = function beforeEach (fn) {\n  return registerHook(this.beforeHooks, fn)\n};\n\nVueRouter.prototype.beforeResolve = function beforeResolve (fn) {\n  return registerHook(this.resolveHooks, fn)\n};\n\nVueRouter.prototype.afterEach = function afterEach (fn) {\n  return registerHook(this.afterHooks, fn)\n};\n\nVueRouter.prototype.onReady = function onReady (cb, errorCb) {\n  this.history.onReady(cb, errorCb);\n};\n\nVueRouter.prototype.onError = function onError (errorCb) {\n  this.history.onError(errorCb);\n};\n\nVueRouter.prototype.push = function push (location, onComplete, onAbort) {\n    var this$1 = this;\n\n  // $flow-disable-line\n  if (!onComplete && !onAbort && typeof Promise !== 'undefined') {\n    return new Promise(function (resolve, reject) {\n      this$1.history.push(location, resolve, reject);\n    })\n  } else {\n    this.history.push(location, onComplete, onAbort);\n  }\n};\n\nVueRouter.prototype.replace = function replace (location, onComplete, onAbort) {\n    var this$1 = this;\n\n  // $flow-disable-line\n  if (!onComplete && !onAbort && typeof Promise !== 'undefined') {\n    return new Promise(function (resolve, reject) {\n      this$1.history.replace(location, resolve, reject);\n    })\n  } else {\n    this.history.replace(location, onComplete, onAbort);\n  }\n};\n\nVueRouter.prototype.go = function go (n) {\n  this.history.go(n);\n};\n\nVueRouter.prototype.back = function back () {\n  this.go(-1);\n};\n\nVueRouter.prototype.forward = function forward () {\n  this.go(1);\n};\n\nVueRouter.prototype.getMatchedComponents = function getMatchedComponents (to) {\n  var route = to\n    ? to.matched\n      ? to\n      : this.resolve(to).route\n    : this.currentRoute;\n  if (!route) {\n    return []\n  }\n  return [].concat.apply(\n    [],\n    route.matched.map(function (m) {\n      return Object.keys(m.components).map(function (key) {\n        return m.components[key]\n      })\n    })\n  )\n};\n\nVueRouter.prototype.resolve = function resolve (\n  to,\n  current,\n  append\n) {\n  current = current || this.history.current;\n  var location = normalizeLocation(to, current, append, this);\n  var route = this.match(location, current);\n  var fullPath = route.redirectedFrom || route.fullPath;\n  var base = this.history.base;\n  var href = createHref(base, fullPath, this.mode);\n  return {\n    location: location,\n    route: route,\n    href: href,\n    // for backwards compat\n    normalizedTo: location,\n    resolved: route\n  }\n};\n\nVueRouter.prototype.getRoutes = function getRoutes () {\n  return this.matcher.getRoutes()\n};\n\nVueRouter.prototype.addRoute = function addRoute (parentOrRoute, route) {\n  this.matcher.addRoute(parentOrRoute, route);\n  if (this.history.current !== START) {\n    this.history.transitionTo(this.history.getCurrentLocation());\n  }\n};\n\nVueRouter.prototype.addRoutes = function addRoutes (routes) {\n  if (process.env.NODE_ENV !== 'production') {\n    warn(false, 'router.addRoutes() is deprecated and has been removed in Vue Router 4. Use router.addRoute() instead.');\n  }\n  this.matcher.addRoutes(routes);\n  if (this.history.current !== START) {\n    this.history.transitionTo(this.history.getCurrentLocation());\n  }\n};\n\nObject.defineProperties( VueRouter.prototype, prototypeAccessors );\n\nfunction registerHook (list, fn) {\n  list.push(fn);\n  return function () {\n    var i = list.indexOf(fn);\n    if (i > -1) { list.splice(i, 1); }\n  }\n}\n\nfunction createHref (base, fullPath, mode) {\n  var path = mode === 'hash' ? '#' + fullPath : fullPath;\n  return base ? cleanPath(base + '/' + path) : path\n}\n\nVueRouter.install = install;\nVueRouter.version = '3.5.1';\nVueRouter.isNavigationFailure = isNavigationFailure;\nVueRouter.NavigationFailureType = NavigationFailureType;\nVueRouter.START_LOCATION = START;\n\nif (inBrowser && window.Vue) {\n  window.Vue.use(VueRouter);\n}\n\nexport default VueRouter;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/vue-router/dist/vue-router.esm.js\n// module id = /ocq\n// module chunks = 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sourceURL=webpack-internal:////ocq\n")},"02w1":function(module,exports,__webpack_require__){"use strict";eval("\n\nexports.__esModule = true;\nexports.removeResizeListener = exports.addResizeListener = undefined;\n\nvar _resizeObserverPolyfill = __webpack_require__(\"z+gd\");\n\nvar _resizeObserverPolyfill2 = _interopRequireDefault(_resizeObserverPolyfill);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar isServer = typeof window === 'undefined';\n\n/* istanbul ignore next */\nvar resizeHandler = function resizeHandler(entries) {\n for (var _iterator = entries, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {\n var _ref;\n\n if (_isArray) {\n if (_i >= _iterator.length) break;\n _ref = _iterator[_i++];\n } else {\n _i = _iterator.next();\n if (_i.done) break;\n _ref = _i.value;\n }\n\n var entry = _ref;\n\n var listeners = entry.target.__resizeListeners__ || [];\n if (listeners.length) {\n listeners.forEach(function (fn) {\n fn();\n });\n }\n }\n};\n\n/* istanbul ignore next */\nvar addResizeListener = exports.addResizeListener = function addResizeListener(element, fn) {\n if (isServer) return;\n if (!element.__resizeListeners__) {\n element.__resizeListeners__ = [];\n element.__ro__ = new _resizeObserverPolyfill2.default(resizeHandler);\n element.__ro__.observe(element);\n }\n element.__resizeListeners__.push(fn);\n};\n\n/* istanbul ignore next */\nvar removeResizeListener = exports.removeResizeListener = function removeResizeListener(element, fn) {\n if (!element || !element.__resizeListeners__) return;\n element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1);\n if (!element.__resizeListeners__.length) {\n element.__ro__.disconnect();\n }\n};//# sourceURL=[module]\n//# 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__webpack_require__) {\n\n"use strict";\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return normalizeComponent; });\n/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nfunction normalizeComponent (\n scriptExports,\n render,\n staticRenderFns,\n functionalTemplate,\n injectStyles,\n scopeId,\n moduleIdentifier, /* server only */\n shadowMode /* vue-cli only */\n) {\n // Vue.extend constructor export interop\n var options = typeof scriptExports === \'function\'\n ? scriptExports.options\n : scriptExports\n\n // render functions\n if (render) {\n options.render = render\n options.staticRenderFns = staticRenderFns\n options._compiled = true\n }\n\n // functional template\n if (functionalTemplate) {\n options.functional = true\n }\n\n // scopedId\n if (scopeId) {\n options._scopeId = \'data-v-\' + scopeId\n }\n\n var hook\n if (moduleIdentifier) { // server build\n hook = function (context) {\n // 2.3 injection\n context =\n context || // cached call\n (this.$vnode && this.$vnode.ssrContext) || // stateful\n (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n // 2.2 with runInNewContext: true\n if (!context && typeof __VUE_SSR_CONTEXT__ !== \'undefined\') {\n context = __VUE_SSR_CONTEXT__\n }\n // inject component styles\n if (injectStyles) {\n injectStyles.call(this, context)\n }\n // register component module identifier for async chunk inferrence\n if (context && context._registeredComponents) {\n context._registeredComponents.add(moduleIdentifier)\n }\n }\n // used by ssr in case component is cached and beforeCreate\n // never gets called\n options._ssrRegister = hook\n } else if (injectStyles) {\n hook = shadowMode\n ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }\n : injectStyles\n }\n\n if (hook) {\n if (options.functional) {\n // for template-only hot-reload because in that case the render fn doesn\'t\n // go through the normalizer\n options._injectStyles = hook\n // register for functioal component in vue file\n var originalRender = options.render\n options.render = function renderWithStyleInjection (h, context) {\n hook.call(context)\n return originalRender(h, context)\n }\n } else {\n // inject component registration as beforeCreate hook\n var existing = options.beforeCreate\n options.beforeCreate = existing\n ? [].concat(existing, hook)\n : [hook]\n }\n }\n\n return {\n exports: scriptExports,\n options: options\n }\n}\n\n\n/***/ }),\n\n/***/ 10:\n/***/ (function(module, exports) {\n\nmodule.exports = __webpack_require__("HJMx");\n\n/***/ }),\n\n/***/ 114:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n"use strict";\n__webpack_require__.r(__webpack_exports__);\n\n// CONCATENATED MODULE: ./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/vue-loader/lib??vue-loader-options!./packages/input-number/src/input-number.vue?vue&type=template&id=42f8cf66&\nvar render = function() {\n var _vm = this\n var _h = _vm.$createElement\n var _c = _vm._self._c || _h\n return _c(\n "div",\n {\n class: [\n "el-input-number",\n _vm.inputNumberSize ? "el-input-number--" + _vm.inputNumberSize : "",\n { "is-disabled": _vm.inputNumberDisabled },\n { "is-without-controls": !_vm.controls },\n { "is-controls-right": _vm.controlsAtRight }\n ],\n on: {\n dragstart: function($event) {\n $event.preventDefault()\n }\n }\n },\n [\n _vm.controls\n ? _c(\n "span",\n {\n directives: [\n {\n name: "repeat-click",\n rawName: "v-repeat-click",\n value: _vm.decrease,\n expression: "decrease"\n }\n ],\n staticClass: "el-input-number__decrease",\n class: { "is-disabled": _vm.minDisabled },\n attrs: { role: "button" },\n on: {\n keydown: function($event) {\n if (\n !("button" in $event) &&\n _vm._k($event.keyCode, "enter", 13, $event.key, "Enter")\n ) {\n return null\n }\n return _vm.decrease($event)\n }\n }\n },\n [\n _c("i", {\n class:\n "el-icon-" + (_vm.controlsAtRight ? "arrow-down" : "minus")\n })\n ]\n )\n : _vm._e(),\n _vm.controls\n ? _c(\n "span",\n {\n directives: [\n {\n name: "repeat-click",\n rawName: "v-repeat-click",\n value: _vm.increase,\n expression: "increase"\n }\n ],\n staticClass: "el-input-number__increase",\n class: { "is-disabled": _vm.maxDisabled },\n attrs: { role: "button" },\n on: {\n keydown: function($event) {\n if (\n !("button" in $event) &&\n _vm._k($event.keyCode, "enter", 13, $event.key, "Enter")\n ) {\n return null\n }\n return _vm.increase($event)\n }\n }\n },\n [\n _c("i", {\n class: "el-icon-" + (_vm.controlsAtRight ? "arrow-up" : "plus")\n })\n ]\n )\n : _vm._e(),\n _c("el-input", {\n ref: "input",\n attrs: {\n value: _vm.displayValue,\n placeholder: _vm.placeholder,\n disabled: _vm.inputNumberDisabled,\n size: _vm.inputNumberSize,\n max: _vm.max,\n min: _vm.min,\n name: _vm.name,\n label: _vm.label\n },\n on: {\n blur: _vm.handleBlur,\n focus: _vm.handleFocus,\n input: _vm.handleInput,\n change: _vm.handleInputChange\n },\n nativeOn: {\n keydown: [\n function($event) {\n if (\n !("button" in $event) &&\n _vm._k($event.keyCode, "up", 38, $event.key, ["Up", "ArrowUp"])\n ) {\n return null\n }\n $event.preventDefault()\n return _vm.increase($event)\n },\n function($event) {\n if (\n !("button" in $event) &&\n _vm._k($event.keyCode, "down", 40, $event.key, [\n "Down",\n "ArrowDown"\n ])\n ) {\n return null\n }\n $event.preventDefault()\n return _vm.decrease($event)\n }\n ]\n }\n })\n ],\n 1\n )\n}\nvar staticRenderFns = []\nrender._withStripped = true\n\n\n// CONCATENATED MODULE: ./packages/input-number/src/input-number.vue?vue&type=template&id=42f8cf66&\n\n// EXTERNAL MODULE: external "element-ui/lib/input"\nvar input_ = __webpack_require__(10);\nvar input_default = /*#__PURE__*/__webpack_require__.n(input_);\n\n// EXTERNAL MODULE: external "element-ui/lib/mixins/focus"\nvar focus_ = __webpack_require__(22);\nvar focus_default = /*#__PURE__*/__webpack_require__.n(focus_);\n\n// EXTERNAL MODULE: ./src/directives/repeat-click.js\nvar repeat_click = __webpack_require__(30);\n\n// CONCATENATED MODULE: ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib??vue-loader-options!./packages/input-number/src/input-number.vue?vue&type=script&lang=js&\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n\n\n\n\n\n/* harmony default export */ var input_numbervue_type_script_lang_js_ = ({\n name: \'ElInputNumber\',\n mixins: [focus_default()(\'input\')],\n inject: {\n elForm: {\n default: \'\'\n },\n elFormItem: {\n default: \'\'\n }\n },\n directives: {\n repeatClick: repeat_click["a" /* default */]\n },\n components: {\n ElInput: input_default.a\n },\n props: {\n step: {\n type: Number,\n default: 1\n },\n stepStrictly: {\n type: Boolean,\n default: false\n },\n max: {\n type: Number,\n default: Infinity\n },\n min: {\n type: Number,\n default: -Infinity\n },\n value: {},\n disabled: Boolean,\n size: String,\n controls: {\n type: Boolean,\n default: true\n },\n controlsPosition: {\n type: String,\n default: \'\'\n },\n name: String,\n label: String,\n placeholder: String,\n precision: {\n type: Number,\n validator: function validator(val) {\n return val >= 0 && val === parseInt(val, 10);\n }\n }\n },\n data: function data() {\n return {\n currentValue: 0,\n userInput: null\n };\n },\n\n watch: {\n value: {\n immediate: true,\n handler: function handler(value) {\n var newVal = value === undefined ? value : Number(value);\n if (newVal !== undefined) {\n if (isNaN(newVal)) {\n return;\n }\n\n if (this.stepStrictly) {\n var stepPrecision = this.getPrecision(this.step);\n var precisionFactor = Math.pow(10, stepPrecision);\n newVal = Math.round(newVal / this.step) * precisionFactor * this.step / precisionFactor;\n }\n\n if (this.precision !== undefined) {\n newVal = this.toPrecision(newVal, this.precision);\n }\n }\n if (newVal >= this.max) newVal = this.max;\n if (newVal <= this.min) newVal = this.min;\n this.currentValue = newVal;\n this.userInput = null;\n this.$emit(\'input\', newVal);\n }\n }\n },\n computed: {\n minDisabled: function minDisabled() {\n return this._decrease(this.value, this.step) < this.min;\n },\n maxDisabled: function maxDisabled() {\n return this._increase(this.value, this.step) > this.max;\n },\n numPrecision: function numPrecision() {\n var value = this.value,\n step = this.step,\n getPrecision = this.getPrecision,\n precision = this.precision;\n\n var stepPrecision = getPrecision(step);\n if (precision !== undefined) {\n if (stepPrecision > precision) {\n console.warn(\'[Element Warn][InputNumber]precision should not be less than the decimal places of step\');\n }\n return precision;\n } else {\n return Math.max(getPrecision(value), stepPrecision);\n }\n },\n controlsAtRight: function controlsAtRight() {\n return this.controls && this.controlsPosition === \'right\';\n },\n _elFormItemSize: function _elFormItemSize() {\n return (this.elFormItem || {}).elFormItemSize;\n },\n inputNumberSize: function inputNumberSize() {\n return this.size || this._elFormItemSize || (this.$ELEMENT || {}).size;\n },\n inputNumberDisabled: function inputNumberDisabled() {\n return this.disabled || !!(this.elForm || {}).disabled;\n },\n displayValue: function displayValue() {\n if (this.userInput !== null) {\n return this.userInput;\n }\n\n var currentValue = this.currentValue;\n\n if (typeof currentValue === \'number\') {\n if (this.stepStrictly) {\n var stepPrecision = this.getPrecision(this.step);\n var precisionFactor = Math.pow(10, stepPrecision);\n currentValue = Math.round(currentValue / this.step) * precisionFactor * this.step / precisionFactor;\n }\n\n if (this.precision !== undefined) {\n currentValue = currentValue.toFixed(this.precision);\n }\n }\n\n return currentValue;\n }\n },\n methods: {\n toPrecision: function toPrecision(num, precision) {\n if (precision === undefined) precision = this.numPrecision;\n return parseFloat(Math.round(num * Math.pow(10, precision)) / Math.pow(10, precision));\n },\n getPrecision: function getPrecision(value) {\n if (value === undefined) return 0;\n var valueString = value.toString();\n var dotPosition = valueString.indexOf(\'.\');\n var precision = 0;\n if (dotPosition !== -1) {\n precision = valueString.length - dotPosition - 1;\n }\n return precision;\n },\n _increase: function _increase(val, step) {\n if (typeof val !== \'number\' && val !== undefined) return this.currentValue;\n\n var precisionFactor = Math.pow(10, this.numPrecision);\n // Solve the accuracy problem of JS decimal calculation by converting the value to integer.\n return this.toPrecision((precisionFactor * val + precisionFactor * step) / precisionFactor);\n },\n _decrease: function _decrease(val, step) {\n if (typeof val !== \'number\' && val !== undefined) return this.currentValue;\n\n var precisionFactor = Math.pow(10, this.numPrecision);\n\n return this.toPrecision((precisionFactor * val - precisionFactor * step) / precisionFactor);\n },\n increase: function increase() {\n if (this.inputNumberDisabled || this.maxDisabled) return;\n var value = this.value || 0;\n var newVal = this._increase(value, this.step);\n this.setCurrentValue(newVal);\n },\n decrease: function decrease() {\n if (this.inputNumberDisabled || this.minDisabled) return;\n var value = this.value || 0;\n var newVal = this._decrease(value, this.step);\n this.setCurrentValue(newVal);\n },\n handleBlur: function handleBlur(event) {\n this.$emit(\'blur\', event);\n },\n handleFocus: function handleFocus(event) {\n this.$emit(\'focus\', event);\n },\n setCurrentValue: function setCurrentValue(newVal) {\n var oldVal = this.currentValue;\n if (typeof newVal === \'number\' && this.precision !== undefined) {\n newVal = this.toPrecision(newVal, this.precision);\n }\n if (newVal >= this.max) newVal = this.max;\n if (newVal <= this.min) newVal = this.min;\n if (oldVal === newVal) return;\n this.userInput = null;\n this.$emit(\'input\', newVal);\n this.$emit(\'change\', newVal, oldVal);\n this.currentValue = newVal;\n },\n handleInput: function handleInput(value) {\n this.userInput = value;\n },\n handleInputChange: function handleInputChange(value) {\n var newVal = value === \'\' ? undefined : Number(value);\n if (!isNaN(newVal) || value === \'\') {\n this.setCurrentValue(newVal);\n }\n this.userInput = null;\n },\n select: function select() {\n this.$refs.input.select();\n }\n },\n mounted: function mounted() {\n var innerInput = this.$refs.input.$refs.input;\n innerInput.setAttribute(\'role\', \'spinbutton\');\n innerInput.setAttribute(\'aria-valuemax\', this.max);\n innerInput.setAttribute(\'aria-valuemin\', this.min);\n innerInput.setAttribute(\'aria-valuenow\', this.currentValue);\n innerInput.setAttribute(\'aria-disabled\', this.inputNumberDisabled);\n },\n updated: function updated() {\n if (!this.$refs || !this.$refs.input) return;\n var innerInput = this.$refs.input.$refs.input;\n innerInput.setAttribute(\'aria-valuenow\', this.currentValue);\n }\n});\n// CONCATENATED MODULE: ./packages/input-number/src/input-number.vue?vue&type=script&lang=js&\n /* harmony default export */ var src_input_numbervue_type_script_lang_js_ = (input_numbervue_type_script_lang_js_); \n// EXTERNAL MODULE: ./node_modules/vue-loader/lib/runtime/componentNormalizer.js\nvar componentNormalizer = __webpack_require__(0);\n\n// CONCATENATED MODULE: ./packages/input-number/src/input-number.vue\n\n\n\n\n\n/* normalize component */\n\nvar component = Object(componentNormalizer["a" /* default */])(\n src_input_numbervue_type_script_lang_js_,\n render,\n staticRenderFns,\n false,\n null,\n null,\n null\n \n)\n\n/* hot reload */\nif (false) { var api; }\ncomponent.options.__file = "packages/input-number/src/input-number.vue"\n/* harmony default export */ var input_number = (component.exports);\n// CONCATENATED MODULE: ./packages/input-number/index.js\n\n\n/* istanbul ignore next */\ninput_number.install = function (Vue) {\n Vue.component(input_number.name, input_number);\n};\n\n/* harmony default export */ var packages_input_number = __webpack_exports__["default"] = (input_number);\n\n/***/ }),\n\n/***/ 2:\n/***/ (function(module, exports) {\n\nmodule.exports = __webpack_require__("2kvA");\n\n/***/ }),\n\n/***/ 22:\n/***/ (function(module, exports) {\n\nmodule.exports = __webpack_require__("1oZe");\n\n/***/ }),\n\n/***/ 30:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n"use strict";\n/* harmony import */ var element_ui_src_utils_dom__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(2);\n/* harmony import */ var element_ui_src_utils_dom__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(element_ui_src_utils_dom__WEBPACK_IMPORTED_MODULE_0__);\n\n\n/* harmony default export */ __webpack_exports__["a"] = ({\n bind: function bind(el, binding, vnode) {\n var interval = null;\n var startTime = void 0;\n var handler = function handler() {\n return vnode.context[binding.expression].apply();\n };\n var clear = function clear() {\n if (Date.now() - startTime < 100) {\n handler();\n }\n clearInterval(interval);\n interval = null;\n };\n\n Object(element_ui_src_utils_dom__WEBPACK_IMPORTED_MODULE_0__["on"])(el, \'mousedown\', function (e) {\n if (e.button !== 0) return;\n startTime = Date.now();\n Object(element_ui_src_utils_dom__WEBPACK_IMPORTED_MODULE_0__["once"])(document, \'mouseup\', clear);\n clearInterval(interval);\n interval = setInterval(handler, 100);\n });\n }\n});\n\n/***/ })\n\n/******/ });//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"0kY3.js","sources":["webpack:///./node_modules/element-ui/lib/input-number.js?d246"],"sourcesContent":["module.exports =\n/******/ (function(modules) { // webpackBootstrap\n/******/ \t// The module cache\n/******/ \tvar installedModules = {};\n/******/\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(installedModules[moduleId]) {\n/******/ \t\t\treturn installedModules[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = installedModules[moduleId] = {\n/******/ \t\t\ti: moduleId,\n/******/ \t\t\tl: false,\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/\n/******/ \t\t// Execute the module function\n/******/ 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for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));\n/******/ \t\treturn ns;\n/******/ \t};\n/******/\n/******/ \t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t__webpack_require__.n = function(module) {\n/******/ \t\tvar getter = module && module.__esModule ?\n/******/ \t\t\tfunction getDefault() { return module['default']; } :\n/******/ \t\t\tfunction getModuleExports() { return module; };\n/******/ \t\t__webpack_require__.d(getter, 'a', getter);\n/******/ \t\treturn getter;\n/******/ \t};\n/******/\n/******/ \t// Object.prototype.hasOwnProperty.call\n/******/ \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n/******/\n/******/ \t// __webpack_public_path__\n/******/ \t__webpack_require__.p = \"/dist/\";\n/******/\n/******/\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(__webpack_require__.s = 114);\n/******/ })\n/************************************************************************/\n/******/ ({\n\n/***/ 0:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"a\", function() { return normalizeComponent; });\n/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nfunction normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functioal component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n\n\n/***/ }),\n\n/***/ 10:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/input\");\n\n/***/ }),\n\n/***/ 114:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n__webpack_require__.r(__webpack_exports__);\n\n// CONCATENATED MODULE: ./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/vue-loader/lib??vue-loader-options!./packages/input-number/src/input-number.vue?vue&type=template&id=42f8cf66&\nvar render = function() {\n  var _vm = this\n  var _h = _vm.$createElement\n  var _c = _vm._self._c || _h\n  return _c(\n    \"div\",\n    {\n      class: [\n        \"el-input-number\",\n        _vm.inputNumberSize ? \"el-input-number--\" + _vm.inputNumberSize : \"\",\n        { \"is-disabled\": _vm.inputNumberDisabled },\n        { \"is-without-controls\": !_vm.controls },\n        { \"is-controls-right\": _vm.controlsAtRight }\n      ],\n      on: {\n        dragstart: function($event) {\n          $event.preventDefault()\n        }\n      }\n    },\n    [\n      _vm.controls\n        ? _c(\n            \"span\",\n            {\n              directives: [\n                {\n                  name: \"repeat-click\",\n                  rawName: \"v-repeat-click\",\n                  value: _vm.decrease,\n                  expression: \"decrease\"\n                }\n              ],\n              staticClass: \"el-input-number__decrease\",\n              class: { \"is-disabled\": _vm.minDisabled },\n              attrs: { role: \"button\" },\n              on: {\n                keydown: function($event) {\n                  if (\n                    !(\"button\" in $event) &&\n                    _vm._k($event.keyCode, \"enter\", 13, $event.key, \"Enter\")\n                  ) {\n                    return null\n                  }\n                  return _vm.decrease($event)\n                }\n              }\n            },\n            [\n              _c(\"i\", {\n                class:\n                  \"el-icon-\" + (_vm.controlsAtRight ? \"arrow-down\" : \"minus\")\n              })\n            ]\n          )\n        : _vm._e(),\n      _vm.controls\n        ? _c(\n            \"span\",\n            {\n              directives: [\n                {\n                  name: \"repeat-click\",\n                  rawName: \"v-repeat-click\",\n                  value: _vm.increase,\n                  expression: \"increase\"\n                }\n              ],\n              staticClass: \"el-input-number__increase\",\n              class: { \"is-disabled\": _vm.maxDisabled },\n              attrs: { role: \"button\" },\n              on: {\n                keydown: function($event) {\n                  if (\n                    !(\"button\" in $event) &&\n                    _vm._k($event.keyCode, \"enter\", 13, $event.key, \"Enter\")\n                  ) {\n                    return null\n                  }\n                  return _vm.increase($event)\n                }\n              }\n            },\n            [\n              _c(\"i\", {\n                class: \"el-icon-\" + (_vm.controlsAtRight ? \"arrow-up\" : \"plus\")\n              })\n            ]\n          )\n        : _vm._e(),\n      _c(\"el-input\", {\n        ref: \"input\",\n        attrs: {\n          value: _vm.displayValue,\n          placeholder: _vm.placeholder,\n          disabled: _vm.inputNumberDisabled,\n          size: _vm.inputNumberSize,\n          max: _vm.max,\n          min: _vm.min,\n          name: _vm.name,\n          label: _vm.label\n        },\n        on: {\n          blur: _vm.handleBlur,\n          focus: _vm.handleFocus,\n          input: _vm.handleInput,\n          change: _vm.handleInputChange\n        },\n        nativeOn: {\n          keydown: [\n            function($event) {\n              if (\n                !(\"button\" in $event) &&\n                _vm._k($event.keyCode, \"up\", 38, $event.key, [\"Up\", \"ArrowUp\"])\n              ) {\n                return null\n              }\n              $event.preventDefault()\n              return _vm.increase($event)\n            },\n            function($event) {\n              if (\n                !(\"button\" in $event) &&\n                _vm._k($event.keyCode, \"down\", 40, $event.key, [\n                  \"Down\",\n                  \"ArrowDown\"\n                ])\n              ) {\n                return null\n              }\n              $event.preventDefault()\n              return _vm.decrease($event)\n            }\n          ]\n        }\n      })\n    ],\n    1\n  )\n}\nvar staticRenderFns = []\nrender._withStripped = true\n\n\n// CONCATENATED MODULE: ./packages/input-number/src/input-number.vue?vue&type=template&id=42f8cf66&\n\n// EXTERNAL MODULE: external \"element-ui/lib/input\"\nvar input_ = __webpack_require__(10);\nvar input_default = /*#__PURE__*/__webpack_require__.n(input_);\n\n// EXTERNAL MODULE: external \"element-ui/lib/mixins/focus\"\nvar focus_ = __webpack_require__(22);\nvar focus_default = /*#__PURE__*/__webpack_require__.n(focus_);\n\n// EXTERNAL MODULE: ./src/directives/repeat-click.js\nvar repeat_click = __webpack_require__(30);\n\n// CONCATENATED MODULE: ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib??vue-loader-options!./packages/input-number/src/input-number.vue?vue&type=script&lang=js&\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n//\n\n\n\n\n\n/* harmony default export */ var input_numbervue_type_script_lang_js_ = ({\n  name: 'ElInputNumber',\n  mixins: [focus_default()('input')],\n  inject: {\n    elForm: {\n      default: ''\n    },\n    elFormItem: {\n      default: ''\n    }\n  },\n  directives: {\n    repeatClick: repeat_click[\"a\" /* default */]\n  },\n  components: {\n    ElInput: input_default.a\n  },\n  props: {\n    step: {\n      type: Number,\n      default: 1\n    },\n    stepStrictly: {\n      type: Boolean,\n      default: false\n    },\n    max: {\n      type: Number,\n      default: Infinity\n    },\n    min: {\n      type: Number,\n      default: -Infinity\n    },\n    value: {},\n    disabled: Boolean,\n    size: String,\n    controls: {\n      type: Boolean,\n      default: true\n    },\n    controlsPosition: {\n      type: String,\n      default: ''\n    },\n    name: String,\n    label: String,\n    placeholder: String,\n    precision: {\n      type: Number,\n      validator: function validator(val) {\n        return val >= 0 && val === parseInt(val, 10);\n      }\n    }\n  },\n  data: function data() {\n    return {\n      currentValue: 0,\n      userInput: null\n    };\n  },\n\n  watch: {\n    value: {\n      immediate: true,\n      handler: function handler(value) {\n        var newVal = value === undefined ? value : Number(value);\n        if (newVal !== undefined) {\n          if (isNaN(newVal)) {\n            return;\n          }\n\n          if (this.stepStrictly) {\n            var stepPrecision = this.getPrecision(this.step);\n            var precisionFactor = Math.pow(10, stepPrecision);\n            newVal = Math.round(newVal / this.step) * precisionFactor * this.step / precisionFactor;\n          }\n\n          if (this.precision !== undefined) {\n            newVal = this.toPrecision(newVal, this.precision);\n          }\n        }\n        if (newVal >= this.max) newVal = this.max;\n        if (newVal <= this.min) newVal = this.min;\n        this.currentValue = newVal;\n        this.userInput = null;\n        this.$emit('input', newVal);\n      }\n    }\n  },\n  computed: {\n    minDisabled: function minDisabled() {\n      return this._decrease(this.value, this.step) < this.min;\n    },\n    maxDisabled: function maxDisabled() {\n      return this._increase(this.value, this.step) > this.max;\n    },\n    numPrecision: function numPrecision() {\n      var value = this.value,\n          step = this.step,\n          getPrecision = this.getPrecision,\n          precision = this.precision;\n\n      var stepPrecision = getPrecision(step);\n      if (precision !== undefined) {\n        if (stepPrecision > precision) {\n          console.warn('[Element Warn][InputNumber]precision should not be less than the decimal places of step');\n        }\n        return precision;\n      } else {\n        return Math.max(getPrecision(value), stepPrecision);\n      }\n    },\n    controlsAtRight: function controlsAtRight() {\n      return this.controls && this.controlsPosition === 'right';\n    },\n    _elFormItemSize: function _elFormItemSize() {\n      return (this.elFormItem || {}).elFormItemSize;\n    },\n    inputNumberSize: function inputNumberSize() {\n      return this.size || this._elFormItemSize || (this.$ELEMENT || {}).size;\n    },\n    inputNumberDisabled: function inputNumberDisabled() {\n      return this.disabled || !!(this.elForm || {}).disabled;\n    },\n    displayValue: function displayValue() {\n      if (this.userInput !== null) {\n        return this.userInput;\n      }\n\n      var currentValue = this.currentValue;\n\n      if (typeof currentValue === 'number') {\n        if (this.stepStrictly) {\n          var stepPrecision = this.getPrecision(this.step);\n          var precisionFactor = Math.pow(10, stepPrecision);\n          currentValue = Math.round(currentValue / this.step) * precisionFactor * this.step / precisionFactor;\n        }\n\n        if (this.precision !== undefined) {\n          currentValue = currentValue.toFixed(this.precision);\n        }\n      }\n\n      return currentValue;\n    }\n  },\n  methods: {\n    toPrecision: function toPrecision(num, precision) {\n      if (precision === undefined) precision = this.numPrecision;\n      return parseFloat(Math.round(num * Math.pow(10, precision)) / Math.pow(10, precision));\n    },\n    getPrecision: function getPrecision(value) {\n      if (value === undefined) return 0;\n      var valueString = value.toString();\n      var dotPosition = valueString.indexOf('.');\n      var precision = 0;\n      if (dotPosition !== -1) {\n        precision = valueString.length - dotPosition - 1;\n      }\n      return precision;\n    },\n    _increase: function _increase(val, step) {\n      if (typeof val !== 'number' && val !== undefined) return this.currentValue;\n\n      var precisionFactor = Math.pow(10, this.numPrecision);\n      // Solve the accuracy problem of JS decimal calculation by converting the value to integer.\n      return this.toPrecision((precisionFactor * val + precisionFactor * step) / precisionFactor);\n    },\n    _decrease: function _decrease(val, step) {\n      if (typeof val !== 'number' && val !== undefined) return this.currentValue;\n\n      var precisionFactor = Math.pow(10, this.numPrecision);\n\n      return this.toPrecision((precisionFactor * val - precisionFactor * step) / precisionFactor);\n    },\n    increase: function increase() {\n      if (this.inputNumberDisabled || this.maxDisabled) return;\n      var value = this.value || 0;\n      var newVal = this._increase(value, this.step);\n      this.setCurrentValue(newVal);\n    },\n    decrease: function decrease() {\n      if (this.inputNumberDisabled || this.minDisabled) return;\n      var value = this.value || 0;\n      var newVal = this._decrease(value, this.step);\n      this.setCurrentValue(newVal);\n    },\n    handleBlur: function handleBlur(event) {\n      this.$emit('blur', event);\n    },\n    handleFocus: function handleFocus(event) {\n      this.$emit('focus', event);\n    },\n    setCurrentValue: function setCurrentValue(newVal) {\n      var oldVal = this.currentValue;\n      if (typeof newVal === 'number' && this.precision !== undefined) {\n        newVal = this.toPrecision(newVal, this.precision);\n      }\n      if (newVal >= this.max) newVal = this.max;\n      if (newVal <= this.min) newVal = this.min;\n      if (oldVal === newVal) return;\n      this.userInput = null;\n      this.$emit('input', newVal);\n      this.$emit('change', newVal, oldVal);\n      this.currentValue = newVal;\n    },\n    handleInput: function handleInput(value) {\n      this.userInput = value;\n    },\n    handleInputChange: function handleInputChange(value) {\n      var newVal = value === '' ? undefined : Number(value);\n      if (!isNaN(newVal) || value === '') {\n        this.setCurrentValue(newVal);\n      }\n      this.userInput = null;\n    },\n    select: function select() {\n      this.$refs.input.select();\n    }\n  },\n  mounted: function mounted() {\n    var innerInput = this.$refs.input.$refs.input;\n    innerInput.setAttribute('role', 'spinbutton');\n    innerInput.setAttribute('aria-valuemax', this.max);\n    innerInput.setAttribute('aria-valuemin', this.min);\n    innerInput.setAttribute('aria-valuenow', this.currentValue);\n    innerInput.setAttribute('aria-disabled', this.inputNumberDisabled);\n  },\n  updated: function updated() {\n    if (!this.$refs || !this.$refs.input) return;\n    var innerInput = this.$refs.input.$refs.input;\n    innerInput.setAttribute('aria-valuenow', this.currentValue);\n  }\n});\n// CONCATENATED MODULE: ./packages/input-number/src/input-number.vue?vue&type=script&lang=js&\n /* harmony default export */ var src_input_numbervue_type_script_lang_js_ = (input_numbervue_type_script_lang_js_); \n// EXTERNAL MODULE: ./node_modules/vue-loader/lib/runtime/componentNormalizer.js\nvar componentNormalizer = __webpack_require__(0);\n\n// CONCATENATED MODULE: ./packages/input-number/src/input-number.vue\n\n\n\n\n\n/* normalize component */\n\nvar component = Object(componentNormalizer[\"a\" /* default */])(\n  src_input_numbervue_type_script_lang_js_,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  null,\n  null\n  \n)\n\n/* hot reload */\nif (false) { var api; }\ncomponent.options.__file = \"packages/input-number/src/input-number.vue\"\n/* harmony default export */ var input_number = (component.exports);\n// CONCATENATED MODULE: ./packages/input-number/index.js\n\n\n/* istanbul ignore next */\ninput_number.install = function (Vue) {\n  Vue.component(input_number.name, input_number);\n};\n\n/* harmony default export */ var packages_input_number = __webpack_exports__[\"default\"] = (input_number);\n\n/***/ }),\n\n/***/ 2:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/utils/dom\");\n\n/***/ }),\n\n/***/ 22:\n/***/ (function(module, exports) {\n\nmodule.exports = require(\"element-ui/lib/mixins/focus\");\n\n/***/ }),\n\n/***/ 30:\n/***/ (function(module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n/* harmony import */ var element_ui_src_utils_dom__WEBPACK_IMPORTED_MODULE_0__ = 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"del" : method] = function(uri, options, callback) {\n options = initParams(uri, options, callback)\n options.method = method.toUpperCase()\n return _createXHR(options)\n }\n})\n\nfunction forEachArray(array, iterator) {\n for (var i = 0; i < array.length; i++) {\n iterator(array[i])\n }\n}\n\nfunction isEmpty(obj){\n for(var i in obj){\n if(obj.hasOwnProperty(i)) return false\n }\n return true\n}\n\nfunction initParams(uri, options, callback) {\n var params = uri\n\n if (isFunction(options)) {\n callback = options\n if (typeof uri === "string") {\n params = {uri:uri}\n }\n } else {\n params = xtend(options, {uri: uri})\n }\n\n params.callback = callback\n return params\n}\n\nfunction createXHR(uri, options, callback) {\n options = initParams(uri, options, callback)\n return _createXHR(options)\n}\n\nfunction _createXHR(options) {\n if(typeof options.callback === "undefined"){\n throw new Error("callback argument missing")\n }\n\n var called = false\n var callback = function cbOnce(err, response, body){\n if(!called){\n called = true\n options.callback(err, response, body)\n }\n }\n\n function readystatechange() {\n if (xhr.readyState === 4) {\n setTimeout(loadFunc, 0)\n }\n }\n\n function getBody() {\n // Chrome with requestType=blob throws errors arround when even testing access to responseText\n var body = undefined\n\n if (xhr.response) {\n body = xhr.response\n } else {\n body = xhr.responseText || getXml(xhr)\n }\n\n if (isJson) {\n try {\n body = JSON.parse(body)\n } catch (e) {}\n }\n\n return body\n }\n\n function errorFunc(evt) {\n clearTimeout(timeoutTimer)\n if(!(evt instanceof Error)){\n evt = new Error("" + (evt || "Unknown XMLHttpRequest Error") )\n }\n evt.statusCode = 0\n return callback(evt, failureResponse)\n }\n\n // will load the data & process the response in a special response object\n function loadFunc() {\n if (aborted) return\n var status\n clearTimeout(timeoutTimer)\n if(options.useXDR && xhr.status===undefined) {\n //IE8 CORS 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options.headers || {}\n var sync = !!options.sync\n var isJson = false\n var timeoutTimer\n var failureResponse = {\n body: undefined,\n headers: {},\n statusCode: 0,\n method: method,\n url: uri,\n rawRequest: xhr\n }\n\n if ("json" in options && options.json !== false) {\n isJson = true\n headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json") //Don\'t override existing accept header declared by user\n if (method !== "GET" && method !== "HEAD") {\n headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json") //Don\'t override existing accept header declared by user\n body = JSON.stringify(options.json === true ? body : options.json)\n }\n }\n\n xhr.onreadystatechange = readystatechange\n xhr.onload = loadFunc\n xhr.onerror = errorFunc\n // IE9 must have onprogress be set to a unique function.\n xhr.onprogress = function () {\n // IE must die\n }\n xhr.onabort = function(){\n aborted = true;\n }\n xhr.ontimeout = errorFunc\n xhr.open(method, uri, !sync, options.username, options.password)\n //has to be after open\n if(!sync) {\n xhr.withCredentials = !!options.withCredentials\n }\n // Cannot set timeout with sync request\n // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n // both npm\'s request and jquery 1.x use this kind of timeout, so this is being consistent\n if (!sync && options.timeout > 0 ) {\n timeoutTimer = setTimeout(function(){\n if (aborted) return\n aborted = true//IE9 may still call readystatechange\n xhr.abort("timeout")\n var e = new Error("XMLHttpRequest timeout")\n e.code = "ETIMEDOUT"\n errorFunc(e)\n }, options.timeout )\n }\n\n if (xhr.setRequestHeader) {\n for(key in headers){\n if(headers.hasOwnProperty(key)){\n xhr.setRequestHeader(key, headers[key])\n }\n }\n } else if (options.headers && !isEmpty(options.headers)) {\n throw new Error("Headers cannot be set on an XDomainRequest object")\n }\n\n if ("responseType" in options) {\n xhr.responseType = options.responseType\n }\n\n if ("beforeSend" in options &&\n typeof options.beforeSend === "function"\n ) {\n options.beforeSend(xhr)\n }\n\n // Microsoft Edge browser sends "undefined" when send is called with undefined value.\n // XMLHttpRequest spec says to pass null as body to indicate no body\n // See https://github.com/naugtur/xhr/issues/100.\n xhr.send(body || null)\n\n return xhr\n\n\n}\n\nfunction getXml(xhr) {\n if (xhr.responseType === "document") {\n return xhr.responseXML\n }\n var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror"\n if (xhr.responseType === "" && !firefoxBugTakenEffect) {\n return xhr.responseXML\n }\n\n return null\n}\n\nfunction noop() {}\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"1Xk4.js","sources":["webpack:///./node_modules/xhr/index.js?d579"],"sourcesContent":["\"use strict\";\nvar window = require(\"global/window\")\nvar isFunction = require(\"is-function\")\nvar parseHeaders = require(\"parse-headers\")\nvar xtend = require(\"xtend\")\n\nmodule.exports = createXHR\ncreateXHR.XMLHttpRequest = window.XMLHttpRequest || noop\ncreateXHR.XDomainRequest = \"withCredentials\" in (new createXHR.XMLHttpRequest()) ? createXHR.XMLHttpRequest : window.XDomainRequest\n\nforEachArray([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function(method) {\n    createXHR[method === \"delete\" ? \"del\" : method] = function(uri, options, callback) {\n        options = initParams(uri, options, callback)\n        options.method = method.toUpperCase()\n        return _createXHR(options)\n    }\n})\n\nfunction forEachArray(array, iterator) {\n    for (var i = 0; i < array.length; i++) {\n        iterator(array[i])\n    }\n}\n\nfunction isEmpty(obj){\n    for(var i in obj){\n        if(obj.hasOwnProperty(i)) return false\n    }\n    return true\n}\n\nfunction initParams(uri, options, callback) {\n    var params = uri\n\n    if (isFunction(options)) {\n        callback = options\n        if (typeof uri === \"string\") {\n            params = {uri:uri}\n        }\n    } else {\n        params = xtend(options, {uri: uri})\n    }\n\n    params.callback = callback\n    return params\n}\n\nfunction createXHR(uri, options, callback) {\n    options = initParams(uri, options, callback)\n    return _createXHR(options)\n}\n\nfunction _createXHR(options) {\n    if(typeof options.callback === \"undefined\"){\n        throw new Error(\"callback argument missing\")\n    }\n\n    var called = false\n    var callback = function cbOnce(err, response, body){\n        if(!called){\n            called = true\n            options.callback(err, response, body)\n        }\n    }\n\n    function readystatechange() {\n        if (xhr.readyState === 4) {\n            setTimeout(loadFunc, 0)\n        }\n    }\n\n    function getBody() {\n        // Chrome with requestType=blob throws errors arround when even testing access to responseText\n        var body = undefined\n\n        if (xhr.response) {\n            body = xhr.response\n        } else {\n            body = xhr.responseText || getXml(xhr)\n        }\n\n        if (isJson) {\n            try {\n                body = JSON.parse(body)\n            } catch (e) {}\n        }\n\n        return body\n    }\n\n    function errorFunc(evt) {\n        clearTimeout(timeoutTimer)\n        if(!(evt instanceof Error)){\n            evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\") )\n        }\n        evt.statusCode = 0\n        return callback(evt, failureResponse)\n    }\n\n    // will load the data & process the response in a special response object\n    function loadFunc() {\n        if (aborted) return\n        var status\n        clearTimeout(timeoutTimer)\n        if(options.useXDR && xhr.status===undefined) {\n            //IE8 CORS GET successful response doesn't have a status field, but body is fine\n            status = 200\n        } else {\n            status = (xhr.status === 1223 ? 204 : xhr.status)\n        }\n        var response = failureResponse\n        var err = null\n\n        if (status !== 0){\n            response = {\n                body: getBody(),\n                statusCode: status,\n                method: method,\n                headers: {},\n                url: uri,\n                rawRequest: xhr\n            }\n            if(xhr.getAllResponseHeaders){ //remember xhr can in fact be XDR for CORS in IE\n                response.headers = parseHeaders(xhr.getAllResponseHeaders())\n            }\n        } else {\n            err = new Error(\"Internal XMLHttpRequest Error\")\n        }\n        return callback(err, response, response.body)\n    }\n\n    var xhr = options.xhr || null\n\n    if (!xhr) {\n        if (options.cors || options.useXDR) {\n            xhr = new createXHR.XDomainRequest()\n        }else{\n            xhr = new createXHR.XMLHttpRequest()\n        }\n    }\n\n    var key\n    var aborted\n    var uri = xhr.url = options.uri || options.url\n    var method = xhr.method = options.method || \"GET\"\n    var body = options.body || options.data\n    var headers = xhr.headers = options.headers || {}\n    var sync = !!options.sync\n    var isJson = false\n    var timeoutTimer\n    var failureResponse = {\n        body: undefined,\n        headers: {},\n        statusCode: 0,\n        method: method,\n        url: uri,\n        rawRequest: xhr\n    }\n\n    if (\"json\" in options && options.json !== false) {\n        isJson = true\n        headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\") //Don't override existing accept header declared by user\n        if (method !== \"GET\" && method !== \"HEAD\") {\n            headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\") //Don't override existing accept header declared by user\n            body = JSON.stringify(options.json === true ? body : options.json)\n        }\n    }\n\n    xhr.onreadystatechange = readystatechange\n    xhr.onload = loadFunc\n    xhr.onerror = errorFunc\n    // IE9 must have onprogress be set to a unique function.\n    xhr.onprogress = function () {\n        // IE must die\n    }\n    xhr.onabort = function(){\n        aborted = true;\n    }\n    xhr.ontimeout = errorFunc\n    xhr.open(method, uri, !sync, options.username, options.password)\n    //has to be after open\n    if(!sync) {\n        xhr.withCredentials = !!options.withCredentials\n    }\n    // Cannot set timeout with sync request\n    // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n    // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n    if (!sync && options.timeout > 0 ) {\n        timeoutTimer = setTimeout(function(){\n            if (aborted) return\n            aborted = true//IE9 may still call readystatechange\n            xhr.abort(\"timeout\")\n            var e = new Error(\"XMLHttpRequest timeout\")\n            e.code = \"ETIMEDOUT\"\n            errorFunc(e)\n        }, options.timeout )\n    }\n\n    if (xhr.setRequestHeader) {\n        for(key in headers){\n            if(headers.hasOwnProperty(key)){\n                xhr.setRequestHeader(key, headers[key])\n            }\n        }\n    } else if (options.headers && !isEmpty(options.headers)) {\n        throw new Error(\"Headers cannot be set on an XDomainRequest object\")\n    }\n\n    if (\"responseType\" in options) {\n        xhr.responseType = options.responseType\n    }\n\n    if (\"beforeSend\" in options &&\n        typeof options.beforeSend === \"function\"\n    ) {\n        options.beforeSend(xhr)\n    }\n\n    // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n    // XMLHttpRequest spec says to pass null as body to indicate no body\n 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* Copyright (c) 2001-2002 Naoki Shibata\n * Copyright (c) 2000-2003 Takehiro Tominaga\n * Copyright (c) 2000-2008 Robert Hegemann\n * Copyright (c) 2000-2005 Gabriel Bouvigne\n * Copyright (c) 2000-2005 Alexander Leidinger\n *\n * This library is free software; you can redistribute it and/or\n * modify it under the terms of the GNU Lesser General Public\n * License as published by the Free Software Foundation; either\n * version 2 of the License, or (at your option) any later version.\n *\n * This library is distributed in the hope that it will be useful,\n * but WITHOUT ANY WARRANTY; without even the implied warranty of\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n * Library General Public License for more details.\n *\n * You should have received a copy of the GNU Lesser General Public\n * License along with this library; if not, write to the\n * Free Software Foundation, Inc., 59 Temple Place - Suite 330,\n * Boston, MA 02111-1307, USA.\n */\n\n/* $Id: PsyModel.java,v 1.27 2011/05/24 20:48:06 kenchis Exp $ */\n\n\n/*\n PSYCHO ACOUSTICS\n\n\n This routine computes the psycho acoustics, delayed by one granule.\n\n Input: buffer of PCM data (1024 samples).\n\n This window should be centered over the 576 sample granule window.\n The routine will compute the psycho acoustics for\n this granule, but return the psycho acoustics computed\n for the *previous* granule. This is because the block\n type of the previous granule can only be determined\n after we have computed the psycho acoustics for the following\n granule.\n\n Output: maskings and energies for each scalefactor band.\n block type, PE, and some correlation measures.\n The PE is used by CBR modes to determine if extra bits\n from the bit reservoir should be used. The correlation\n measures are used to determine mid/side or regular stereo.\n */\n/*\n Notation:\n\n barks: a non-linear frequency scale. Mapping from frequency to\n barks is given by freq2bark()\n\n scalefactor bands: The spectrum (frequencies) are broken into\n SBMAX "scalefactor bands". Thes bands\n are determined by the MPEG ISO spec. In\n the noise shaping/quantization code, we allocate\n bits among the partition bands to achieve the\n best possible quality\n\n partition bands: The spectrum is also broken into about\n 64 "partition bands". Each partition\n band is about .34 barks wide. There are about 2-5\n partition bands for each scalefactor band.\n\n LAME computes all psycho acoustic information for each partition\n band. Then at the end of the computations, this information\n is mapped to scalefactor bands. The energy in each scalefactor\n band is taken as the sum of the energy in all partition bands\n which overlap the scalefactor band. The maskings can be computed\n in the same way (and thus represent the average masking in that band)\n or by taking the minmum value multiplied by the number of\n partition bands used (which represents a minimum masking in that band).\n */\n/*\n The general outline is as follows:\n\n 1. compute the energy in each partition band\n 2. compute the tonality in each partition band\n 3. compute the strength of each partion band "masker"\n 4. compute the masking (via the spreading function applied to each masker)\n 5. Modifications for mid/side masking.\n\n Each partition band is considiered a "masker". The strength\n of the i\'th masker in band j is given by:\n\n s3(bark(i)-bark(j))*strength(i)\n\n The strength of the masker is a function of the energy and tonality.\n The more tonal, the less masking. LAME uses a simple linear formula\n (controlled by NMT and TMN) which says the strength is given by the\n energy divided by a linear function of the tonality.\n */\n/*\n s3() is the "spreading function". It is given by a formula\n determined via listening tests.\n\n The total masking in the j\'th partition band is the sum over\n all maskings i. It is thus given by the convolution of\n the strength with s3(), the "spreading function."\n\n masking(j) = sum_over_i s3(i-j)*strength(i) = s3 o strength\n\n where "o" = convolution operator. s3 is given by a formula determined\n via listening tests. It is normalized so that s3 o 1 = 1.\n\n Note: instead of a simple convolution, LAME also has the\n option of using "additive masking"\n\n The most critical part is step 2, computing the tonality of each\n partition band. LAME has two tonality estimators. The first\n is based on the ISO spec, and measures how predictiable the\n signal is over time. The more predictable, the more tonal.\n The second measure is based on looking at the spectrum of\n a single granule. The more peaky the spectrum, the more\n tonal. By most indications, the latter approach is better.\n\n Finally, in step 5, the maskings for the mid and side\n channel are possibly increased. Under certain circumstances,\n noise in the mid & side channels is assumed to also\n be masked by strong maskers in the L or R channels.\n\n\n Other data computed by the psy-model:\n\n ms_ratio side-channel / mid-channel masking ratio (for previous granule)\n ms_ratio_next side-channel / mid-channel masking ratio for this granule\n\n percep_entropy[2] L and R values (prev granule) of PE - A measure of how\n much pre-echo is in the previous granule\n percep_entropy_MS[2] mid and side channel values (prev granule) of percep_entropy\n energy[4] L,R,M,S energy in each channel, prev granule\n blocktype_d[2] block type to use for previous granule\n */\n//package mp3;\n\n//import java.util.Arrays;\nvar common = __webpack_require__("Dkd2");\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\nvar FFT = __webpack_require__("vHDO");\nvar Encoder = __webpack_require__("E2dQ");\n\nfunction PsyModel() {\n var MPEGMode = __webpack_require__("eWXl")\n var fft = new FFT();\n\n var LOG10 = 2.30258509299404568402;\n\n var rpelev = 2;\n var rpelev2 = 16;\n var rpelev_s = 2;\n var rpelev2_s = 16;\n\n /* size of each partition band, in barks: */\n var DELBARK = .34;\n\n /* tuned for output level (sensitive to energy scale) */\n var VO_SCALE = (1. / (14752 * 14752) / (Encoder.BLKSIZE / 2));\n\n var temporalmask_sustain_sec = 0.01;\n\n var NS_PREECHO_ATT0 = 0.8;\n var NS_PREECHO_ATT1 = 0.6;\n var NS_PREECHO_ATT2 = 0.3;\n\n var NS_MSFIX = 3.5;\n\n var NSATTACKTHRE = 4.4;\n var NSATTACKTHRE_S = 25;\n\n var NSFIRLEN = 21;\n\n /* size of each partition band, in barks: */\n var LN_TO_LOG10 = 0.2302585093;\n\n function NON_LINEAR_SCALE_ENERGY(x) {\n return x;\n }\n\n /**\n *
\n     *       L3psycho_anal.  Compute psycho acoustics.\n     *\n     *       Data returned to the calling program must be delayed by one\n     *       granule.\n     *\n     *       This is done in two places.\n     *       If we do not need to know the blocktype, the copying\n     *       can be done here at the top of the program: we copy the data for\n     *       the last granule (computed during the last call) before it is\n     *       overwritten with the new data.  It looks like this:\n     *\n     *       0. static psymodel_data\n     *       1. calling_program_data = psymodel_data\n     *       2. compute psymodel_data\n     *\n     *       For data which needs to know the blocktype, the copying must be\n     *       done at the end of this loop, and the old values must be saved:\n     *\n     *       0. static psymodel_data_old\n     *       1. compute psymodel_data\n     *       2. compute possible block type of this granule\n     *       3. compute final block type of previous granule based on #2.\n     *       4. calling_program_data = psymodel_data_old\n     *       5. psymodel_data_old = psymodel_data\n     *     psycho_loudness_approx\n     *       jd - 2001 mar 12\n     *    in:  energy   - BLKSIZE/2 elements of frequency magnitudes ^ 2\n     *         gfp      - uses out_samplerate, ATHtype (also needed for ATHformula)\n     *    returns: loudness^2 approximation, a positive value roughly tuned for a value\n     *             of 1.0 for signals near clipping.\n     *    notes:   When calibrated, feeding this function binary white noise at sample\n     *             values +32767 or -32768 should return values that approach 3.\n     *             ATHformula is used to approximate an equal loudness curve.\n     *    future:  Data indicates that the shape of the equal loudness curve varies\n     *             with intensity.  This function might be improved by using an equal\n     *             loudness curve shaped for typical playback levels (instead of the\n     *             ATH, that is shaped for the threshold).  A flexible realization might\n     *             simply bend the existing ATH curve to achieve the desired shape.\n     *             However, the potential gain may not be enough to justify an effort.\n     * 
\n */\n function psycho_loudness_approx(energy, gfc) {\n var loudness_power = 0.0;\n /* apply weights to power in freq. bands */\n for (var i = 0; i < Encoder.BLKSIZE / 2; ++i)\n loudness_power += energy[i] * gfc.ATH.eql_w[i];\n loudness_power *= VO_SCALE;\n\n return loudness_power;\n }\n\n function compute_ffts(gfp, fftenergy, fftenergy_s, wsamp_l, wsamp_lPos, wsamp_s, wsamp_sPos, gr_out, chn, buffer, bufPos) {\n var gfc = gfp.internal_flags;\n if (chn < 2) {\n fft.fft_long(gfc, wsamp_l[wsamp_lPos], chn, buffer, bufPos);\n fft.fft_short(gfc, wsamp_s[wsamp_sPos], chn, buffer, bufPos);\n }\n /* FFT data for mid and side channel is derived from L & R */\n else if (chn == 2) {\n for (var j = Encoder.BLKSIZE - 1; j >= 0; --j) {\n var l = wsamp_l[wsamp_lPos + 0][j];\n var r = wsamp_l[wsamp_lPos + 1][j];\n wsamp_l[wsamp_lPos + 0][j] = (l + r) * Util.SQRT2 * 0.5;\n wsamp_l[wsamp_lPos + 1][j] = (l - r) * Util.SQRT2 * 0.5;\n }\n for (var b = 2; b >= 0; --b) {\n for (var j = Encoder.BLKSIZE_s - 1; j >= 0; --j) {\n var l = wsamp_s[wsamp_sPos + 0][b][j];\n var r = wsamp_s[wsamp_sPos + 1][b][j];\n wsamp_s[wsamp_sPos + 0][b][j] = (l + r) * Util.SQRT2 * 0.5;\n wsamp_s[wsamp_sPos + 1][b][j] = (l - r) * Util.SQRT2 * 0.5;\n }\n }\n }\n\n /*********************************************************************\n * compute energies\n *********************************************************************/\n fftenergy[0] = NON_LINEAR_SCALE_ENERGY(wsamp_l[wsamp_lPos + 0][0]);\n fftenergy[0] *= fftenergy[0];\n\n for (var j = Encoder.BLKSIZE / 2 - 1; j >= 0; --j) {\n var re = (wsamp_l[wsamp_lPos + 0])[Encoder.BLKSIZE / 2 - j];\n var im = (wsamp_l[wsamp_lPos + 0])[Encoder.BLKSIZE / 2 + j];\n fftenergy[Encoder.BLKSIZE / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n * re + im * im) * 0.5);\n }\n for (var b = 2; b >= 0; --b) {\n fftenergy_s[b][0] = (wsamp_s[wsamp_sPos + 0])[b][0];\n fftenergy_s[b][0] *= fftenergy_s[b][0];\n for (var j = Encoder.BLKSIZE_s / 2 - 1; j >= 0; --j) {\n var re = (wsamp_s[wsamp_sPos + 0])[b][Encoder.BLKSIZE_s\n / 2 - j];\n var im = (wsamp_s[wsamp_sPos + 0])[b][Encoder.BLKSIZE_s\n / 2 + j];\n fftenergy_s[b][Encoder.BLKSIZE_s / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n * re + im * im) * 0.5);\n }\n }\n /* total energy */\n {\n var totalenergy = 0.0;\n for (var j = 11; j < Encoder.HBLKSIZE; j++)\n totalenergy += fftenergy[j];\n\n gfc.tot_ener[chn] = totalenergy;\n }\n\n if (gfp.analysis) {\n for (var j = 0; j < Encoder.HBLKSIZE; j++) {\n gfc.pinfo.energy[gr_out][chn][j] = gfc.pinfo.energy_save[chn][j];\n gfc.pinfo.energy_save[chn][j] = fftenergy[j];\n }\n gfc.pinfo.pe[gr_out][chn] = gfc.pe[chn];\n }\n\n /*********************************************************************\n * compute loudness approximation (used for ATH auto-level adjustment)\n *********************************************************************/\n if (gfp.athaa_loudapprox == 2 && chn < 2) {\n // no loudness for mid/side ch\n gfc.loudness_sq[gr_out][chn] = gfc.loudness_sq_save[chn];\n gfc.loudness_sq_save[chn] = psycho_loudness_approx(fftenergy, gfc);\n }\n }\n\n /* mask_add optimization */\n /* init the limit values used to avoid computing log in mask_add when it is not necessary */\n\n /**\n *
\n     *  For example, with i = 10*log10(m2/m1)/10*16         (= log10(m2/m1)*16)\n     *\n     * abs(i)>8 is equivalent (as i is an integer) to\n     * abs(i)>=9\n     * i>=9 || i<=-9\n     * equivalent to (as i is the biggest integer smaller than log10(m2/m1)*16\n     * or the smallest integer bigger than log10(m2/m1)*16 depending on the sign of log10(m2/m1)*16)\n     * log10(m2/m1)>=9/16 || log10(m2/m1)<=-9/16\n     * exp10 is strictly increasing thus this is equivalent to\n     * m2/m1 >= 10^(9/16) || m2/m1<=10^(-9/16) which are comparisons to constants\n     * 
\n */\n\n /**\n * as in if(i>8)\n */\n var I1LIMIT = 8;\n /**\n * as in if(i>24) . changed 23\n */\n var I2LIMIT = 23;\n /**\n * as in if(m<15)\n */\n var MLIMIT = 15;\n\n var ma_max_i1;\n var ma_max_i2;\n var ma_max_m;\n\n /**\n * This is the masking table:
\n * According to tonality, values are going from 0dB (TMN) to 9.3dB (NMT).
\n * After additive masking computation, 8dB are added, so final values are\n * going from 8dB to 17.3dB\n *\n * pow(10, -0.0..-0.6)\n */\n var tab = [1.0, 0.79433, 0.63096, 0.63096,\n 0.63096, 0.63096, 0.63096, 0.25119, 0.11749];\n\n function init_mask_add_max_values() {\n ma_max_i1 = Math.pow(10, (I1LIMIT + 1) / 16.0);\n ma_max_i2 = Math.pow(10, (I2LIMIT + 1) / 16.0);\n ma_max_m = Math.pow(10, (MLIMIT) / 10.0);\n }\n\n var table1 = [3.3246 * 3.3246,\n 3.23837 * 3.23837, 3.15437 * 3.15437, 3.00412 * 3.00412,\n 2.86103 * 2.86103, 2.65407 * 2.65407, 2.46209 * 2.46209,\n 2.284 * 2.284, 2.11879 * 2.11879, 1.96552 * 1.96552,\n 1.82335 * 1.82335, 1.69146 * 1.69146, 1.56911 * 1.56911,\n 1.46658 * 1.46658, 1.37074 * 1.37074, 1.31036 * 1.31036,\n 1.25264 * 1.25264, 1.20648 * 1.20648, 1.16203 * 1.16203,\n 1.12765 * 1.12765, 1.09428 * 1.09428, 1.0659 * 1.0659,\n 1.03826 * 1.03826, 1.01895 * 1.01895, 1];\n\n var table2 = [1.33352 * 1.33352,\n 1.35879 * 1.35879, 1.38454 * 1.38454, 1.39497 * 1.39497,\n 1.40548 * 1.40548, 1.3537 * 1.3537, 1.30382 * 1.30382,\n 1.22321 * 1.22321, 1.14758 * 1.14758, 1];\n\n var table3 = [2.35364 * 2.35364,\n 2.29259 * 2.29259, 2.23313 * 2.23313, 2.12675 * 2.12675,\n 2.02545 * 2.02545, 1.87894 * 1.87894, 1.74303 * 1.74303,\n 1.61695 * 1.61695, 1.49999 * 1.49999, 1.39148 * 1.39148,\n 1.29083 * 1.29083, 1.19746 * 1.19746, 1.11084 * 1.11084,\n 1.03826 * 1.03826];\n\n /**\n * addition of simultaneous masking Naoki Shibata 2000/7\n */\n function mask_add(m1, m2, kk, b, gfc, shortblock) {\n var ratio;\n\n if (m2 > m1) {\n if (m2 < (m1 * ma_max_i2))\n ratio = m2 / m1;\n else\n return (m1 + m2);\n } else {\n if (m1 >= (m2 * ma_max_i2))\n return (m1 + m2);\n ratio = m1 / m2;\n }\n\n /* Should always be true, just checking */\n assert(m1 >= 0);\n assert(m2 >= 0);\n\n m1 += m2;\n //if (((long)(b + 3) & 0xffffffff) <= 3 + 3) {\n if ((b + 3) <= 3 + 3) {\n /* approximately, 1 bark = 3 partitions */\n /* 65% of the cases */\n /* originally \'if(i > 8)\' */\n if (ratio >= ma_max_i1) {\n /* 43% of the total */\n return m1;\n }\n\n /* 22% of the total */\n var i = 0 | (Util.FAST_LOG10_X(ratio, 16.0));\n return m1 * table2[i];\n }\n\n /**\n *
\n         * m<15 equ log10((m1+m2)/gfc.ATH.cb[k])<1.5\n         * equ (m1+m2)/gfc.ATH.cb[k]<10^1.5\n         * equ (m1+m2)<10^1.5 * gfc.ATH.cb[k]\n         * 
\n */\n var i = 0 | Util.FAST_LOG10_X(ratio, 16.0);\n if (shortblock != 0) {\n m2 = gfc.ATH.cb_s[kk] * gfc.ATH.adjust;\n } else {\n m2 = gfc.ATH.cb_l[kk] * gfc.ATH.adjust;\n }\n assert(m2 >= 0);\n if (m1 < ma_max_m * m2) {\n /* 3% of the total */\n /* Originally if (m > 0) { */\n if (m1 > m2) {\n var f, r;\n\n f = 1.0;\n if (i <= 13)\n f = table3[i];\n\n r = Util.FAST_LOG10_X(m1 / m2, 10.0 / 15.0);\n return m1 * ((table1[i] - f) * r + f);\n }\n\n if (i > 13)\n return m1;\n\n return m1 * table3[i];\n }\n\n /* 10% of total */\n return m1 * table1[i];\n }\n\n var table2_ = [1.33352 * 1.33352,\n 1.35879 * 1.35879, 1.38454 * 1.38454, 1.39497 * 1.39497,\n 1.40548 * 1.40548, 1.3537 * 1.3537, 1.30382 * 1.30382,\n 1.22321 * 1.22321, 1.14758 * 1.14758, 1];\n\n /**\n * addition of simultaneous masking Naoki Shibata 2000/7\n */\n function vbrpsy_mask_add(m1, m2, b) {\n var ratio;\n\n if (m1 < 0) {\n m1 = 0;\n }\n if (m2 < 0) {\n m2 = 0;\n }\n if (m1 <= 0) {\n return m2;\n }\n if (m2 <= 0) {\n return m1;\n }\n if (m2 > m1) {\n ratio = m2 / m1;\n } else {\n ratio = m1 / m2;\n }\n if (-2 <= b && b <= 2) {\n /* approximately, 1 bark = 3 partitions */\n /* originally \'if(i > 8)\' */\n if (ratio >= ma_max_i1) {\n return m1 + m2;\n } else {\n var i = 0 | (Util.FAST_LOG10_X(ratio, 16.0));\n return (m1 + m2) * table2_[i];\n }\n }\n if (ratio < ma_max_i2) {\n return m1 + m2;\n }\n if (m1 < m2) {\n m1 = m2;\n }\n return m1;\n }\n\n /**\n * compute interchannel masking effects\n */\n function calc_interchannel_masking(gfp, ratio) {\n var gfc = gfp.internal_flags;\n if (gfc.channels_out > 1) {\n for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n var l = gfc.thm[0].l[sb];\n var r = gfc.thm[1].l[sb];\n gfc.thm[0].l[sb] += r * ratio;\n gfc.thm[1].l[sb] += l * ratio;\n }\n for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n for (var sblock = 0; sblock < 3; sblock++) {\n var l = gfc.thm[0].s[sb][sblock];\n var r = gfc.thm[1].s[sb][sblock];\n gfc.thm[0].s[sb][sblock] += r * ratio;\n gfc.thm[1].s[sb][sblock] += l * ratio;\n }\n }\n }\n }\n\n /**\n * compute M/S thresholds from Johnston & Ferreira 1992 ICASSP paper\n */\n function msfix1(gfc) {\n for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n /* use this fix if L & R masking differs by 2db or less */\n /* if db = 10*log10(x2/x1) < 2 */\n /* if (x2 < 1.58*x1) { */\n if (gfc.thm[0].l[sb] > 1.58 * gfc.thm[1].l[sb]\n || gfc.thm[1].l[sb] > 1.58 * gfc.thm[0].l[sb])\n continue;\n var mld = gfc.mld_l[sb] * gfc.en[3].l[sb];\n var rmid = Math.max(gfc.thm[2].l[sb],\n Math.min(gfc.thm[3].l[sb], mld));\n\n mld = gfc.mld_l[sb] * gfc.en[2].l[sb];\n var rside = Math.max(gfc.thm[3].l[sb],\n Math.min(gfc.thm[2].l[sb], mld));\n gfc.thm[2].l[sb] = rmid;\n gfc.thm[3].l[sb] = rside;\n }\n\n for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n for (var sblock = 0; sblock < 3; sblock++) {\n if (gfc.thm[0].s[sb][sblock] > 1.58 * gfc.thm[1].s[sb][sblock]\n || gfc.thm[1].s[sb][sblock] > 1.58 * gfc.thm[0].s[sb][sblock])\n continue;\n var mld = gfc.mld_s[sb] * gfc.en[3].s[sb][sblock];\n var rmid = Math.max(gfc.thm[2].s[sb][sblock],\n Math.min(gfc.thm[3].s[sb][sblock], mld));\n\n mld = gfc.mld_s[sb] * gfc.en[2].s[sb][sblock];\n var rside = Math.max(gfc.thm[3].s[sb][sblock],\n Math.min(gfc.thm[2].s[sb][sblock], mld));\n\n gfc.thm[2].s[sb][sblock] = rmid;\n gfc.thm[3].s[sb][sblock] = rside;\n }\n }\n }\n\n /**\n * Adjust M/S maskings if user set "msfix"\n *\n * Naoki Shibata 2000\n */\n function ns_msfix(gfc, msfix, athadjust) {\n var msfix2 = msfix;\n var athlower = Math.pow(10, athadjust);\n\n msfix *= 2.0;\n msfix2 *= 2.0;\n for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n var thmLR, thmM, thmS, ath;\n ath = (gfc.ATH.cb_l[gfc.bm_l[sb]]) * athlower;\n thmLR = Math.min(Math.max(gfc.thm[0].l[sb], ath),\n Math.max(gfc.thm[1].l[sb], ath));\n thmM = Math.max(gfc.thm[2].l[sb], ath);\n thmS = Math.max(gfc.thm[3].l[sb], ath);\n if (thmLR * msfix < thmM + thmS) {\n var f = thmLR * msfix2 / (thmM + thmS);\n thmM *= f;\n thmS *= f;\n assert(thmM + thmS > 0);\n }\n gfc.thm[2].l[sb] = Math.min(thmM, gfc.thm[2].l[sb]);\n gfc.thm[3].l[sb] = Math.min(thmS, gfc.thm[3].l[sb]);\n }\n\n athlower *= ( Encoder.BLKSIZE_s / Encoder.BLKSIZE);\n for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n for (var sblock = 0; sblock < 3; sblock++) {\n var thmLR, thmM, thmS, ath;\n ath = (gfc.ATH.cb_s[gfc.bm_s[sb]]) * athlower;\n thmLR = Math.min(Math.max(gfc.thm[0].s[sb][sblock], ath),\n Math.max(gfc.thm[1].s[sb][sblock], ath));\n thmM = Math.max(gfc.thm[2].s[sb][sblock], ath);\n thmS = Math.max(gfc.thm[3].s[sb][sblock], ath);\n\n if (thmLR * msfix < thmM + thmS) {\n var f = thmLR * msfix / (thmM + thmS);\n thmM *= f;\n thmS *= f;\n assert(thmM + thmS > 0);\n }\n gfc.thm[2].s[sb][sblock] = Math.min(gfc.thm[2].s[sb][sblock],\n thmM);\n gfc.thm[3].s[sb][sblock] = Math.min(gfc.thm[3].s[sb][sblock],\n thmS);\n }\n }\n }\n\n /**\n * short block threshold calculation (part 2)\n *\n * partition band bo_s[sfb] is at the transition from scalefactor band sfb\n * to the next one sfb+1; enn and thmm have to be split between them\n */\n function convert_partition2scalefac_s(gfc, eb, thr, chn, sblock) {\n var sb, b;\n var enn = 0.0;\n var thmm = 0.0;\n for (sb = b = 0; sb < Encoder.SBMAX_s; ++b, ++sb) {\n var bo_s_sb = gfc.bo_s[sb];\n var npart_s = gfc.npart_s;\n var b_lim = bo_s_sb < npart_s ? bo_s_sb : npart_s;\n while (b < b_lim) {\n assert(eb[b] >= 0);\n // iff failed, it may indicate some index error elsewhere\n assert(thr[b] >= 0);\n enn += eb[b];\n thmm += thr[b];\n b++;\n }\n gfc.en[chn].s[sb][sblock] = enn;\n gfc.thm[chn].s[sb][sblock] = thmm;\n\n if (b >= npart_s) {\n ++sb;\n break;\n }\n assert(eb[b] >= 0);\n // iff failed, it may indicate some index error elsewhere\n assert(thr[b] >= 0);\n {\n /* at transition sfb . sfb+1 */\n var w_curr = gfc.PSY.bo_s_weight[sb];\n var w_next = 1.0 - w_curr;\n enn = w_curr * eb[b];\n thmm = w_curr * thr[b];\n gfc.en[chn].s[sb][sblock] += enn;\n gfc.thm[chn].s[sb][sblock] += thmm;\n enn = w_next * eb[b];\n thmm = w_next * thr[b];\n }\n }\n /* zero initialize the rest */\n for (; sb < Encoder.SBMAX_s; ++sb) {\n gfc.en[chn].s[sb][sblock] = 0;\n gfc.thm[chn].s[sb][sblock] = 0;\n }\n }\n\n /**\n * longblock threshold calculation (part 2)\n */\n function convert_partition2scalefac_l(gfc, eb, thr, chn) {\n var sb, b;\n var enn = 0.0;\n var thmm = 0.0;\n for (sb = b = 0; sb < Encoder.SBMAX_l; ++b, ++sb) {\n var bo_l_sb = gfc.bo_l[sb];\n var npart_l = gfc.npart_l;\n var b_lim = bo_l_sb < npart_l ? bo_l_sb : npart_l;\n while (b < b_lim) {\n assert(eb[b] >= 0);\n // iff failed, it may indicate some index error elsewhere\n assert(thr[b] >= 0);\n enn += eb[b];\n thmm += thr[b];\n b++;\n }\n gfc.en[chn].l[sb] = enn;\n gfc.thm[chn].l[sb] = thmm;\n\n if (b >= npart_l) {\n ++sb;\n break;\n }\n assert(eb[b] >= 0);\n assert(thr[b] >= 0);\n {\n /* at transition sfb . sfb+1 */\n var w_curr = gfc.PSY.bo_l_weight[sb];\n var w_next = 1.0 - w_curr;\n enn = w_curr * eb[b];\n thmm = w_curr * thr[b];\n gfc.en[chn].l[sb] += enn;\n gfc.thm[chn].l[sb] += thmm;\n enn = w_next * eb[b];\n thmm = w_next * thr[b];\n }\n }\n /* zero initialize the rest */\n for (; sb < Encoder.SBMAX_l; ++sb) {\n gfc.en[chn].l[sb] = 0;\n gfc.thm[chn].l[sb] = 0;\n }\n }\n\n function compute_masking_s(gfp, fftenergy_s, eb, thr, chn, sblock) {\n var gfc = gfp.internal_flags;\n var j, b;\n\n for (b = j = 0; b < gfc.npart_s; ++b) {\n var ebb = 0, m = 0;\n var n = gfc.numlines_s[b];\n for (var i = 0; i < n; ++i, ++j) {\n var el = fftenergy_s[sblock][j];\n ebb += el;\n if (m < el)\n m = el;\n }\n eb[b] = ebb;\n }\n assert(b == gfc.npart_s);\n assert(j == 129);\n for (j = b = 0; b < gfc.npart_s; b++) {\n var kk = gfc.s3ind_s[b][0];\n var ecb = gfc.s3_ss[j++] * eb[kk];\n ++kk;\n while (kk <= gfc.s3ind_s[b][1]) {\n ecb += gfc.s3_ss[j] * eb[kk];\n ++j;\n ++kk;\n }\n\n { /* limit calculated threshold by previous granule */\n var x = rpelev_s * gfc.nb_s1[chn][b];\n thr[b] = Math.min(ecb, x);\n }\n if (gfc.blocktype_old[chn & 1] == Encoder.SHORT_TYPE) {\n /* limit calculated threshold by even older granule */\n var x = rpelev2_s * gfc.nb_s2[chn][b];\n var y = thr[b];\n thr[b] = Math.min(x, y);\n }\n\n gfc.nb_s2[chn][b] = gfc.nb_s1[chn][b];\n gfc.nb_s1[chn][b] = ecb;\n assert(thr[b] >= 0);\n }\n for (; b <= Encoder.CBANDS; ++b) {\n eb[b] = 0;\n thr[b] = 0;\n }\n }\n\n function block_type_set(gfp, uselongblock, blocktype_d, blocktype) {\n var gfc = gfp.internal_flags;\n\n if (gfp.short_blocks == ShortBlock.short_block_coupled\n /* force both channels to use the same block type */\n /* this is necessary if the frame is to be encoded in ms_stereo. */\n /* But even without ms_stereo, FhG does this */\n && !(uselongblock[0] != 0 && uselongblock[1] != 0))\n uselongblock[0] = uselongblock[1] = 0;\n\n /*\n * update the blocktype of the previous granule, since it depends on\n * what happend in this granule\n */\n for (var chn = 0; chn < gfc.channels_out; chn++) {\n blocktype[chn] = Encoder.NORM_TYPE;\n /* disable short blocks */\n if (gfp.short_blocks == ShortBlock.short_block_dispensed)\n uselongblock[chn] = 1;\n if (gfp.short_blocks == ShortBlock.short_block_forced)\n uselongblock[chn] = 0;\n\n if (uselongblock[chn] != 0) {\n /* no attack : use long blocks */\n assert(gfc.blocktype_old[chn] != Encoder.START_TYPE);\n if (gfc.blocktype_old[chn] == Encoder.SHORT_TYPE)\n blocktype[chn] = Encoder.STOP_TYPE;\n } else {\n /* attack : use short blocks */\n blocktype[chn] = Encoder.SHORT_TYPE;\n if (gfc.blocktype_old[chn] == Encoder.NORM_TYPE) {\n gfc.blocktype_old[chn] = Encoder.START_TYPE;\n }\n if (gfc.blocktype_old[chn] == Encoder.STOP_TYPE)\n gfc.blocktype_old[chn] = Encoder.SHORT_TYPE;\n }\n\n blocktype_d[chn] = gfc.blocktype_old[chn];\n // value returned to calling program\n gfc.blocktype_old[chn] = blocktype[chn];\n // save for next call to l3psy_anal\n }\n }\n\n function NS_INTERP(x, y, r) {\n /* was pow((x),(r))*pow((y),1-(r)) */\n if (r >= 1.0) {\n /* 99.7% of the time */\n return x;\n }\n if (r <= 0.0)\n return y;\n if (y > 0.0) {\n /* rest of the time */\n return (Math.pow(x / y, r) * y);\n }\n /* never happens */\n return 0.0;\n }\n\n /**\n * these values are tuned only for 44.1kHz...\n */\n var regcoef_s = [11.8, 13.6, 17.2, 32, 46.5,\n 51.3, 57.5, 67.1, 71.5, 84.6, 97.6, 130,\n /* 255.8 */\n ];\n\n function pecalc_s(mr, masking_lower) {\n var pe_s = 1236.28 / 4;\n for (var sb = 0; sb < Encoder.SBMAX_s - 1; sb++) {\n for (var sblock = 0; sblock < 3; sblock++) {\n var thm = mr.thm.s[sb][sblock];\n assert(sb < regcoef_s.length);\n if (thm > 0.0) {\n var x = thm * masking_lower;\n var en = mr.en.s[sb][sblock];\n if (en > x) {\n if (en > x * 1e10) {\n pe_s += regcoef_s[sb] * (10.0 * LOG10);\n } else {\n assert(x > 0);\n pe_s += regcoef_s[sb] * Util.FAST_LOG10(en / x);\n }\n }\n }\n }\n }\n\n return pe_s;\n }\n\n /**\n * these values are tuned only for 44.1kHz...\n */\n var regcoef_l = [6.8, 5.8, 5.8, 6.4, 6.5, 9.9,\n 12.1, 14.4, 15, 18.9, 21.6, 26.9, 34.2, 40.2, 46.8, 56.5,\n 60.7, 73.9, 85.7, 93.4, 126.1,\n /* 241.3 */\n ];\n\n function pecalc_l(mr, masking_lower) {\n var pe_l = 1124.23 / 4;\n for (var sb = 0; sb < Encoder.SBMAX_l - 1; sb++) {\n var thm = mr.thm.l[sb];\n assert(sb < regcoef_l.length);\n if (thm > 0.0) {\n var x = thm * masking_lower;\n var en = mr.en.l[sb];\n if (en > x) {\n if (en > x * 1e10) {\n pe_l += regcoef_l[sb] * (10.0 * LOG10);\n } else {\n assert(x > 0);\n pe_l += regcoef_l[sb] * Util.FAST_LOG10(en / x);\n }\n }\n }\n }\n return pe_l;\n }\n\n function calc_energy(gfc, fftenergy, eb, max, avg) {\n var b, j;\n\n for (b = j = 0; b < gfc.npart_l; ++b) {\n var ebb = 0, m = 0;\n var i;\n for (i = 0; i < gfc.numlines_l[b]; ++i, ++j) {\n var el = fftenergy[j];\n assert(el >= 0);\n ebb += el;\n if (m < el)\n m = el;\n }\n eb[b] = ebb;\n max[b] = m;\n avg[b] = ebb * gfc.rnumlines_l[b];\n assert(gfc.rnumlines_l[b] >= 0);\n assert(ebb >= 0);\n assert(eb[b] >= 0);\n assert(max[b] >= 0);\n assert(avg[b] >= 0);\n }\n }\n\n function calc_mask_index_l(gfc, max, avg, mask_idx) {\n var last_tab_entry = tab.length - 1;\n var b = 0;\n var a = avg[b] + avg[b + 1];\n assert(a >= 0);\n if (a > 0.0) {\n var m = max[b];\n if (m < max[b + 1])\n m = max[b + 1];\n assert((gfc.numlines_l[b] + gfc.numlines_l[b + 1] - 1) > 0);\n a = 20.0 * (m * 2.0 - a)\n / (a * (gfc.numlines_l[b] + gfc.numlines_l[b + 1] - 1));\n var k = 0 | a;\n if (k > last_tab_entry)\n k = last_tab_entry;\n mask_idx[b] = k;\n } else {\n mask_idx[b] = 0;\n }\n\n for (b = 1; b < gfc.npart_l - 1; b++) {\n a = avg[b - 1] + avg[b] + avg[b + 1];\n assert(a >= 0);\n if (a > 0.0) {\n var m = max[b - 1];\n if (m < max[b])\n m = max[b];\n if (m < max[b + 1])\n m = max[b + 1];\n assert((gfc.numlines_l[b - 1] + gfc.numlines_l[b] + gfc.numlines_l[b + 1] - 1) > 0);\n a = 20.0\n * (m * 3.0 - a)\n / (a * (gfc.numlines_l[b - 1] + gfc.numlines_l[b]\n + gfc.numlines_l[b + 1] - 1));\n var k = 0 | a;\n if (k > last_tab_entry)\n k = last_tab_entry;\n mask_idx[b] = k;\n } else {\n mask_idx[b] = 0;\n }\n }\n assert(b > 0);\n assert(b == gfc.npart_l - 1);\n\n a = avg[b - 1] + avg[b];\n assert(a >= 0);\n if (a > 0.0) {\n var m = max[b - 1];\n if (m < max[b])\n m = max[b];\n assert((gfc.numlines_l[b - 1] + gfc.numlines_l[b] - 1) > 0);\n a = 20.0 * (m * 2.0 - a)\n / (a * (gfc.numlines_l[b - 1] + gfc.numlines_l[b] - 1));\n var k = 0 | a;\n if (k > last_tab_entry)\n k = last_tab_entry;\n mask_idx[b] = k;\n } else {\n mask_idx[b] = 0;\n }\n assert(b == (gfc.npart_l - 1));\n }\n\n var fircoef = [\n -8.65163e-18 * 2, -0.00851586 * 2, -6.74764e-18 * 2, 0.0209036 * 2,\n -3.36639e-17 * 2, -0.0438162 * 2, -1.54175e-17 * 2, 0.0931738 * 2,\n -5.52212e-17 * 2, -0.313819 * 2\n ];\n\n this.L3psycho_anal_ns = function (gfp, buffer, bufPos, gr_out, masking_ratio, masking_MS_ratio, percep_entropy, percep_MS_entropy, energy, blocktype_d) {\n /*\n * to get a good cache performance, one has to think about the sequence,\n * in which the variables are used.\n */\n var gfc = gfp.internal_flags;\n\n /* fft and energy calculation */\n var wsamp_L = new_float_n([2, Encoder.BLKSIZE]);\n var wsamp_S = new_float_n([2, 3, Encoder.BLKSIZE_s]);\n\n /* convolution */\n var eb_l = new_float(Encoder.CBANDS + 1);\n var eb_s = new_float(Encoder.CBANDS + 1);\n var thr = new_float(Encoder.CBANDS + 2);\n\n /* block type */\n var blocktype = new_int(2), uselongblock = new_int(2);\n\n /* usual variables like loop indices, etc.. */\n var numchn, chn;\n var b, i, j, k;\n var sb, sblock;\n\n /* variables used for --nspsytune */\n var ns_hpfsmpl = new_float_n([2, 576]);\n var pcfact;\n var mask_idx_l = new_int(Encoder.CBANDS + 2), mask_idx_s = new_int(Encoder.CBANDS + 2);\n\n Arrays.fill(mask_idx_s, 0);\n\n numchn = gfc.channels_out;\n /* chn=2 and 3 = Mid and Side channels */\n if (gfp.mode == MPEGMode.JOINT_STEREO)\n numchn = 4;\n\n if (gfp.VBR == VbrMode.vbr_off)\n pcfact = gfc.ResvMax == 0 ? 0 : ( gfc.ResvSize)\n / gfc.ResvMax * 0.5;\n else if (gfp.VBR == VbrMode.vbr_rh || gfp.VBR == VbrMode.vbr_mtrh\n || gfp.VBR == VbrMode.vbr_mt) {\n pcfact = 0.6;\n } else\n pcfact = 1.0;\n\n /**********************************************************************\n * Apply HPF of fs/4 to the input signal. This is used for attack\n * detection / handling.\n **********************************************************************/\n /* Don\'t copy the input buffer into a temporary buffer */\n /* unroll the loop 2 times */\n for (chn = 0; chn < gfc.channels_out; chn++) {\n /* apply high pass filter of fs/4 */\n var firbuf = buffer[chn];\n var firbufPos = bufPos + 576 - 350 - NSFIRLEN + 192;\n assert(fircoef.length == ((NSFIRLEN - 1) / 2));\n for (i = 0; i < 576; i++) {\n var sum1, sum2;\n sum1 = firbuf[firbufPos + i + 10];\n sum2 = 0.0;\n for (j = 0; j < ((NSFIRLEN - 1) / 2) - 1; j += 2) {\n sum1 += fircoef[j]\n * (firbuf[firbufPos + i + j] + firbuf[firbufPos + i\n + NSFIRLEN - j]);\n sum2 += fircoef[j + 1]\n * (firbuf[firbufPos + i + j + 1] + firbuf[firbufPos\n + i + NSFIRLEN - j - 1]);\n }\n ns_hpfsmpl[chn][i] = sum1 + sum2;\n }\n masking_ratio[gr_out][chn].en.assign(gfc.en[chn]);\n masking_ratio[gr_out][chn].thm.assign(gfc.thm[chn]);\n if (numchn > 2) {\n /* MS maskings */\n /* percep_MS_entropy [chn-2] = gfc . pe [chn]; */\n masking_MS_ratio[gr_out][chn].en.assign(gfc.en[chn + 2]);\n masking_MS_ratio[gr_out][chn].thm.assign(gfc.thm[chn + 2]);\n }\n }\n\n for (chn = 0; chn < numchn; chn++) {\n var wsamp_l;\n var wsamp_s;\n var en_subshort = new_float(12);\n var en_short = [0, 0, 0, 0];\n var attack_intensity = new_float(12);\n var ns_uselongblock = 1;\n var attackThreshold;\n var max = new_float(Encoder.CBANDS), avg = new_float(Encoder.CBANDS);\n var ns_attacks = [0, 0, 0, 0];\n var fftenergy = new_float(Encoder.HBLKSIZE);\n var fftenergy_s = new_float_n([3, Encoder.HBLKSIZE_s]);\n\n /*\n * rh 20040301: the following loops do access one off the limits so\n * I increase the array dimensions by one and initialize the\n * accessed values to zero\n */\n assert(gfc.npart_s <= Encoder.CBANDS);\n assert(gfc.npart_l <= Encoder.CBANDS);\n\n /***************************************************************\n * determine the block type (window type)\n ***************************************************************/\n /* calculate energies of each sub-shortblocks */\n for (i = 0; i < 3; i++) {\n en_subshort[i] = gfc.nsPsy.last_en_subshort[chn][i + 6];\n assert(gfc.nsPsy.last_en_subshort[chn][i + 4] > 0);\n attack_intensity[i] = en_subshort[i]\n / gfc.nsPsy.last_en_subshort[chn][i + 4];\n en_short[0] += en_subshort[i];\n }\n\n if (chn == 2) {\n for (i = 0; i < 576; i++) {\n var l, r;\n l = ns_hpfsmpl[0][i];\n r = ns_hpfsmpl[1][i];\n ns_hpfsmpl[0][i] = l + r;\n ns_hpfsmpl[1][i] = l - r;\n }\n }\n {\n var pf = ns_hpfsmpl[chn & 1];\n var pfPos = 0;\n for (i = 0; i < 9; i++) {\n var pfe = pfPos + 576 / 9;\n var p = 1.;\n for (; pfPos < pfe; pfPos++)\n if (p < Math.abs(pf[pfPos]))\n p = Math.abs(pf[pfPos]);\n\n gfc.nsPsy.last_en_subshort[chn][i] = en_subshort[i + 3] = p;\n en_short[1 + i / 3] += p;\n if (p > en_subshort[i + 3 - 2]) {\n assert(en_subshort[i + 3 - 2] > 0);\n p = p / en_subshort[i + 3 - 2];\n } else if (en_subshort[i + 3 - 2] > p * 10.0) {\n assert(p > 0);\n p = en_subshort[i + 3 - 2] / (p * 10.0);\n } else\n p = 0.0;\n attack_intensity[i + 3] = p;\n }\n }\n\n if (gfp.analysis) {\n var x = attack_intensity[0];\n for (i = 1; i < 12; i++)\n if (x < attack_intensity[i])\n x = attack_intensity[i];\n gfc.pinfo.ers[gr_out][chn] = gfc.pinfo.ers_save[chn];\n gfc.pinfo.ers_save[chn] = x;\n }\n\n /* compare energies between sub-shortblocks */\n attackThreshold = (chn == 3) ? gfc.nsPsy.attackthre_s\n : gfc.nsPsy.attackthre;\n for (i = 0; i < 12; i++)\n if (0 == ns_attacks[i / 3]\n && attack_intensity[i] > attackThreshold)\n ns_attacks[i / 3] = (i % 3) + 1;\n\n /*\n * should have energy change between short blocks, in order to avoid\n * periodic signals\n */\n for (i = 1; i < 4; i++) {\n var ratio;\n if (en_short[i - 1] > en_short[i]) {\n assert(en_short[i] > 0);\n ratio = en_short[i - 1] / en_short[i];\n } else {\n assert(en_short[i - 1] > 0);\n ratio = en_short[i] / en_short[i - 1];\n }\n if (ratio < 1.7) {\n ns_attacks[i] = 0;\n if (i == 1)\n ns_attacks[0] = 0;\n }\n }\n\n if (ns_attacks[0] != 0 && gfc.nsPsy.lastAttacks[chn] != 0)\n ns_attacks[0] = 0;\n\n if (gfc.nsPsy.lastAttacks[chn] == 3\n || (ns_attacks[0] + ns_attacks[1] + ns_attacks[2] + ns_attacks[3]) != 0) {\n ns_uselongblock = 0;\n\n if (ns_attacks[1] != 0 && ns_attacks[0] != 0)\n ns_attacks[1] = 0;\n if (ns_attacks[2] != 0 && ns_attacks[1] != 0)\n ns_attacks[2] = 0;\n if (ns_attacks[3] != 0 && ns_attacks[2] != 0)\n ns_attacks[3] = 0;\n }\n\n if (chn < 2) {\n uselongblock[chn] = ns_uselongblock;\n } else {\n if (ns_uselongblock == 0) {\n uselongblock[0] = uselongblock[1] = 0;\n }\n }\n\n /*\n * there is a one granule delay. Copy maskings computed last call\n * into masking_ratio to return to calling program.\n */\n energy[chn] = gfc.tot_ener[chn];\n\n /*********************************************************************\n * compute FFTs\n *********************************************************************/\n wsamp_s = wsamp_S;\n wsamp_l = wsamp_L;\n compute_ffts(gfp, fftenergy, fftenergy_s, wsamp_l, (chn & 1),\n wsamp_s, (chn & 1), gr_out, chn, buffer, bufPos);\n\n /*********************************************************************\n * Calculate the energy and the tonality of each partition.\n *********************************************************************/\n calc_energy(gfc, fftenergy, eb_l, max, avg);\n calc_mask_index_l(gfc, max, avg, mask_idx_l);\n /* compute masking thresholds for short blocks */\n for (sblock = 0; sblock < 3; sblock++) {\n var enn, thmm;\n compute_masking_s(gfp, fftenergy_s, eb_s, thr, chn, sblock);\n convert_partition2scalefac_s(gfc, eb_s, thr, chn, sblock);\n /**** short block pre-echo control ****/\n for (sb = 0; sb < Encoder.SBMAX_s; sb++) {\n thmm = gfc.thm[chn].s[sb][sblock];\n\n thmm *= NS_PREECHO_ATT0;\n if (ns_attacks[sblock] >= 2 || ns_attacks[sblock + 1] == 1) {\n var idx = (sblock != 0) ? sblock - 1 : 2;\n var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n NS_PREECHO_ATT1 * pcfact);\n thmm = Math.min(thmm, p);\n }\n\n if (ns_attacks[sblock] == 1) {\n var idx = (sblock != 0) ? sblock - 1 : 2;\n var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n NS_PREECHO_ATT2 * pcfact);\n thmm = Math.min(thmm, p);\n } else if ((sblock != 0 && ns_attacks[sblock - 1] == 3)\n || (sblock == 0 && gfc.nsPsy.lastAttacks[chn] == 3)) {\n var idx = (sblock != 2) ? sblock + 1 : 0;\n var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n NS_PREECHO_ATT2 * pcfact);\n thmm = Math.min(thmm, p);\n }\n\n /* pulse like signal detection for fatboy.wav and so on */\n enn = en_subshort[sblock * 3 + 3]\n + en_subshort[sblock * 3 + 4]\n + en_subshort[sblock * 3 + 5];\n if (en_subshort[sblock * 3 + 5] * 6 < enn) {\n thmm *= 0.5;\n if (en_subshort[sblock * 3 + 4] * 6 < enn)\n thmm *= 0.5;\n }\n\n gfc.thm[chn].s[sb][sblock] = thmm;\n }\n }\n gfc.nsPsy.lastAttacks[chn] = ns_attacks[2];\n\n /*********************************************************************\n * convolve the partitioned energy and unpredictability with the\n * spreading function, s3_l[b][k]\n ********************************************************************/\n k = 0;\n {\n for (b = 0; b < gfc.npart_l; b++) {\n /*\n * convolve the partitioned energy with the spreading\n * function\n */\n var kk = gfc.s3ind[b][0];\n var eb2 = eb_l[kk] * tab[mask_idx_l[kk]];\n var ecb = gfc.s3_ll[k++] * eb2;\n while (++kk <= gfc.s3ind[b][1]) {\n eb2 = eb_l[kk] * tab[mask_idx_l[kk]];\n ecb = mask_add(ecb, gfc.s3_ll[k++] * eb2, kk, kk - b,\n gfc, 0);\n }\n ecb *= 0.158489319246111;\n /* pow(10,-0.8) */\n\n /**** long block pre-echo control ****/\n /**\n *
\n                     * dont use long block pre-echo control if previous granule was\n                     * a short block.  This is to avoid the situation:\n                     * frame0:  quiet (very low masking)\n                     * frame1:  surge  (triggers short blocks)\n                     * frame2:  regular frame.  looks like pre-echo when compared to\n                     *          frame0, but all pre-echo was in frame1.\n                     * 
\n */\n /*\n * chn=0,1 L and R channels\n *\n * chn=2,3 S and M channels.\n */\n\n if (gfc.blocktype_old[chn & 1] == Encoder.SHORT_TYPE)\n thr[b] = ecb;\n else\n thr[b] = NS_INTERP(\n Math.min(ecb, Math.min(rpelev\n * gfc.nb_1[chn][b], rpelev2\n * gfc.nb_2[chn][b])), ecb, pcfact);\n\n gfc.nb_2[chn][b] = gfc.nb_1[chn][b];\n gfc.nb_1[chn][b] = ecb;\n }\n }\n for (; b <= Encoder.CBANDS; ++b) {\n eb_l[b] = 0;\n thr[b] = 0;\n }\n /* compute masking thresholds for long blocks */\n convert_partition2scalefac_l(gfc, eb_l, thr, chn);\n }\n /* end loop over chn */\n\n if (gfp.mode == MPEGMode.STEREO || gfp.mode == MPEGMode.JOINT_STEREO) {\n if (gfp.interChRatio > 0.0) {\n calc_interchannel_masking(gfp, gfp.interChRatio);\n }\n }\n\n if (gfp.mode == MPEGMode.JOINT_STEREO) {\n var msfix;\n msfix1(gfc);\n msfix = gfp.msfix;\n if (Math.abs(msfix) > 0.0)\n ns_msfix(gfc, msfix, gfp.ATHlower * gfc.ATH.adjust);\n }\n\n /***************************************************************\n * determine final block type\n ***************************************************************/\n block_type_set(gfp, uselongblock, blocktype_d, blocktype);\n\n /*********************************************************************\n * compute the value of PE to return ... no delay and advance\n *********************************************************************/\n for (chn = 0; chn < numchn; chn++) {\n var ppe;\n var ppePos = 0;\n var type;\n var mr;\n\n if (chn > 1) {\n ppe = percep_MS_entropy;\n ppePos = -2;\n type = Encoder.NORM_TYPE;\n if (blocktype_d[0] == Encoder.SHORT_TYPE\n || blocktype_d[1] == Encoder.SHORT_TYPE)\n type = Encoder.SHORT_TYPE;\n mr = masking_MS_ratio[gr_out][chn - 2];\n } else {\n ppe = percep_entropy;\n ppePos = 0;\n type = blocktype_d[chn];\n mr = masking_ratio[gr_out][chn];\n }\n\n if (type == Encoder.SHORT_TYPE)\n ppe[ppePos + chn] = pecalc_s(mr, gfc.masking_lower);\n else\n ppe[ppePos + chn] = pecalc_l(mr, gfc.masking_lower);\n\n if (gfp.analysis)\n gfc.pinfo.pe[gr_out][chn] = ppe[ppePos + chn];\n\n }\n return 0;\n }\n\n function vbrpsy_compute_fft_l(gfp, buffer, bufPos, chn, gr_out, fftenergy, wsamp_l, wsamp_lPos) {\n var gfc = gfp.internal_flags;\n if (chn < 2) {\n fft.fft_long(gfc, wsamp_l[wsamp_lPos], chn, buffer, bufPos);\n } else if (chn == 2) {\n /* FFT data for mid and side channel is derived from L & R */\n for (var j = Encoder.BLKSIZE - 1; j >= 0; --j) {\n var l = wsamp_l[wsamp_lPos + 0][j];\n var r = wsamp_l[wsamp_lPos + 1][j];\n wsamp_l[wsamp_lPos + 0][j] = (l + r) * Util.SQRT2 * 0.5;\n wsamp_l[wsamp_lPos + 1][j] = (l - r) * Util.SQRT2 * 0.5;\n }\n }\n\n /*********************************************************************\n * compute energies\n *********************************************************************/\n fftenergy[0] = NON_LINEAR_SCALE_ENERGY(wsamp_l[wsamp_lPos + 0][0]);\n fftenergy[0] *= fftenergy[0];\n\n for (var j = Encoder.BLKSIZE / 2 - 1; j >= 0; --j) {\n var re = wsamp_l[wsamp_lPos + 0][Encoder.BLKSIZE / 2 - j];\n var im = wsamp_l[wsamp_lPos + 0][Encoder.BLKSIZE / 2 + j];\n fftenergy[Encoder.BLKSIZE / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n * re + im * im) * 0.5);\n }\n /* total energy */\n {\n var totalenergy = 0.0;\n for (var j = 11; j < Encoder.HBLKSIZE; j++)\n totalenergy += fftenergy[j];\n\n gfc.tot_ener[chn] = totalenergy;\n }\n\n if (gfp.analysis) {\n for (var j = 0; j < Encoder.HBLKSIZE; j++) {\n gfc.pinfo.energy[gr_out][chn][j] = gfc.pinfo.energy_save[chn][j];\n gfc.pinfo.energy_save[chn][j] = fftenergy[j];\n }\n gfc.pinfo.pe[gr_out][chn] = gfc.pe[chn];\n }\n }\n\n function vbrpsy_compute_fft_s(gfp, buffer, bufPos, chn, sblock, fftenergy_s, wsamp_s, wsamp_sPos) {\n var gfc = gfp.internal_flags;\n\n if (sblock == 0 && chn < 2) {\n fft.fft_short(gfc, wsamp_s[wsamp_sPos], chn, buffer, bufPos);\n }\n if (chn == 2) {\n /* FFT data for mid and side channel is derived from L & R */\n for (var j = Encoder.BLKSIZE_s - 1; j >= 0; --j) {\n var l = wsamp_s[wsamp_sPos + 0][sblock][j];\n var r = wsamp_s[wsamp_sPos + 1][sblock][j];\n wsamp_s[wsamp_sPos + 0][sblock][j] = (l + r) * Util.SQRT2 * 0.5;\n wsamp_s[wsamp_sPos + 1][sblock][j] = (l - r) * Util.SQRT2 * 0.5;\n }\n }\n\n /*********************************************************************\n * compute energies\n *********************************************************************/\n fftenergy_s[sblock][0] = wsamp_s[wsamp_sPos + 0][sblock][0];\n fftenergy_s[sblock][0] *= fftenergy_s[sblock][0];\n for (var j = Encoder.BLKSIZE_s / 2 - 1; j >= 0; --j) {\n var re = wsamp_s[wsamp_sPos + 0][sblock][Encoder.BLKSIZE_s / 2 - j];\n var im = wsamp_s[wsamp_sPos + 0][sblock][Encoder.BLKSIZE_s / 2 + j];\n fftenergy_s[sblock][Encoder.BLKSIZE_s / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n * re + im * im) * 0.5);\n }\n }\n\n /**\n * compute loudness approximation (used for ATH auto-level adjustment)\n */\n function vbrpsy_compute_loudness_approximation_l(gfp, gr_out, chn, fftenergy) {\n var gfc = gfp.internal_flags;\n if (gfp.athaa_loudapprox == 2 && chn < 2) {\n // no loudness for mid/side ch\n gfc.loudness_sq[gr_out][chn] = gfc.loudness_sq_save[chn];\n gfc.loudness_sq_save[chn] = psycho_loudness_approx(fftenergy, gfc);\n }\n }\n\n var fircoef_ = [-8.65163e-18 * 2,\n -0.00851586 * 2, -6.74764e-18 * 2, 0.0209036 * 2,\n -3.36639e-17 * 2, -0.0438162 * 2, -1.54175e-17 * 2,\n 0.0931738 * 2, -5.52212e-17 * 2, -0.313819 * 2];\n\n /**\n * Apply HPF of fs/4 to the input signal. This is used for attack detection\n * / handling.\n */\n function vbrpsy_attack_detection(gfp, buffer, bufPos, gr_out, masking_ratio, masking_MS_ratio, energy, sub_short_factor, ns_attacks, uselongblock) {\n var ns_hpfsmpl = new_float_n([2, 576]);\n var gfc = gfp.internal_flags;\n var n_chn_out = gfc.channels_out;\n /* chn=2 and 3 = Mid and Side channels */\n var n_chn_psy = (gfp.mode == MPEGMode.JOINT_STEREO) ? 4 : n_chn_out;\n /* Don\'t copy the input buffer into a temporary buffer */\n /* unroll the loop 2 times */\n for (var chn = 0; chn < n_chn_out; chn++) {\n /* apply high pass filter of fs/4 */\n firbuf = buffer[chn];\n var firbufPos = bufPos + 576 - 350 - NSFIRLEN + 192;\n assert(fircoef_.length == ((NSFIRLEN - 1) / 2));\n for (var i = 0; i < 576; i++) {\n var sum1, sum2;\n sum1 = firbuf[firbufPos + i + 10];\n sum2 = 0.0;\n for (var j = 0; j < ((NSFIRLEN - 1) / 2) - 1; j += 2) {\n sum1 += fircoef_[j]\n * (firbuf[firbufPos + i + j] + firbuf[firbufPos + i\n + NSFIRLEN - j]);\n sum2 += fircoef_[j + 1]\n * (firbuf[firbufPos + i + j + 1] + firbuf[firbufPos\n + i + NSFIRLEN - j - 1]);\n }\n ns_hpfsmpl[chn][i] = sum1 + sum2;\n }\n masking_ratio[gr_out][chn].en.assign(gfc.en[chn]);\n masking_ratio[gr_out][chn].thm.assign(gfc.thm[chn]);\n if (n_chn_psy > 2) {\n /* MS maskings */\n /* percep_MS_entropy [chn-2] = gfc . pe [chn]; */\n masking_MS_ratio[gr_out][chn].en.assign(gfc.en[chn + 2]);\n masking_MS_ratio[gr_out][chn].thm.assign(gfc.thm[chn + 2]);\n }\n }\n for (var chn = 0; chn < n_chn_psy; chn++) {\n var attack_intensity = new_float(12);\n var en_subshort = new_float(12);\n var en_short = [0, 0, 0, 0];\n var pf = ns_hpfsmpl[chn & 1];\n var pfPos = 0;\n var attackThreshold = (chn == 3) ? gfc.nsPsy.attackthre_s\n : gfc.nsPsy.attackthre;\n var ns_uselongblock = 1;\n\n if (chn == 2) {\n for (var i = 0, j = 576; j > 0; ++i, --j) {\n var l = ns_hpfsmpl[0][i];\n var r = ns_hpfsmpl[1][i];\n ns_hpfsmpl[0][i] = l + r;\n ns_hpfsmpl[1][i] = l - r;\n }\n }\n /***************************************************************\n * determine the block type (window type)\n ***************************************************************/\n /* calculate energies of each sub-shortblocks */\n for (var i = 0; i < 3; i++) {\n en_subshort[i] = gfc.nsPsy.last_en_subshort[chn][i + 6];\n assert(gfc.nsPsy.last_en_subshort[chn][i + 4] > 0);\n attack_intensity[i] = en_subshort[i]\n / gfc.nsPsy.last_en_subshort[chn][i + 4];\n en_short[0] += en_subshort[i];\n }\n\n for (var i = 0; i < 9; i++) {\n var pfe = pfPos + 576 / 9;\n var p = 1.;\n for (; pfPos < pfe; pfPos++)\n if (p < Math.abs(pf[pfPos]))\n p = Math.abs(pf[pfPos]);\n\n gfc.nsPsy.last_en_subshort[chn][i] = en_subshort[i + 3] = p;\n en_short[1 + i / 3] += p;\n if (p > en_subshort[i + 3 - 2]) {\n assert(en_subshort[i + 3 - 2] > 0);\n p = p / en_subshort[i + 3 - 2];\n } else if (en_subshort[i + 3 - 2] > p * 10.0) {\n assert(p > 0);\n p = en_subshort[i + 3 - 2] / (p * 10.0);\n } else {\n p = 0.0;\n }\n attack_intensity[i + 3] = p;\n }\n /* pulse like signal detection for fatboy.wav and so on */\n for (var i = 0; i < 3; ++i) {\n var enn = en_subshort[i * 3 + 3]\n + en_subshort[i * 3 + 4] + en_subshort[i * 3 + 5];\n var factor = 1.;\n if (en_subshort[i * 3 + 5] * 6 < enn) {\n factor *= 0.5;\n if (en_subshort[i * 3 + 4] * 6 < enn) {\n factor *= 0.5;\n }\n }\n sub_short_factor[chn][i] = factor;\n }\n\n if (gfp.analysis) {\n var x = attack_intensity[0];\n for (var i = 1; i < 12; i++) {\n if (x < attack_intensity[i]) {\n x = attack_intensity[i];\n }\n }\n gfc.pinfo.ers[gr_out][chn] = gfc.pinfo.ers_save[chn];\n gfc.pinfo.ers_save[chn] = x;\n }\n\n /* compare energies between sub-shortblocks */\n for (var i = 0; i < 12; i++) {\n if (0 == ns_attacks[chn][i / 3]\n && attack_intensity[i] > attackThreshold) {\n ns_attacks[chn][i / 3] = (i % 3) + 1;\n }\n }\n\n /*\n * should have energy change between short blocks, in order to avoid\n * periodic signals\n */\n /* Good samples to show the effect are Trumpet test songs */\n /*\n * GB: tuned (1) to avoid too many short blocks for test sample\n * TRUMPET\n */\n /*\n * RH: tuned (2) to let enough short blocks through for test sample\n * FSOL and SNAPS\n */\n for (var i = 1; i < 4; i++) {\n var u = en_short[i - 1];\n var v = en_short[i];\n var m = Math.max(u, v);\n if (m < 40000) { /* (2) */\n if (u < 1.7 * v && v < 1.7 * u) { /* (1) */\n if (i == 1 && ns_attacks[chn][0] <= ns_attacks[chn][i]) {\n ns_attacks[chn][0] = 0;\n }\n ns_attacks[chn][i] = 0;\n }\n }\n }\n\n if (ns_attacks[chn][0] <= gfc.nsPsy.lastAttacks[chn]) {\n ns_attacks[chn][0] = 0;\n }\n\n if (gfc.nsPsy.lastAttacks[chn] == 3\n || (ns_attacks[chn][0] + ns_attacks[chn][1]\n + ns_attacks[chn][2] + ns_attacks[chn][3]) != 0) {\n ns_uselongblock = 0;\n\n if (ns_attacks[chn][1] != 0 && ns_attacks[chn][0] != 0) {\n ns_attacks[chn][1] = 0;\n }\n if (ns_attacks[chn][2] != 0 && ns_attacks[chn][1] != 0) {\n ns_attacks[chn][2] = 0;\n }\n if (ns_attacks[chn][3] != 0 && ns_attacks[chn][2] != 0) {\n ns_attacks[chn][3] = 0;\n }\n }\n if (chn < 2) {\n uselongblock[chn] = ns_uselongblock;\n } else {\n if (ns_uselongblock == 0) {\n uselongblock[0] = uselongblock[1] = 0;\n }\n }\n\n /*\n * there is a one granule delay. Copy maskings computed last call\n * into masking_ratio to return to calling program.\n */\n energy[chn] = gfc.tot_ener[chn];\n }\n }\n\n function vbrpsy_skip_masking_s(gfc, chn, sblock) {\n if (sblock == 0) {\n for (var b = 0; b < gfc.npart_s; b++) {\n gfc.nb_s2[chn][b] = gfc.nb_s1[chn][b];\n gfc.nb_s1[chn][b] = 0;\n }\n }\n }\n\n function vbrpsy_skip_masking_l(gfc, chn) {\n for (var b = 0; b < gfc.npart_l; b++) {\n gfc.nb_2[chn][b] = gfc.nb_1[chn][b];\n gfc.nb_1[chn][b] = 0;\n }\n }\n\n function psyvbr_calc_mask_index_s(gfc, max, avg, mask_idx) {\n var last_tab_entry = tab.length - 1;\n var b = 0;\n var a = avg[b] + avg[b + 1];\n assert(a >= 0);\n if (a > 0.0) {\n var m = max[b];\n if (m < max[b + 1])\n m = max[b + 1];\n assert((gfc.numlines_s[b] + gfc.numlines_s[b + 1] - 1) > 0);\n a = 20.0 * (m * 2.0 - a)\n / (a * (gfc.numlines_s[b] + gfc.numlines_s[b + 1] - 1));\n var k = 0 | a;\n if (k > last_tab_entry)\n k = last_tab_entry;\n mask_idx[b] = k;\n } else {\n mask_idx[b] = 0;\n }\n\n for (b = 1; b < gfc.npart_s - 1; b++) {\n a = avg[b - 1] + avg[b] + avg[b + 1];\n assert(b + 1 < gfc.npart_s);\n assert(a >= 0);\n if (a > 0.0) {\n var m = max[b - 1];\n if (m < max[b])\n m = max[b];\n if (m < max[b + 1])\n m = max[b + 1];\n assert((gfc.numlines_s[b - 1] + gfc.numlines_s[b] + gfc.numlines_s[b + 1] - 1) > 0);\n a = 20.0\n * (m * 3.0 - a)\n / (a * (gfc.numlines_s[b - 1] + gfc.numlines_s[b]\n + gfc.numlines_s[b + 1] - 1));\n var k = 0 | a;\n if (k > last_tab_entry)\n k = last_tab_entry;\n mask_idx[b] = k;\n } else {\n mask_idx[b] = 0;\n }\n }\n assert(b > 0);\n assert(b == gfc.npart_s - 1);\n\n a = avg[b - 1] + avg[b];\n assert(a >= 0);\n if (a > 0.0) {\n var m = max[b - 1];\n if (m < max[b])\n m = max[b];\n assert((gfc.numlines_s[b - 1] + gfc.numlines_s[b] - 1) > 0);\n a = 20.0 * (m * 2.0 - a)\n / (a * (gfc.numlines_s[b - 1] + gfc.numlines_s[b] - 1));\n var k = 0 | a;\n if (k > last_tab_entry)\n k = last_tab_entry;\n mask_idx[b] = k;\n } else {\n mask_idx[b] = 0;\n }\n assert(b == (gfc.npart_s - 1));\n }\n\n function vbrpsy_compute_masking_s(gfp, fftenergy_s, eb, thr, chn, sblock) {\n var gfc = gfp.internal_flags;\n var max = new float[Encoder.CBANDS], avg = new_float(Encoder.CBANDS);\n var i, j, b;\n var mask_idx_s = new int[Encoder.CBANDS];\n\n for (b = j = 0; b < gfc.npart_s; ++b) {\n var ebb = 0, m = 0;\n var n = gfc.numlines_s[b];\n for (i = 0; i < n; ++i, ++j) {\n var el = fftenergy_s[sblock][j];\n ebb += el;\n if (m < el)\n m = el;\n }\n eb[b] = ebb;\n assert(ebb >= 0);\n max[b] = m;\n assert(n > 0);\n avg[b] = ebb / n;\n assert(avg[b] >= 0);\n }\n assert(b == gfc.npart_s);\n assert(j == 129);\n for (; b < Encoder.CBANDS; ++b) {\n max[b] = 0;\n avg[b] = 0;\n }\n psyvbr_calc_mask_index_s(gfc, max, avg, mask_idx_s);\n for (j = b = 0; b < gfc.npart_s; b++) {\n var kk = gfc.s3ind_s[b][0];\n var last = gfc.s3ind_s[b][1];\n var dd, dd_n;\n var x, ecb, avg_mask;\n dd = mask_idx_s[kk];\n dd_n = 1;\n ecb = gfc.s3_ss[j] * eb[kk] * tab[mask_idx_s[kk]];\n ++j;\n ++kk;\n while (kk <= last) {\n dd += mask_idx_s[kk];\n dd_n += 1;\n x = gfc.s3_ss[j] * eb[kk] * tab[mask_idx_s[kk]];\n ecb = vbrpsy_mask_add(ecb, x, kk - b);\n ++j;\n ++kk;\n }\n dd = (1 + 2 * dd) / (2 * dd_n);\n avg_mask = tab[dd] * 0.5;\n ecb *= avg_mask;\n thr[b] = ecb;\n gfc.nb_s2[chn][b] = gfc.nb_s1[chn][b];\n gfc.nb_s1[chn][b] = ecb;\n {\n /*\n * if THR exceeds EB, the quantization routines will take the\n * difference from other bands. in case of strong tonal samples\n * (tonaltest.wav) this leads to heavy distortions. that\'s why\n * we limit THR here.\n */\n x = max[b];\n x *= gfc.minval_s[b];\n x *= avg_mask;\n if (thr[b] > x) {\n thr[b] = x;\n }\n }\n if (gfc.masking_lower > 1) {\n thr[b] *= gfc.masking_lower;\n }\n if (thr[b] > eb[b]) {\n thr[b] = eb[b];\n }\n if (gfc.masking_lower < 1) {\n thr[b] *= gfc.masking_lower;\n }\n\n assert(thr[b] >= 0);\n }\n for (; b < Encoder.CBANDS; ++b) {\n eb[b] = 0;\n thr[b] = 0;\n }\n }\n\n function vbrpsy_compute_masking_l(gfc, fftenergy, eb_l, thr, chn) {\n var max = new_float(Encoder.CBANDS), avg = new_float(Encoder.CBANDS);\n var mask_idx_l = new_int(Encoder.CBANDS + 2);\n var b;\n\n /*********************************************************************\n * Calculate the energy and the tonality of each partition.\n *********************************************************************/\n calc_energy(gfc, fftenergy, eb_l, max, avg);\n calc_mask_index_l(gfc, max, avg, mask_idx_l);\n\n /*********************************************************************\n * convolve the partitioned energy and unpredictability with the\n * spreading function, s3_l[b][k]\n ********************************************************************/\n var k = 0;\n for (b = 0; b < gfc.npart_l; b++) {\n var x, ecb, avg_mask, t;\n /* convolve the partitioned energy with the spreading function */\n var kk = gfc.s3ind[b][0];\n var last = gfc.s3ind[b][1];\n var dd = 0, dd_n = 0;\n dd = mask_idx_l[kk];\n dd_n += 1;\n ecb = gfc.s3_ll[k] * eb_l[kk] * tab[mask_idx_l[kk]];\n ++k;\n ++kk;\n while (kk <= last) {\n dd += mask_idx_l[kk];\n dd_n += 1;\n x = gfc.s3_ll[k] * eb_l[kk] * tab[mask_idx_l[kk]];\n t = vbrpsy_mask_add(ecb, x, kk - b);\n ecb = t;\n ++k;\n ++kk;\n }\n dd = (1 + 2 * dd) / (2 * dd_n);\n avg_mask = tab[dd] * 0.5;\n ecb *= avg_mask;\n\n /**** long block pre-echo control ****/\n /**\n *
\n             * dont use long block pre-echo control if previous granule was\n             * a short block.  This is to avoid the situation:\n             * frame0:  quiet (very low masking)\n             * frame1:  surge  (triggers short blocks)\n             * frame2:  regular frame.  looks like pre-echo when compared to\n             *          frame0, but all pre-echo was in frame1.\n             * 
\n */\n /*\n * chn=0,1 L and R channels chn=2,3 S and M channels.\n */\n if (gfc.blocktype_old[chn & 0x01] == Encoder.SHORT_TYPE) {\n var ecb_limit = rpelev * gfc.nb_1[chn][b];\n if (ecb_limit > 0) {\n thr[b] = Math.min(ecb, ecb_limit);\n } else {\n /**\n *
\n                     * Robert 071209:\n                     * Because we don\'t calculate long block psy when we know a granule\n                     * should be of short blocks, we don\'t have any clue how the granule\n                     * before would have looked like as a long block. So we have to guess\n                     * a little bit for this END_TYPE block.\n                     * Most of the time we get away with this sloppyness. (fingers crossed :)\n                     * The speed increase is worth it.\n                     * 
\n */\n thr[b] = Math.min(ecb, eb_l[b] * NS_PREECHO_ATT2);\n }\n } else {\n var ecb_limit_2 = rpelev2 * gfc.nb_2[chn][b];\n var ecb_limit_1 = rpelev * gfc.nb_1[chn][b];\n var ecb_limit;\n if (ecb_limit_2 <= 0) {\n ecb_limit_2 = ecb;\n }\n if (ecb_limit_1 <= 0) {\n ecb_limit_1 = ecb;\n }\n if (gfc.blocktype_old[chn & 0x01] == Encoder.NORM_TYPE) {\n ecb_limit = Math.min(ecb_limit_1, ecb_limit_2);\n } else {\n ecb_limit = ecb_limit_1;\n }\n thr[b] = Math.min(ecb, ecb_limit);\n }\n gfc.nb_2[chn][b] = gfc.nb_1[chn][b];\n gfc.nb_1[chn][b] = ecb;\n {\n /*\n * if THR exceeds EB, the quantization routines will take the\n * difference from other bands. in case of strong tonal samples\n * (tonaltest.wav) this leads to heavy distortions. that\'s why\n * we limit THR here.\n */\n x = max[b];\n x *= gfc.minval_l[b];\n x *= avg_mask;\n if (thr[b] > x) {\n thr[b] = x;\n }\n }\n if (gfc.masking_lower > 1) {\n thr[b] *= gfc.masking_lower;\n }\n if (thr[b] > eb_l[b]) {\n thr[b] = eb_l[b];\n }\n if (gfc.masking_lower < 1) {\n thr[b] *= gfc.masking_lower;\n }\n assert(thr[b] >= 0);\n }\n for (; b < Encoder.CBANDS; ++b) {\n eb_l[b] = 0;\n thr[b] = 0;\n }\n }\n\n function vbrpsy_compute_block_type(gfp, uselongblock) {\n var gfc = gfp.internal_flags;\n\n if (gfp.short_blocks == ShortBlock.short_block_coupled\n /* force both channels to use the same block type */\n /* this is necessary if the frame is to be encoded in ms_stereo. */\n /* But even without ms_stereo, FhG does this */\n && !(uselongblock[0] != 0 && uselongblock[1] != 0))\n uselongblock[0] = uselongblock[1] = 0;\n\n for (var chn = 0; chn < gfc.channels_out; chn++) {\n /* disable short blocks */\n if (gfp.short_blocks == ShortBlock.short_block_dispensed) {\n uselongblock[chn] = 1;\n }\n if (gfp.short_blocks == ShortBlock.short_block_forced) {\n uselongblock[chn] = 0;\n }\n }\n }\n\n function vbrpsy_apply_block_type(gfp, uselongblock, blocktype_d) {\n var gfc = gfp.internal_flags;\n\n /*\n * update the blocktype of the previous granule, since it depends on\n * what happend in this granule\n */\n for (var chn = 0; chn < gfc.channels_out; chn++) {\n var blocktype = Encoder.NORM_TYPE;\n /* disable short blocks */\n\n if (uselongblock[chn] != 0) {\n /* no attack : use long blocks */\n assert(gfc.blocktype_old[chn] != Encoder.START_TYPE);\n if (gfc.blocktype_old[chn] == Encoder.SHORT_TYPE)\n blocktype = Encoder.STOP_TYPE;\n } else {\n /* attack : use short blocks */\n blocktype = Encoder.SHORT_TYPE;\n if (gfc.blocktype_old[chn] == Encoder.NORM_TYPE) {\n gfc.blocktype_old[chn] = Encoder.START_TYPE;\n }\n if (gfc.blocktype_old[chn] == Encoder.STOP_TYPE)\n gfc.blocktype_old[chn] = Encoder.SHORT_TYPE;\n }\n\n blocktype_d[chn] = gfc.blocktype_old[chn];\n // value returned to calling program\n gfc.blocktype_old[chn] = blocktype;\n // save for next call to l3psy_anal\n }\n }\n\n /**\n * compute M/S thresholds from Johnston & Ferreira 1992 ICASSP paper\n */\n function vbrpsy_compute_MS_thresholds(eb, thr, cb_mld, ath_cb, athadjust, msfix, n) {\n var msfix2 = msfix * 2;\n var athlower = msfix > 0 ? Math.pow(10, athadjust) : 1;\n var rside, rmid;\n for (var b = 0; b < n; ++b) {\n var ebM = eb[2][b];\n var ebS = eb[3][b];\n var thmL = thr[0][b];\n var thmR = thr[1][b];\n var thmM = thr[2][b];\n var thmS = thr[3][b];\n\n /* use this fix if L & R masking differs by 2db or less */\n if (thmL <= 1.58 * thmR && thmR <= 1.58 * thmL) {\n var mld_m = cb_mld[b] * ebS;\n var mld_s = cb_mld[b] * ebM;\n rmid = Math.max(thmM, Math.min(thmS, mld_m));\n rside = Math.max(thmS, Math.min(thmM, mld_s));\n } else {\n rmid = thmM;\n rside = thmS;\n }\n if (msfix > 0) {\n /***************************************************************/\n /* Adjust M/S maskings if user set "msfix" */\n /***************************************************************/\n /* Naoki Shibata 2000 */\n var thmLR, thmMS;\n var ath = ath_cb[b] * athlower;\n thmLR = Math.min(Math.max(thmL, ath), Math.max(thmR, ath));\n thmM = Math.max(rmid, ath);\n thmS = Math.max(rside, ath);\n thmMS = thmM + thmS;\n if (thmMS > 0 && (thmLR * msfix2) < thmMS) {\n var f = thmLR * msfix2 / thmMS;\n thmM *= f;\n thmS *= f;\n assert(thmMS > 0);\n }\n rmid = Math.min(thmM, rmid);\n rside = Math.min(thmS, rside);\n }\n if (rmid > ebM) {\n rmid = ebM;\n }\n if (rside > ebS) {\n rside = ebS;\n }\n thr[2][b] = rmid;\n thr[3][b] = rside;\n }\n }\n\n this.L3psycho_anal_vbr = function (gfp, buffer, bufPos, gr_out, masking_ratio, masking_MS_ratio, percep_entropy, percep_MS_entropy, energy, blocktype_d) {\n var gfc = gfp.internal_flags;\n\n /* fft and energy calculation */\n var wsamp_l;\n var wsamp_s;\n var fftenergy = new_float(Encoder.HBLKSIZE);\n var fftenergy_s = new_float_n([3, Encoder.HBLKSIZE_s]);\n var wsamp_L = new_float_n([2, Encoder.BLKSIZE]);\n var wsamp_S = new_float_n([2, 3, Encoder.BLKSIZE_s]);\n var eb = new_float_n([4, Encoder.CBANDS]), thr = new_float_n([4, Encoder.CBANDS]);\n var sub_short_factor = new_float_n([4, 3]);\n var pcfact = 0.6;\n\n /* block type */\n var ns_attacks = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0],\n [0, 0, 0, 0]];\n var uselongblock = new_int(2);\n\n /* usual variables like loop indices, etc.. */\n\n /* chn=2 and 3 = Mid and Side channels */\n var n_chn_psy = (gfp.mode == MPEGMode.JOINT_STEREO) ? 4\n : gfc.channels_out;\n\n vbrpsy_attack_detection(gfp, buffer, bufPos, gr_out, masking_ratio,\n masking_MS_ratio, energy, sub_short_factor, ns_attacks,\n uselongblock);\n\n vbrpsy_compute_block_type(gfp, uselongblock);\n\n /* LONG BLOCK CASE */\n {\n for (var chn = 0; chn < n_chn_psy; chn++) {\n var ch01 = chn & 0x01;\n wsamp_l = wsamp_L;\n vbrpsy_compute_fft_l(gfp, buffer, bufPos, chn, gr_out,\n fftenergy, wsamp_l, ch01);\n\n vbrpsy_compute_loudness_approximation_l(gfp, gr_out, chn,\n fftenergy);\n\n if (uselongblock[ch01] != 0) {\n vbrpsy_compute_masking_l(gfc, fftenergy, eb[chn], thr[chn],\n chn);\n } else {\n vbrpsy_skip_masking_l(gfc, chn);\n }\n }\n if ((uselongblock[0] + uselongblock[1]) == 2) {\n /* M/S channel */\n if (gfp.mode == MPEGMode.JOINT_STEREO) {\n vbrpsy_compute_MS_thresholds(eb, thr, gfc.mld_cb_l,\n gfc.ATH.cb_l, gfp.ATHlower * gfc.ATH.adjust,\n gfp.msfix, gfc.npart_l);\n }\n }\n /* TODO: apply adaptive ATH masking here ?? */\n for (var chn = 0; chn < n_chn_psy; chn++) {\n var ch01 = chn & 0x01;\n if (uselongblock[ch01] != 0) {\n convert_partition2scalefac_l(gfc, eb[chn], thr[chn], chn);\n }\n }\n }\n\n /* SHORT BLOCKS CASE */\n {\n for (var sblock = 0; sblock < 3; sblock++) {\n for (var chn = 0; chn < n_chn_psy; ++chn) {\n var ch01 = chn & 0x01;\n\n if (uselongblock[ch01] != 0) {\n vbrpsy_skip_masking_s(gfc, chn, sblock);\n } else {\n /* compute masking thresholds for short blocks */\n wsamp_s = wsamp_S;\n vbrpsy_compute_fft_s(gfp, buffer, bufPos, chn, sblock,\n fftenergy_s, wsamp_s, ch01);\n vbrpsy_compute_masking_s(gfp, fftenergy_s, eb[chn],\n thr[chn], chn, sblock);\n }\n }\n if ((uselongblock[0] + uselongblock[1]) == 0) {\n /* M/S channel */\n if (gfp.mode == MPEGMode.JOINT_STEREO) {\n vbrpsy_compute_MS_thresholds(eb, thr, gfc.mld_cb_s,\n gfc.ATH.cb_s, gfp.ATHlower * gfc.ATH.adjust,\n gfp.msfix, gfc.npart_s);\n }\n /* L/R channel */\n }\n /* TODO: apply adaptive ATH masking here ?? */\n for (var chn = 0; chn < n_chn_psy; ++chn) {\n var ch01 = chn & 0x01;\n if (0 == uselongblock[ch01]) {\n convert_partition2scalefac_s(gfc, eb[chn], thr[chn],\n chn, sblock);\n }\n }\n }\n\n /**** short block pre-echo control ****/\n for (var chn = 0; chn < n_chn_psy; chn++) {\n var ch01 = chn & 0x01;\n\n if (uselongblock[ch01] != 0) {\n continue;\n }\n for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n var new_thmm = new_float(3);\n for (var sblock = 0; sblock < 3; sblock++) {\n var thmm = gfc.thm[chn].s[sb][sblock];\n thmm *= NS_PREECHO_ATT0;\n\n if (ns_attacks[chn][sblock] >= 2\n || ns_attacks[chn][sblock + 1] == 1) {\n var idx = (sblock != 0) ? sblock - 1 : 2;\n var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n NS_PREECHO_ATT1 * pcfact);\n thmm = Math.min(thmm, p);\n } else if (ns_attacks[chn][sblock] == 1) {\n var idx = (sblock != 0) ? sblock - 1 : 2;\n var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n NS_PREECHO_ATT2 * pcfact);\n thmm = Math.min(thmm, p);\n } else if ((sblock != 0 && ns_attacks[chn][sblock - 1] == 3)\n || (sblock == 0 && gfc.nsPsy.lastAttacks[chn] == 3)) {\n var idx = (sblock != 2) ? sblock + 1 : 0;\n var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n NS_PREECHO_ATT2 * pcfact);\n thmm = Math.min(thmm, p);\n }\n\n /* pulse like signal detection for fatboy.wav and so on */\n thmm *= sub_short_factor[chn][sblock];\n\n new_thmm[sblock] = thmm;\n }\n for (var sblock = 0; sblock < 3; sblock++) {\n gfc.thm[chn].s[sb][sblock] = new_thmm[sblock];\n }\n }\n }\n }\n for (var chn = 0; chn < n_chn_psy; chn++) {\n gfc.nsPsy.lastAttacks[chn] = ns_attacks[chn][2];\n }\n\n /***************************************************************\n * determine final block type\n ***************************************************************/\n vbrpsy_apply_block_type(gfp, uselongblock, blocktype_d);\n\n /*********************************************************************\n * compute the value of PE to return ... no delay and advance\n *********************************************************************/\n for (var chn = 0; chn < n_chn_psy; chn++) {\n var ppe;\n var ppePos;\n var type;\n var mr;\n\n if (chn > 1) {\n ppe = percep_MS_entropy;\n ppePos = -2;\n type = Encoder.NORM_TYPE;\n if (blocktype_d[0] == Encoder.SHORT_TYPE\n || blocktype_d[1] == Encoder.SHORT_TYPE)\n type = Encoder.SHORT_TYPE;\n mr = masking_MS_ratio[gr_out][chn - 2];\n } else {\n ppe = percep_entropy;\n ppePos = 0;\n type = blocktype_d[chn];\n mr = masking_ratio[gr_out][chn];\n }\n\n if (type == Encoder.SHORT_TYPE) {\n ppe[ppePos + chn] = pecalc_s(mr, gfc.masking_lower);\n } else {\n ppe[ppePos + chn] = pecalc_l(mr, gfc.masking_lower);\n }\n\n if (gfp.analysis) {\n gfc.pinfo.pe[gr_out][chn] = ppe[ppePos + chn];\n }\n }\n return 0;\n }\n\n function s3_func_x(bark, hf_slope) {\n var tempx = bark, tempy;\n\n if (tempx >= 0) {\n tempy = -tempx * 27;\n } else {\n tempy = tempx * hf_slope;\n }\n if (tempy <= -72.0) {\n return 0;\n }\n return Math.exp(tempy * LN_TO_LOG10);\n }\n\n function norm_s3_func_x(hf_slope) {\n var lim_a = 0, lim_b = 0;\n {\n var x = 0, l, h;\n for (x = 0; s3_func_x(x, hf_slope) > 1e-20; x -= 1)\n ;\n l = x;\n h = 0;\n while (Math.abs(h - l) > 1e-12) {\n x = (h + l) / 2;\n if (s3_func_x(x, hf_slope) > 0) {\n h = x;\n } else {\n l = x;\n }\n }\n lim_a = l;\n }\n {\n var x = 0, l, h;\n for (x = 0; s3_func_x(x, hf_slope) > 1e-20; x += 1)\n ;\n l = 0;\n h = x;\n while (Math.abs(h - l) > 1e-12) {\n x = (h + l) / 2;\n if (s3_func_x(x, hf_slope) > 0) {\n l = x;\n } else {\n h = x;\n }\n }\n lim_b = h;\n }\n {\n var sum = 0;\n var m = 1000;\n var i;\n for (i = 0; i <= m; ++i) {\n var x = lim_a + i * (lim_b - lim_a) / m;\n var y = s3_func_x(x, hf_slope);\n sum += y;\n }\n {\n var norm = (m + 1) / (sum * (lim_b - lim_a));\n /* printf( "norm = %lf\\n",norm); */\n return norm;\n }\n }\n }\n\n /**\n * The spreading function. Values returned in units of energy\n */\n function s3_func(bark) {\n var tempx, x, tempy, temp;\n tempx = bark;\n if (tempx >= 0)\n tempx *= 3;\n else\n tempx *= 1.5;\n\n if (tempx >= 0.5 && tempx <= 2.5) {\n temp = tempx - 0.5;\n x = 8.0 * (temp * temp - 2.0 * temp);\n } else\n x = 0.0;\n tempx += 0.474;\n tempy = 15.811389 + 7.5 * tempx - 17.5\n * Math.sqrt(1.0 + tempx * tempx);\n\n if (tempy <= -60.0)\n return 0.0;\n\n tempx = Math.exp((x + tempy) * LN_TO_LOG10);\n\n /**\n *
\n         * Normalization.  The spreading function should be normalized so that:\n         * +inf\n         * /\n         * |  s3 [ bark ]  d(bark)   =  1\n         * /\n         * -inf\n         * 
\n */\n tempx /= .6609193;\n return tempx;\n }\n\n /**\n * see for example "Zwicker: Psychoakustik, 1982; ISBN 3-540-11401-7\n */\n function freq2bark(freq) {\n /* input: freq in hz output: barks */\n if (freq < 0)\n freq = 0;\n freq = freq * 0.001;\n return 13.0 * Math.atan(.76 * freq) + 3.5\n * Math.atan(freq * freq / (7.5 * 7.5));\n }\n\n function init_numline(numlines, bo, bm, bval, bval_width, mld, bo_w, sfreq, blksize, scalepos, deltafreq, sbmax) {\n var b_frq = new_float(Encoder.CBANDS + 1);\n var sample_freq_frac = sfreq / (sbmax > 15 ? 2 * 576 : 2 * 192);\n var partition = new_int(Encoder.HBLKSIZE);\n var i;\n sfreq /= blksize;\n var j = 0;\n var ni = 0;\n /* compute numlines, the number of spectral lines in each partition band */\n /* each partition band should be about DELBARK wide. */\n for (i = 0; i < Encoder.CBANDS; i++) {\n var bark1;\n var j2;\n bark1 = freq2bark(sfreq * j);\n\n b_frq[i] = sfreq * j;\n\n for (j2 = j; freq2bark(sfreq * j2) - bark1 < DELBARK\n && j2 <= blksize / 2; j2++)\n ;\n\n numlines[i] = j2 - j;\n ni = i + 1;\n\n while (j < j2) {\n assert(j < Encoder.HBLKSIZE);\n partition[j++] = i;\n }\n if (j > blksize / 2) {\n j = blksize / 2;\n ++i;\n break;\n }\n }\n assert(i < Encoder.CBANDS);\n b_frq[i] = sfreq * j;\n\n for (var sfb = 0; sfb < sbmax; sfb++) {\n var i1, i2, start, end;\n var arg;\n start = scalepos[sfb];\n end = scalepos[sfb + 1];\n\n i1 = 0 | Math.floor(.5 + deltafreq * (start - .5));\n if (i1 < 0)\n i1 = 0;\n i2 = 0 | Math.floor(.5 + deltafreq * (end - .5));\n\n if (i2 > blksize / 2)\n i2 = blksize / 2;\n\n bm[sfb] = (partition[i1] + partition[i2]) / 2;\n bo[sfb] = partition[i2];\n var f_tmp = sample_freq_frac * end;\n /*\n * calculate how much of this band belongs to current scalefactor\n * band\n */\n bo_w[sfb] = (f_tmp - b_frq[bo[sfb]])\n / (b_frq[bo[sfb] + 1] - b_frq[bo[sfb]]);\n if (bo_w[sfb] < 0) {\n bo_w[sfb] = 0;\n } else {\n if (bo_w[sfb] > 1) {\n bo_w[sfb] = 1;\n }\n }\n /* setup stereo demasking thresholds */\n /* formula reverse enginerred from plot in paper */\n arg = freq2bark(sfreq * scalepos[sfb] * deltafreq);\n arg = ( Math.min(arg, 15.5) / 15.5);\n\n mld[sfb] = Math.pow(10.0,\n 1.25 * (1 - Math.cos(Math.PI * arg)) - 2.5);\n }\n\n /* compute bark values of each critical band */\n j = 0;\n for (var k = 0; k < ni; k++) {\n var w = numlines[k];\n var bark1, bark2;\n\n bark1 = freq2bark(sfreq * (j));\n bark2 = freq2bark(sfreq * (j + w - 1));\n bval[k] = .5 * (bark1 + bark2);\n\n bark1 = freq2bark(sfreq * (j - .5));\n bark2 = freq2bark(sfreq * (j + w - .5));\n bval_width[k] = bark2 - bark1;\n j += w;\n }\n\n return ni;\n }\n\n function init_s3_values(s3ind, npart, bval, bval_width, norm, use_old_s3) {\n var s3 = new_float_n([Encoder.CBANDS, Encoder.CBANDS]);\n /*\n * The s3 array is not linear in the bark scale.\n *\n * bval[x] should be used to get the bark value.\n */\n var j;\n var numberOfNoneZero = 0;\n\n /**\n *
\n         * s[i][j], the value of the spreading function,\n         * centered at band j (masker), for band i (maskee)\n         *\n         * i.e.: sum over j to spread into signal barkval=i\n         * NOTE: i and j are used opposite as in the ISO docs\n         * 
\n */\n if (use_old_s3) {\n for (var i = 0; i < npart; i++) {\n for (j = 0; j < npart; j++) {\n var v = s3_func(bval[i] - bval[j]) * bval_width[j];\n s3[i][j] = v * norm[i];\n }\n }\n } else {\n for (j = 0; j < npart; j++) {\n var hf_slope = 15 + Math.min(21 / bval[j], 12);\n var s3_x_norm = norm_s3_func_x(hf_slope);\n for (var i = 0; i < npart; i++) {\n var v = s3_x_norm\n * s3_func_x(bval[i] - bval[j], hf_slope)\n * bval_width[j];\n s3[i][j] = v * norm[i];\n }\n }\n }\n for (var i = 0; i < npart; i++) {\n for (j = 0; j < npart; j++) {\n if (s3[i][j] > 0.0)\n break;\n }\n s3ind[i][0] = j;\n\n for (j = npart - 1; j > 0; j--) {\n if (s3[i][j] > 0.0)\n break;\n }\n s3ind[i][1] = j;\n numberOfNoneZero += (s3ind[i][1] - s3ind[i][0] + 1);\n }\n\n var p = new_float(numberOfNoneZero);\n var k = 0;\n for (var i = 0; i < npart; i++)\n for (j = s3ind[i][0]; j <= s3ind[i][1]; j++)\n p[k++] = s3[i][j];\n\n return p;\n }\n\n function stereo_demask(f) {\n /* setup stereo demasking thresholds */\n /* formula reverse enginerred from plot in paper */\n var arg = freq2bark(f);\n arg = (Math.min(arg, 15.5) / 15.5);\n\n return Math.pow(10.0,\n 1.25 * (1 - Math.cos(Math.PI * arg)) - 2.5);\n }\n\n /**\n * NOTE: the bitrate reduction from the inter-channel masking effect is low\n * compared to the chance of getting annyoing artefacts. L3psycho_anal_vbr\n * does not use this feature. (Robert 071216)\n */\n this.psymodel_init = function (gfp) {\n var gfc = gfp.internal_flags;\n var i;\n var useOldS3 = true;\n var bvl_a = 13, bvl_b = 24;\n var snr_l_a = 0, snr_l_b = 0;\n var snr_s_a = -8.25, snr_s_b = -4.5;\n var bval = new_float(Encoder.CBANDS);\n var bval_width = new_float(Encoder.CBANDS);\n var norm = new_float(Encoder.CBANDS);\n var sfreq = gfp.out_samplerate;\n\n switch (gfp.experimentalZ) {\n default:\n case 0:\n useOldS3 = true;\n break;\n case 1:\n useOldS3 = (gfp.VBR == VbrMode.vbr_mtrh || gfp.VBR == VbrMode.vbr_mt) ? false\n : true;\n break;\n case 2:\n useOldS3 = false;\n break;\n case 3:\n bvl_a = 8;\n snr_l_a = -1.75;\n snr_l_b = -0.0125;\n snr_s_a = -8.25;\n snr_s_b = -2.25;\n break;\n }\n gfc.ms_ener_ratio_old = .25;\n gfc.blocktype_old[0] = gfc.blocktype_old[1] = Encoder.NORM_TYPE;\n // the vbr header is long blocks\n\n for (i = 0; i < 4; ++i) {\n for (var j = 0; j < Encoder.CBANDS; ++j) {\n gfc.nb_1[i][j] = 1e20;\n gfc.nb_2[i][j] = 1e20;\n gfc.nb_s1[i][j] = gfc.nb_s2[i][j] = 1.0;\n }\n for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n gfc.en[i].l[sb] = 1e20;\n gfc.thm[i].l[sb] = 1e20;\n }\n for (var j = 0; j < 3; ++j) {\n for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n gfc.en[i].s[sb][j] = 1e20;\n gfc.thm[i].s[sb][j] = 1e20;\n }\n gfc.nsPsy.lastAttacks[i] = 0;\n }\n for (var j = 0; j < 9; j++)\n gfc.nsPsy.last_en_subshort[i][j] = 10.;\n }\n\n /* init. for loudness approx. -jd 2001 mar 27 */\n gfc.loudness_sq_save[0] = gfc.loudness_sq_save[1] = 0.0;\n\n /*************************************************************************\n * now compute the psychoacoustic model specific constants\n ************************************************************************/\n /* compute numlines, bo, bm, bval, bval_width, mld */\n\n gfc.npart_l = init_numline(gfc.numlines_l, gfc.bo_l, gfc.bm_l, bval,\n bval_width, gfc.mld_l, gfc.PSY.bo_l_weight, sfreq,\n Encoder.BLKSIZE, gfc.scalefac_band.l, Encoder.BLKSIZE\n / (2.0 * 576), Encoder.SBMAX_l);\n assert(gfc.npart_l < Encoder.CBANDS);\n /* compute the spreading function */\n for (i = 0; i < gfc.npart_l; i++) {\n var snr = snr_l_a;\n if (bval[i] >= bvl_a) {\n snr = snr_l_b * (bval[i] - bvl_a) / (bvl_b - bvl_a) + snr_l_a\n * (bvl_b - bval[i]) / (bvl_b - bvl_a);\n }\n norm[i] = Math.pow(10.0, snr / 10.0);\n if (gfc.numlines_l[i] > 0) {\n gfc.rnumlines_l[i] = 1.0 / gfc.numlines_l[i];\n } else {\n gfc.rnumlines_l[i] = 0;\n }\n }\n gfc.s3_ll = init_s3_values(gfc.s3ind, gfc.npart_l, bval, bval_width,\n norm, useOldS3);\n\n /* compute long block specific values, ATH and MINVAL */\n var j = 0;\n for (i = 0; i < gfc.npart_l; i++) {\n var x;\n\n /* ATH */\n x = Float.MAX_VALUE;\n for (var k = 0; k < gfc.numlines_l[i]; k++, j++) {\n var freq = sfreq * j / (1000.0 * Encoder.BLKSIZE);\n var level;\n /*\n * ATH below 100 Hz constant, not further climbing\n */\n level = this.ATHformula(freq * 1000, gfp) - 20;\n // scale to FFT units; returned value is in dB\n level = Math.pow(10., 0.1 * level);\n // convert from dB . energy\n level *= gfc.numlines_l[i];\n if (x > level)\n x = level;\n }\n gfc.ATH.cb_l[i] = x;\n\n /*\n * MINVAL. For low freq, the strength of the masking is limited by\n * minval this is an ISO MPEG1 thing, dont know if it is really\n * needed\n */\n /*\n * FIXME: it does work to reduce low-freq problems in S53-Wind-Sax\n * and lead-voice samples, but introduces some 3 kbps bit bloat too.\n * TODO: Further refinement of the shape of this hack.\n */\n x = -20 + bval[i] * 20 / 10;\n if (x > 6) {\n x = 100;\n }\n if (x < -15) {\n x = -15;\n }\n x -= 8.;\n gfc.minval_l[i] = (Math.pow(10.0, x / 10.) * gfc.numlines_l[i]);\n }\n\n /************************************************************************\n * do the same things for short blocks\n ************************************************************************/\n gfc.npart_s = init_numline(gfc.numlines_s, gfc.bo_s, gfc.bm_s, bval,\n bval_width, gfc.mld_s, gfc.PSY.bo_s_weight, sfreq,\n Encoder.BLKSIZE_s, gfc.scalefac_band.s, Encoder.BLKSIZE_s\n / (2.0 * 192), Encoder.SBMAX_s);\n assert(gfc.npart_s < Encoder.CBANDS);\n\n /* SNR formula. short block is normalized by SNR. is it still right ? */\n j = 0;\n for (i = 0; i < gfc.npart_s; i++) {\n var x;\n var snr = snr_s_a;\n if (bval[i] >= bvl_a) {\n snr = snr_s_b * (bval[i] - bvl_a) / (bvl_b - bvl_a) + snr_s_a\n * (bvl_b - bval[i]) / (bvl_b - bvl_a);\n }\n norm[i] = Math.pow(10.0, snr / 10.0);\n\n /* ATH */\n x = Float.MAX_VALUE;\n for (var k = 0; k < gfc.numlines_s[i]; k++, j++) {\n var freq = sfreq * j / (1000.0 * Encoder.BLKSIZE_s);\n var level;\n /* freq = Min(.1,freq); */\n /*\n * ATH below 100 Hz constant, not\n * further climbing\n */\n level = this.ATHformula(freq * 1000, gfp) - 20;\n // scale to FFT units; returned value is in dB\n level = Math.pow(10., 0.1 * level);\n // convert from dB . energy\n level *= gfc.numlines_s[i];\n if (x > level)\n x = level;\n }\n gfc.ATH.cb_s[i] = x;\n\n /*\n * MINVAL. For low freq, the strength of the masking is limited by\n * minval this is an ISO MPEG1 thing, dont know if it is really\n * needed\n */\n x = (-7.0 + bval[i] * 7.0 / 12.0);\n if (bval[i] > 12) {\n x *= 1 + Math.log(1 + x) * 3.1;\n }\n if (bval[i] < 12) {\n x *= 1 + Math.log(1 - x) * 2.3;\n }\n if (x < -15) {\n x = -15;\n }\n x -= 8;\n gfc.minval_s[i] = Math.pow(10.0, x / 10)\n * gfc.numlines_s[i];\n }\n\n gfc.s3_ss = init_s3_values(gfc.s3ind_s, gfc.npart_s, bval, bval_width,\n norm, useOldS3);\n\n init_mask_add_max_values();\n fft.init_fft(gfc);\n\n /* setup temporal masking */\n gfc.decay = Math.exp(-1.0 * LOG10\n / (temporalmask_sustain_sec * sfreq / 192.0));\n\n {\n var msfix;\n msfix = NS_MSFIX;\n if ((gfp.exp_nspsytune & 2) != 0)\n msfix = 1.0;\n if (Math.abs(gfp.msfix) > 0.0)\n msfix = gfp.msfix;\n gfp.msfix = msfix;\n\n /*\n * spread only from npart_l bands. Normally, we use the spreading\n * function to convolve from npart_l down to npart_l bands\n */\n for (var b = 0; b < gfc.npart_l; b++)\n if (gfc.s3ind[b][1] > gfc.npart_l - 1)\n gfc.s3ind[b][1] = gfc.npart_l - 1;\n }\n\n /*\n * prepare for ATH auto adjustment: we want to decrease the ATH by 12 dB\n * per second\n */\n var frame_duration = (576. * gfc.mode_gr / sfreq);\n gfc.ATH.decay = Math.pow(10., -12. / 10. * frame_duration);\n gfc.ATH.adjust = 0.01;\n /* minimum, for leading low loudness */\n gfc.ATH.adjustLimit = 1.0;\n /* on lead, allow adjust up to maximum */\n\n assert(gfc.bo_l[Encoder.SBMAX_l - 1] <= gfc.npart_l);\n assert(gfc.bo_s[Encoder.SBMAX_s - 1] <= gfc.npart_s);\n\n if (gfp.ATHtype != -1) {\n /* compute equal loudness weights (eql_w) */\n var freq;\n var freq_inc = gfp.out_samplerate\n / (Encoder.BLKSIZE);\n var eql_balance = 0.0;\n freq = 0.0;\n for (i = 0; i < Encoder.BLKSIZE / 2; ++i) {\n /* convert ATH dB to relative power (not dB) */\n /* to determine eql_w */\n freq += freq_inc;\n gfc.ATH.eql_w[i] = 1. / Math.pow(10, this.ATHformula(freq, gfp) / 10);\n eql_balance += gfc.ATH.eql_w[i];\n }\n eql_balance = 1.0 / eql_balance;\n for (i = Encoder.BLKSIZE / 2; --i >= 0;) { /* scale weights */\n gfc.ATH.eql_w[i] *= eql_balance;\n }\n }\n {\n for (var b = j = 0; b < gfc.npart_s; ++b) {\n for (i = 0; i < gfc.numlines_s[b]; ++i) {\n ++j;\n }\n }\n assert(j == 129);\n for (var b = j = 0; b < gfc.npart_l; ++b) {\n for (i = 0; i < gfc.numlines_l[b]; ++i) {\n ++j;\n }\n }\n assert(j == 513);\n }\n j = 0;\n for (i = 0; i < gfc.npart_l; i++) {\n var freq = sfreq * (j + gfc.numlines_l[i] / 2) / (1.0 * Encoder.BLKSIZE);\n gfc.mld_cb_l[i] = stereo_demask(freq);\n j += gfc.numlines_l[i];\n }\n for (; i < Encoder.CBANDS; ++i) {\n gfc.mld_cb_l[i] = 1;\n }\n j = 0;\n for (i = 0; i < gfc.npart_s; i++) {\n var freq = sfreq * (j + gfc.numlines_s[i] / 2) / (1.0 * Encoder.BLKSIZE_s);\n gfc.mld_cb_s[i] = stereo_demask(freq);\n j += gfc.numlines_s[i];\n }\n for (; i < Encoder.CBANDS; ++i) {\n gfc.mld_cb_s[i] = 1;\n }\n return 0;\n }\n\n /**\n * Those ATH formulas are returning their minimum value for input = -1\n */\n function ATHformula_GB(f, value) {\n /**\n *
\n         *  from Painter & Spanias\n         *           modified by Gabriel Bouvigne to better fit the reality\n         *           ath =    3.640 * pow(f,-0.8)\n         *           - 6.800 * exp(-0.6*pow(f-3.4,2.0))\n         *           + 6.000 * exp(-0.15*pow(f-8.7,2.0))\n         *           + 0.6* 0.001 * pow(f,4.0);\n         *\n         *\n         *           In the past LAME was using the Painter &Spanias formula.\n         *           But we had some recurrent problems with HF content.\n         *           We measured real ATH values, and found the older formula\n         *           to be inaccurate in the higher part. So we made this new\n         *           formula and this solved most of HF problematic test cases.\n         *           The tradeoff is that in VBR mode it increases a lot the\n         *           bitrate.\n         * 
\n */\n\n /*\n * This curve can be adjusted according to the VBR scale: it adjusts\n * from something close to Painter & Spanias on V9 up to Bouvigne\'s\n * formula for V0. This way the VBR bitrate is more balanced according\n * to the -V value.\n */\n\n // the following Hack allows to ask for the lowest value\n if (f < -.3)\n f = 3410;\n\n // convert to khz\n f /= 1000;\n f = Math.max(0.1, f);\n var ath = 3.640 * Math.pow(f, -0.8) - 6.800\n * Math.exp(-0.6 * Math.pow(f - 3.4, 2.0)) + 6.000\n * Math.exp(-0.15 * Math.pow(f - 8.7, 2.0))\n + (0.6 + 0.04 * value) * 0.001 * Math.pow(f, 4.0);\n return ath;\n }\n\n this.ATHformula = function (f, gfp) {\n var ath;\n switch (gfp.ATHtype) {\n case 0:\n ath = ATHformula_GB(f, 9);\n break;\n case 1:\n // over sensitive, should probably be removed\n ath = ATHformula_GB(f, -1);\n break;\n case 2:\n ath = ATHformula_GB(f, 0);\n break;\n case 3:\n // modification of GB formula by Roel\n ath = ATHformula_GB(f, 1) + 6;\n break;\n case 4:\n ath = ATHformula_GB(f, gfp.ATHcurve);\n break;\n default:\n ath = ATHformula_GB(f, 0);\n break;\n }\n return ath;\n }\n\n}\n\nmodule.exports = PsyModel;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"2knq.js","sources":["webpack:///./node_modules/_lamejs@1.2.1@lamejs/src/js/PsyModel.js?da49"],"sourcesContent":["/*\n *      psymodel.c\n *\n *      Copyright (c) 1999-2000 Mark Taylor\n *      Copyright (c) 2001-2002 Naoki Shibata\n *      Copyright (c) 2000-2003 Takehiro Tominaga\n *      Copyright (c) 2000-2008 Robert Hegemann\n *      Copyright (c) 2000-2005 Gabriel Bouvigne\n *      Copyright (c) 2000-2005 Alexander Leidinger\n *\n * This library is free software; you can redistribute it and/or\n * modify it under the terms of the GNU Lesser General Public\n * License as published by the Free Software Foundation; either\n * version 2 of the License, or (at your option) any later version.\n *\n * This library is distributed in the hope that it will be useful,\n * but WITHOUT ANY WARRANTY; without even the implied warranty of\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n * Library General Public License for more details.\n *\n * You should have received a copy of the GNU Lesser General Public\n * License along with this library; if not, write to the\n * Free Software Foundation, Inc., 59 Temple Place - Suite 330,\n * Boston, MA 02111-1307, USA.\n */\n\n/* $Id: PsyModel.java,v 1.27 2011/05/24 20:48:06 kenchis Exp $ */\n\n\n/*\n PSYCHO ACOUSTICS\n\n\n This routine computes the psycho acoustics, delayed by one granule.\n\n Input: buffer of PCM data (1024 samples).\n\n This window should be centered over the 576 sample granule window.\n The routine will compute the psycho acoustics for\n this granule, but return the psycho acoustics computed\n for the *previous* granule.  This is because the block\n type of the previous granule can only be determined\n after we have computed the psycho acoustics for the following\n granule.\n\n Output:  maskings and energies for each scalefactor band.\n block type, PE, and some correlation measures.\n The PE is used by CBR modes to determine if extra bits\n from the bit reservoir should be used.  The correlation\n measures are used to determine mid/side or regular stereo.\n */\n/*\n Notation:\n\n barks:  a non-linear frequency scale.  Mapping from frequency to\n barks is given by freq2bark()\n\n scalefactor bands: The spectrum (frequencies) are broken into\n SBMAX \"scalefactor bands\".  Thes bands\n are determined by the MPEG ISO spec.  In\n the noise shaping/quantization code, we allocate\n bits among the partition bands to achieve the\n best possible quality\n\n partition bands:   The spectrum is also broken into about\n 64 \"partition bands\".  Each partition\n band is about .34 barks wide.  There are about 2-5\n partition bands for each scalefactor band.\n\n LAME computes all psycho acoustic information for each partition\n band.  Then at the end of the computations, this information\n is mapped to scalefactor bands.  The energy in each scalefactor\n band is taken as the sum of the energy in all partition bands\n which overlap the scalefactor band.  The maskings can be computed\n in the same way (and thus represent the average masking in that band)\n or by taking the minmum value multiplied by the number of\n partition bands used (which represents a minimum masking in that band).\n */\n/*\n The general outline is as follows:\n\n 1. compute the energy in each partition band\n 2. compute the tonality in each partition band\n 3. compute the strength of each partion band \"masker\"\n 4. compute the masking (via the spreading function applied to each masker)\n 5. Modifications for mid/side masking.\n\n Each partition band is considiered a \"masker\".  The strength\n of the i'th masker in band j is given by:\n\n s3(bark(i)-bark(j))*strength(i)\n\n The strength of the masker is a function of the energy and tonality.\n The more tonal, the less masking.  LAME uses a simple linear formula\n (controlled by NMT and TMN) which says the strength is given by the\n energy divided by a linear function of the tonality.\n */\n/*\n s3() is the \"spreading function\".  It is given by a formula\n determined via listening tests.\n\n The total masking in the j'th partition band is the sum over\n all maskings i.  It is thus given by the convolution of\n the strength with s3(), the \"spreading function.\"\n\n masking(j) = sum_over_i  s3(i-j)*strength(i)  = s3 o strength\n\n where \"o\" = convolution operator.  s3 is given by a formula determined\n via listening tests.  It is normalized so that s3 o 1 = 1.\n\n Note: instead of a simple convolution, LAME also has the\n option of using \"additive masking\"\n\n The most critical part is step 2, computing the tonality of each\n partition band.  LAME has two tonality estimators.  The first\n is based on the ISO spec, and measures how predictiable the\n signal is over time.  The more predictable, the more tonal.\n The second measure is based on looking at the spectrum of\n a single granule.  The more peaky the spectrum, the more\n tonal.  By most indications, the latter approach is better.\n\n Finally, in step 5, the maskings for the mid and side\n channel are possibly increased.  Under certain circumstances,\n noise in the mid & side channels is assumed to also\n be masked by strong maskers in the L or R channels.\n\n\n Other data computed by the psy-model:\n\n ms_ratio        side-channel / mid-channel masking ratio (for previous granule)\n ms_ratio_next   side-channel / mid-channel masking ratio for this granule\n\n percep_entropy[2]     L and R values (prev granule) of PE - A measure of how\n much pre-echo is in the previous granule\n percep_entropy_MS[2]  mid and side channel values (prev granule) of percep_entropy\n energy[4]             L,R,M,S energy in each channel, prev granule\n blocktype_d[2]        block type to use for previous granule\n */\n//package mp3;\n\n//import java.util.Arrays;\nvar common = require('./common.js');\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\nvar FFT = require(\"./FFT.js\");\nvar Encoder = require(\"./Encoder.js\");\n\nfunction PsyModel() {\n    var MPEGMode = require('./MPEGMode.js')\n    var fft = new FFT();\n\n    var LOG10 = 2.30258509299404568402;\n\n    var rpelev = 2;\n    var rpelev2 = 16;\n    var rpelev_s = 2;\n    var rpelev2_s = 16;\n\n    /* size of each partition band, in barks: */\n    var DELBARK = .34;\n\n    /* tuned for output level (sensitive to energy scale) */\n    var VO_SCALE = (1. / (14752 * 14752) / (Encoder.BLKSIZE / 2));\n\n    var temporalmask_sustain_sec = 0.01;\n\n    var NS_PREECHO_ATT0 = 0.8;\n    var NS_PREECHO_ATT1 = 0.6;\n    var NS_PREECHO_ATT2 = 0.3;\n\n    var NS_MSFIX = 3.5;\n\n    var NSATTACKTHRE = 4.4;\n    var NSATTACKTHRE_S = 25;\n\n    var NSFIRLEN = 21;\n\n    /* size of each partition band, in barks: */\n    var LN_TO_LOG10 = 0.2302585093;\n\n    function NON_LINEAR_SCALE_ENERGY(x) {\n        return x;\n    }\n\n    /**\n     * <PRE>\n     *       L3psycho_anal.  Compute psycho acoustics.\n     *\n     *       Data returned to the calling program must be delayed by one\n     *       granule.\n     *\n     *       This is done in two places.\n     *       If we do not need to know the blocktype, the copying\n     *       can be done here at the top of the program: we copy the data for\n     *       the last granule (computed during the last call) before it is\n     *       overwritten with the new data.  It looks like this:\n     *\n     *       0. static psymodel_data\n     *       1. calling_program_data = psymodel_data\n     *       2. compute psymodel_data\n     *\n     *       For data which needs to know the blocktype, the copying must be\n     *       done at the end of this loop, and the old values must be saved:\n     *\n     *       0. static psymodel_data_old\n     *       1. compute psymodel_data\n     *       2. compute possible block type of this granule\n     *       3. compute final block type of previous granule based on #2.\n     *       4. calling_program_data = psymodel_data_old\n     *       5. psymodel_data_old = psymodel_data\n     *     psycho_loudness_approx\n     *       jd - 2001 mar 12\n     *    in:  energy   - BLKSIZE/2 elements of frequency magnitudes ^ 2\n     *         gfp      - uses out_samplerate, ATHtype (also needed for ATHformula)\n     *    returns: loudness^2 approximation, a positive value roughly tuned for a value\n     *             of 1.0 for signals near clipping.\n     *    notes:   When calibrated, feeding this function binary white noise at sample\n     *             values +32767 or -32768 should return values that approach 3.\n     *             ATHformula is used to approximate an equal loudness curve.\n     *    future:  Data indicates that the shape of the equal loudness curve varies\n     *             with intensity.  This function might be improved by using an equal\n     *             loudness curve shaped for typical playback levels (instead of the\n     *             ATH, that is shaped for the threshold).  A flexible realization might\n     *             simply bend the existing ATH curve to achieve the desired shape.\n     *             However, the potential gain may not be enough to justify an effort.\n     * </PRE>\n     */\n    function psycho_loudness_approx(energy, gfc) {\n        var loudness_power = 0.0;\n        /* apply weights to power in freq. bands */\n        for (var i = 0; i < Encoder.BLKSIZE / 2; ++i)\n            loudness_power += energy[i] * gfc.ATH.eql_w[i];\n        loudness_power *= VO_SCALE;\n\n        return loudness_power;\n    }\n\n    function compute_ffts(gfp, fftenergy, fftenergy_s, wsamp_l, wsamp_lPos, wsamp_s, wsamp_sPos, gr_out, chn, buffer, bufPos) {\n        var gfc = gfp.internal_flags;\n        if (chn < 2) {\n            fft.fft_long(gfc, wsamp_l[wsamp_lPos], chn, buffer, bufPos);\n            fft.fft_short(gfc, wsamp_s[wsamp_sPos], chn, buffer, bufPos);\n        }\n        /* FFT data for mid and side channel is derived from L & R */\n        else if (chn == 2) {\n            for (var j = Encoder.BLKSIZE - 1; j >= 0; --j) {\n                var l = wsamp_l[wsamp_lPos + 0][j];\n                var r = wsamp_l[wsamp_lPos + 1][j];\n                wsamp_l[wsamp_lPos + 0][j] = (l + r) * Util.SQRT2 * 0.5;\n                wsamp_l[wsamp_lPos + 1][j] = (l - r) * Util.SQRT2 * 0.5;\n            }\n            for (var b = 2; b >= 0; --b) {\n                for (var j = Encoder.BLKSIZE_s - 1; j >= 0; --j) {\n                    var l = wsamp_s[wsamp_sPos + 0][b][j];\n                    var r = wsamp_s[wsamp_sPos + 1][b][j];\n                    wsamp_s[wsamp_sPos + 0][b][j] = (l + r) * Util.SQRT2 * 0.5;\n                    wsamp_s[wsamp_sPos + 1][b][j] = (l - r) * Util.SQRT2 * 0.5;\n                }\n            }\n        }\n\n        /*********************************************************************\n         * compute energies\n         *********************************************************************/\n        fftenergy[0] = NON_LINEAR_SCALE_ENERGY(wsamp_l[wsamp_lPos + 0][0]);\n        fftenergy[0] *= fftenergy[0];\n\n        for (var j = Encoder.BLKSIZE / 2 - 1; j >= 0; --j) {\n            var re = (wsamp_l[wsamp_lPos + 0])[Encoder.BLKSIZE / 2 - j];\n            var im = (wsamp_l[wsamp_lPos + 0])[Encoder.BLKSIZE / 2 + j];\n            fftenergy[Encoder.BLKSIZE / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n                * re + im * im) * 0.5);\n        }\n        for (var b = 2; b >= 0; --b) {\n            fftenergy_s[b][0] = (wsamp_s[wsamp_sPos + 0])[b][0];\n            fftenergy_s[b][0] *= fftenergy_s[b][0];\n            for (var j = Encoder.BLKSIZE_s / 2 - 1; j >= 0; --j) {\n                var re = (wsamp_s[wsamp_sPos + 0])[b][Encoder.BLKSIZE_s\n                / 2 - j];\n                var im = (wsamp_s[wsamp_sPos + 0])[b][Encoder.BLKSIZE_s\n                / 2 + j];\n                fftenergy_s[b][Encoder.BLKSIZE_s / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n                    * re + im * im) * 0.5);\n            }\n        }\n        /* total energy */\n        {\n            var totalenergy = 0.0;\n            for (var j = 11; j < Encoder.HBLKSIZE; j++)\n                totalenergy += fftenergy[j];\n\n            gfc.tot_ener[chn] = totalenergy;\n        }\n\n        if (gfp.analysis) {\n            for (var j = 0; j < Encoder.HBLKSIZE; j++) {\n                gfc.pinfo.energy[gr_out][chn][j] = gfc.pinfo.energy_save[chn][j];\n                gfc.pinfo.energy_save[chn][j] = fftenergy[j];\n            }\n            gfc.pinfo.pe[gr_out][chn] = gfc.pe[chn];\n        }\n\n        /*********************************************************************\n         * compute loudness approximation (used for ATH auto-level adjustment)\n         *********************************************************************/\n        if (gfp.athaa_loudapprox == 2 && chn < 2) {\n            // no loudness for mid/side ch\n            gfc.loudness_sq[gr_out][chn] = gfc.loudness_sq_save[chn];\n            gfc.loudness_sq_save[chn] = psycho_loudness_approx(fftenergy, gfc);\n        }\n    }\n\n    /* mask_add optimization */\n    /* init the limit values used to avoid computing log in mask_add when it is not necessary */\n\n    /**\n     * <PRE>\n     *  For example, with i = 10*log10(m2/m1)/10*16         (= log10(m2/m1)*16)\n     *\n     * abs(i)>8 is equivalent (as i is an integer) to\n     * abs(i)>=9\n     * i>=9 || i<=-9\n     * equivalent to (as i is the biggest integer smaller than log10(m2/m1)*16\n     * or the smallest integer bigger than log10(m2/m1)*16 depending on the sign of log10(m2/m1)*16)\n     * log10(m2/m1)>=9/16 || log10(m2/m1)<=-9/16\n     * exp10 is strictly increasing thus this is equivalent to\n     * m2/m1 >= 10^(9/16) || m2/m1<=10^(-9/16) which are comparisons to constants\n     * </PRE>\n     */\n\n    /**\n     * as in if(i>8)\n     */\n    var I1LIMIT = 8;\n    /**\n     * as in if(i>24) . changed 23\n     */\n    var I2LIMIT = 23;\n    /**\n     * as in if(m<15)\n     */\n    var MLIMIT = 15;\n\n    var ma_max_i1;\n    var ma_max_i2;\n    var ma_max_m;\n\n    /**\n     * This is the masking table:<BR>\n     * According to tonality, values are going from 0dB (TMN) to 9.3dB (NMT).<BR>\n     * After additive masking computation, 8dB are added, so final values are\n     * going from 8dB to 17.3dB\n     *\n     * pow(10, -0.0..-0.6)\n     */\n    var tab = [1.0, 0.79433, 0.63096, 0.63096,\n        0.63096, 0.63096, 0.63096, 0.25119, 0.11749];\n\n    function init_mask_add_max_values() {\n        ma_max_i1 = Math.pow(10, (I1LIMIT + 1) / 16.0);\n        ma_max_i2 = Math.pow(10, (I2LIMIT + 1) / 16.0);\n        ma_max_m = Math.pow(10, (MLIMIT) / 10.0);\n    }\n\n    var table1 = [3.3246 * 3.3246,\n        3.23837 * 3.23837, 3.15437 * 3.15437, 3.00412 * 3.00412,\n        2.86103 * 2.86103, 2.65407 * 2.65407, 2.46209 * 2.46209,\n        2.284 * 2.284, 2.11879 * 2.11879, 1.96552 * 1.96552,\n        1.82335 * 1.82335, 1.69146 * 1.69146, 1.56911 * 1.56911,\n        1.46658 * 1.46658, 1.37074 * 1.37074, 1.31036 * 1.31036,\n        1.25264 * 1.25264, 1.20648 * 1.20648, 1.16203 * 1.16203,\n        1.12765 * 1.12765, 1.09428 * 1.09428, 1.0659 * 1.0659,\n        1.03826 * 1.03826, 1.01895 * 1.01895, 1];\n\n    var table2 = [1.33352 * 1.33352,\n        1.35879 * 1.35879, 1.38454 * 1.38454, 1.39497 * 1.39497,\n        1.40548 * 1.40548, 1.3537 * 1.3537, 1.30382 * 1.30382,\n        1.22321 * 1.22321, 1.14758 * 1.14758, 1];\n\n    var table3 = [2.35364 * 2.35364,\n        2.29259 * 2.29259, 2.23313 * 2.23313, 2.12675 * 2.12675,\n        2.02545 * 2.02545, 1.87894 * 1.87894, 1.74303 * 1.74303,\n        1.61695 * 1.61695, 1.49999 * 1.49999, 1.39148 * 1.39148,\n        1.29083 * 1.29083, 1.19746 * 1.19746, 1.11084 * 1.11084,\n        1.03826 * 1.03826];\n\n    /**\n     * addition of simultaneous masking Naoki Shibata 2000/7\n     */\n    function mask_add(m1, m2, kk, b, gfc, shortblock) {\n        var ratio;\n\n        if (m2 > m1) {\n            if (m2 < (m1 * ma_max_i2))\n                ratio = m2 / m1;\n            else\n                return (m1 + m2);\n        } else {\n            if (m1 >= (m2 * ma_max_i2))\n                return (m1 + m2);\n            ratio = m1 / m2;\n        }\n\n        /* Should always be true, just checking */\n        assert(m1 >= 0);\n        assert(m2 >= 0);\n\n        m1 += m2;\n        //if (((long)(b + 3) & 0xffffffff) <= 3 + 3) {\n        if ((b + 3) <= 3 + 3) {\n            /* approximately, 1 bark = 3 partitions */\n            /* 65% of the cases */\n            /* originally 'if(i > 8)' */\n            if (ratio >= ma_max_i1) {\n                /* 43% of the total */\n                return m1;\n            }\n\n            /* 22% of the total */\n            var i = 0 | (Util.FAST_LOG10_X(ratio, 16.0));\n            return m1 * table2[i];\n        }\n\n        /**\n         * <PRE>\n         * m<15 equ log10((m1+m2)/gfc.ATH.cb[k])<1.5\n         * equ (m1+m2)/gfc.ATH.cb[k]<10^1.5\n         * equ (m1+m2)<10^1.5 * gfc.ATH.cb[k]\n         * </PRE>\n         */\n        var i = 0 | Util.FAST_LOG10_X(ratio, 16.0);\n        if (shortblock != 0) {\n            m2 = gfc.ATH.cb_s[kk] * gfc.ATH.adjust;\n        } else {\n            m2 = gfc.ATH.cb_l[kk] * gfc.ATH.adjust;\n        }\n        assert(m2 >= 0);\n        if (m1 < ma_max_m * m2) {\n            /* 3% of the total */\n            /* Originally if (m > 0) { */\n            if (m1 > m2) {\n                var f, r;\n\n                f = 1.0;\n                if (i <= 13)\n                    f = table3[i];\n\n                r = Util.FAST_LOG10_X(m1 / m2, 10.0 / 15.0);\n                return m1 * ((table1[i] - f) * r + f);\n            }\n\n            if (i > 13)\n                return m1;\n\n            return m1 * table3[i];\n        }\n\n        /* 10% of total */\n        return m1 * table1[i];\n    }\n\n    var table2_ = [1.33352 * 1.33352,\n        1.35879 * 1.35879, 1.38454 * 1.38454, 1.39497 * 1.39497,\n        1.40548 * 1.40548, 1.3537 * 1.3537, 1.30382 * 1.30382,\n        1.22321 * 1.22321, 1.14758 * 1.14758, 1];\n\n    /**\n     * addition of simultaneous masking Naoki Shibata 2000/7\n     */\n    function vbrpsy_mask_add(m1, m2, b) {\n        var ratio;\n\n        if (m1 < 0) {\n            m1 = 0;\n        }\n        if (m2 < 0) {\n            m2 = 0;\n        }\n        if (m1 <= 0) {\n            return m2;\n        }\n        if (m2 <= 0) {\n            return m1;\n        }\n        if (m2 > m1) {\n            ratio = m2 / m1;\n        } else {\n            ratio = m1 / m2;\n        }\n        if (-2 <= b && b <= 2) {\n            /* approximately, 1 bark = 3 partitions */\n            /* originally 'if(i > 8)' */\n            if (ratio >= ma_max_i1) {\n                return m1 + m2;\n            } else {\n                var i = 0 | (Util.FAST_LOG10_X(ratio, 16.0));\n                return (m1 + m2) * table2_[i];\n            }\n        }\n        if (ratio < ma_max_i2) {\n            return m1 + m2;\n        }\n        if (m1 < m2) {\n            m1 = m2;\n        }\n        return m1;\n    }\n\n    /**\n     * compute interchannel masking effects\n     */\n    function calc_interchannel_masking(gfp, ratio) {\n        var gfc = gfp.internal_flags;\n        if (gfc.channels_out > 1) {\n            for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n                var l = gfc.thm[0].l[sb];\n                var r = gfc.thm[1].l[sb];\n                gfc.thm[0].l[sb] += r * ratio;\n                gfc.thm[1].l[sb] += l * ratio;\n            }\n            for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n                for (var sblock = 0; sblock < 3; sblock++) {\n                    var l = gfc.thm[0].s[sb][sblock];\n                    var r = gfc.thm[1].s[sb][sblock];\n                    gfc.thm[0].s[sb][sblock] += r * ratio;\n                    gfc.thm[1].s[sb][sblock] += l * ratio;\n                }\n            }\n        }\n    }\n\n    /**\n     * compute M/S thresholds from Johnston & Ferreira 1992 ICASSP paper\n     */\n    function msfix1(gfc) {\n        for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n            /* use this fix if L & R masking differs by 2db or less */\n            /* if db = 10*log10(x2/x1) < 2 */\n            /* if (x2 < 1.58*x1) { */\n            if (gfc.thm[0].l[sb] > 1.58 * gfc.thm[1].l[sb]\n                || gfc.thm[1].l[sb] > 1.58 * gfc.thm[0].l[sb])\n                continue;\n            var mld = gfc.mld_l[sb] * gfc.en[3].l[sb];\n            var rmid = Math.max(gfc.thm[2].l[sb],\n                Math.min(gfc.thm[3].l[sb], mld));\n\n            mld = gfc.mld_l[sb] * gfc.en[2].l[sb];\n            var rside = Math.max(gfc.thm[3].l[sb],\n                Math.min(gfc.thm[2].l[sb], mld));\n            gfc.thm[2].l[sb] = rmid;\n            gfc.thm[3].l[sb] = rside;\n        }\n\n        for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n            for (var sblock = 0; sblock < 3; sblock++) {\n                if (gfc.thm[0].s[sb][sblock] > 1.58 * gfc.thm[1].s[sb][sblock]\n                    || gfc.thm[1].s[sb][sblock] > 1.58 * gfc.thm[0].s[sb][sblock])\n                    continue;\n                var mld = gfc.mld_s[sb] * gfc.en[3].s[sb][sblock];\n                var rmid = Math.max(gfc.thm[2].s[sb][sblock],\n                    Math.min(gfc.thm[3].s[sb][sblock], mld));\n\n                mld = gfc.mld_s[sb] * gfc.en[2].s[sb][sblock];\n                var rside = Math.max(gfc.thm[3].s[sb][sblock],\n                    Math.min(gfc.thm[2].s[sb][sblock], mld));\n\n                gfc.thm[2].s[sb][sblock] = rmid;\n                gfc.thm[3].s[sb][sblock] = rside;\n            }\n        }\n    }\n\n    /**\n     * Adjust M/S maskings if user set \"msfix\"\n     *\n     * Naoki Shibata 2000\n     */\n    function ns_msfix(gfc, msfix, athadjust) {\n        var msfix2 = msfix;\n        var athlower = Math.pow(10, athadjust);\n\n        msfix *= 2.0;\n        msfix2 *= 2.0;\n        for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n            var thmLR, thmM, thmS, ath;\n            ath = (gfc.ATH.cb_l[gfc.bm_l[sb]]) * athlower;\n            thmLR = Math.min(Math.max(gfc.thm[0].l[sb], ath),\n                Math.max(gfc.thm[1].l[sb], ath));\n            thmM = Math.max(gfc.thm[2].l[sb], ath);\n            thmS = Math.max(gfc.thm[3].l[sb], ath);\n            if (thmLR * msfix < thmM + thmS) {\n                var f = thmLR * msfix2 / (thmM + thmS);\n                thmM *= f;\n                thmS *= f;\n                assert(thmM + thmS > 0);\n            }\n            gfc.thm[2].l[sb] = Math.min(thmM, gfc.thm[2].l[sb]);\n            gfc.thm[3].l[sb] = Math.min(thmS, gfc.thm[3].l[sb]);\n        }\n\n        athlower *= ( Encoder.BLKSIZE_s / Encoder.BLKSIZE);\n        for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n            for (var sblock = 0; sblock < 3; sblock++) {\n                var thmLR, thmM, thmS, ath;\n                ath = (gfc.ATH.cb_s[gfc.bm_s[sb]]) * athlower;\n                thmLR = Math.min(Math.max(gfc.thm[0].s[sb][sblock], ath),\n                    Math.max(gfc.thm[1].s[sb][sblock], ath));\n                thmM = Math.max(gfc.thm[2].s[sb][sblock], ath);\n                thmS = Math.max(gfc.thm[3].s[sb][sblock], ath);\n\n                if (thmLR * msfix < thmM + thmS) {\n                    var f = thmLR * msfix / (thmM + thmS);\n                    thmM *= f;\n                    thmS *= f;\n                    assert(thmM + thmS > 0);\n                }\n                gfc.thm[2].s[sb][sblock] = Math.min(gfc.thm[2].s[sb][sblock],\n                    thmM);\n                gfc.thm[3].s[sb][sblock] = Math.min(gfc.thm[3].s[sb][sblock],\n                    thmS);\n            }\n        }\n    }\n\n    /**\n     * short block threshold calculation (part 2)\n     *\n     * partition band bo_s[sfb] is at the transition from scalefactor band sfb\n     * to the next one sfb+1; enn and thmm have to be split between them\n     */\n    function convert_partition2scalefac_s(gfc, eb, thr, chn, sblock) {\n        var sb, b;\n        var enn = 0.0;\n        var thmm = 0.0;\n        for (sb = b = 0; sb < Encoder.SBMAX_s; ++b, ++sb) {\n            var bo_s_sb = gfc.bo_s[sb];\n            var npart_s = gfc.npart_s;\n            var b_lim = bo_s_sb < npart_s ? bo_s_sb : npart_s;\n            while (b < b_lim) {\n                assert(eb[b] >= 0);\n                // iff failed, it may indicate some index error elsewhere\n                assert(thr[b] >= 0);\n                enn += eb[b];\n                thmm += thr[b];\n                b++;\n            }\n            gfc.en[chn].s[sb][sblock] = enn;\n            gfc.thm[chn].s[sb][sblock] = thmm;\n\n            if (b >= npart_s) {\n                ++sb;\n                break;\n            }\n            assert(eb[b] >= 0);\n            // iff failed, it may indicate some index error elsewhere\n            assert(thr[b] >= 0);\n            {\n                /* at transition sfb . sfb+1 */\n                var w_curr = gfc.PSY.bo_s_weight[sb];\n                var w_next = 1.0 - w_curr;\n                enn = w_curr * eb[b];\n                thmm = w_curr * thr[b];\n                gfc.en[chn].s[sb][sblock] += enn;\n                gfc.thm[chn].s[sb][sblock] += thmm;\n                enn = w_next * eb[b];\n                thmm = w_next * thr[b];\n            }\n        }\n        /* zero initialize the rest */\n        for (; sb < Encoder.SBMAX_s; ++sb) {\n            gfc.en[chn].s[sb][sblock] = 0;\n            gfc.thm[chn].s[sb][sblock] = 0;\n        }\n    }\n\n    /**\n     * longblock threshold calculation (part 2)\n     */\n    function convert_partition2scalefac_l(gfc, eb, thr, chn) {\n        var sb, b;\n        var enn = 0.0;\n        var thmm = 0.0;\n        for (sb = b = 0; sb < Encoder.SBMAX_l; ++b, ++sb) {\n            var bo_l_sb = gfc.bo_l[sb];\n            var npart_l = gfc.npart_l;\n            var b_lim = bo_l_sb < npart_l ? bo_l_sb : npart_l;\n            while (b < b_lim) {\n                assert(eb[b] >= 0);\n                // iff failed, it may indicate some index error elsewhere\n                assert(thr[b] >= 0);\n                enn += eb[b];\n                thmm += thr[b];\n                b++;\n            }\n            gfc.en[chn].l[sb] = enn;\n            gfc.thm[chn].l[sb] = thmm;\n\n            if (b >= npart_l) {\n                ++sb;\n                break;\n            }\n            assert(eb[b] >= 0);\n            assert(thr[b] >= 0);\n            {\n                /* at transition sfb . sfb+1 */\n                var w_curr = gfc.PSY.bo_l_weight[sb];\n                var w_next = 1.0 - w_curr;\n                enn = w_curr * eb[b];\n                thmm = w_curr * thr[b];\n                gfc.en[chn].l[sb] += enn;\n                gfc.thm[chn].l[sb] += thmm;\n                enn = w_next * eb[b];\n                thmm = w_next * thr[b];\n            }\n        }\n        /* zero initialize the rest */\n        for (; sb < Encoder.SBMAX_l; ++sb) {\n            gfc.en[chn].l[sb] = 0;\n            gfc.thm[chn].l[sb] = 0;\n        }\n    }\n\n    function compute_masking_s(gfp, fftenergy_s, eb, thr, chn, sblock) {\n        var gfc = gfp.internal_flags;\n        var j, b;\n\n        for (b = j = 0; b < gfc.npart_s; ++b) {\n            var ebb = 0, m = 0;\n            var n = gfc.numlines_s[b];\n            for (var i = 0; i < n; ++i, ++j) {\n                var el = fftenergy_s[sblock][j];\n                ebb += el;\n                if (m < el)\n                    m = el;\n            }\n            eb[b] = ebb;\n        }\n        assert(b == gfc.npart_s);\n        assert(j == 129);\n        for (j = b = 0; b < gfc.npart_s; b++) {\n            var kk = gfc.s3ind_s[b][0];\n            var ecb = gfc.s3_ss[j++] * eb[kk];\n            ++kk;\n            while (kk <= gfc.s3ind_s[b][1]) {\n                ecb += gfc.s3_ss[j] * eb[kk];\n                ++j;\n                ++kk;\n            }\n\n            { /* limit calculated threshold by previous granule */\n                var x = rpelev_s * gfc.nb_s1[chn][b];\n                thr[b] = Math.min(ecb, x);\n            }\n            if (gfc.blocktype_old[chn & 1] == Encoder.SHORT_TYPE) {\n                /* limit calculated threshold by even older granule */\n                var x = rpelev2_s * gfc.nb_s2[chn][b];\n                var y = thr[b];\n                thr[b] = Math.min(x, y);\n            }\n\n            gfc.nb_s2[chn][b] = gfc.nb_s1[chn][b];\n            gfc.nb_s1[chn][b] = ecb;\n            assert(thr[b] >= 0);\n        }\n        for (; b <= Encoder.CBANDS; ++b) {\n            eb[b] = 0;\n            thr[b] = 0;\n        }\n    }\n\n    function block_type_set(gfp, uselongblock, blocktype_d, blocktype) {\n        var gfc = gfp.internal_flags;\n\n        if (gfp.short_blocks == ShortBlock.short_block_coupled\n                /* force both channels to use the same block type */\n                /* this is necessary if the frame is to be encoded in ms_stereo. */\n                /* But even without ms_stereo, FhG does this */\n            && !(uselongblock[0] != 0 && uselongblock[1] != 0))\n            uselongblock[0] = uselongblock[1] = 0;\n\n        /*\n         * update the blocktype of the previous granule, since it depends on\n         * what happend in this granule\n         */\n        for (var chn = 0; chn < gfc.channels_out; chn++) {\n            blocktype[chn] = Encoder.NORM_TYPE;\n            /* disable short blocks */\n            if (gfp.short_blocks == ShortBlock.short_block_dispensed)\n                uselongblock[chn] = 1;\n            if (gfp.short_blocks == ShortBlock.short_block_forced)\n                uselongblock[chn] = 0;\n\n            if (uselongblock[chn] != 0) {\n                /* no attack : use long blocks */\n                assert(gfc.blocktype_old[chn] != Encoder.START_TYPE);\n                if (gfc.blocktype_old[chn] == Encoder.SHORT_TYPE)\n                    blocktype[chn] = Encoder.STOP_TYPE;\n            } else {\n                /* attack : use short blocks */\n                blocktype[chn] = Encoder.SHORT_TYPE;\n                if (gfc.blocktype_old[chn] == Encoder.NORM_TYPE) {\n                    gfc.blocktype_old[chn] = Encoder.START_TYPE;\n                }\n                if (gfc.blocktype_old[chn] == Encoder.STOP_TYPE)\n                    gfc.blocktype_old[chn] = Encoder.SHORT_TYPE;\n            }\n\n            blocktype_d[chn] = gfc.blocktype_old[chn];\n            // value returned to calling program\n            gfc.blocktype_old[chn] = blocktype[chn];\n            // save for next call to l3psy_anal\n        }\n    }\n\n    function NS_INTERP(x, y, r) {\n        /* was pow((x),(r))*pow((y),1-(r)) */\n        if (r >= 1.0) {\n            /* 99.7% of the time */\n            return x;\n        }\n        if (r <= 0.0)\n            return y;\n        if (y > 0.0) {\n            /* rest of the time */\n            return (Math.pow(x / y, r) * y);\n        }\n        /* never happens */\n        return 0.0;\n    }\n\n    /**\n     * these values are tuned only for 44.1kHz...\n     */\n    var regcoef_s = [11.8, 13.6, 17.2, 32, 46.5,\n        51.3, 57.5, 67.1, 71.5, 84.6, 97.6, 130,\n        /* 255.8 */\n    ];\n\n    function pecalc_s(mr, masking_lower) {\n        var pe_s = 1236.28 / 4;\n        for (var sb = 0; sb < Encoder.SBMAX_s - 1; sb++) {\n            for (var sblock = 0; sblock < 3; sblock++) {\n                var thm = mr.thm.s[sb][sblock];\n                assert(sb < regcoef_s.length);\n                if (thm > 0.0) {\n                    var x = thm * masking_lower;\n                    var en = mr.en.s[sb][sblock];\n                    if (en > x) {\n                        if (en > x * 1e10) {\n                            pe_s += regcoef_s[sb] * (10.0 * LOG10);\n                        } else {\n                            assert(x > 0);\n                            pe_s += regcoef_s[sb] * Util.FAST_LOG10(en / x);\n                        }\n                    }\n                }\n            }\n        }\n\n        return pe_s;\n    }\n\n    /**\n     * these values are tuned only for 44.1kHz...\n     */\n    var regcoef_l = [6.8, 5.8, 5.8, 6.4, 6.5, 9.9,\n        12.1, 14.4, 15, 18.9, 21.6, 26.9, 34.2, 40.2, 46.8, 56.5,\n        60.7, 73.9, 85.7, 93.4, 126.1,\n        /* 241.3 */\n    ];\n\n    function pecalc_l(mr, masking_lower) {\n        var pe_l = 1124.23 / 4;\n        for (var sb = 0; sb < Encoder.SBMAX_l - 1; sb++) {\n            var thm = mr.thm.l[sb];\n            assert(sb < regcoef_l.length);\n            if (thm > 0.0) {\n                var x = thm * masking_lower;\n                var en = mr.en.l[sb];\n                if (en > x) {\n                    if (en > x * 1e10) {\n                        pe_l += regcoef_l[sb] * (10.0 * LOG10);\n                    } else {\n                        assert(x > 0);\n                        pe_l += regcoef_l[sb] * Util.FAST_LOG10(en / x);\n                    }\n                }\n            }\n        }\n        return pe_l;\n    }\n\n    function calc_energy(gfc, fftenergy, eb, max, avg) {\n        var b, j;\n\n        for (b = j = 0; b < gfc.npart_l; ++b) {\n            var ebb = 0, m = 0;\n            var i;\n            for (i = 0; i < gfc.numlines_l[b]; ++i, ++j) {\n                var el = fftenergy[j];\n                assert(el >= 0);\n                ebb += el;\n                if (m < el)\n                    m = el;\n            }\n            eb[b] = ebb;\n            max[b] = m;\n            avg[b] = ebb * gfc.rnumlines_l[b];\n            assert(gfc.rnumlines_l[b] >= 0);\n            assert(ebb >= 0);\n            assert(eb[b] >= 0);\n            assert(max[b] >= 0);\n            assert(avg[b] >= 0);\n        }\n    }\n\n    function calc_mask_index_l(gfc, max, avg, mask_idx) {\n        var last_tab_entry = tab.length - 1;\n        var b = 0;\n        var a = avg[b] + avg[b + 1];\n        assert(a >= 0);\n        if (a > 0.0) {\n            var m = max[b];\n            if (m < max[b + 1])\n                m = max[b + 1];\n            assert((gfc.numlines_l[b] + gfc.numlines_l[b + 1] - 1) > 0);\n            a = 20.0 * (m * 2.0 - a)\n                / (a * (gfc.numlines_l[b] + gfc.numlines_l[b + 1] - 1));\n            var k = 0 | a;\n            if (k > last_tab_entry)\n                k = last_tab_entry;\n            mask_idx[b] = k;\n        } else {\n            mask_idx[b] = 0;\n        }\n\n        for (b = 1; b < gfc.npart_l - 1; b++) {\n            a = avg[b - 1] + avg[b] + avg[b + 1];\n            assert(a >= 0);\n            if (a > 0.0) {\n                var m = max[b - 1];\n                if (m < max[b])\n                    m = max[b];\n                if (m < max[b + 1])\n                    m = max[b + 1];\n                assert((gfc.numlines_l[b - 1] + gfc.numlines_l[b] + gfc.numlines_l[b + 1] - 1) > 0);\n                a = 20.0\n                    * (m * 3.0 - a)\n                    / (a * (gfc.numlines_l[b - 1] + gfc.numlines_l[b]\n                    + gfc.numlines_l[b + 1] - 1));\n                var k = 0 | a;\n                if (k > last_tab_entry)\n                    k = last_tab_entry;\n                mask_idx[b] = k;\n            } else {\n                mask_idx[b] = 0;\n            }\n        }\n        assert(b > 0);\n        assert(b == gfc.npart_l - 1);\n\n        a = avg[b - 1] + avg[b];\n        assert(a >= 0);\n        if (a > 0.0) {\n            var m = max[b - 1];\n            if (m < max[b])\n                m = max[b];\n            assert((gfc.numlines_l[b - 1] + gfc.numlines_l[b] - 1) > 0);\n            a = 20.0 * (m * 2.0 - a)\n                / (a * (gfc.numlines_l[b - 1] + gfc.numlines_l[b] - 1));\n            var k = 0 | a;\n            if (k > last_tab_entry)\n                k = last_tab_entry;\n            mask_idx[b] = k;\n        } else {\n            mask_idx[b] = 0;\n        }\n        assert(b == (gfc.npart_l - 1));\n    }\n\n    var fircoef = [\n        -8.65163e-18 * 2, -0.00851586 * 2, -6.74764e-18 * 2, 0.0209036 * 2,\n        -3.36639e-17 * 2, -0.0438162 * 2, -1.54175e-17 * 2, 0.0931738 * 2,\n        -5.52212e-17 * 2, -0.313819 * 2\n    ];\n\n    this.L3psycho_anal_ns = function (gfp, buffer, bufPos, gr_out, masking_ratio, masking_MS_ratio, percep_entropy, percep_MS_entropy, energy, blocktype_d) {\n        /*\n         * to get a good cache performance, one has to think about the sequence,\n         * in which the variables are used.\n         */\n        var gfc = gfp.internal_flags;\n\n        /* fft and energy calculation */\n        var wsamp_L = new_float_n([2, Encoder.BLKSIZE]);\n        var wsamp_S = new_float_n([2, 3, Encoder.BLKSIZE_s]);\n\n        /* convolution */\n        var eb_l = new_float(Encoder.CBANDS + 1);\n        var eb_s = new_float(Encoder.CBANDS + 1);\n        var thr = new_float(Encoder.CBANDS + 2);\n\n        /* block type */\n        var blocktype = new_int(2), uselongblock = new_int(2);\n\n        /* usual variables like loop indices, etc.. */\n        var numchn, chn;\n        var b, i, j, k;\n        var sb, sblock;\n\n        /* variables used for --nspsytune */\n        var ns_hpfsmpl = new_float_n([2, 576]);\n        var pcfact;\n        var mask_idx_l = new_int(Encoder.CBANDS + 2), mask_idx_s = new_int(Encoder.CBANDS + 2);\n\n        Arrays.fill(mask_idx_s, 0);\n\n        numchn = gfc.channels_out;\n        /* chn=2 and 3 = Mid and Side channels */\n        if (gfp.mode == MPEGMode.JOINT_STEREO)\n            numchn = 4;\n\n        if (gfp.VBR == VbrMode.vbr_off)\n            pcfact = gfc.ResvMax == 0 ? 0 : ( gfc.ResvSize)\n            / gfc.ResvMax * 0.5;\n        else if (gfp.VBR == VbrMode.vbr_rh || gfp.VBR == VbrMode.vbr_mtrh\n            || gfp.VBR == VbrMode.vbr_mt) {\n            pcfact = 0.6;\n        } else\n            pcfact = 1.0;\n\n        /**********************************************************************\n         * Apply HPF of fs/4 to the input signal. This is used for attack\n         * detection / handling.\n         **********************************************************************/\n        /* Don't copy the input buffer into a temporary buffer */\n        /* unroll the loop 2 times */\n        for (chn = 0; chn < gfc.channels_out; chn++) {\n            /* apply high pass filter of fs/4 */\n            var firbuf = buffer[chn];\n            var firbufPos = bufPos + 576 - 350 - NSFIRLEN + 192;\n            assert(fircoef.length == ((NSFIRLEN - 1) / 2));\n            for (i = 0; i < 576; i++) {\n                var sum1, sum2;\n                sum1 = firbuf[firbufPos + i + 10];\n                sum2 = 0.0;\n                for (j = 0; j < ((NSFIRLEN - 1) / 2) - 1; j += 2) {\n                    sum1 += fircoef[j]\n                        * (firbuf[firbufPos + i + j] + firbuf[firbufPos + i\n                        + NSFIRLEN - j]);\n                    sum2 += fircoef[j + 1]\n                        * (firbuf[firbufPos + i + j + 1] + firbuf[firbufPos\n                        + i + NSFIRLEN - j - 1]);\n                }\n                ns_hpfsmpl[chn][i] = sum1 + sum2;\n            }\n            masking_ratio[gr_out][chn].en.assign(gfc.en[chn]);\n            masking_ratio[gr_out][chn].thm.assign(gfc.thm[chn]);\n            if (numchn > 2) {\n                /* MS maskings */\n                /* percep_MS_entropy [chn-2] = gfc . pe [chn]; */\n                masking_MS_ratio[gr_out][chn].en.assign(gfc.en[chn + 2]);\n                masking_MS_ratio[gr_out][chn].thm.assign(gfc.thm[chn + 2]);\n            }\n        }\n\n        for (chn = 0; chn < numchn; chn++) {\n            var wsamp_l;\n            var wsamp_s;\n            var en_subshort = new_float(12);\n            var en_short = [0, 0, 0, 0];\n            var attack_intensity = new_float(12);\n            var ns_uselongblock = 1;\n            var attackThreshold;\n            var max = new_float(Encoder.CBANDS), avg = new_float(Encoder.CBANDS);\n            var ns_attacks = [0, 0, 0, 0];\n            var fftenergy = new_float(Encoder.HBLKSIZE);\n            var fftenergy_s = new_float_n([3, Encoder.HBLKSIZE_s]);\n\n            /*\n             * rh 20040301: the following loops do access one off the limits so\n             * I increase the array dimensions by one and initialize the\n             * accessed values to zero\n             */\n            assert(gfc.npart_s <= Encoder.CBANDS);\n            assert(gfc.npart_l <= Encoder.CBANDS);\n\n            /***************************************************************\n             * determine the block type (window type)\n             ***************************************************************/\n            /* calculate energies of each sub-shortblocks */\n            for (i = 0; i < 3; i++) {\n                en_subshort[i] = gfc.nsPsy.last_en_subshort[chn][i + 6];\n                assert(gfc.nsPsy.last_en_subshort[chn][i + 4] > 0);\n                attack_intensity[i] = en_subshort[i]\n                    / gfc.nsPsy.last_en_subshort[chn][i + 4];\n                en_short[0] += en_subshort[i];\n            }\n\n            if (chn == 2) {\n                for (i = 0; i < 576; i++) {\n                    var l, r;\n                    l = ns_hpfsmpl[0][i];\n                    r = ns_hpfsmpl[1][i];\n                    ns_hpfsmpl[0][i] = l + r;\n                    ns_hpfsmpl[1][i] = l - r;\n                }\n            }\n            {\n                var pf = ns_hpfsmpl[chn & 1];\n                var pfPos = 0;\n                for (i = 0; i < 9; i++) {\n                    var pfe = pfPos + 576 / 9;\n                    var p = 1.;\n                    for (; pfPos < pfe; pfPos++)\n                        if (p < Math.abs(pf[pfPos]))\n                            p = Math.abs(pf[pfPos]);\n\n                    gfc.nsPsy.last_en_subshort[chn][i] = en_subshort[i + 3] = p;\n                    en_short[1 + i / 3] += p;\n                    if (p > en_subshort[i + 3 - 2]) {\n                        assert(en_subshort[i + 3 - 2] > 0);\n                        p = p / en_subshort[i + 3 - 2];\n                    } else if (en_subshort[i + 3 - 2] > p * 10.0) {\n                        assert(p > 0);\n                        p = en_subshort[i + 3 - 2] / (p * 10.0);\n                    } else\n                        p = 0.0;\n                    attack_intensity[i + 3] = p;\n                }\n            }\n\n            if (gfp.analysis) {\n                var x = attack_intensity[0];\n                for (i = 1; i < 12; i++)\n                    if (x < attack_intensity[i])\n                        x = attack_intensity[i];\n                gfc.pinfo.ers[gr_out][chn] = gfc.pinfo.ers_save[chn];\n                gfc.pinfo.ers_save[chn] = x;\n            }\n\n            /* compare energies between sub-shortblocks */\n            attackThreshold = (chn == 3) ? gfc.nsPsy.attackthre_s\n                : gfc.nsPsy.attackthre;\n            for (i = 0; i < 12; i++)\n                if (0 == ns_attacks[i / 3]\n                    && attack_intensity[i] > attackThreshold)\n                    ns_attacks[i / 3] = (i % 3) + 1;\n\n            /*\n             * should have energy change between short blocks, in order to avoid\n             * periodic signals\n             */\n            for (i = 1; i < 4; i++) {\n                var ratio;\n                if (en_short[i - 1] > en_short[i]) {\n                    assert(en_short[i] > 0);\n                    ratio = en_short[i - 1] / en_short[i];\n                } else {\n                    assert(en_short[i - 1] > 0);\n                    ratio = en_short[i] / en_short[i - 1];\n                }\n                if (ratio < 1.7) {\n                    ns_attacks[i] = 0;\n                    if (i == 1)\n                        ns_attacks[0] = 0;\n                }\n            }\n\n            if (ns_attacks[0] != 0 && gfc.nsPsy.lastAttacks[chn] != 0)\n                ns_attacks[0] = 0;\n\n            if (gfc.nsPsy.lastAttacks[chn] == 3\n                || (ns_attacks[0] + ns_attacks[1] + ns_attacks[2] + ns_attacks[3]) != 0) {\n                ns_uselongblock = 0;\n\n                if (ns_attacks[1] != 0 && ns_attacks[0] != 0)\n                    ns_attacks[1] = 0;\n                if (ns_attacks[2] != 0 && ns_attacks[1] != 0)\n                    ns_attacks[2] = 0;\n                if (ns_attacks[3] != 0 && ns_attacks[2] != 0)\n                    ns_attacks[3] = 0;\n            }\n\n            if (chn < 2) {\n                uselongblock[chn] = ns_uselongblock;\n            } else {\n                if (ns_uselongblock == 0) {\n                    uselongblock[0] = uselongblock[1] = 0;\n                }\n            }\n\n            /*\n             * there is a one granule delay. Copy maskings computed last call\n             * into masking_ratio to return to calling program.\n             */\n            energy[chn] = gfc.tot_ener[chn];\n\n            /*********************************************************************\n             * compute FFTs\n             *********************************************************************/\n            wsamp_s = wsamp_S;\n            wsamp_l = wsamp_L;\n            compute_ffts(gfp, fftenergy, fftenergy_s, wsamp_l, (chn & 1),\n                wsamp_s, (chn & 1), gr_out, chn, buffer, bufPos);\n\n            /*********************************************************************\n             * Calculate the energy and the tonality of each partition.\n             *********************************************************************/\n            calc_energy(gfc, fftenergy, eb_l, max, avg);\n            calc_mask_index_l(gfc, max, avg, mask_idx_l);\n            /* compute masking thresholds for short blocks */\n            for (sblock = 0; sblock < 3; sblock++) {\n                var enn, thmm;\n                compute_masking_s(gfp, fftenergy_s, eb_s, thr, chn, sblock);\n                convert_partition2scalefac_s(gfc, eb_s, thr, chn, sblock);\n                /**** short block pre-echo control ****/\n                for (sb = 0; sb < Encoder.SBMAX_s; sb++) {\n                    thmm = gfc.thm[chn].s[sb][sblock];\n\n                    thmm *= NS_PREECHO_ATT0;\n                    if (ns_attacks[sblock] >= 2 || ns_attacks[sblock + 1] == 1) {\n                        var idx = (sblock != 0) ? sblock - 1 : 2;\n                        var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n                            NS_PREECHO_ATT1 * pcfact);\n                        thmm = Math.min(thmm, p);\n                    }\n\n                    if (ns_attacks[sblock] == 1) {\n                        var idx = (sblock != 0) ? sblock - 1 : 2;\n                        var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n                            NS_PREECHO_ATT2 * pcfact);\n                        thmm = Math.min(thmm, p);\n                    } else if ((sblock != 0 && ns_attacks[sblock - 1] == 3)\n                        || (sblock == 0 && gfc.nsPsy.lastAttacks[chn] == 3)) {\n                        var idx = (sblock != 2) ? sblock + 1 : 0;\n                        var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n                            NS_PREECHO_ATT2 * pcfact);\n                        thmm = Math.min(thmm, p);\n                    }\n\n                    /* pulse like signal detection for fatboy.wav and so on */\n                    enn = en_subshort[sblock * 3 + 3]\n                        + en_subshort[sblock * 3 + 4]\n                        + en_subshort[sblock * 3 + 5];\n                    if (en_subshort[sblock * 3 + 5] * 6 < enn) {\n                        thmm *= 0.5;\n                        if (en_subshort[sblock * 3 + 4] * 6 < enn)\n                            thmm *= 0.5;\n                    }\n\n                    gfc.thm[chn].s[sb][sblock] = thmm;\n                }\n            }\n            gfc.nsPsy.lastAttacks[chn] = ns_attacks[2];\n\n            /*********************************************************************\n             * convolve the partitioned energy and unpredictability with the\n             * spreading function, s3_l[b][k]\n             ********************************************************************/\n            k = 0;\n            {\n                for (b = 0; b < gfc.npart_l; b++) {\n                    /*\n                     * convolve the partitioned energy with the spreading\n                     * function\n                     */\n                    var kk = gfc.s3ind[b][0];\n                    var eb2 = eb_l[kk] * tab[mask_idx_l[kk]];\n                    var ecb = gfc.s3_ll[k++] * eb2;\n                    while (++kk <= gfc.s3ind[b][1]) {\n                        eb2 = eb_l[kk] * tab[mask_idx_l[kk]];\n                        ecb = mask_add(ecb, gfc.s3_ll[k++] * eb2, kk, kk - b,\n                            gfc, 0);\n                    }\n                    ecb *= 0.158489319246111;\n                    /* pow(10,-0.8) */\n\n                    /**** long block pre-echo control ****/\n                    /**\n                     * <PRE>\n                     * dont use long block pre-echo control if previous granule was\n                     * a short block.  This is to avoid the situation:\n                     * frame0:  quiet (very low masking)\n                     * frame1:  surge  (triggers short blocks)\n                     * frame2:  regular frame.  looks like pre-echo when compared to\n                     *          frame0, but all pre-echo was in frame1.\n                     * </PRE>\n                     */\n                    /*\n                     * chn=0,1 L and R channels\n                     *\n                     * chn=2,3 S and M channels.\n                     */\n\n                    if (gfc.blocktype_old[chn & 1] == Encoder.SHORT_TYPE)\n                        thr[b] = ecb;\n                    else\n                        thr[b] = NS_INTERP(\n                            Math.min(ecb, Math.min(rpelev\n                                * gfc.nb_1[chn][b], rpelev2\n                                * gfc.nb_2[chn][b])), ecb, pcfact);\n\n                    gfc.nb_2[chn][b] = gfc.nb_1[chn][b];\n                    gfc.nb_1[chn][b] = ecb;\n                }\n            }\n            for (; b <= Encoder.CBANDS; ++b) {\n                eb_l[b] = 0;\n                thr[b] = 0;\n            }\n            /* compute masking thresholds for long blocks */\n            convert_partition2scalefac_l(gfc, eb_l, thr, chn);\n        }\n        /* end loop over chn */\n\n        if (gfp.mode == MPEGMode.STEREO || gfp.mode == MPEGMode.JOINT_STEREO) {\n            if (gfp.interChRatio > 0.0) {\n                calc_interchannel_masking(gfp, gfp.interChRatio);\n            }\n        }\n\n        if (gfp.mode == MPEGMode.JOINT_STEREO) {\n            var msfix;\n            msfix1(gfc);\n            msfix = gfp.msfix;\n            if (Math.abs(msfix) > 0.0)\n                ns_msfix(gfc, msfix, gfp.ATHlower * gfc.ATH.adjust);\n        }\n\n        /***************************************************************\n         * determine final block type\n         ***************************************************************/\n        block_type_set(gfp, uselongblock, blocktype_d, blocktype);\n\n        /*********************************************************************\n         * compute the value of PE to return ... no delay and advance\n         *********************************************************************/\n        for (chn = 0; chn < numchn; chn++) {\n            var ppe;\n            var ppePos = 0;\n            var type;\n            var mr;\n\n            if (chn > 1) {\n                ppe = percep_MS_entropy;\n                ppePos = -2;\n                type = Encoder.NORM_TYPE;\n                if (blocktype_d[0] == Encoder.SHORT_TYPE\n                    || blocktype_d[1] == Encoder.SHORT_TYPE)\n                    type = Encoder.SHORT_TYPE;\n                mr = masking_MS_ratio[gr_out][chn - 2];\n            } else {\n                ppe = percep_entropy;\n                ppePos = 0;\n                type = blocktype_d[chn];\n                mr = masking_ratio[gr_out][chn];\n            }\n\n            if (type == Encoder.SHORT_TYPE)\n                ppe[ppePos + chn] = pecalc_s(mr, gfc.masking_lower);\n            else\n                ppe[ppePos + chn] = pecalc_l(mr, gfc.masking_lower);\n\n            if (gfp.analysis)\n                gfc.pinfo.pe[gr_out][chn] = ppe[ppePos + chn];\n\n        }\n        return 0;\n    }\n\n    function vbrpsy_compute_fft_l(gfp, buffer, bufPos, chn, gr_out, fftenergy, wsamp_l, wsamp_lPos) {\n        var gfc = gfp.internal_flags;\n        if (chn < 2) {\n            fft.fft_long(gfc, wsamp_l[wsamp_lPos], chn, buffer, bufPos);\n        } else if (chn == 2) {\n            /* FFT data for mid and side channel is derived from L & R */\n            for (var j = Encoder.BLKSIZE - 1; j >= 0; --j) {\n                var l = wsamp_l[wsamp_lPos + 0][j];\n                var r = wsamp_l[wsamp_lPos + 1][j];\n                wsamp_l[wsamp_lPos + 0][j] = (l + r) * Util.SQRT2 * 0.5;\n                wsamp_l[wsamp_lPos + 1][j] = (l - r) * Util.SQRT2 * 0.5;\n            }\n        }\n\n        /*********************************************************************\n         * compute energies\n         *********************************************************************/\n        fftenergy[0] = NON_LINEAR_SCALE_ENERGY(wsamp_l[wsamp_lPos + 0][0]);\n        fftenergy[0] *= fftenergy[0];\n\n        for (var j = Encoder.BLKSIZE / 2 - 1; j >= 0; --j) {\n            var re = wsamp_l[wsamp_lPos + 0][Encoder.BLKSIZE / 2 - j];\n            var im = wsamp_l[wsamp_lPos + 0][Encoder.BLKSIZE / 2 + j];\n            fftenergy[Encoder.BLKSIZE / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n                * re + im * im) * 0.5);\n        }\n        /* total energy */\n        {\n            var totalenergy = 0.0;\n            for (var j = 11; j < Encoder.HBLKSIZE; j++)\n                totalenergy += fftenergy[j];\n\n            gfc.tot_ener[chn] = totalenergy;\n        }\n\n        if (gfp.analysis) {\n            for (var j = 0; j < Encoder.HBLKSIZE; j++) {\n                gfc.pinfo.energy[gr_out][chn][j] = gfc.pinfo.energy_save[chn][j];\n                gfc.pinfo.energy_save[chn][j] = fftenergy[j];\n            }\n            gfc.pinfo.pe[gr_out][chn] = gfc.pe[chn];\n        }\n    }\n\n    function vbrpsy_compute_fft_s(gfp, buffer, bufPos, chn, sblock, fftenergy_s, wsamp_s, wsamp_sPos) {\n        var gfc = gfp.internal_flags;\n\n        if (sblock == 0 && chn < 2) {\n            fft.fft_short(gfc, wsamp_s[wsamp_sPos], chn, buffer, bufPos);\n        }\n        if (chn == 2) {\n            /* FFT data for mid and side channel is derived from L & R */\n            for (var j = Encoder.BLKSIZE_s - 1; j >= 0; --j) {\n                var l = wsamp_s[wsamp_sPos + 0][sblock][j];\n                var r = wsamp_s[wsamp_sPos + 1][sblock][j];\n                wsamp_s[wsamp_sPos + 0][sblock][j] = (l + r) * Util.SQRT2 * 0.5;\n                wsamp_s[wsamp_sPos + 1][sblock][j] = (l - r) * Util.SQRT2 * 0.5;\n            }\n        }\n\n        /*********************************************************************\n         * compute energies\n         *********************************************************************/\n        fftenergy_s[sblock][0] = wsamp_s[wsamp_sPos + 0][sblock][0];\n        fftenergy_s[sblock][0] *= fftenergy_s[sblock][0];\n        for (var j = Encoder.BLKSIZE_s / 2 - 1; j >= 0; --j) {\n            var re = wsamp_s[wsamp_sPos + 0][sblock][Encoder.BLKSIZE_s / 2 - j];\n            var im = wsamp_s[wsamp_sPos + 0][sblock][Encoder.BLKSIZE_s / 2 + j];\n            fftenergy_s[sblock][Encoder.BLKSIZE_s / 2 - j] = NON_LINEAR_SCALE_ENERGY((re\n                * re + im * im) * 0.5);\n        }\n    }\n\n    /**\n     * compute loudness approximation (used for ATH auto-level adjustment)\n     */\n    function vbrpsy_compute_loudness_approximation_l(gfp, gr_out, chn, fftenergy) {\n        var gfc = gfp.internal_flags;\n        if (gfp.athaa_loudapprox == 2 && chn < 2) {\n            // no loudness for mid/side ch\n            gfc.loudness_sq[gr_out][chn] = gfc.loudness_sq_save[chn];\n            gfc.loudness_sq_save[chn] = psycho_loudness_approx(fftenergy, gfc);\n        }\n    }\n\n    var fircoef_ = [-8.65163e-18 * 2,\n        -0.00851586 * 2, -6.74764e-18 * 2, 0.0209036 * 2,\n        -3.36639e-17 * 2, -0.0438162 * 2, -1.54175e-17 * 2,\n        0.0931738 * 2, -5.52212e-17 * 2, -0.313819 * 2];\n\n    /**\n     * Apply HPF of fs/4 to the input signal. This is used for attack detection\n     * / handling.\n     */\n    function vbrpsy_attack_detection(gfp, buffer, bufPos, gr_out, masking_ratio, masking_MS_ratio, energy, sub_short_factor, ns_attacks, uselongblock) {\n        var ns_hpfsmpl = new_float_n([2, 576]);\n        var gfc = gfp.internal_flags;\n        var n_chn_out = gfc.channels_out;\n        /* chn=2 and 3 = Mid and Side channels */\n        var n_chn_psy = (gfp.mode == MPEGMode.JOINT_STEREO) ? 4 : n_chn_out;\n        /* Don't copy the input buffer into a temporary buffer */\n        /* unroll the loop 2 times */\n        for (var chn = 0; chn < n_chn_out; chn++) {\n            /* apply high pass filter of fs/4 */\n            firbuf = buffer[chn];\n            var firbufPos = bufPos + 576 - 350 - NSFIRLEN + 192;\n            assert(fircoef_.length == ((NSFIRLEN - 1) / 2));\n            for (var i = 0; i < 576; i++) {\n                var sum1, sum2;\n                sum1 = firbuf[firbufPos + i + 10];\n                sum2 = 0.0;\n                for (var j = 0; j < ((NSFIRLEN - 1) / 2) - 1; j += 2) {\n                    sum1 += fircoef_[j]\n                        * (firbuf[firbufPos + i + j] + firbuf[firbufPos + i\n                        + NSFIRLEN - j]);\n                    sum2 += fircoef_[j + 1]\n                        * (firbuf[firbufPos + i + j + 1] + firbuf[firbufPos\n                        + i + NSFIRLEN - j - 1]);\n                }\n                ns_hpfsmpl[chn][i] = sum1 + sum2;\n            }\n            masking_ratio[gr_out][chn].en.assign(gfc.en[chn]);\n            masking_ratio[gr_out][chn].thm.assign(gfc.thm[chn]);\n            if (n_chn_psy > 2) {\n                /* MS maskings */\n                /* percep_MS_entropy [chn-2] = gfc . pe [chn]; */\n                masking_MS_ratio[gr_out][chn].en.assign(gfc.en[chn + 2]);\n                masking_MS_ratio[gr_out][chn].thm.assign(gfc.thm[chn + 2]);\n            }\n        }\n        for (var chn = 0; chn < n_chn_psy; chn++) {\n            var attack_intensity = new_float(12);\n            var en_subshort = new_float(12);\n            var en_short = [0, 0, 0, 0];\n            var pf = ns_hpfsmpl[chn & 1];\n            var pfPos = 0;\n            var attackThreshold = (chn == 3) ? gfc.nsPsy.attackthre_s\n                : gfc.nsPsy.attackthre;\n            var ns_uselongblock = 1;\n\n            if (chn == 2) {\n                for (var i = 0, j = 576; j > 0; ++i, --j) {\n                    var l = ns_hpfsmpl[0][i];\n                    var r = ns_hpfsmpl[1][i];\n                    ns_hpfsmpl[0][i] = l + r;\n                    ns_hpfsmpl[1][i] = l - r;\n                }\n            }\n            /***************************************************************\n             * determine the block type (window type)\n             ***************************************************************/\n            /* calculate energies of each sub-shortblocks */\n            for (var i = 0; i < 3; i++) {\n                en_subshort[i] = gfc.nsPsy.last_en_subshort[chn][i + 6];\n                assert(gfc.nsPsy.last_en_subshort[chn][i + 4] > 0);\n                attack_intensity[i] = en_subshort[i]\n                    / gfc.nsPsy.last_en_subshort[chn][i + 4];\n                en_short[0] += en_subshort[i];\n            }\n\n            for (var i = 0; i < 9; i++) {\n                var pfe = pfPos + 576 / 9;\n                var p = 1.;\n                for (; pfPos < pfe; pfPos++)\n                    if (p < Math.abs(pf[pfPos]))\n                        p = Math.abs(pf[pfPos]);\n\n                gfc.nsPsy.last_en_subshort[chn][i] = en_subshort[i + 3] = p;\n                en_short[1 + i / 3] += p;\n                if (p > en_subshort[i + 3 - 2]) {\n                    assert(en_subshort[i + 3 - 2] > 0);\n                    p = p / en_subshort[i + 3 - 2];\n                } else if (en_subshort[i + 3 - 2] > p * 10.0) {\n                    assert(p > 0);\n                    p = en_subshort[i + 3 - 2] / (p * 10.0);\n                } else {\n                    p = 0.0;\n                }\n                attack_intensity[i + 3] = p;\n            }\n            /* pulse like signal detection for fatboy.wav and so on */\n            for (var i = 0; i < 3; ++i) {\n                var enn = en_subshort[i * 3 + 3]\n                    + en_subshort[i * 3 + 4] + en_subshort[i * 3 + 5];\n                var factor = 1.;\n                if (en_subshort[i * 3 + 5] * 6 < enn) {\n                    factor *= 0.5;\n                    if (en_subshort[i * 3 + 4] * 6 < enn) {\n                        factor *= 0.5;\n                    }\n                }\n                sub_short_factor[chn][i] = factor;\n            }\n\n            if (gfp.analysis) {\n                var x = attack_intensity[0];\n                for (var i = 1; i < 12; i++) {\n                    if (x < attack_intensity[i]) {\n                        x = attack_intensity[i];\n                    }\n                }\n                gfc.pinfo.ers[gr_out][chn] = gfc.pinfo.ers_save[chn];\n                gfc.pinfo.ers_save[chn] = x;\n            }\n\n            /* compare energies between sub-shortblocks */\n            for (var i = 0; i < 12; i++) {\n                if (0 == ns_attacks[chn][i / 3]\n                    && attack_intensity[i] > attackThreshold) {\n                    ns_attacks[chn][i / 3] = (i % 3) + 1;\n                }\n            }\n\n            /*\n             * should have energy change between short blocks, in order to avoid\n             * periodic signals\n             */\n            /* Good samples to show the effect are Trumpet test songs */\n            /*\n             * GB: tuned (1) to avoid too many short blocks for test sample\n             * TRUMPET\n             */\n            /*\n             * RH: tuned (2) to let enough short blocks through for test sample\n             * FSOL and SNAPS\n             */\n            for (var i = 1; i < 4; i++) {\n                var u = en_short[i - 1];\n                var v = en_short[i];\n                var m = Math.max(u, v);\n                if (m < 40000) { /* (2) */\n                    if (u < 1.7 * v && v < 1.7 * u) { /* (1) */\n                        if (i == 1 && ns_attacks[chn][0] <= ns_attacks[chn][i]) {\n                            ns_attacks[chn][0] = 0;\n                        }\n                        ns_attacks[chn][i] = 0;\n                    }\n                }\n            }\n\n            if (ns_attacks[chn][0] <= gfc.nsPsy.lastAttacks[chn]) {\n                ns_attacks[chn][0] = 0;\n            }\n\n            if (gfc.nsPsy.lastAttacks[chn] == 3\n                || (ns_attacks[chn][0] + ns_attacks[chn][1]\n                + ns_attacks[chn][2] + ns_attacks[chn][3]) != 0) {\n                ns_uselongblock = 0;\n\n                if (ns_attacks[chn][1] != 0 && ns_attacks[chn][0] != 0) {\n                    ns_attacks[chn][1] = 0;\n                }\n                if (ns_attacks[chn][2] != 0 && ns_attacks[chn][1] != 0) {\n                    ns_attacks[chn][2] = 0;\n                }\n                if (ns_attacks[chn][3] != 0 && ns_attacks[chn][2] != 0) {\n                    ns_attacks[chn][3] = 0;\n                }\n            }\n            if (chn < 2) {\n                uselongblock[chn] = ns_uselongblock;\n            } else {\n                if (ns_uselongblock == 0) {\n                    uselongblock[0] = uselongblock[1] = 0;\n                }\n            }\n\n            /*\n             * there is a one granule delay. Copy maskings computed last call\n             * into masking_ratio to return to calling program.\n             */\n            energy[chn] = gfc.tot_ener[chn];\n        }\n    }\n\n    function vbrpsy_skip_masking_s(gfc, chn, sblock) {\n        if (sblock == 0) {\n            for (var b = 0; b < gfc.npart_s; b++) {\n                gfc.nb_s2[chn][b] = gfc.nb_s1[chn][b];\n                gfc.nb_s1[chn][b] = 0;\n            }\n        }\n    }\n\n    function vbrpsy_skip_masking_l(gfc, chn) {\n        for (var b = 0; b < gfc.npart_l; b++) {\n            gfc.nb_2[chn][b] = gfc.nb_1[chn][b];\n            gfc.nb_1[chn][b] = 0;\n        }\n    }\n\n    function psyvbr_calc_mask_index_s(gfc, max, avg, mask_idx) {\n        var last_tab_entry = tab.length - 1;\n        var b = 0;\n        var a = avg[b] + avg[b + 1];\n        assert(a >= 0);\n        if (a > 0.0) {\n            var m = max[b];\n            if (m < max[b + 1])\n                m = max[b + 1];\n            assert((gfc.numlines_s[b] + gfc.numlines_s[b + 1] - 1) > 0);\n            a = 20.0 * (m * 2.0 - a)\n                / (a * (gfc.numlines_s[b] + gfc.numlines_s[b + 1] - 1));\n            var k = 0 | a;\n            if (k > last_tab_entry)\n                k = last_tab_entry;\n            mask_idx[b] = k;\n        } else {\n            mask_idx[b] = 0;\n        }\n\n        for (b = 1; b < gfc.npart_s - 1; b++) {\n            a = avg[b - 1] + avg[b] + avg[b + 1];\n            assert(b + 1 < gfc.npart_s);\n            assert(a >= 0);\n            if (a > 0.0) {\n                var m = max[b - 1];\n                if (m < max[b])\n                    m = max[b];\n                if (m < max[b + 1])\n                    m = max[b + 1];\n                assert((gfc.numlines_s[b - 1] + gfc.numlines_s[b] + gfc.numlines_s[b + 1] - 1) > 0);\n                a = 20.0\n                    * (m * 3.0 - a)\n                    / (a * (gfc.numlines_s[b - 1] + gfc.numlines_s[b]\n                    + gfc.numlines_s[b + 1] - 1));\n                var k = 0 | a;\n                if (k > last_tab_entry)\n                    k = last_tab_entry;\n                mask_idx[b] = k;\n            } else {\n                mask_idx[b] = 0;\n            }\n        }\n        assert(b > 0);\n        assert(b == gfc.npart_s - 1);\n\n        a = avg[b - 1] + avg[b];\n        assert(a >= 0);\n        if (a > 0.0) {\n            var m = max[b - 1];\n            if (m < max[b])\n                m = max[b];\n            assert((gfc.numlines_s[b - 1] + gfc.numlines_s[b] - 1) > 0);\n            a = 20.0 * (m * 2.0 - a)\n                / (a * (gfc.numlines_s[b - 1] + gfc.numlines_s[b] - 1));\n            var k = 0 | a;\n            if (k > last_tab_entry)\n                k = last_tab_entry;\n            mask_idx[b] = k;\n        } else {\n            mask_idx[b] = 0;\n        }\n        assert(b == (gfc.npart_s - 1));\n    }\n\n    function vbrpsy_compute_masking_s(gfp, fftenergy_s, eb, thr, chn, sblock) {\n        var gfc = gfp.internal_flags;\n        var max = new float[Encoder.CBANDS], avg = new_float(Encoder.CBANDS);\n        var i, j, b;\n        var mask_idx_s = new int[Encoder.CBANDS];\n\n        for (b = j = 0; b < gfc.npart_s; ++b) {\n            var ebb = 0, m = 0;\n            var n = gfc.numlines_s[b];\n            for (i = 0; i < n; ++i, ++j) {\n                var el = fftenergy_s[sblock][j];\n                ebb += el;\n                if (m < el)\n                    m = el;\n            }\n            eb[b] = ebb;\n            assert(ebb >= 0);\n            max[b] = m;\n            assert(n > 0);\n            avg[b] = ebb / n;\n            assert(avg[b] >= 0);\n        }\n        assert(b == gfc.npart_s);\n        assert(j == 129);\n        for (; b < Encoder.CBANDS; ++b) {\n            max[b] = 0;\n            avg[b] = 0;\n        }\n        psyvbr_calc_mask_index_s(gfc, max, avg, mask_idx_s);\n        for (j = b = 0; b < gfc.npart_s; b++) {\n            var kk = gfc.s3ind_s[b][0];\n            var last = gfc.s3ind_s[b][1];\n            var dd, dd_n;\n            var x, ecb, avg_mask;\n            dd = mask_idx_s[kk];\n            dd_n = 1;\n            ecb = gfc.s3_ss[j] * eb[kk] * tab[mask_idx_s[kk]];\n            ++j;\n            ++kk;\n            while (kk <= last) {\n                dd += mask_idx_s[kk];\n                dd_n += 1;\n                x = gfc.s3_ss[j] * eb[kk] * tab[mask_idx_s[kk]];\n                ecb = vbrpsy_mask_add(ecb, x, kk - b);\n                ++j;\n                ++kk;\n            }\n            dd = (1 + 2 * dd) / (2 * dd_n);\n            avg_mask = tab[dd] * 0.5;\n            ecb *= avg_mask;\n            thr[b] = ecb;\n            gfc.nb_s2[chn][b] = gfc.nb_s1[chn][b];\n            gfc.nb_s1[chn][b] = ecb;\n            {\n                /*\n                 * if THR exceeds EB, the quantization routines will take the\n                 * difference from other bands. in case of strong tonal samples\n                 * (tonaltest.wav) this leads to heavy distortions. that's why\n                 * we limit THR here.\n                 */\n                x = max[b];\n                x *= gfc.minval_s[b];\n                x *= avg_mask;\n                if (thr[b] > x) {\n                    thr[b] = x;\n                }\n            }\n            if (gfc.masking_lower > 1) {\n                thr[b] *= gfc.masking_lower;\n            }\n            if (thr[b] > eb[b]) {\n                thr[b] = eb[b];\n            }\n            if (gfc.masking_lower < 1) {\n                thr[b] *= gfc.masking_lower;\n            }\n\n            assert(thr[b] >= 0);\n        }\n        for (; b < Encoder.CBANDS; ++b) {\n            eb[b] = 0;\n            thr[b] = 0;\n        }\n    }\n\n    function vbrpsy_compute_masking_l(gfc, fftenergy, eb_l, thr, chn) {\n        var max = new_float(Encoder.CBANDS), avg = new_float(Encoder.CBANDS);\n        var mask_idx_l = new_int(Encoder.CBANDS + 2);\n        var b;\n\n        /*********************************************************************\n         * Calculate the energy and the tonality of each partition.\n         *********************************************************************/\n        calc_energy(gfc, fftenergy, eb_l, max, avg);\n        calc_mask_index_l(gfc, max, avg, mask_idx_l);\n\n        /*********************************************************************\n         * convolve the partitioned energy and unpredictability with the\n         * spreading function, s3_l[b][k]\n         ********************************************************************/\n        var k = 0;\n        for (b = 0; b < gfc.npart_l; b++) {\n            var x, ecb, avg_mask, t;\n            /* convolve the partitioned energy with the spreading function */\n            var kk = gfc.s3ind[b][0];\n            var last = gfc.s3ind[b][1];\n            var dd = 0, dd_n = 0;\n            dd = mask_idx_l[kk];\n            dd_n += 1;\n            ecb = gfc.s3_ll[k] * eb_l[kk] * tab[mask_idx_l[kk]];\n            ++k;\n            ++kk;\n            while (kk <= last) {\n                dd += mask_idx_l[kk];\n                dd_n += 1;\n                x = gfc.s3_ll[k] * eb_l[kk] * tab[mask_idx_l[kk]];\n                t = vbrpsy_mask_add(ecb, x, kk - b);\n                ecb = t;\n                ++k;\n                ++kk;\n            }\n            dd = (1 + 2 * dd) / (2 * dd_n);\n            avg_mask = tab[dd] * 0.5;\n            ecb *= avg_mask;\n\n            /**** long block pre-echo control ****/\n            /**\n             * <PRE>\n             * dont use long block pre-echo control if previous granule was\n             * a short block.  This is to avoid the situation:\n             * frame0:  quiet (very low masking)\n             * frame1:  surge  (triggers short blocks)\n             * frame2:  regular frame.  looks like pre-echo when compared to\n             *          frame0, but all pre-echo was in frame1.\n             * </PRE>\n             */\n            /*\n             * chn=0,1 L and R channels chn=2,3 S and M channels.\n             */\n            if (gfc.blocktype_old[chn & 0x01] == Encoder.SHORT_TYPE) {\n                var ecb_limit = rpelev * gfc.nb_1[chn][b];\n                if (ecb_limit > 0) {\n                    thr[b] = Math.min(ecb, ecb_limit);\n                } else {\n                    /**\n                     * <PRE>\n                     * Robert 071209:\n                     * Because we don't calculate long block psy when we know a granule\n                     * should be of short blocks, we don't have any clue how the granule\n                     * before would have looked like as a long block. So we have to guess\n                     * a little bit for this END_TYPE block.\n                     * Most of the time we get away with this sloppyness. (fingers crossed :)\n                     * The speed increase is worth it.\n                     * </PRE>\n                     */\n                    thr[b] = Math.min(ecb, eb_l[b] * NS_PREECHO_ATT2);\n                }\n            } else {\n                var ecb_limit_2 = rpelev2 * gfc.nb_2[chn][b];\n                var ecb_limit_1 = rpelev * gfc.nb_1[chn][b];\n                var ecb_limit;\n                if (ecb_limit_2 <= 0) {\n                    ecb_limit_2 = ecb;\n                }\n                if (ecb_limit_1 <= 0) {\n                    ecb_limit_1 = ecb;\n                }\n                if (gfc.blocktype_old[chn & 0x01] == Encoder.NORM_TYPE) {\n                    ecb_limit = Math.min(ecb_limit_1, ecb_limit_2);\n                } else {\n                    ecb_limit = ecb_limit_1;\n                }\n                thr[b] = Math.min(ecb, ecb_limit);\n            }\n            gfc.nb_2[chn][b] = gfc.nb_1[chn][b];\n            gfc.nb_1[chn][b] = ecb;\n            {\n                /*\n                 * if THR exceeds EB, the quantization routines will take the\n                 * difference from other bands. in case of strong tonal samples\n                 * (tonaltest.wav) this leads to heavy distortions. that's why\n                 * we limit THR here.\n                 */\n                x = max[b];\n                x *= gfc.minval_l[b];\n                x *= avg_mask;\n                if (thr[b] > x) {\n                    thr[b] = x;\n                }\n            }\n            if (gfc.masking_lower > 1) {\n                thr[b] *= gfc.masking_lower;\n            }\n            if (thr[b] > eb_l[b]) {\n                thr[b] = eb_l[b];\n            }\n            if (gfc.masking_lower < 1) {\n                thr[b] *= gfc.masking_lower;\n            }\n            assert(thr[b] >= 0);\n        }\n        for (; b < Encoder.CBANDS; ++b) {\n            eb_l[b] = 0;\n            thr[b] = 0;\n        }\n    }\n\n    function vbrpsy_compute_block_type(gfp, uselongblock) {\n        var gfc = gfp.internal_flags;\n\n        if (gfp.short_blocks == ShortBlock.short_block_coupled\n                /* force both channels to use the same block type */\n                /* this is necessary if the frame is to be encoded in ms_stereo. */\n                /* But even without ms_stereo, FhG does this */\n            && !(uselongblock[0] != 0 && uselongblock[1] != 0))\n            uselongblock[0] = uselongblock[1] = 0;\n\n        for (var chn = 0; chn < gfc.channels_out; chn++) {\n            /* disable short blocks */\n            if (gfp.short_blocks == ShortBlock.short_block_dispensed) {\n                uselongblock[chn] = 1;\n            }\n            if (gfp.short_blocks == ShortBlock.short_block_forced) {\n                uselongblock[chn] = 0;\n            }\n        }\n    }\n\n    function vbrpsy_apply_block_type(gfp, uselongblock, blocktype_d) {\n        var gfc = gfp.internal_flags;\n\n        /*\n         * update the blocktype of the previous granule, since it depends on\n         * what happend in this granule\n         */\n        for (var chn = 0; chn < gfc.channels_out; chn++) {\n            var blocktype = Encoder.NORM_TYPE;\n            /* disable short blocks */\n\n            if (uselongblock[chn] != 0) {\n                /* no attack : use long blocks */\n                assert(gfc.blocktype_old[chn] != Encoder.START_TYPE);\n                if (gfc.blocktype_old[chn] == Encoder.SHORT_TYPE)\n                    blocktype = Encoder.STOP_TYPE;\n            } else {\n                /* attack : use short blocks */\n                blocktype = Encoder.SHORT_TYPE;\n                if (gfc.blocktype_old[chn] == Encoder.NORM_TYPE) {\n                    gfc.blocktype_old[chn] = Encoder.START_TYPE;\n                }\n                if (gfc.blocktype_old[chn] == Encoder.STOP_TYPE)\n                    gfc.blocktype_old[chn] = Encoder.SHORT_TYPE;\n            }\n\n            blocktype_d[chn] = gfc.blocktype_old[chn];\n            // value returned to calling program\n            gfc.blocktype_old[chn] = blocktype;\n            // save for next call to l3psy_anal\n        }\n    }\n\n    /**\n     * compute M/S thresholds from Johnston & Ferreira 1992 ICASSP paper\n     */\n    function vbrpsy_compute_MS_thresholds(eb, thr, cb_mld, ath_cb, athadjust, msfix, n) {\n        var msfix2 = msfix * 2;\n        var athlower = msfix > 0 ? Math.pow(10, athadjust) : 1;\n        var rside, rmid;\n        for (var b = 0; b < n; ++b) {\n            var ebM = eb[2][b];\n            var ebS = eb[3][b];\n            var thmL = thr[0][b];\n            var thmR = thr[1][b];\n            var thmM = thr[2][b];\n            var thmS = thr[3][b];\n\n            /* use this fix if L & R masking differs by 2db or less */\n            if (thmL <= 1.58 * thmR && thmR <= 1.58 * thmL) {\n                var mld_m = cb_mld[b] * ebS;\n                var mld_s = cb_mld[b] * ebM;\n                rmid = Math.max(thmM, Math.min(thmS, mld_m));\n                rside = Math.max(thmS, Math.min(thmM, mld_s));\n            } else {\n                rmid = thmM;\n                rside = thmS;\n            }\n            if (msfix > 0) {\n                /***************************************************************/\n                /* Adjust M/S maskings if user set \"msfix\" */\n                /***************************************************************/\n                /* Naoki Shibata 2000 */\n                var thmLR, thmMS;\n                var ath = ath_cb[b] * athlower;\n                thmLR = Math.min(Math.max(thmL, ath), Math.max(thmR, ath));\n                thmM = Math.max(rmid, ath);\n                thmS = Math.max(rside, ath);\n                thmMS = thmM + thmS;\n                if (thmMS > 0 && (thmLR * msfix2) < thmMS) {\n                    var f = thmLR * msfix2 / thmMS;\n                    thmM *= f;\n                    thmS *= f;\n                    assert(thmMS > 0);\n                }\n                rmid = Math.min(thmM, rmid);\n                rside = Math.min(thmS, rside);\n            }\n            if (rmid > ebM) {\n                rmid = ebM;\n            }\n            if (rside > ebS) {\n                rside = ebS;\n            }\n            thr[2][b] = rmid;\n            thr[3][b] = rside;\n        }\n    }\n\n    this.L3psycho_anal_vbr = function (gfp, buffer, bufPos, gr_out, masking_ratio, masking_MS_ratio, percep_entropy, percep_MS_entropy, energy, blocktype_d) {\n        var gfc = gfp.internal_flags;\n\n        /* fft and energy calculation */\n        var wsamp_l;\n        var wsamp_s;\n        var fftenergy = new_float(Encoder.HBLKSIZE);\n        var fftenergy_s = new_float_n([3, Encoder.HBLKSIZE_s]);\n        var wsamp_L = new_float_n([2, Encoder.BLKSIZE]);\n        var wsamp_S = new_float_n([2, 3, Encoder.BLKSIZE_s]);\n        var eb = new_float_n([4, Encoder.CBANDS]), thr = new_float_n([4, Encoder.CBANDS]);\n        var sub_short_factor = new_float_n([4, 3]);\n        var pcfact = 0.6;\n\n        /* block type */\n        var ns_attacks = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0],\n            [0, 0, 0, 0]];\n        var uselongblock = new_int(2);\n\n        /* usual variables like loop indices, etc.. */\n\n        /* chn=2 and 3 = Mid and Side channels */\n        var n_chn_psy = (gfp.mode == MPEGMode.JOINT_STEREO) ? 4\n            : gfc.channels_out;\n\n        vbrpsy_attack_detection(gfp, buffer, bufPos, gr_out, masking_ratio,\n            masking_MS_ratio, energy, sub_short_factor, ns_attacks,\n            uselongblock);\n\n        vbrpsy_compute_block_type(gfp, uselongblock);\n\n        /* LONG BLOCK CASE */\n        {\n            for (var chn = 0; chn < n_chn_psy; chn++) {\n                var ch01 = chn & 0x01;\n                wsamp_l = wsamp_L;\n                vbrpsy_compute_fft_l(gfp, buffer, bufPos, chn, gr_out,\n                    fftenergy, wsamp_l, ch01);\n\n                vbrpsy_compute_loudness_approximation_l(gfp, gr_out, chn,\n                    fftenergy);\n\n                if (uselongblock[ch01] != 0) {\n                    vbrpsy_compute_masking_l(gfc, fftenergy, eb[chn], thr[chn],\n                        chn);\n                } else {\n                    vbrpsy_skip_masking_l(gfc, chn);\n                }\n            }\n            if ((uselongblock[0] + uselongblock[1]) == 2) {\n                /* M/S channel */\n                if (gfp.mode == MPEGMode.JOINT_STEREO) {\n                    vbrpsy_compute_MS_thresholds(eb, thr, gfc.mld_cb_l,\n                        gfc.ATH.cb_l, gfp.ATHlower * gfc.ATH.adjust,\n                        gfp.msfix, gfc.npart_l);\n                }\n            }\n            /* TODO: apply adaptive ATH masking here ?? */\n            for (var chn = 0; chn < n_chn_psy; chn++) {\n                var ch01 = chn & 0x01;\n                if (uselongblock[ch01] != 0) {\n                    convert_partition2scalefac_l(gfc, eb[chn], thr[chn], chn);\n                }\n            }\n        }\n\n        /* SHORT BLOCKS CASE */\n        {\n            for (var sblock = 0; sblock < 3; sblock++) {\n                for (var chn = 0; chn < n_chn_psy; ++chn) {\n                    var ch01 = chn & 0x01;\n\n                    if (uselongblock[ch01] != 0) {\n                        vbrpsy_skip_masking_s(gfc, chn, sblock);\n                    } else {\n                        /* compute masking thresholds for short blocks */\n                        wsamp_s = wsamp_S;\n                        vbrpsy_compute_fft_s(gfp, buffer, bufPos, chn, sblock,\n                            fftenergy_s, wsamp_s, ch01);\n                        vbrpsy_compute_masking_s(gfp, fftenergy_s, eb[chn],\n                            thr[chn], chn, sblock);\n                    }\n                }\n                if ((uselongblock[0] + uselongblock[1]) == 0) {\n                    /* M/S channel */\n                    if (gfp.mode == MPEGMode.JOINT_STEREO) {\n                        vbrpsy_compute_MS_thresholds(eb, thr, gfc.mld_cb_s,\n                            gfc.ATH.cb_s, gfp.ATHlower * gfc.ATH.adjust,\n                            gfp.msfix, gfc.npart_s);\n                    }\n                    /* L/R channel */\n                }\n                /* TODO: apply adaptive ATH masking here ?? */\n                for (var chn = 0; chn < n_chn_psy; ++chn) {\n                    var ch01 = chn & 0x01;\n                    if (0 == uselongblock[ch01]) {\n                        convert_partition2scalefac_s(gfc, eb[chn], thr[chn],\n                            chn, sblock);\n                    }\n                }\n            }\n\n            /**** short block pre-echo control ****/\n            for (var chn = 0; chn < n_chn_psy; chn++) {\n                var ch01 = chn & 0x01;\n\n                if (uselongblock[ch01] != 0) {\n                    continue;\n                }\n                for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n                    var new_thmm = new_float(3);\n                    for (var sblock = 0; sblock < 3; sblock++) {\n                        var thmm = gfc.thm[chn].s[sb][sblock];\n                        thmm *= NS_PREECHO_ATT0;\n\n                        if (ns_attacks[chn][sblock] >= 2\n                            || ns_attacks[chn][sblock + 1] == 1) {\n                            var idx = (sblock != 0) ? sblock - 1 : 2;\n                            var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n                                NS_PREECHO_ATT1 * pcfact);\n                            thmm = Math.min(thmm, p);\n                        } else if (ns_attacks[chn][sblock] == 1) {\n                            var idx = (sblock != 0) ? sblock - 1 : 2;\n                            var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n                                NS_PREECHO_ATT2 * pcfact);\n                            thmm = Math.min(thmm, p);\n                        } else if ((sblock != 0 && ns_attacks[chn][sblock - 1] == 3)\n                            || (sblock == 0 && gfc.nsPsy.lastAttacks[chn] == 3)) {\n                            var idx = (sblock != 2) ? sblock + 1 : 0;\n                            var p = NS_INTERP(gfc.thm[chn].s[sb][idx], thmm,\n                                NS_PREECHO_ATT2 * pcfact);\n                            thmm = Math.min(thmm, p);\n                        }\n\n                        /* pulse like signal detection for fatboy.wav and so on */\n                        thmm *= sub_short_factor[chn][sblock];\n\n                        new_thmm[sblock] = thmm;\n                    }\n                    for (var sblock = 0; sblock < 3; sblock++) {\n                        gfc.thm[chn].s[sb][sblock] = new_thmm[sblock];\n                    }\n                }\n            }\n        }\n        for (var chn = 0; chn < n_chn_psy; chn++) {\n            gfc.nsPsy.lastAttacks[chn] = ns_attacks[chn][2];\n        }\n\n        /***************************************************************\n         * determine final block type\n         ***************************************************************/\n        vbrpsy_apply_block_type(gfp, uselongblock, blocktype_d);\n\n        /*********************************************************************\n         * compute the value of PE to return ... no delay and advance\n         *********************************************************************/\n        for (var chn = 0; chn < n_chn_psy; chn++) {\n            var ppe;\n            var ppePos;\n            var type;\n            var mr;\n\n            if (chn > 1) {\n                ppe = percep_MS_entropy;\n                ppePos = -2;\n                type = Encoder.NORM_TYPE;\n                if (blocktype_d[0] == Encoder.SHORT_TYPE\n                    || blocktype_d[1] == Encoder.SHORT_TYPE)\n                    type = Encoder.SHORT_TYPE;\n                mr = masking_MS_ratio[gr_out][chn - 2];\n            } else {\n                ppe = percep_entropy;\n                ppePos = 0;\n                type = blocktype_d[chn];\n                mr = masking_ratio[gr_out][chn];\n            }\n\n            if (type == Encoder.SHORT_TYPE) {\n                ppe[ppePos + chn] = pecalc_s(mr, gfc.masking_lower);\n            } else {\n                ppe[ppePos + chn] = pecalc_l(mr, gfc.masking_lower);\n            }\n\n            if (gfp.analysis) {\n                gfc.pinfo.pe[gr_out][chn] = ppe[ppePos + chn];\n            }\n        }\n        return 0;\n    }\n\n    function s3_func_x(bark, hf_slope) {\n        var tempx = bark, tempy;\n\n        if (tempx >= 0) {\n            tempy = -tempx * 27;\n        } else {\n            tempy = tempx * hf_slope;\n        }\n        if (tempy <= -72.0) {\n            return 0;\n        }\n        return Math.exp(tempy * LN_TO_LOG10);\n    }\n\n    function norm_s3_func_x(hf_slope) {\n        var lim_a = 0, lim_b = 0;\n        {\n            var x = 0, l, h;\n            for (x = 0; s3_func_x(x, hf_slope) > 1e-20; x -= 1)\n                ;\n            l = x;\n            h = 0;\n            while (Math.abs(h - l) > 1e-12) {\n                x = (h + l) / 2;\n                if (s3_func_x(x, hf_slope) > 0) {\n                    h = x;\n                } else {\n                    l = x;\n                }\n            }\n            lim_a = l;\n        }\n        {\n            var x = 0, l, h;\n            for (x = 0; s3_func_x(x, hf_slope) > 1e-20; x += 1)\n                ;\n            l = 0;\n            h = x;\n            while (Math.abs(h - l) > 1e-12) {\n                x = (h + l) / 2;\n                if (s3_func_x(x, hf_slope) > 0) {\n                    l = x;\n                } else {\n                    h = x;\n                }\n            }\n            lim_b = h;\n        }\n        {\n            var sum = 0;\n            var m = 1000;\n            var i;\n            for (i = 0; i <= m; ++i) {\n                var x = lim_a + i * (lim_b - lim_a) / m;\n                var y = s3_func_x(x, hf_slope);\n                sum += y;\n            }\n            {\n                var norm = (m + 1) / (sum * (lim_b - lim_a));\n                /* printf( \"norm = %lf\\n\",norm); */\n                return norm;\n            }\n        }\n    }\n\n    /**\n     *   The spreading function.  Values returned in units of energy\n     */\n    function s3_func(bark) {\n        var tempx, x, tempy, temp;\n        tempx = bark;\n        if (tempx >= 0)\n            tempx *= 3;\n        else\n            tempx *= 1.5;\n\n        if (tempx >= 0.5 && tempx <= 2.5) {\n            temp = tempx - 0.5;\n            x = 8.0 * (temp * temp - 2.0 * temp);\n        } else\n            x = 0.0;\n        tempx += 0.474;\n        tempy = 15.811389 + 7.5 * tempx - 17.5\n            * Math.sqrt(1.0 + tempx * tempx);\n\n        if (tempy <= -60.0)\n            return 0.0;\n\n        tempx = Math.exp((x + tempy) * LN_TO_LOG10);\n\n        /**\n         * <PRE>\n         * Normalization.  The spreading function should be normalized so that:\n         * +inf\n         * /\n         * |  s3 [ bark ]  d(bark)   =  1\n         * /\n         * -inf\n         * </PRE>\n         */\n        tempx /= .6609193;\n        return tempx;\n    }\n\n    /**\n     * see for example \"Zwicker: Psychoakustik, 1982; ISBN 3-540-11401-7\n     */\n    function freq2bark(freq) {\n        /* input: freq in hz output: barks */\n        if (freq < 0)\n            freq = 0;\n        freq = freq * 0.001;\n        return 13.0 * Math.atan(.76 * freq) + 3.5\n            * Math.atan(freq * freq / (7.5 * 7.5));\n    }\n\n    function init_numline(numlines, bo, bm, bval, bval_width, mld, bo_w, sfreq, blksize, scalepos, deltafreq, sbmax) {\n        var b_frq = new_float(Encoder.CBANDS + 1);\n        var sample_freq_frac = sfreq / (sbmax > 15 ? 2 * 576 : 2 * 192);\n        var partition = new_int(Encoder.HBLKSIZE);\n        var i;\n        sfreq /= blksize;\n        var j = 0;\n        var ni = 0;\n        /* compute numlines, the number of spectral lines in each partition band */\n        /* each partition band should be about DELBARK wide. */\n        for (i = 0; i < Encoder.CBANDS; i++) {\n            var bark1;\n            var j2;\n            bark1 = freq2bark(sfreq * j);\n\n            b_frq[i] = sfreq * j;\n\n            for (j2 = j; freq2bark(sfreq * j2) - bark1 < DELBARK\n            && j2 <= blksize / 2; j2++)\n                ;\n\n            numlines[i] = j2 - j;\n            ni = i + 1;\n\n            while (j < j2) {\n                assert(j < Encoder.HBLKSIZE);\n                partition[j++] = i;\n            }\n            if (j > blksize / 2) {\n                j = blksize / 2;\n                ++i;\n                break;\n            }\n        }\n        assert(i < Encoder.CBANDS);\n        b_frq[i] = sfreq * j;\n\n        for (var sfb = 0; sfb < sbmax; sfb++) {\n            var i1, i2, start, end;\n            var arg;\n            start = scalepos[sfb];\n            end = scalepos[sfb + 1];\n\n            i1 = 0 | Math.floor(.5 + deltafreq * (start - .5));\n            if (i1 < 0)\n                i1 = 0;\n            i2 = 0 | Math.floor(.5 + deltafreq * (end - .5));\n\n            if (i2 > blksize / 2)\n                i2 = blksize / 2;\n\n            bm[sfb] = (partition[i1] + partition[i2]) / 2;\n            bo[sfb] = partition[i2];\n            var f_tmp = sample_freq_frac * end;\n            /*\n             * calculate how much of this band belongs to current scalefactor\n             * band\n             */\n            bo_w[sfb] = (f_tmp - b_frq[bo[sfb]])\n                / (b_frq[bo[sfb] + 1] - b_frq[bo[sfb]]);\n            if (bo_w[sfb] < 0) {\n                bo_w[sfb] = 0;\n            } else {\n                if (bo_w[sfb] > 1) {\n                    bo_w[sfb] = 1;\n                }\n            }\n            /* setup stereo demasking thresholds */\n            /* formula reverse enginerred from plot in paper */\n            arg = freq2bark(sfreq * scalepos[sfb] * deltafreq);\n            arg = ( Math.min(arg, 15.5) / 15.5);\n\n            mld[sfb] = Math.pow(10.0,\n                1.25 * (1 - Math.cos(Math.PI * arg)) - 2.5);\n        }\n\n        /* compute bark values of each critical band */\n        j = 0;\n        for (var k = 0; k < ni; k++) {\n            var w = numlines[k];\n            var bark1, bark2;\n\n            bark1 = freq2bark(sfreq * (j));\n            bark2 = freq2bark(sfreq * (j + w - 1));\n            bval[k] = .5 * (bark1 + bark2);\n\n            bark1 = freq2bark(sfreq * (j - .5));\n            bark2 = freq2bark(sfreq * (j + w - .5));\n            bval_width[k] = bark2 - bark1;\n            j += w;\n        }\n\n        return ni;\n    }\n\n    function init_s3_values(s3ind, npart, bval, bval_width, norm, use_old_s3) {\n        var s3 = new_float_n([Encoder.CBANDS, Encoder.CBANDS]);\n        /*\n         * The s3 array is not linear in the bark scale.\n         *\n         * bval[x] should be used to get the bark value.\n         */\n        var j;\n        var numberOfNoneZero = 0;\n\n        /**\n         * <PRE>\n         * s[i][j], the value of the spreading function,\n         * centered at band j (masker), for band i (maskee)\n         *\n         * i.e.: sum over j to spread into signal barkval=i\n         * NOTE: i and j are used opposite as in the ISO docs\n         * </PRE>\n         */\n        if (use_old_s3) {\n            for (var i = 0; i < npart; i++) {\n                for (j = 0; j < npart; j++) {\n                    var v = s3_func(bval[i] - bval[j]) * bval_width[j];\n                    s3[i][j] = v * norm[i];\n                }\n            }\n        } else {\n            for (j = 0; j < npart; j++) {\n                var hf_slope = 15 + Math.min(21 / bval[j], 12);\n                var s3_x_norm = norm_s3_func_x(hf_slope);\n                for (var i = 0; i < npart; i++) {\n                    var v = s3_x_norm\n                        * s3_func_x(bval[i] - bval[j], hf_slope)\n                        * bval_width[j];\n                    s3[i][j] = v * norm[i];\n                }\n            }\n        }\n        for (var i = 0; i < npart; i++) {\n            for (j = 0; j < npart; j++) {\n                if (s3[i][j] > 0.0)\n                    break;\n            }\n            s3ind[i][0] = j;\n\n            for (j = npart - 1; j > 0; j--) {\n                if (s3[i][j] > 0.0)\n                    break;\n            }\n            s3ind[i][1] = j;\n            numberOfNoneZero += (s3ind[i][1] - s3ind[i][0] + 1);\n        }\n\n        var p = new_float(numberOfNoneZero);\n        var k = 0;\n        for (var i = 0; i < npart; i++)\n            for (j = s3ind[i][0]; j <= s3ind[i][1]; j++)\n                p[k++] = s3[i][j];\n\n        return p;\n    }\n\n    function stereo_demask(f) {\n        /* setup stereo demasking thresholds */\n        /* formula reverse enginerred from plot in paper */\n        var arg = freq2bark(f);\n        arg = (Math.min(arg, 15.5) / 15.5);\n\n        return Math.pow(10.0,\n            1.25 * (1 - Math.cos(Math.PI * arg)) - 2.5);\n    }\n\n    /**\n     * NOTE: the bitrate reduction from the inter-channel masking effect is low\n     * compared to the chance of getting annyoing artefacts. L3psycho_anal_vbr\n     * does not use this feature. (Robert 071216)\n     */\n    this.psymodel_init = function (gfp) {\n        var gfc = gfp.internal_flags;\n        var i;\n        var useOldS3 = true;\n        var bvl_a = 13, bvl_b = 24;\n        var snr_l_a = 0, snr_l_b = 0;\n        var snr_s_a = -8.25, snr_s_b = -4.5;\n        var bval = new_float(Encoder.CBANDS);\n        var bval_width = new_float(Encoder.CBANDS);\n        var norm = new_float(Encoder.CBANDS);\n        var sfreq = gfp.out_samplerate;\n\n        switch (gfp.experimentalZ) {\n            default:\n            case 0:\n                useOldS3 = true;\n                break;\n            case 1:\n                useOldS3 = (gfp.VBR == VbrMode.vbr_mtrh || gfp.VBR == VbrMode.vbr_mt) ? false\n                    : true;\n                break;\n            case 2:\n                useOldS3 = false;\n                break;\n            case 3:\n                bvl_a = 8;\n                snr_l_a = -1.75;\n                snr_l_b = -0.0125;\n                snr_s_a = -8.25;\n                snr_s_b = -2.25;\n                break;\n        }\n        gfc.ms_ener_ratio_old = .25;\n        gfc.blocktype_old[0] = gfc.blocktype_old[1] = Encoder.NORM_TYPE;\n        // the vbr header is long blocks\n\n        for (i = 0; i < 4; ++i) {\n            for (var j = 0; j < Encoder.CBANDS; ++j) {\n                gfc.nb_1[i][j] = 1e20;\n                gfc.nb_2[i][j] = 1e20;\n                gfc.nb_s1[i][j] = gfc.nb_s2[i][j] = 1.0;\n            }\n            for (var sb = 0; sb < Encoder.SBMAX_l; sb++) {\n                gfc.en[i].l[sb] = 1e20;\n                gfc.thm[i].l[sb] = 1e20;\n            }\n            for (var j = 0; j < 3; ++j) {\n                for (var sb = 0; sb < Encoder.SBMAX_s; sb++) {\n                    gfc.en[i].s[sb][j] = 1e20;\n                    gfc.thm[i].s[sb][j] = 1e20;\n                }\n                gfc.nsPsy.lastAttacks[i] = 0;\n            }\n            for (var j = 0; j < 9; j++)\n                gfc.nsPsy.last_en_subshort[i][j] = 10.;\n        }\n\n        /* init. for loudness approx. -jd 2001 mar 27 */\n        gfc.loudness_sq_save[0] = gfc.loudness_sq_save[1] = 0.0;\n\n        /*************************************************************************\n         * now compute the psychoacoustic model specific constants\n         ************************************************************************/\n        /* compute numlines, bo, bm, bval, bval_width, mld */\n\n        gfc.npart_l = init_numline(gfc.numlines_l, gfc.bo_l, gfc.bm_l, bval,\n            bval_width, gfc.mld_l, gfc.PSY.bo_l_weight, sfreq,\n            Encoder.BLKSIZE, gfc.scalefac_band.l, Encoder.BLKSIZE\n            / (2.0 * 576), Encoder.SBMAX_l);\n        assert(gfc.npart_l < Encoder.CBANDS);\n        /* compute the spreading function */\n        for (i = 0; i < gfc.npart_l; i++) {\n            var snr = snr_l_a;\n            if (bval[i] >= bvl_a) {\n                snr = snr_l_b * (bval[i] - bvl_a) / (bvl_b - bvl_a) + snr_l_a\n                    * (bvl_b - bval[i]) / (bvl_b - bvl_a);\n            }\n            norm[i] = Math.pow(10.0, snr / 10.0);\n            if (gfc.numlines_l[i] > 0) {\n                gfc.rnumlines_l[i] = 1.0 / gfc.numlines_l[i];\n            } else {\n                gfc.rnumlines_l[i] = 0;\n            }\n        }\n        gfc.s3_ll = init_s3_values(gfc.s3ind, gfc.npart_l, bval, bval_width,\n            norm, useOldS3);\n\n        /* compute long block specific values, ATH and MINVAL */\n        var j = 0;\n        for (i = 0; i < gfc.npart_l; i++) {\n            var x;\n\n            /* ATH */\n            x = Float.MAX_VALUE;\n            for (var k = 0; k < gfc.numlines_l[i]; k++, j++) {\n                var freq = sfreq * j / (1000.0 * Encoder.BLKSIZE);\n                var level;\n                /*\n                 * ATH below 100 Hz constant, not further climbing\n                 */\n                level = this.ATHformula(freq * 1000, gfp) - 20;\n                // scale to FFT units; returned value is in dB\n                level = Math.pow(10., 0.1 * level);\n                // convert from dB . energy\n                level *= gfc.numlines_l[i];\n                if (x > level)\n                    x = level;\n            }\n            gfc.ATH.cb_l[i] = x;\n\n            /*\n             * MINVAL. For low freq, the strength of the masking is limited by\n             * minval this is an ISO MPEG1 thing, dont know if it is really\n             * needed\n             */\n            /*\n             * FIXME: it does work to reduce low-freq problems in S53-Wind-Sax\n             * and lead-voice samples, but introduces some 3 kbps bit bloat too.\n             * TODO: Further refinement of the shape of this hack.\n             */\n            x = -20 + bval[i] * 20 / 10;\n            if (x > 6) {\n                x = 100;\n            }\n            if (x < -15) {\n                x = -15;\n            }\n            x -= 8.;\n            gfc.minval_l[i] = (Math.pow(10.0, x / 10.) * gfc.numlines_l[i]);\n        }\n\n        /************************************************************************\n         * do the same things for short blocks\n         ************************************************************************/\n        gfc.npart_s = init_numline(gfc.numlines_s, gfc.bo_s, gfc.bm_s, bval,\n            bval_width, gfc.mld_s, gfc.PSY.bo_s_weight, sfreq,\n            Encoder.BLKSIZE_s, gfc.scalefac_band.s, Encoder.BLKSIZE_s\n            / (2.0 * 192), Encoder.SBMAX_s);\n        assert(gfc.npart_s < Encoder.CBANDS);\n\n        /* SNR formula. short block is normalized by SNR. is it still right ? */\n        j = 0;\n        for (i = 0; i < gfc.npart_s; i++) {\n            var x;\n            var snr = snr_s_a;\n            if (bval[i] >= bvl_a) {\n                snr = snr_s_b * (bval[i] - bvl_a) / (bvl_b - bvl_a) + snr_s_a\n                    * (bvl_b - bval[i]) / (bvl_b - bvl_a);\n            }\n            norm[i] = Math.pow(10.0, snr / 10.0);\n\n            /* ATH */\n            x = Float.MAX_VALUE;\n            for (var k = 0; k < gfc.numlines_s[i]; k++, j++) {\n                var freq = sfreq * j / (1000.0 * Encoder.BLKSIZE_s);\n                var level;\n                /* freq = Min(.1,freq); */\n                /*\n                 * ATH below 100 Hz constant, not\n                 * further climbing\n                 */\n                level = this.ATHformula(freq * 1000, gfp) - 20;\n                // scale to FFT units; returned value is in dB\n                level = Math.pow(10., 0.1 * level);\n                // convert from dB . energy\n                level *= gfc.numlines_s[i];\n                if (x > level)\n                    x = level;\n            }\n            gfc.ATH.cb_s[i] = x;\n\n            /*\n             * MINVAL. For low freq, the strength of the masking is limited by\n             * minval this is an ISO MPEG1 thing, dont know if it is really\n             * needed\n             */\n            x = (-7.0 + bval[i] * 7.0 / 12.0);\n            if (bval[i] > 12) {\n                x *= 1 + Math.log(1 + x) * 3.1;\n            }\n            if (bval[i] < 12) {\n                x *= 1 + Math.log(1 - x) * 2.3;\n            }\n            if (x < -15) {\n                x = -15;\n            }\n            x -= 8;\n            gfc.minval_s[i] = Math.pow(10.0, x / 10)\n                * gfc.numlines_s[i];\n        }\n\n        gfc.s3_ss = init_s3_values(gfc.s3ind_s, gfc.npart_s, bval, bval_width,\n            norm, useOldS3);\n\n        init_mask_add_max_values();\n        fft.init_fft(gfc);\n\n        /* setup temporal masking */\n        gfc.decay = Math.exp(-1.0 * LOG10\n            / (temporalmask_sustain_sec * sfreq / 192.0));\n\n        {\n            var msfix;\n            msfix = NS_MSFIX;\n            if ((gfp.exp_nspsytune & 2) != 0)\n                msfix = 1.0;\n            if (Math.abs(gfp.msfix) > 0.0)\n                msfix = gfp.msfix;\n            gfp.msfix = msfix;\n\n            /*\n             * spread only from npart_l bands. Normally, we use the spreading\n             * function to convolve from npart_l down to npart_l bands\n             */\n            for (var b = 0; b < gfc.npart_l; b++)\n                if (gfc.s3ind[b][1] > gfc.npart_l - 1)\n                    gfc.s3ind[b][1] = gfc.npart_l - 1;\n        }\n\n        /*\n         * prepare for ATH auto adjustment: we want to decrease the ATH by 12 dB\n         * per second\n         */\n        var frame_duration = (576. * gfc.mode_gr / sfreq);\n        gfc.ATH.decay = Math.pow(10., -12. / 10. * frame_duration);\n        gfc.ATH.adjust = 0.01;\n        /* minimum, for leading low loudness */\n        gfc.ATH.adjustLimit = 1.0;\n        /* on lead, allow adjust up to maximum */\n\n        assert(gfc.bo_l[Encoder.SBMAX_l - 1] <= gfc.npart_l);\n        assert(gfc.bo_s[Encoder.SBMAX_s - 1] <= gfc.npart_s);\n\n        if (gfp.ATHtype != -1) {\n            /* compute equal loudness weights (eql_w) */\n            var freq;\n            var freq_inc = gfp.out_samplerate\n                / (Encoder.BLKSIZE);\n            var eql_balance = 0.0;\n            freq = 0.0;\n            for (i = 0; i < Encoder.BLKSIZE / 2; ++i) {\n                /* convert ATH dB to relative power (not dB) */\n                /* to determine eql_w */\n                freq += freq_inc;\n                gfc.ATH.eql_w[i] = 1. / Math.pow(10, this.ATHformula(freq, gfp) / 10);\n                eql_balance += gfc.ATH.eql_w[i];\n            }\n            eql_balance = 1.0 / eql_balance;\n            for (i = Encoder.BLKSIZE / 2; --i >= 0;) { /* scale weights */\n                gfc.ATH.eql_w[i] *= eql_balance;\n            }\n        }\n        {\n            for (var b = j = 0; b < gfc.npart_s; ++b) {\n                for (i = 0; i < gfc.numlines_s[b]; ++i) {\n                    ++j;\n                }\n            }\n            assert(j == 129);\n            for (var b = j = 0; b < gfc.npart_l; ++b) {\n                for (i = 0; i < gfc.numlines_l[b]; ++i) {\n                    ++j;\n                }\n            }\n            assert(j == 513);\n        }\n        j = 0;\n        for (i = 0; i < gfc.npart_l; i++) {\n            var freq = sfreq * (j + gfc.numlines_l[i] / 2) / (1.0 * Encoder.BLKSIZE);\n            gfc.mld_cb_l[i] = stereo_demask(freq);\n            j += gfc.numlines_l[i];\n        }\n        for (; i < Encoder.CBANDS; ++i) {\n            gfc.mld_cb_l[i] = 1;\n        }\n        j = 0;\n        for (i = 0; i < gfc.npart_s; i++) {\n            var freq = sfreq * (j + gfc.numlines_s[i] / 2) / (1.0 * Encoder.BLKSIZE_s);\n            gfc.mld_cb_s[i] = stereo_demask(freq);\n            j += gfc.numlines_s[i];\n        }\n        for (; i < Encoder.CBANDS; ++i) {\n            gfc.mld_cb_s[i] = 1;\n        }\n        return 0;\n    }\n\n    /**\n     * Those ATH formulas are returning their minimum value for input = -1\n     */\n    function ATHformula_GB(f, value) {\n        /**\n         * <PRE>\n         *  from Painter & Spanias\n         *           modified by Gabriel Bouvigne to better fit the reality\n         *           ath =    3.640 * pow(f,-0.8)\n         *           - 6.800 * exp(-0.6*pow(f-3.4,2.0))\n         *           + 6.000 * exp(-0.15*pow(f-8.7,2.0))\n         *           + 0.6* 0.001 * pow(f,4.0);\n         *\n         *\n         *           In the past LAME was using the Painter &Spanias formula.\n         *           But we had some recurrent problems with HF content.\n         *           We measured real ATH values, and found the older formula\n         *           to be inaccurate in the higher part. So we made this new\n         *           formula and this solved most of HF problematic test cases.\n         *           The tradeoff is that in VBR mode it increases a lot the\n         *           bitrate.\n         * </PRE>\n         */\n\n        /*\n         * This curve can be adjusted according to the VBR scale: it adjusts\n         * from something close to Painter & Spanias on V9 up to Bouvigne's\n         * formula for V0. This way the VBR bitrate is more balanced according\n         * to the -V value.\n         */\n\n        // the following Hack allows to ask for the lowest value\n        if (f < -.3)\n            f = 3410;\n\n        // convert to khz\n        f /= 1000;\n        f = Math.max(0.1, f);\n        var ath = 3.640 * Math.pow(f, -0.8) - 6.800\n            * Math.exp(-0.6 * Math.pow(f - 3.4, 2.0)) + 6.000\n            * Math.exp(-0.15 * Math.pow(f - 8.7, 2.0))\n            + (0.6 + 0.04 * value) * 0.001 * Math.pow(f, 4.0);\n        return ath;\n    }\n\n    this.ATHformula = function (f, gfp) {\n        var ath;\n        switch (gfp.ATHtype) {\n            case 0:\n                ath = ATHformula_GB(f, 9);\n                break;\n            case 1:\n                // over sensitive, should probably be removed\n                ath = ATHformula_GB(f, -1);\n                break;\n            case 2:\n                ath = ATHformula_GB(f, 0);\n                break;\n            case 3:\n                // modification of GB formula by Roel\n                ath = ATHformula_GB(f, 1) + 6;\n                break;\n            case 4:\n                ath = ATHformula_GB(f, gfp.ATHcurve);\n                break;\n            default:\n                ath = ATHformula_GB(f, 0);\n                break;\n        }\n        return ath;\n    }\n\n}\n\nmodule.exports = PsyModel;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/_lamejs@1.2.1@lamejs/src/js/PsyModel.js\n// module id = 2knq\n// module chunks = 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sourceURL=webpack-internal:///2knq\n')},"2kvA":function(module,exports,__webpack_require__){"use strict";eval("\n\nexports.__esModule = true;\nexports.isInContainer = exports.getScrollContainer = exports.isScroll = exports.getStyle = exports.once = exports.off = exports.on = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; /* istanbul ignore next */\n\nexports.hasClass = hasClass;\nexports.addClass = addClass;\nexports.removeClass = removeClass;\nexports.setStyle = setStyle;\n\nvar _vue = __webpack_require__(\"7+uW\");\n\nvar _vue2 = _interopRequireDefault(_vue);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nvar isServer = _vue2.default.prototype.$isServer;\nvar SPECIAL_CHARS_REGEXP = /([\\:\\-\\_]+(.))/g;\nvar MOZ_HACK_REGEXP = /^moz([A-Z])/;\nvar ieVersion = isServer ? 0 : Number(document.documentMode);\n\n/* istanbul ignore next */\nvar trim = function trim(string) {\n return (string || '').replace(/^[\\s\\uFEFF]+|[\\s\\uFEFF]+$/g, '');\n};\n/* istanbul ignore next */\nvar camelCase = function camelCase(name) {\n return name.replace(SPECIAL_CHARS_REGEXP, function (_, separator, letter, offset) {\n return offset ? letter.toUpperCase() : letter;\n }).replace(MOZ_HACK_REGEXP, 'Moz$1');\n};\n\n/* istanbul ignore next */\nvar on = exports.on = function () {\n if (!isServer && document.addEventListener) {\n return function (element, event, handler) {\n if (element && event && handler) {\n element.addEventListener(event, handler, false);\n }\n };\n } else {\n return function (element, event, handler) {\n if (element && event && handler) {\n element.attachEvent('on' + event, handler);\n }\n };\n }\n}();\n\n/* istanbul ignore next */\nvar off = exports.off = function () {\n if (!isServer && document.removeEventListener) {\n return function (element, event, handler) {\n if (element && event) {\n element.removeEventListener(event, handler, false);\n }\n };\n } else {\n return function (element, event, handler) {\n if (element && event) {\n element.detachEvent('on' + event, handler);\n }\n };\n }\n}();\n\n/* istanbul ignore next */\nvar once = exports.once = function once(el, event, fn) {\n var listener = function listener() {\n if (fn) {\n fn.apply(this, arguments);\n }\n off(el, event, listener);\n };\n on(el, event, listener);\n};\n\n/* istanbul ignore next */\nfunction hasClass(el, cls) {\n if (!el || !cls) return false;\n if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.');\n if (el.classList) {\n return el.classList.contains(cls);\n } else {\n return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;\n }\n};\n\n/* istanbul ignore next */\nfunction addClass(el, cls) {\n if (!el) return;\n var curClass = el.className;\n var classes = (cls || '').split(' ');\n\n for (var i = 0, j = classes.length; i < j; i++) {\n var clsName = classes[i];\n if (!clsName) continue;\n\n if (el.classList) {\n el.classList.add(clsName);\n } else if (!hasClass(el, clsName)) {\n curClass += ' ' + clsName;\n }\n }\n if (!el.classList) {\n el.className = curClass;\n }\n};\n\n/* istanbul ignore next */\nfunction removeClass(el, cls) {\n if (!el || !cls) return;\n var classes = cls.split(' ');\n var curClass = ' ' + el.className + ' ';\n\n for (var i = 0, j = classes.length; i < j; i++) {\n var clsName = classes[i];\n if (!clsName) continue;\n\n if (el.classList) {\n el.classList.remove(clsName);\n } else if (hasClass(el, clsName)) {\n curClass = curClass.replace(' ' + clsName + ' ', ' ');\n }\n }\n if (!el.classList) {\n el.className = trim(curClass);\n }\n};\n\n/* istanbul ignore next */\nvar getStyle = exports.getStyle = ieVersion < 9 ? function (element, styleName) {\n if (isServer) return;\n if (!element || !styleName) return null;\n styleName = camelCase(styleName);\n if (styleName === 'float') {\n styleName = 'styleFloat';\n }\n try {\n switch (styleName) {\n case 'opacity':\n try {\n return element.filters.item('alpha').opacity / 100;\n } catch (e) {\n return 1.0;\n }\n default:\n return element.style[styleName] || element.currentStyle ? element.currentStyle[styleName] : null;\n }\n } catch (e) {\n return element.style[styleName];\n }\n} : function (element, styleName) {\n if (isServer) return;\n if (!element || !styleName) return null;\n styleName = camelCase(styleName);\n if (styleName === 'float') {\n styleName = 'cssFloat';\n }\n try {\n var computed = document.defaultView.getComputedStyle(element, '');\n return element.style[styleName] || computed ? computed[styleName] : null;\n } catch (e) {\n return element.style[styleName];\n }\n};\n\n/* istanbul ignore next */\nfunction setStyle(element, styleName, value) {\n if (!element || !styleName) return;\n\n if ((typeof styleName === 'undefined' ? 'undefined' : _typeof(styleName)) === 'object') {\n for (var prop in styleName) {\n if (styleName.hasOwnProperty(prop)) {\n setStyle(element, prop, styleName[prop]);\n }\n }\n } else {\n styleName = camelCase(styleName);\n if (styleName === 'opacity' && ieVersion < 9) {\n element.style.filter = isNaN(value) ? '' : 'alpha(opacity=' + value * 100 + ')';\n } else {\n element.style[styleName] = value;\n }\n }\n};\n\nvar isScroll = exports.isScroll = function isScroll(el, vertical) {\n if (isServer) return;\n\n var determinedDirection = vertical !== null || vertical !== undefined;\n var overflow = determinedDirection ? vertical ? getStyle(el, 'overflow-y') : getStyle(el, 'overflow-x') : getStyle(el, 'overflow');\n\n return overflow.match(/(scroll|auto)/);\n};\n\nvar getScrollContainer = exports.getScrollContainer = function getScrollContainer(el, vertical) {\n if (isServer) return;\n\n var parent = el;\n while (parent) {\n if ([window, document, document.documentElement].includes(parent)) {\n return window;\n }\n if (isScroll(parent, vertical)) {\n return parent;\n }\n parent = parent.parentNode;\n }\n\n return parent;\n};\n\nvar isInContainer = exports.isInContainer = function isInContainer(el, container) {\n if (isServer || !el || !container) return false;\n\n var elRect = el.getBoundingClientRect();\n var containerRect = void 0;\n\n if ([window, document, document.documentElement, null, undefined].includes(container)) {\n containerRect = {\n top: 0,\n right: window.innerWidth,\n bottom: window.innerHeight,\n left: 0\n };\n } else {\n containerRect = container.getBoundingClientRect();\n }\n\n return elRect.top < containerRect.bottom && elRect.bottom > containerRect.top && elRect.right > containerRect.left && elRect.left < containerRect.right;\n};//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"2kvA.js","sources":["webpack:///./node_modules/element-ui/lib/utils/dom.js?da4b"],"sourcesContent":["'use strict';\n\nexports.__esModule = true;\nexports.isInContainer = exports.getScrollContainer = exports.isScroll = exports.getStyle = exports.once = exports.off = exports.on = undefined;\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? 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letter.toUpperCase() : letter;\n  }).replace(MOZ_HACK_REGEXP, 'Moz$1');\n};\n\n/* istanbul ignore next */\nvar on = exports.on = function () {\n  if (!isServer && document.addEventListener) {\n    return function (element, event, handler) {\n      if (element && event && handler) {\n        element.addEventListener(event, handler, false);\n      }\n    };\n  } else {\n    return function (element, event, handler) {\n      if (element && event && handler) {\n        element.attachEvent('on' + event, handler);\n      }\n    };\n  }\n}();\n\n/* istanbul ignore next */\nvar off = exports.off = function () {\n  if (!isServer && document.removeEventListener) {\n    return function (element, event, handler) {\n      if (element && event) {\n        element.removeEventListener(event, handler, false);\n      }\n    };\n  } else {\n    return function (element, event, handler) {\n      if (element && event) {\n        element.detachEvent('on' + event, handler);\n      }\n    };\n  }\n}();\n\n/* istanbul ignore next */\nvar once = exports.once = function once(el, event, fn) {\n  var listener = function listener() {\n    if (fn) {\n      fn.apply(this, arguments);\n    }\n    off(el, event, listener);\n  };\n  on(el, event, listener);\n};\n\n/* istanbul ignore next */\nfunction hasClass(el, cls) {\n  if (!el || !cls) return false;\n  if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.');\n  if (el.classList) {\n    return el.classList.contains(cls);\n  } else {\n    return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;\n  }\n};\n\n/* istanbul ignore next */\nfunction addClass(el, cls) {\n  if (!el) return;\n  var curClass = el.className;\n  var classes = (cls || '').split(' ');\n\n  for (var i = 0, j = classes.length; i < j; i++) {\n    var clsName = classes[i];\n    if (!clsName) continue;\n\n    if (el.classList) {\n      el.classList.add(clsName);\n    } else if (!hasClass(el, clsName)) {\n      curClass += ' ' + clsName;\n    }\n  }\n  if (!el.classList) {\n    el.className = curClass;\n  }\n};\n\n/* istanbul ignore next */\nfunction removeClass(el, cls) {\n  if (!el || !cls) return;\n  var classes = cls.split(' ');\n  var curClass = ' ' + el.className + ' ';\n\n  for (var i = 0, j = classes.length; i < j; i++) {\n    var clsName = classes[i];\n    if (!clsName) continue;\n\n    if (el.classList) {\n      el.classList.remove(clsName);\n    } else if (hasClass(el, clsName)) {\n      curClass = curClass.replace(' ' + clsName + ' ', ' ');\n    }\n  }\n  if (!el.classList) {\n    el.className = trim(curClass);\n  }\n};\n\n/* istanbul ignore next */\nvar getStyle = exports.getStyle = ieVersion < 9 ? function (element, styleName) {\n  if (isServer) return;\n  if (!element || !styleName) return null;\n  styleName = camelCase(styleName);\n  if (styleName === 'float') {\n    styleName = 'styleFloat';\n  }\n  try {\n    switch (styleName) {\n      case 'opacity':\n        try {\n          return element.filters.item('alpha').opacity / 100;\n        } catch (e) {\n          return 1.0;\n        }\n      default:\n        return element.style[styleName] || element.currentStyle ? element.currentStyle[styleName] : null;\n    }\n  } catch (e) {\n    return element.style[styleName];\n  }\n} : function (element, styleName) {\n  if (isServer) return;\n  if (!element || !styleName) return null;\n  styleName = camelCase(styleName);\n  if (styleName === 'float') {\n    styleName = 'cssFloat';\n  }\n  try {\n    var computed = document.defaultView.getComputedStyle(element, '');\n    return element.style[styleName] || computed ? computed[styleName] : null;\n  } catch (e) {\n    return element.style[styleName];\n  }\n};\n\n/* istanbul ignore next */\nfunction setStyle(element, styleName, value) {\n  if (!element || !styleName) return;\n\n  if ((typeof styleName === 'undefined' ? 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'' : 'alpha(opacity=' + value * 100 + ')';\n    } else {\n      element.style[styleName] = value;\n    }\n  }\n};\n\nvar isScroll = exports.isScroll = function isScroll(el, vertical) {\n  if (isServer) return;\n\n  var determinedDirection = vertical !== null || vertical !== undefined;\n  var overflow = determinedDirection ? vertical ? getStyle(el, 'overflow-y') : getStyle(el, 'overflow-x') : getStyle(el, 'overflow');\n\n  return overflow.match(/(scroll|auto)/);\n};\n\nvar getScrollContainer = exports.getScrollContainer = function getScrollContainer(el, vertical) {\n  if (isServer) return;\n\n  var parent = el;\n  while (parent) {\n    if ([window, document, document.documentElement].includes(parent)) {\n      return window;\n    }\n    if (isScroll(parent, vertical)) {\n      return parent;\n    }\n    parent = parent.parentNode;\n  }\n\n  return parent;\n};\n\nvar isInContainer = exports.isInContainer = function isInContainer(el, container) {\n  if (isServer || !el || !container) return false;\n\n  var elRect = el.getBoundingClientRect();\n  var containerRect = void 0;\n\n  if ([window, document, document.documentElement, null, undefined].includes(container)) {\n    containerRect = {\n      top: 0,\n      right: window.innerWidth,\n      bottom: window.innerHeight,\n      left: 0\n    };\n  } else {\n    containerRect = container.getBoundingClientRect();\n  }\n\n  return elRect.top < containerRect.bottom && elRect.bottom > containerRect.top && elRect.right > containerRect.left && elRect.left < containerRect.right;\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/element-ui/lib/utils/dom.js\n// module id = 2kvA\n// module chunks = 2"],"mappings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sourceRoot":""}\n//# sourceURL=webpack-internal:///2kvA\n")},"2tKw":function(module,exports){eval("function MeanBits(meanBits) {\n this.bits = meanBits;\n}\n\nmodule.exports = MeanBits;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,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\n//# sourceURL=webpack-internal:///2tKw\n")},"3Eo+":function(module,exports){eval("var id = 0;\nvar px = Math.random();\nmodule.exports = function (key) {\n return 'Symbol('.concat(key === undefined ? 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\n * The Vbr header (optionally) contains\n *
    \n *
  • frames total number of audio frames in the bitstream\n *
  • bytes total number of bytes in the bitstream\n *
  • toc table of contents\n *
\n *\n * toc (table of contents) gives seek points for random access.
\n * The ith entry determines the seek point for i-percent duration.
\n * seek point in bytes = (toc[i]/256.0) * total_bitstream_bytes
\n * e.g. half duration seek point = (toc[50]/256.0) * total_bitstream_bytes\n */\nVBRTag.NUMTOCENTRIES = 100;\nVBRTag.MAXFRAMESIZE = 2880;\n\nfunction VBRTag() {\n\n var lame;\n var bs;\n var v;\n\n this.setModules = function (_lame, _bs, _v) {\n lame = _lame;\n bs = _bs;\n v = _v;\n };\n\n var FRAMES_FLAG = 0x0001;\n var BYTES_FLAG = 0x0002;\n var TOC_FLAG = 0x0004;\n var VBR_SCALE_FLAG = 0x0008;\n\n var NUMTOCENTRIES = VBRTag.NUMTOCENTRIES;\n\n /**\n * (0xB40) the max freeformat 640 32kHz framesize.\n */\n var MAXFRAMESIZE = VBRTag.MAXFRAMESIZE;\n\n /**\n *
\n     *    4 bytes for Header Tag\n     *    4 bytes for Header Flags\n     *  100 bytes for entry (toc)\n     *    4 bytes for frame size\n     *    4 bytes for stream size\n     *    4 bytes for VBR scale. a VBR quality indicator: 0=best 100=worst\n     *   20 bytes for LAME tag.  for example, "LAME3.12 (beta 6)"\n     * ___________\n     *  140 bytes\n     * 
\n */\n var VBRHEADERSIZE = (NUMTOCENTRIES + 4 + 4 + 4 + 4 + 4);\n\n var LAMEHEADERSIZE = (VBRHEADERSIZE + 9 + 1 + 1 + 8\n + 1 + 1 + 3 + 1 + 1 + 2 + 4 + 2 + 2);\n\n /**\n * The size of the Xing header MPEG-1, bit rate in kbps.\n */\n var XING_BITRATE1 = 128;\n /**\n * The size of the Xing header MPEG-2, bit rate in kbps.\n */\n var XING_BITRATE2 = 64;\n /**\n * The size of the Xing header MPEG-2.5, bit rate in kbps.\n */\n var XING_BITRATE25 = 32;\n\n /**\n * ISO-8859-1 charset for byte to string operations.\n */\n var ISO_8859_1 = null; //Charset.forName("ISO-8859-1");\n\n /**\n * VBR header magic string.\n */\n var VBRTag0 = "Xing";\n /**\n * VBR header magic string (VBR == VBRMode.vbr_off).\n */\n var VBRTag1 = "Info";\n\n /**\n * Lookup table for fast CRC-16 computation. Uses the polynomial\n * x^16+x^15+x^2+1\n */\n var crc16Lookup = [0x0000, 0xC0C1, 0xC181, 0x0140,\n 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741,\n 0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41,\n 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40,\n 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941,\n 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40,\n 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540,\n 0xD701, 0x17C0, 0x1680, 0xD641, 0xD201, 0x12C0, 0x1380, 0xD341,\n 0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141,\n 0x3300, 0xF3C1, 0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740,\n 0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40,\n 0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41,\n 0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1, 0xE981, 0x2940,\n 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41,\n 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541,\n 0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340,\n 0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141,\n 0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740,\n 0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40,\n 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41,\n 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940,\n 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41,\n 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0x7580, 0xB541,\n 0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340,\n 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140,\n 0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741,\n 0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9D41,\n 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40,\n 0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941,\n 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40,\n 0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540,\n 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341,\n 0x4100, 0x81C1, 0x8081, 0x4040];\n\n /***********************************************************************\n * Robert Hegemann 2001-01-17\n ***********************************************************************/\n\n function addVbr(v, bitrate) {\n v.nVbrNumFrames++;\n v.sum += bitrate;\n v.seen++;\n\n if (v.seen < v.want) {\n return;\n }\n\n if (v.pos < v.size) {\n v.bag[v.pos] = v.sum;\n v.pos++;\n v.seen = 0;\n }\n if (v.pos == v.size) {\n for (var i = 1; i < v.size; i += 2) {\n v.bag[i / 2] = v.bag[i];\n }\n v.want *= 2;\n v.pos /= 2;\n }\n }\n\n function xingSeekTable(v, t) {\n if (v.pos <= 0)\n return;\n\n for (var i = 1; i < NUMTOCENTRIES; ++i) {\n var j = i / NUMTOCENTRIES, act, sum;\n var indx = 0 | (Math.floor(j * v.pos));\n if (indx > v.pos - 1)\n indx = v.pos - 1;\n act = v.bag[indx];\n sum = v.sum;\n var seek_point = 0 | (256. * act / sum);\n if (seek_point > 255)\n seek_point = 255;\n t[i] = 0xff & seek_point;\n }\n }\n\n /**\n * Add VBR entry, used to fill the VBR TOC entries.\n *\n * @param gfp\n * global flags\n */\n this.addVbrFrame = function (gfp) {\n var gfc = gfp.internal_flags;\n var kbps = Tables.bitrate_table[gfp.version][gfc.bitrate_index];\n assert(gfc.VBR_seek_table.bag != null);\n addVbr(gfc.VBR_seek_table, kbps);\n }\n\n /**\n * Read big endian integer (4-bytes) from header.\n *\n * @param buf\n * header containing the integer\n * @param bufPos\n * offset into the header\n * @return extracted integer\n */\n function extractInteger(buf, bufPos) {\n var x = buf[bufPos + 0] & 0xff;\n x <<= 8;\n x |= buf[bufPos + 1] & 0xff;\n x <<= 8;\n x |= buf[bufPos + 2] & 0xff;\n x <<= 8;\n x |= buf[bufPos + 3] & 0xff;\n return x;\n }\n\n /**\n * Write big endian integer (4-bytes) in the header.\n *\n * @param buf\n * header to write the integer into\n * @param bufPos\n * offset into the header\n * @param value\n * integer value to write\n */\n function createInteger(buf, bufPos, value) {\n buf[bufPos + 0] = 0xff & ((value >> 24) & 0xff);\n buf[bufPos + 1] = 0xff & ((value >> 16) & 0xff);\n buf[bufPos + 2] = 0xff & ((value >> 8) & 0xff);\n buf[bufPos + 3] = 0xff & (value & 0xff);\n }\n\n /**\n * Write big endian short (2-bytes) in the header.\n *\n * @param buf\n * header to write the integer into\n * @param bufPos\n * offset into the header\n * @param value\n * integer value to write\n */\n function createShort(buf, bufPos, value) {\n buf[bufPos + 0] = 0xff & ((value >> 8) & 0xff);\n buf[bufPos + 1] = 0xff & (value & 0xff);\n }\n\n /**\n * Check for magic strings (Xing/Info).\n *\n * @param buf\n * header to check\n * @param bufPos\n * header offset to check\n * @return magic string found\n */\n function isVbrTag(buf, bufPos) {\n return new String(buf, bufPos, VBRTag0.length(), ISO_8859_1)\n .equals(VBRTag0)\n || new String(buf, bufPos, VBRTag1.length(), ISO_8859_1)\n .equals(VBRTag1);\n }\n\n function shiftInBitsValue(x, n, v) {\n return 0xff & ((x << n) | (v & ~(-1 << n)));\n }\n\n /**\n * Construct the MP3 header using the settings of the global flags.\n *\n * \n *\n * @param gfp\n * global flags\n * @param buffer\n * header\n */\n function setLameTagFrameHeader(gfp, buffer) {\n var gfc = gfp.internal_flags;\n\n // MP3 Sync Word\n buffer[0] = shiftInBitsValue(buffer[0], 8, 0xff);\n\n buffer[1] = shiftInBitsValue(buffer[1], 3, 7);\n buffer[1] = shiftInBitsValue(buffer[1], 1,\n (gfp.out_samplerate < 16000) ? 0 : 1);\n // Version\n buffer[1] = shiftInBitsValue(buffer[1], 1, gfp.version);\n // 01 == Layer 3\n buffer[1] = shiftInBitsValue(buffer[1], 2, 4 - 3);\n // Error protection\n buffer[1] = shiftInBitsValue(buffer[1], 1, (!gfp.error_protection) ? 1\n : 0);\n\n // Bit rate\n buffer[2] = shiftInBitsValue(buffer[2], 4, gfc.bitrate_index);\n // Frequency\n buffer[2] = shiftInBitsValue(buffer[2], 2, gfc.samplerate_index);\n // Pad. Bit\n buffer[2] = shiftInBitsValue(buffer[2], 1, 0);\n // Priv. Bit\n buffer[2] = shiftInBitsValue(buffer[2], 1, gfp.extension);\n\n // Mode\n buffer[3] = shiftInBitsValue(buffer[3], 2, gfp.mode.ordinal());\n // Mode extension (Used with Joint Stereo)\n buffer[3] = shiftInBitsValue(buffer[3], 2, gfc.mode_ext);\n // Copy\n buffer[3] = shiftInBitsValue(buffer[3], 1, gfp.copyright);\n // Original\n buffer[3] = shiftInBitsValue(buffer[3], 1, gfp.original);\n // Emphasis\n buffer[3] = shiftInBitsValue(buffer[3], 2, gfp.emphasis);\n\n /* the default VBR header. 48 kbps layer III, no padding, no crc */\n /* but sampling freq, mode and copyright/copy protection taken */\n /* from first valid frame */\n buffer[0] = 0xff;\n var abyte = 0xff & (buffer[1] & 0xf1);\n var bitrate;\n if (1 == gfp.version) {\n bitrate = XING_BITRATE1;\n } else {\n if (gfp.out_samplerate < 16000)\n bitrate = XING_BITRATE25;\n else\n bitrate = XING_BITRATE2;\n }\n\n if (gfp.VBR == VbrMode.vbr_off)\n bitrate = gfp.brate;\n\n var bbyte;\n if (gfp.free_format)\n bbyte = 0x00;\n else\n bbyte = 0xff & (16 * lame.BitrateIndex(bitrate, gfp.version,\n gfp.out_samplerate));\n\n /*\n * Use as much of the info from the real frames in the Xing header:\n * samplerate, channels, crc, etc...\n */\n if (gfp.version == 1) {\n /* MPEG1 */\n buffer[1] = 0xff & (abyte | 0x0a);\n /* was 0x0b; */\n abyte = 0xff & (buffer[2] & 0x0d);\n /* AF keep also private bit */\n buffer[2] = 0xff & (bbyte | abyte);\n /* 64kbs MPEG1 frame */\n } else {\n /* MPEG2 */\n buffer[1] = 0xff & (abyte | 0x02);\n /* was 0x03; */\n abyte = 0xff & (buffer[2] & 0x0d);\n /* AF keep also private bit */\n buffer[2] = 0xff & (bbyte | abyte);\n /* 64kbs MPEG2 frame */\n }\n }\n\n /**\n * Get VBR tag information\n *\n * @param buf\n * header to analyze\n * @param bufPos\n * offset into the header\n * @return VBR tag data\n */\n this.getVbrTag = function (buf) {\n var pTagData = new VBRTagData();\n var bufPos = 0;\n\n /* get Vbr header data */\n pTagData.flags = 0;\n\n /* get selected MPEG header data */\n var hId = (buf[bufPos + 1] >> 3) & 1;\n var hSrIndex = (buf[bufPos + 2] >> 2) & 3;\n var hMode = (buf[bufPos + 3] >> 6) & 3;\n var hBitrate = ((buf[bufPos + 2] >> 4) & 0xf);\n hBitrate = Tables.bitrate_table[hId][hBitrate];\n\n /* check for FFE syncword */\n if ((buf[bufPos + 1] >> 4) == 0xE)\n pTagData.samprate = Tables.samplerate_table[2][hSrIndex];\n else\n pTagData.samprate = Tables.samplerate_table[hId][hSrIndex];\n\n /* determine offset of header */\n if (hId != 0) {\n /* mpeg1 */\n if (hMode != 3)\n bufPos += (32 + 4);\n else\n bufPos += (17 + 4);\n } else {\n /* mpeg2 */\n if (hMode != 3)\n bufPos += (17 + 4);\n else\n bufPos += (9 + 4);\n }\n\n if (!isVbrTag(buf, bufPos))\n return null;\n\n bufPos += 4;\n\n pTagData.hId = hId;\n\n /* get flags */\n var head_flags = pTagData.flags = extractInteger(buf, bufPos);\n bufPos += 4;\n\n if ((head_flags & FRAMES_FLAG) != 0) {\n pTagData.frames = extractInteger(buf, bufPos);\n bufPos += 4;\n }\n\n if ((head_flags & BYTES_FLAG) != 0) {\n pTagData.bytes = extractInteger(buf, bufPos);\n bufPos += 4;\n }\n\n if ((head_flags & TOC_FLAG) != 0) {\n if (pTagData.toc != null) {\n for (var i = 0; i < NUMTOCENTRIES; i++)\n pTagData.toc[i] = buf[bufPos + i];\n }\n bufPos += NUMTOCENTRIES;\n }\n\n pTagData.vbrScale = -1;\n\n if ((head_flags & VBR_SCALE_FLAG) != 0) {\n pTagData.vbrScale = extractInteger(buf, bufPos);\n bufPos += 4;\n }\n\n pTagData.headersize = ((hId + 1) * 72000 * hBitrate)\n / pTagData.samprate;\n\n bufPos += 21;\n var encDelay = buf[bufPos + 0] << 4;\n encDelay += buf[bufPos + 1] >> 4;\n var encPadding = (buf[bufPos + 1] & 0x0F) << 8;\n encPadding += buf[bufPos + 2] & 0xff;\n /* check for reasonable values (this may be an old Xing header, */\n /* not a INFO tag) */\n if (encDelay < 0 || encDelay > 3000)\n encDelay = -1;\n if (encPadding < 0 || encPadding > 3000)\n encPadding = -1;\n\n pTagData.encDelay = encDelay;\n pTagData.encPadding = encPadding;\n\n /* success */\n return pTagData;\n }\n\n /**\n * Initializes the header\n *\n * @param gfp\n * global flags\n */\n this.InitVbrTag = function (gfp) {\n var gfc = gfp.internal_flags;\n\n /**\n *
\n         * Xing VBR pretends to be a 48kbs layer III frame.  (at 44.1kHz).\n         * (at 48kHz they use 56kbs since 48kbs frame not big enough for\n         * table of contents)\n         * let\'s always embed Xing header inside a 64kbs layer III frame.\n         * this gives us enough room for a LAME version string too.\n         * size determined by sampling frequency (MPEG1)\n         * 32kHz:    216 bytes@48kbs    288bytes@ 64kbs\n         * 44.1kHz:  156 bytes          208bytes@64kbs     (+1 if padding = 1)\n         * 48kHz:    144 bytes          192\n         *\n         * MPEG 2 values are the same since the framesize and samplerate\n         * are each reduced by a factor of 2.\n         * 
\n */\n var kbps_header;\n if (1 == gfp.version) {\n kbps_header = XING_BITRATE1;\n } else {\n if (gfp.out_samplerate < 16000)\n kbps_header = XING_BITRATE25;\n else\n kbps_header = XING_BITRATE2;\n }\n\n if (gfp.VBR == VbrMode.vbr_off)\n kbps_header = gfp.brate;\n\n // make sure LAME Header fits into Frame\n var totalFrameSize = ((gfp.version + 1) * 72000 * kbps_header)\n / gfp.out_samplerate;\n var headerSize = (gfc.sideinfo_len + LAMEHEADERSIZE);\n gfc.VBR_seek_table.TotalFrameSize = totalFrameSize;\n if (totalFrameSize < headerSize || totalFrameSize > MAXFRAMESIZE) {\n /* disable tag, it wont fit */\n gfp.bWriteVbrTag = false;\n return;\n }\n\n gfc.VBR_seek_table.nVbrNumFrames = 0;\n gfc.VBR_seek_table.nBytesWritten = 0;\n gfc.VBR_seek_table.sum = 0;\n\n gfc.VBR_seek_table.seen = 0;\n gfc.VBR_seek_table.want = 1;\n gfc.VBR_seek_table.pos = 0;\n\n if (gfc.VBR_seek_table.bag == null) {\n gfc.VBR_seek_table.bag = new int[400];\n gfc.VBR_seek_table.size = 400;\n }\n\n // write dummy VBR tag of all 0\'s into bitstream\n var buffer = new_byte(MAXFRAMESIZE);\n\n setLameTagFrameHeader(gfp, buffer);\n var n = gfc.VBR_seek_table.TotalFrameSize;\n for (var i = 0; i < n; ++i) {\n bs.add_dummy_byte(gfp, buffer[i] & 0xff, 1);\n }\n }\n\n /**\n * Fast CRC-16 computation (uses table crc16Lookup).\n *\n * @param value\n * @param crc\n * @return\n */\n function crcUpdateLookup(value, crc) {\n var tmp = crc ^ value;\n crc = (crc >> 8) ^ crc16Lookup[tmp & 0xff];\n return crc;\n }\n\n this.updateMusicCRC = function (crc, buffer, bufferPos, size) {\n for (var i = 0; i < size; ++i)\n crc[0] = crcUpdateLookup(buffer[bufferPos + i], crc[0]);\n }\n\n /**\n * Write LAME info: mini version + info on various switches used (Jonathan\n * Dee 2001/08/31).\n *\n * @param gfp\n * global flags\n * @param musicLength\n * music length\n * @param streamBuffer\n * pointer to output buffer\n * @param streamBufferPos\n * offset into the output buffer\n * @param crc\n * computation of CRC-16 of Lame Tag so far (starting at frame\n * sync)\n * @return number of bytes written to the stream\n */\n function putLameVBR(gfp, musicLength, streamBuffer, streamBufferPos, crc) {\n var gfc = gfp.internal_flags;\n var bytesWritten = 0;\n\n /* encoder delay */\n var encDelay = gfp.encoder_delay;\n /* encoder padding */\n var encPadding = gfp.encoder_padding;\n\n /* recall: gfp.VBR_q is for example set by the switch -V */\n /* gfp.quality by -q, -h, -f, etc */\n var quality = (100 - 10 * gfp.VBR_q - gfp.quality);\n\n var version = v.getLameVeryShortVersion();\n var vbr;\n var revision = 0x00;\n var revMethod;\n // numbering different in vbr_mode vs. Lame tag\n var vbrTypeTranslator = [1, 5, 3, 2, 4, 0, 3];\n var lowpass = 0 | (((gfp.lowpassfreq / 100.0) + .5) > 255 ? 255\n : (gfp.lowpassfreq / 100.0) + .5);\n var peakSignalAmplitude = 0;\n var radioReplayGain = 0;\n var audiophileReplayGain = 0;\n var noiseShaping = gfp.internal_flags.noise_shaping;\n var stereoMode = 0;\n var nonOptimal = 0;\n var sourceFreq = 0;\n var misc = 0;\n var musicCRC = 0;\n\n // psy model type: Gpsycho or NsPsytune\n var expNPsyTune = (gfp.exp_nspsytune & 1) != 0;\n var safeJoint = (gfp.exp_nspsytune & 2) != 0;\n var noGapMore = false;\n var noGapPrevious = false;\n var noGapCount = gfp.internal_flags.nogap_total;\n var noGapCurr = gfp.internal_flags.nogap_current;\n\n // 4 bits\n var athType = gfp.ATHtype;\n var flags = 0;\n\n // vbr modes\n var abrBitrate;\n switch (gfp.VBR) {\n case vbr_abr:\n abrBitrate = gfp.VBR_mean_bitrate_kbps;\n break;\n case vbr_off:\n abrBitrate = gfp.brate;\n break;\n default:\n abrBitrate = gfp.VBR_min_bitrate_kbps;\n }\n\n // revision and vbr method\n if (gfp.VBR.ordinal() < vbrTypeTranslator.length)\n vbr = vbrTypeTranslator[gfp.VBR.ordinal()];\n else\n vbr = 0x00; // unknown\n\n revMethod = 0x10 * revision + vbr;\n\n // ReplayGain\n if (gfc.findReplayGain) {\n if (gfc.RadioGain > 0x1FE)\n gfc.RadioGain = 0x1FE;\n if (gfc.RadioGain < -0x1FE)\n gfc.RadioGain = -0x1FE;\n\n // set name code\n radioReplayGain = 0x2000;\n // set originator code to `determined automatically\'\n radioReplayGain |= 0xC00;\n\n if (gfc.RadioGain >= 0) {\n // set gain adjustment\n radioReplayGain |= gfc.RadioGain;\n } else {\n // set the sign bit\n radioReplayGain |= 0x200;\n // set gain adjustment\n radioReplayGain |= -gfc.RadioGain;\n }\n }\n\n // peak sample\n if (gfc.findPeakSample)\n peakSignalAmplitude = Math\n .abs(0 | ((( gfc.PeakSample) / 32767.0) * Math.pow(2, 23) + .5));\n\n // nogap\n if (noGapCount != -1) {\n if (noGapCurr > 0)\n noGapPrevious = true;\n\n if (noGapCurr < noGapCount - 1)\n noGapMore = true;\n }\n\n // flags\n flags = athType + ((expNPsyTune ? 1 : 0) << 4)\n + ((safeJoint ? 1 : 0) << 5) + ((noGapMore ? 1 : 0) << 6)\n + ((noGapPrevious ? 1 : 0) << 7);\n\n if (quality < 0)\n quality = 0;\n\n // stereo mode field (Intensity stereo is not implemented)\n switch (gfp.mode) {\n case MONO:\n stereoMode = 0;\n break;\n case STEREO:\n stereoMode = 1;\n break;\n case DUAL_CHANNEL:\n stereoMode = 2;\n break;\n case JOINT_STEREO:\n if (gfp.force_ms)\n stereoMode = 4;\n else\n stereoMode = 3;\n break;\n case NOT_SET:\n //$FALL-THROUGH$\n default:\n stereoMode = 7;\n break;\n }\n\n if (gfp.in_samplerate <= 32000)\n sourceFreq = 0x00;\n else if (gfp.in_samplerate == 48000)\n sourceFreq = 0x02;\n else if (gfp.in_samplerate > 48000)\n sourceFreq = 0x03;\n else {\n // default is 44100Hz\n sourceFreq = 0x01;\n }\n\n // Check if the user overrided the default LAME behavior with some\n // nasty options\n if (gfp.short_blocks == ShortBlock.short_block_forced\n || gfp.short_blocks == ShortBlock.short_block_dispensed\n || ((gfp.lowpassfreq == -1) && (gfp.highpassfreq == -1)) || /* "-k" */\n (gfp.scale_left < gfp.scale_right)\n || (gfp.scale_left > gfp.scale_right)\n || (gfp.disable_reservoir && gfp.brate < 320) || gfp.noATH\n || gfp.ATHonly || (athType == 0) || gfp.in_samplerate <= 32000)\n nonOptimal = 1;\n\n misc = noiseShaping + (stereoMode << 2) + (nonOptimal << 5)\n + (sourceFreq << 6);\n\n musicCRC = gfc.nMusicCRC;\n\n // Write all this information into the stream\n\n createInteger(streamBuffer, streamBufferPos + bytesWritten, quality);\n bytesWritten += 4;\n\n for (var j = 0; j < 9; j++) {\n streamBuffer[streamBufferPos + bytesWritten + j] = 0xff & version .charAt(j);\n }\n bytesWritten += 9;\n\n streamBuffer[streamBufferPos + bytesWritten] = 0xff & revMethod;\n bytesWritten++;\n\n streamBuffer[streamBufferPos + bytesWritten] = 0xff & lowpass;\n bytesWritten++;\n\n createInteger(streamBuffer, streamBufferPos + bytesWritten,\n peakSignalAmplitude);\n bytesWritten += 4;\n\n createShort(streamBuffer, streamBufferPos + bytesWritten,\n radioReplayGain);\n bytesWritten += 2;\n\n createShort(streamBuffer, streamBufferPos + bytesWritten,\n audiophileReplayGain);\n bytesWritten += 2;\n\n streamBuffer[streamBufferPos + bytesWritten] = 0xff & flags;\n bytesWritten++;\n\n if (abrBitrate >= 255)\n streamBuffer[streamBufferPos + bytesWritten] = 0xFF;\n else\n streamBuffer[streamBufferPos + bytesWritten] = 0xff & abrBitrate;\n bytesWritten++;\n\n streamBuffer[streamBufferPos + bytesWritten] = 0xff & (encDelay >> 4);\n streamBuffer[streamBufferPos + bytesWritten + 1] = 0xff & ((encDelay << 4) + (encPadding >> 8));\n streamBuffer[streamBufferPos + bytesWritten + 2] = 0xff & encPadding;\n\n bytesWritten += 3;\n\n streamBuffer[streamBufferPos + bytesWritten] = 0xff & misc;\n bytesWritten++;\n\n // unused in rev0\n streamBuffer[streamBufferPos + bytesWritten++] = 0;\n\n createShort(streamBuffer, streamBufferPos + bytesWritten, gfp.preset);\n bytesWritten += 2;\n\n createInteger(streamBuffer, streamBufferPos + bytesWritten, musicLength);\n bytesWritten += 4;\n\n createShort(streamBuffer, streamBufferPos + bytesWritten, musicCRC);\n bytesWritten += 2;\n\n // Calculate tag CRC.... must be done here, since it includes previous\n // information\n\n for (var i = 0; i < bytesWritten; i++)\n crc = crcUpdateLookup(streamBuffer[streamBufferPos + i], crc);\n\n createShort(streamBuffer, streamBufferPos + bytesWritten, crc);\n bytesWritten += 2;\n\n return bytesWritten;\n }\n\n function skipId3v2(fpStream) {\n // seek to the beginning of the stream\n fpStream.seek(0);\n // read 10 bytes in case there\'s an ID3 version 2 header here\n var id3v2Header = new_byte(10);\n fpStream.readFully(id3v2Header);\n /* does the stream begin with the ID3 version 2 file identifier? */\n var id3v2TagSize;\n if (!new String(id3v2Header, "ISO-8859-1").startsWith("ID3")) {\n /*\n * the tag size (minus the 10-byte header) is encoded into four\n * bytes where the most significant bit is clear in each byte\n */\n id3v2TagSize = (((id3v2Header[6] & 0x7f) << 21)\n | ((id3v2Header[7] & 0x7f) << 14)\n | ((id3v2Header[8] & 0x7f) << 7) | (id3v2Header[9] & 0x7f))\n + id3v2Header.length;\n } else {\n /* no ID3 version 2 tag in this stream */\n id3v2TagSize = 0;\n }\n return id3v2TagSize;\n }\n\n this.getLameTagFrame = function (gfp, buffer) {\n var gfc = gfp.internal_flags;\n\n if (!gfp.bWriteVbrTag) {\n return 0;\n }\n if (gfc.Class_ID != Lame.LAME_ID) {\n return 0;\n }\n if (gfc.VBR_seek_table.pos <= 0) {\n return 0;\n }\n if (buffer.length < gfc.VBR_seek_table.TotalFrameSize) {\n return gfc.VBR_seek_table.TotalFrameSize;\n }\n\n Arrays.fill(buffer, 0, gfc.VBR_seek_table.TotalFrameSize, 0);\n\n // 4 bytes frame header\n setLameTagFrameHeader(gfp, buffer);\n\n // Create TOC entries\n var toc = new_byte(NUMTOCENTRIES);\n\n if (gfp.free_format) {\n for (var i = 1; i < NUMTOCENTRIES; ++i)\n toc[i] = 0xff & (255 * i / 100);\n } else {\n xingSeekTable(gfc.VBR_seek_table, toc);\n }\n\n // Start writing the tag after the zero frame\n var streamIndex = gfc.sideinfo_len;\n /**\n * Note: Xing header specifies that Xing data goes in the ancillary data\n * with NO ERROR PROTECTION. If error protecton in enabled, the Xing\n * data still starts at the same offset, and now it is in sideinfo data\n * block, and thus will not decode correctly by non-Xing tag aware\n * players\n */\n if (gfp.error_protection)\n streamIndex -= 2;\n\n // Put Vbr tag\n if (gfp.VBR == VbrMode.vbr_off) {\n buffer[streamIndex++] = 0xff & VBRTag1.charAt(0);\n buffer[streamIndex++] = 0xff & VBRTag1.charAt(1);\n buffer[streamIndex++] = 0xff & VBRTag1.charAt(2);\n buffer[streamIndex++] = 0xff & VBRTag1.charAt(3);\n\n } else {\n buffer[streamIndex++] = 0xff & VBRTag0.charAt(0);\n buffer[streamIndex++] = 0xff & VBRTag0.charAt(1);\n buffer[streamIndex++] = 0xff & VBRTag0.charAt(2);\n buffer[streamIndex++] = 0xff & VBRTag0.charAt(3);\n }\n\n // Put header flags\n createInteger(buffer, streamIndex, FRAMES_FLAG + BYTES_FLAG + TOC_FLAG\n + VBR_SCALE_FLAG);\n streamIndex += 4;\n\n // Put Total Number of frames\n createInteger(buffer, streamIndex, gfc.VBR_seek_table.nVbrNumFrames);\n streamIndex += 4;\n\n // Put total audio stream size, including Xing/LAME Header\n var streamSize = (gfc.VBR_seek_table.nBytesWritten + gfc.VBR_seek_table.TotalFrameSize);\n createInteger(buffer, streamIndex, 0 | streamSize);\n streamIndex += 4;\n\n /* Put TOC */\n System.arraycopy(toc, 0, buffer, streamIndex, toc.length);\n streamIndex += toc.length;\n\n if (gfp.error_protection) {\n // (jo) error_protection: add crc16 information to header\n bs.CRC_writeheader(gfc, buffer);\n }\n\n // work out CRC so far: initially crc = 0\n var crc = 0x00;\n for (var i = 0; i < streamIndex; i++)\n crc = crcUpdateLookup(buffer[i], crc);\n // Put LAME VBR info\n streamIndex += putLameVBR(gfp, streamSize, buffer, streamIndex, crc);\n\n return gfc.VBR_seek_table.TotalFrameSize;\n }\n\n /**\n * Write final VBR tag to the file.\n *\n * @param gfp\n * global flags\n * @param stream\n * stream to add the VBR tag to\n * @return 0 (OK), -1 else\n * @throws IOException\n * I/O error\n */\n this.putVbrTag = function (gfp, stream) {\n var gfc = gfp.internal_flags;\n\n if (gfc.VBR_seek_table.pos <= 0)\n return -1;\n\n // Seek to end of file\n stream.seek(stream.length());\n\n // Get file size, abort if file has zero length.\n if (stream.length() == 0)\n return -1;\n\n // The VBR tag may NOT be located at the beginning of the stream. If an\n // ID3 version 2 tag was added, then it must be skipped to write the VBR\n // tag data.\n var id3v2TagSize = skipId3v2(stream);\n\n // Seek to the beginning of the stream\n stream.seek(id3v2TagSize);\n\n var buffer = new_byte(MAXFRAMESIZE);\n var bytes = getLameTagFrame(gfp, buffer);\n if (bytes > buffer.length) {\n return -1;\n }\n\n if (bytes < 1) {\n return 0;\n }\n\n // Put it all to disk again\n stream.write(buffer, 0, bytes);\n // success\n return 0;\n }\n\n}\n\nmodule.exports = VBRTag;\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"3OGR.js","sources":["webpack:///./node_modules/_lamejs@1.2.1@lamejs/src/js/VBRTag.js?dce1"],"sourcesContent":["var common = require('./common.js');\nvar System = common.System;\nvar VbrMode = common.VbrMode;\nvar Float = common.Float;\nvar ShortBlock = common.ShortBlock;\nvar Util = common.Util;\nvar Arrays = common.Arrays;\nvar new_array_n = common.new_array_n;\nvar new_byte = common.new_byte;\nvar new_double = common.new_double;\nvar new_float = common.new_float;\nvar new_float_n = common.new_float_n;\nvar new_int = common.new_int;\nvar new_int_n = common.new_int_n;\nvar assert = common.assert;\n\n/**\n * A Vbr header may be present in the ancillary data field of the first frame of\n * an mp3 bitstream<BR>\n * The Vbr header (optionally) contains\n * <UL>\n * <LI>frames total number of audio frames in the bitstream\n * <LI>bytes total number of bytes in the bitstream\n * <LI>toc table of contents\n * </UL>\n *\n * toc (table of contents) gives seek points for random access.<BR>\n * The ith entry determines the seek point for i-percent duration.<BR>\n * seek point in bytes = (toc[i]/256.0) * total_bitstream_bytes<BR>\n * e.g. half duration seek point = (toc[50]/256.0) * total_bitstream_bytes\n */\nVBRTag.NUMTOCENTRIES = 100;\nVBRTag.MAXFRAMESIZE = 2880;\n\nfunction VBRTag() {\n\n    var lame;\n    var bs;\n    var v;\n\n    this.setModules = function (_lame, _bs, _v) {\n        lame = _lame;\n        bs = _bs;\n        v = _v;\n    };\n\n    var FRAMES_FLAG = 0x0001;\n    var BYTES_FLAG = 0x0002;\n    var TOC_FLAG = 0x0004;\n    var VBR_SCALE_FLAG = 0x0008;\n\n    var NUMTOCENTRIES = VBRTag.NUMTOCENTRIES;\n\n    /**\n     * (0xB40) the max freeformat 640 32kHz framesize.\n     */\n    var MAXFRAMESIZE = VBRTag.MAXFRAMESIZE;\n\n    /**\n     * <PRE>\n     *    4 bytes for Header Tag\n     *    4 bytes for Header Flags\n     *  100 bytes for entry (toc)\n     *    4 bytes for frame size\n     *    4 bytes for stream size\n     *    4 bytes for VBR scale. a VBR quality indicator: 0=best 100=worst\n     *   20 bytes for LAME tag.  for example, \"LAME3.12 (beta 6)\"\n     * ___________\n     *  140 bytes\n     * </PRE>\n     */\n    var VBRHEADERSIZE = (NUMTOCENTRIES + 4 + 4 + 4 + 4 + 4);\n\n    var LAMEHEADERSIZE = (VBRHEADERSIZE + 9 + 1 + 1 + 8\n    + 1 + 1 + 3 + 1 + 1 + 2 + 4 + 2 + 2);\n\n    /**\n     * The size of the Xing header MPEG-1, bit rate in kbps.\n     */\n    var XING_BITRATE1 = 128;\n    /**\n     * The size of the Xing header MPEG-2, bit rate in kbps.\n     */\n    var XING_BITRATE2 = 64;\n    /**\n     * The size of the Xing header MPEG-2.5, bit rate in kbps.\n     */\n    var XING_BITRATE25 = 32;\n\n    /**\n     * ISO-8859-1 charset for byte to string operations.\n     */\n    var ISO_8859_1 = null; //Charset.forName(\"ISO-8859-1\");\n\n    /**\n     * VBR header magic string.\n     */\n    var VBRTag0 = \"Xing\";\n    /**\n     * VBR header magic string (VBR == VBRMode.vbr_off).\n     */\n    var VBRTag1 = \"Info\";\n\n    /**\n     * Lookup table for fast CRC-16 computation. Uses the polynomial\n     * x^16+x^15+x^2+1\n     */\n    var crc16Lookup = [0x0000, 0xC0C1, 0xC181, 0x0140,\n        0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741,\n        0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41,\n        0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40,\n        0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941,\n        0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40,\n        0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540,\n        0xD701, 0x17C0, 0x1680, 0xD641, 0xD201, 0x12C0, 0x1380, 0xD341,\n        0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141,\n        0x3300, 0xF3C1, 0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740,\n        0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40,\n        0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41,\n        0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1, 0xE981, 0x2940,\n        0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41,\n        0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541,\n        0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340,\n        0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141,\n        0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740,\n        0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40,\n        0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41,\n        0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940,\n        0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41,\n        0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0x7580, 0xB541,\n        0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340,\n        0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140,\n        0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741,\n        0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9D41,\n        0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40,\n        0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941,\n        0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40,\n        0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540,\n        0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341,\n        0x4100, 0x81C1, 0x8081, 0x4040];\n\n    /***********************************************************************\n     * Robert Hegemann 2001-01-17\n     ***********************************************************************/\n\n    function addVbr(v, bitrate) {\n        v.nVbrNumFrames++;\n        v.sum += bitrate;\n        v.seen++;\n\n        if (v.seen < v.want) {\n            return;\n        }\n\n        if (v.pos < v.size) {\n            v.bag[v.pos] = v.sum;\n            v.pos++;\n            v.seen = 0;\n        }\n        if (v.pos == v.size) {\n            for (var i = 1; i < v.size; i += 2) {\n                v.bag[i / 2] = v.bag[i];\n            }\n            v.want *= 2;\n            v.pos /= 2;\n        }\n    }\n\n    function xingSeekTable(v, t) {\n        if (v.pos <= 0)\n            return;\n\n        for (var i = 1; i < NUMTOCENTRIES; ++i) {\n            var j = i / NUMTOCENTRIES, act, sum;\n            var indx = 0 | (Math.floor(j * v.pos));\n            if (indx > v.pos - 1)\n                indx = v.pos - 1;\n            act = v.bag[indx];\n            sum = v.sum;\n            var seek_point = 0 | (256. * act / sum);\n            if (seek_point > 255)\n                seek_point = 255;\n            t[i] = 0xff & seek_point;\n        }\n    }\n\n    /**\n     * Add VBR entry, used to fill the VBR TOC entries.\n     *\n     * @param gfp\n     *            global flags\n     */\n    this.addVbrFrame = function (gfp) {\n        var gfc = gfp.internal_flags;\n        var kbps = Tables.bitrate_table[gfp.version][gfc.bitrate_index];\n        assert(gfc.VBR_seek_table.bag != null);\n        addVbr(gfc.VBR_seek_table, kbps);\n    }\n\n    /**\n     * Read big endian integer (4-bytes) from header.\n     *\n     * @param buf\n     *            header containing the integer\n     * @param bufPos\n     *            offset into the header\n     * @return extracted integer\n     */\n    function extractInteger(buf, bufPos) {\n        var x = buf[bufPos + 0] & 0xff;\n        x <<= 8;\n        x |= buf[bufPos + 1] & 0xff;\n        x <<= 8;\n        x |= buf[bufPos + 2] & 0xff;\n        x <<= 8;\n        x |= buf[bufPos + 3] & 0xff;\n        return x;\n    }\n\n    /**\n     * Write big endian integer (4-bytes) in the header.\n     *\n     * @param buf\n     *            header to write the integer into\n     * @param bufPos\n     *            offset into the header\n     * @param value\n     *            integer value to write\n     */\n    function createInteger(buf, bufPos, value) {\n        buf[bufPos + 0] = 0xff & ((value >> 24) & 0xff);\n        buf[bufPos + 1] = 0xff & ((value >> 16) & 0xff);\n        buf[bufPos + 2] = 0xff & ((value >> 8) & 0xff);\n        buf[bufPos + 3] = 0xff & (value & 0xff);\n    }\n\n    /**\n     * Write big endian short (2-bytes) in the header.\n     *\n     * @param buf\n     *            header to write the integer into\n     * @param bufPos\n     *            offset into the header\n     * @param value\n     *            integer value to write\n     */\n    function createShort(buf, bufPos, value) {\n        buf[bufPos + 0] = 0xff & ((value >> 8) & 0xff);\n        buf[bufPos + 1] = 0xff & (value & 0xff);\n    }\n\n    /**\n     * Check for magic strings (Xing/Info).\n     *\n     * @param buf\n     *            header to check\n     * @param bufPos\n     *            header offset to check\n     * @return magic string found\n     */\n    function isVbrTag(buf, bufPos) {\n        return new String(buf, bufPos, VBRTag0.length(), ISO_8859_1)\n                .equals(VBRTag0)\n            || new String(buf, bufPos, VBRTag1.length(), ISO_8859_1)\n                .equals(VBRTag1);\n    }\n\n    function shiftInBitsValue(x, n, v) {\n        return 0xff & ((x << n) | (v & ~(-1 << n)));\n    }\n\n    /**\n     * Construct the MP3 header using the settings of the global flags.\n     *\n     * <img src=\"1000px-Mp3filestructure.svg.png\">\n     *\n     * @param gfp\n     *            global flags\n     * @param buffer\n     *            header\n     */\n    function setLameTagFrameHeader(gfp, buffer) {\n        var gfc = gfp.internal_flags;\n\n        // MP3 Sync Word\n        buffer[0] = shiftInBitsValue(buffer[0], 8, 0xff);\n\n        buffer[1] = shiftInBitsValue(buffer[1], 3, 7);\n        buffer[1] = shiftInBitsValue(buffer[1], 1,\n            (gfp.out_samplerate < 16000) ? 0 : 1);\n        // Version\n        buffer[1] = shiftInBitsValue(buffer[1], 1, gfp.version);\n        // 01 == Layer 3\n        buffer[1] = shiftInBitsValue(buffer[1], 2, 4 - 3);\n        // Error protection\n        buffer[1] = shiftInBitsValue(buffer[1], 1, (!gfp.error_protection) ? 1\n            : 0);\n\n        // Bit rate\n        buffer[2] = shiftInBitsValue(buffer[2], 4, gfc.bitrate_index);\n        // Frequency\n        buffer[2] = shiftInBitsValue(buffer[2], 2, gfc.samplerate_index);\n        // Pad. Bit\n        buffer[2] = shiftInBitsValue(buffer[2], 1, 0);\n        // Priv. Bit\n        buffer[2] = shiftInBitsValue(buffer[2], 1, gfp.extension);\n\n        // Mode\n        buffer[3] = shiftInBitsValue(buffer[3], 2, gfp.mode.ordinal());\n        // Mode extension (Used with Joint Stereo)\n        buffer[3] = shiftInBitsValue(buffer[3], 2, gfc.mode_ext);\n        // Copy\n        buffer[3] = shiftInBitsValue(buffer[3], 1, gfp.copyright);\n        // Original\n        buffer[3] = shiftInBitsValue(buffer[3], 1, gfp.original);\n        // Emphasis\n        buffer[3] = shiftInBitsValue(buffer[3], 2, gfp.emphasis);\n\n        /* the default VBR header. 48 kbps layer III, no padding, no crc */\n        /* but sampling freq, mode and copyright/copy protection taken */\n        /* from first valid frame */\n        buffer[0] = 0xff;\n        var abyte = 0xff & (buffer[1] & 0xf1);\n        var bitrate;\n        if (1 == gfp.version) {\n            bitrate = XING_BITRATE1;\n        } else {\n            if (gfp.out_samplerate < 16000)\n                bitrate = XING_BITRATE25;\n            else\n                bitrate = XING_BITRATE2;\n        }\n\n        if (gfp.VBR == VbrMode.vbr_off)\n            bitrate = gfp.brate;\n\n        var bbyte;\n        if (gfp.free_format)\n            bbyte = 0x00;\n        else\n            bbyte = 0xff & (16 * lame.BitrateIndex(bitrate, gfp.version,\n                    gfp.out_samplerate));\n\n        /*\n         * Use as much of the info from the real frames in the Xing header:\n         * samplerate, channels, crc, etc...\n         */\n        if (gfp.version == 1) {\n            /* MPEG1 */\n            buffer[1] = 0xff & (abyte | 0x0a);\n            /* was 0x0b; */\n            abyte = 0xff & (buffer[2] & 0x0d);\n            /* AF keep also private bit */\n            buffer[2] = 0xff & (bbyte | abyte);\n            /* 64kbs MPEG1 frame */\n        } else {\n            /* MPEG2 */\n            buffer[1] = 0xff & (abyte | 0x02);\n            /* was 0x03; */\n            abyte = 0xff & (buffer[2] & 0x0d);\n            /* AF keep also private bit */\n            buffer[2] = 0xff & (bbyte | abyte);\n            /* 64kbs MPEG2 frame */\n        }\n    }\n\n    /**\n     * Get VBR tag information\n     *\n     * @param buf\n     *            header to analyze\n     * @param bufPos\n     *            offset into the header\n     * @return VBR tag data\n     */\n    this.getVbrTag = function (buf) {\n        var pTagData = new VBRTagData();\n        var bufPos = 0;\n\n        /* get Vbr header data */\n        pTagData.flags = 0;\n\n        /* get selected MPEG header data */\n        var hId = (buf[bufPos + 1] >> 3) & 1;\n        var hSrIndex = (buf[bufPos + 2] >> 2) & 3;\n        var hMode = (buf[bufPos + 3] >> 6) & 3;\n        var hBitrate = ((buf[bufPos + 2] >> 4) & 0xf);\n        hBitrate = Tables.bitrate_table[hId][hBitrate];\n\n        /* check for FFE syncword */\n        if ((buf[bufPos + 1] >> 4) == 0xE)\n            pTagData.samprate = Tables.samplerate_table[2][hSrIndex];\n        else\n            pTagData.samprate = Tables.samplerate_table[hId][hSrIndex];\n\n        /* determine offset of header */\n        if (hId != 0) {\n            /* mpeg1 */\n            if (hMode != 3)\n                bufPos += (32 + 4);\n            else\n                bufPos += (17 + 4);\n        } else {\n            /* mpeg2 */\n            if (hMode != 3)\n                bufPos += (17 + 4);\n            else\n                bufPos += (9 + 4);\n        }\n\n        if (!isVbrTag(buf, bufPos))\n            return null;\n\n        bufPos += 4;\n\n        pTagData.hId = hId;\n\n        /* get flags */\n        var head_flags = pTagData.flags = extractInteger(buf, bufPos);\n        bufPos += 4;\n\n        if ((head_flags & FRAMES_FLAG) != 0) {\n            pTagData.frames = extractInteger(buf, bufPos);\n            bufPos += 4;\n        }\n\n        if ((head_flags & BYTES_FLAG) != 0) {\n            pTagData.bytes = extractInteger(buf, bufPos);\n            bufPos += 4;\n        }\n\n        if ((head_flags & TOC_FLAG) != 0) {\n            if (pTagData.toc != null) {\n                for (var i = 0; i < NUMTOCENTRIES; i++)\n                    pTagData.toc[i] = buf[bufPos + i];\n            }\n            bufPos += NUMTOCENTRIES;\n        }\n\n        pTagData.vbrScale = -1;\n\n        if ((head_flags & VBR_SCALE_FLAG) != 0) {\n            pTagData.vbrScale = extractInteger(buf, bufPos);\n            bufPos += 4;\n        }\n\n        pTagData.headersize = ((hId + 1) * 72000 * hBitrate)\n            / pTagData.samprate;\n\n        bufPos += 21;\n        var encDelay = buf[bufPos + 0] << 4;\n        encDelay += buf[bufPos + 1] >> 4;\n        var encPadding = (buf[bufPos + 1] & 0x0F) << 8;\n        encPadding += buf[bufPos + 2] & 0xff;\n        /* check for reasonable values (this may be an old Xing header, */\n        /* not a INFO tag) */\n        if (encDelay < 0 || encDelay > 3000)\n            encDelay = -1;\n        if (encPadding < 0 || encPadding > 3000)\n            encPadding = -1;\n\n        pTagData.encDelay = encDelay;\n        pTagData.encPadding = encPadding;\n\n        /* success */\n        return pTagData;\n    }\n\n    /**\n     * Initializes the header\n     *\n     * @param gfp\n     *            global flags\n     */\n    this.InitVbrTag = function (gfp) {\n        var gfc = gfp.internal_flags;\n\n        /**\n         * <PRE>\n         * Xing VBR pretends to be a 48kbs layer III frame.  (at 44.1kHz).\n         * (at 48kHz they use 56kbs since 48kbs frame not big enough for\n         * table of contents)\n         * let's always embed Xing header inside a 64kbs layer III frame.\n         * this gives us enough room for a LAME version string too.\n         * size determined by sampling frequency (MPEG1)\n         * 32kHz:    216 bytes@48kbs    288bytes@ 64kbs\n         * 44.1kHz:  156 bytes          208bytes@64kbs     (+1 if padding = 1)\n         * 48kHz:    144 bytes          192\n         *\n         * MPEG 2 values are the same since the framesize and samplerate\n         * are each reduced by a factor of 2.\n         * </PRE>\n         */\n        var kbps_header;\n        if (1 == gfp.version) {\n            kbps_header = XING_BITRATE1;\n        } else {\n            if (gfp.out_samplerate < 16000)\n                kbps_header = XING_BITRATE25;\n            else\n                kbps_header = XING_BITRATE2;\n        }\n\n        if (gfp.VBR == VbrMode.vbr_off)\n            kbps_header = gfp.brate;\n\n        // make sure LAME Header fits into Frame\n        var totalFrameSize = ((gfp.version + 1) * 72000 * kbps_header)\n            / gfp.out_samplerate;\n        var headerSize = (gfc.sideinfo_len + LAMEHEADERSIZE);\n        gfc.VBR_seek_table.TotalFrameSize = totalFrameSize;\n        if (totalFrameSize < headerSize || totalFrameSize > MAXFRAMESIZE) {\n            /* disable tag, it wont fit */\n            gfp.bWriteVbrTag = false;\n            return;\n        }\n\n        gfc.VBR_seek_table.nVbrNumFrames = 0;\n        gfc.VBR_seek_table.nBytesWritten = 0;\n        gfc.VBR_seek_table.sum = 0;\n\n        gfc.VBR_seek_table.seen = 0;\n        gfc.VBR_seek_table.want = 1;\n        gfc.VBR_seek_table.pos = 0;\n\n        if (gfc.VBR_seek_table.bag == null) {\n            gfc.VBR_seek_table.bag = new int[400];\n            gfc.VBR_seek_table.size = 400;\n        }\n\n        // write dummy VBR tag of all 0's into bitstream\n        var buffer = new_byte(MAXFRAMESIZE);\n\n        setLameTagFrameHeader(gfp, buffer);\n        var n = gfc.VBR_seek_table.TotalFrameSize;\n        for (var i = 0; i < n; ++i) {\n            bs.add_dummy_byte(gfp, buffer[i] & 0xff, 1);\n        }\n    }\n\n    /**\n     * Fast CRC-16 computation (uses table crc16Lookup).\n     *\n     * @param value\n     * @param crc\n     * @return\n     */\n    function crcUpdateLookup(value, crc) {\n        var tmp = crc ^ value;\n        crc = (crc >> 8) ^ crc16Lookup[tmp & 0xff];\n        return crc;\n    }\n\n    this.updateMusicCRC = function (crc, buffer, bufferPos, size) {\n        for (var i = 0; i < size; ++i)\n            crc[0] = crcUpdateLookup(buffer[bufferPos + i], crc[0]);\n    }\n\n    /**\n     * Write LAME info: mini version + info on various switches used (Jonathan\n     * Dee 2001/08/31).\n     *\n     * @param gfp\n     *            global flags\n     * @param musicLength\n     *            music length\n     * @param streamBuffer\n     *            pointer to output buffer\n     * @param streamBufferPos\n     *            offset into the output buffer\n     * @param crc\n     *            computation of CRC-16 of Lame Tag so far (starting at frame\n     *            sync)\n     * @return number of bytes written to the stream\n     */\n    function putLameVBR(gfp, musicLength, streamBuffer, streamBufferPos, crc) {\n        var gfc = gfp.internal_flags;\n        var bytesWritten = 0;\n\n        /* encoder delay */\n        var encDelay = gfp.encoder_delay;\n        /* encoder padding */\n        var encPadding = gfp.encoder_padding;\n\n        /* recall: gfp.VBR_q is for example set by the switch -V */\n        /* gfp.quality by -q, -h, -f, etc */\n        var quality = (100 - 10 * gfp.VBR_q - gfp.quality);\n\n        var version = v.getLameVeryShortVersion();\n        var vbr;\n        var revision = 0x00;\n        var revMethod;\n        // numbering different in vbr_mode vs. Lame tag\n        var vbrTypeTranslator = [1, 5, 3, 2, 4, 0, 3];\n        var lowpass = 0 | (((gfp.lowpassfreq / 100.0) + .5) > 255 ? 255\n                : (gfp.lowpassfreq / 100.0) + .5);\n        var peakSignalAmplitude = 0;\n        var radioReplayGain = 0;\n        var audiophileReplayGain = 0;\n        var noiseShaping = gfp.internal_flags.noise_shaping;\n        var stereoMode = 0;\n        var nonOptimal = 0;\n        var sourceFreq = 0;\n        var misc = 0;\n        var musicCRC = 0;\n\n        // psy model type: Gpsycho or NsPsytune\n        var expNPsyTune = (gfp.exp_nspsytune & 1) != 0;\n        var safeJoint = (gfp.exp_nspsytune & 2) != 0;\n        var noGapMore = false;\n        var noGapPrevious = false;\n        var noGapCount = gfp.internal_flags.nogap_total;\n        var noGapCurr = gfp.internal_flags.nogap_current;\n\n        // 4 bits\n        var athType = gfp.ATHtype;\n        var flags = 0;\n\n        // vbr modes\n        var abrBitrate;\n        switch (gfp.VBR) {\n            case vbr_abr:\n                abrBitrate = gfp.VBR_mean_bitrate_kbps;\n                break;\n            case vbr_off:\n                abrBitrate = gfp.brate;\n                break;\n            default:\n                abrBitrate = gfp.VBR_min_bitrate_kbps;\n        }\n\n        // revision and vbr method\n        if (gfp.VBR.ordinal() < vbrTypeTranslator.length)\n            vbr = vbrTypeTranslator[gfp.VBR.ordinal()];\n        else\n            vbr = 0x00; // unknown\n\n        revMethod = 0x10 * revision + vbr;\n\n        // ReplayGain\n        if (gfc.findReplayGain) {\n            if (gfc.RadioGain > 0x1FE)\n                gfc.RadioGain = 0x1FE;\n            if (gfc.RadioGain < -0x1FE)\n                gfc.RadioGain = -0x1FE;\n\n            // set name code\n            radioReplayGain = 0x2000;\n            // set originator code to `determined automatically'\n            radioReplayGain |= 0xC00;\n\n            if (gfc.RadioGain >= 0) {\n                // set gain adjustment\n                radioReplayGain |= gfc.RadioGain;\n            } else {\n                // set the sign bit\n                radioReplayGain |= 0x200;\n                // set gain adjustment\n                radioReplayGain |= -gfc.RadioGain;\n            }\n        }\n\n        // peak sample\n        if (gfc.findPeakSample)\n            peakSignalAmplitude = Math\n                .abs(0 | ((( gfc.PeakSample) / 32767.0) * Math.pow(2, 23) + .5));\n\n        // nogap\n        if (noGapCount != -1) {\n            if (noGapCurr > 0)\n                noGapPrevious = true;\n\n            if (noGapCurr < noGapCount - 1)\n                noGapMore = true;\n        }\n\n        // flags\n        flags = athType + ((expNPsyTune ? 1 : 0) << 4)\n            + ((safeJoint ? 1 : 0) << 5) + ((noGapMore ? 1 : 0) << 6)\n            + ((noGapPrevious ? 1 : 0) << 7);\n\n        if (quality < 0)\n            quality = 0;\n\n        // stereo mode field (Intensity stereo is not implemented)\n        switch (gfp.mode) {\n            case MONO:\n                stereoMode = 0;\n                break;\n            case STEREO:\n                stereoMode = 1;\n                break;\n            case DUAL_CHANNEL:\n                stereoMode = 2;\n                break;\n            case JOINT_STEREO:\n                if (gfp.force_ms)\n                    stereoMode = 4;\n                else\n                    stereoMode = 3;\n                break;\n            case NOT_SET:\n            //$FALL-THROUGH$\n            default:\n                stereoMode = 7;\n                break;\n        }\n\n        if (gfp.in_samplerate <= 32000)\n            sourceFreq = 0x00;\n        else if (gfp.in_samplerate == 48000)\n            sourceFreq = 0x02;\n        else if (gfp.in_samplerate > 48000)\n            sourceFreq = 0x03;\n        else {\n            // default is 44100Hz\n            sourceFreq = 0x01;\n        }\n\n        // Check if the user overrided the default LAME behavior with some\n        // nasty options\n        if (gfp.short_blocks == ShortBlock.short_block_forced\n            || gfp.short_blocks == ShortBlock.short_block_dispensed\n            || ((gfp.lowpassfreq == -1) && (gfp.highpassfreq == -1)) || /* \"-k\" */\n            (gfp.scale_left < gfp.scale_right)\n            || (gfp.scale_left > gfp.scale_right)\n            || (gfp.disable_reservoir && gfp.brate < 320) || gfp.noATH\n            || gfp.ATHonly || (athType == 0) || gfp.in_samplerate <= 32000)\n            nonOptimal = 1;\n\n        misc = noiseShaping + (stereoMode << 2) + (nonOptimal << 5)\n            + (sourceFreq << 6);\n\n        musicCRC = gfc.nMusicCRC;\n\n        // Write all this information into the stream\n\n        createInteger(streamBuffer, streamBufferPos + bytesWritten, quality);\n        bytesWritten += 4;\n\n        for (var j = 0; j < 9; j++) {\n            streamBuffer[streamBufferPos + bytesWritten + j] = 0xff & version .charAt(j);\n        }\n        bytesWritten += 9;\n\n        streamBuffer[streamBufferPos + bytesWritten] = 0xff & revMethod;\n        bytesWritten++;\n\n        streamBuffer[streamBufferPos + bytesWritten] = 0xff & lowpass;\n        bytesWritten++;\n\n        createInteger(streamBuffer, streamBufferPos + bytesWritten,\n            peakSignalAmplitude);\n        bytesWritten += 4;\n\n        createShort(streamBuffer, streamBufferPos + bytesWritten,\n            radioReplayGain);\n        bytesWritten += 2;\n\n        createShort(streamBuffer, streamBufferPos + bytesWritten,\n            audiophileReplayGain);\n        bytesWritten += 2;\n\n        streamBuffer[streamBufferPos + bytesWritten] = 0xff & flags;\n        bytesWritten++;\n\n        if (abrBitrate >= 255)\n            streamBuffer[streamBufferPos + bytesWritten] = 0xFF;\n        else\n            streamBuffer[streamBufferPos + bytesWritten] = 0xff & abrBitrate;\n        bytesWritten++;\n\n        streamBuffer[streamBufferPos + bytesWritten] = 0xff & (encDelay >> 4);\n        streamBuffer[streamBufferPos + bytesWritten + 1] = 0xff & ((encDelay << 4) + (encPadding >> 8));\n        streamBuffer[streamBufferPos + bytesWritten + 2] = 0xff & encPadding;\n\n        bytesWritten += 3;\n\n        streamBuffer[streamBufferPos + bytesWritten] = 0xff & misc;\n        bytesWritten++;\n\n        // unused in rev0\n        streamBuffer[streamBufferPos + bytesWritten++] = 0;\n\n        createShort(streamBuffer, streamBufferPos + bytesWritten, gfp.preset);\n        bytesWritten += 2;\n\n        createInteger(streamBuffer, streamBufferPos + bytesWritten, musicLength);\n        bytesWritten += 4;\n\n        createShort(streamBuffer, streamBufferPos + bytesWritten, musicCRC);\n        bytesWritten += 2;\n\n        // Calculate tag CRC.... must be done here, since it includes previous\n        // information\n\n        for (var i = 0; i < bytesWritten; i++)\n            crc = crcUpdateLookup(streamBuffer[streamBufferPos + i], crc);\n\n        createShort(streamBuffer, streamBufferPos + bytesWritten, crc);\n        bytesWritten += 2;\n\n        return bytesWritten;\n    }\n\n    function skipId3v2(fpStream) {\n        // seek to the beginning of the stream\n        fpStream.seek(0);\n        // read 10 bytes in case there's an ID3 version 2 header here\n        var id3v2Header = new_byte(10);\n        fpStream.readFully(id3v2Header);\n        /* does the stream begin with the ID3 version 2 file identifier? */\n        var id3v2TagSize;\n        if (!new String(id3v2Header, \"ISO-8859-1\").startsWith(\"ID3\")) {\n            /*\n             * the tag size (minus the 10-byte header) is encoded into four\n             * bytes where the most significant bit is clear in each byte\n             */\n            id3v2TagSize = (((id3v2Header[6] & 0x7f) << 21)\n                | ((id3v2Header[7] & 0x7f) << 14)\n                | ((id3v2Header[8] & 0x7f) << 7) | (id3v2Header[9] & 0x7f))\n                + id3v2Header.length;\n        } else {\n            /* no ID3 version 2 tag in this stream */\n            id3v2TagSize = 0;\n        }\n        return id3v2TagSize;\n    }\n\n    this.getLameTagFrame = function (gfp, buffer) {\n        var gfc = gfp.internal_flags;\n\n        if (!gfp.bWriteVbrTag) {\n            return 0;\n        }\n        if (gfc.Class_ID != Lame.LAME_ID) {\n            return 0;\n        }\n        if (gfc.VBR_seek_table.pos <= 0) {\n            return 0;\n        }\n        if (buffer.length < gfc.VBR_seek_table.TotalFrameSize) {\n            return gfc.VBR_seek_table.TotalFrameSize;\n        }\n\n        Arrays.fill(buffer, 0, gfc.VBR_seek_table.TotalFrameSize, 0);\n\n        // 4 bytes frame header\n        setLameTagFrameHeader(gfp, buffer);\n\n        // Create TOC entries\n        var toc = new_byte(NUMTOCENTRIES);\n\n        if (gfp.free_format) {\n            for (var i = 1; i < NUMTOCENTRIES; ++i)\n                toc[i] = 0xff & (255 * i / 100);\n        } else {\n            xingSeekTable(gfc.VBR_seek_table, toc);\n        }\n\n        // Start writing the tag after the zero frame\n        var streamIndex = gfc.sideinfo_len;\n        /**\n         * Note: Xing header specifies that Xing data goes in the ancillary data\n         * with NO ERROR PROTECTION. If error protecton in enabled, the Xing\n         * data still starts at the same offset, and now it is in sideinfo data\n         * block, and thus will not decode correctly by non-Xing tag aware\n         * players\n         */\n        if (gfp.error_protection)\n            streamIndex -= 2;\n\n        // Put Vbr tag\n        if (gfp.VBR == VbrMode.vbr_off) {\n            buffer[streamIndex++] = 0xff & VBRTag1.charAt(0);\n            buffer[streamIndex++] = 0xff & VBRTag1.charAt(1);\n            buffer[streamIndex++] = 0xff & VBRTag1.charAt(2);\n            buffer[streamIndex++] = 0xff & VBRTag1.charAt(3);\n\n        } else {\n            buffer[streamIndex++] = 0xff & VBRTag0.charAt(0);\n            buffer[streamIndex++] = 0xff & VBRTag0.charAt(1);\n            buffer[streamIndex++] = 0xff & VBRTag0.charAt(2);\n            buffer[streamIndex++] = 0xff & VBRTag0.charAt(3);\n        }\n\n        // Put header flags\n        createInteger(buffer, streamIndex, FRAMES_FLAG + BYTES_FLAG + TOC_FLAG\n            + VBR_SCALE_FLAG);\n        streamIndex += 4;\n\n        // Put Total Number of frames\n        createInteger(buffer, streamIndex, gfc.VBR_seek_table.nVbrNumFrames);\n        streamIndex += 4;\n\n        // Put total audio stream size, including Xing/LAME Header\n        var streamSize = (gfc.VBR_seek_table.nBytesWritten + gfc.VBR_seek_table.TotalFrameSize);\n        createInteger(buffer, streamIndex, 0 | streamSize);\n        streamIndex += 4;\n\n        /* Put TOC */\n        System.arraycopy(toc, 0, buffer, streamIndex, toc.length);\n        streamIndex += toc.length;\n\n        if (gfp.error_protection) {\n            // (jo) error_protection: add crc16 information to header\n            bs.CRC_writeheader(gfc, buffer);\n        }\n\n        // work out CRC so far: initially crc = 0\n        var crc = 0x00;\n        for (var i = 0; i < streamIndex; i++)\n            crc = crcUpdateLookup(buffer[i], crc);\n        // Put LAME VBR info\n        streamIndex += putLameVBR(gfp, streamSize, buffer, streamIndex, crc);\n\n        return gfc.VBR_seek_table.TotalFrameSize;\n    }\n\n    /**\n     * Write final VBR tag to the file.\n     *\n     * @param gfp\n     *            global flags\n     * @param stream\n     *            stream to add the VBR tag to\n     * @return 0 (OK), -1 else\n     * @throws IOException\n     *             I/O error\n     */\n    this.putVbrTag = function (gfp, stream) {\n        var gfc = gfp.internal_flags;\n\n        if (gfc.VBR_seek_table.pos <= 0)\n            return -1;\n\n        // Seek to end of file\n        stream.seek(stream.length());\n\n        // Get file size, abort if file has zero length.\n        if (stream.length() == 0)\n            return -1;\n\n        // The VBR tag may NOT be located at the beginning of the stream. 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y + h, r);\n ctx.arcTo(x, y + h, x, y, r);\n ctx.arcTo(x, y, x + w, y, r);\n };\n\n jcanvas.text_multiline = function (ctx, text, x, y, w, h, lineheight) {\n var line = '';\n var text_len = text.length;\n var chars = text.split('');\n var test_line = null;\n ctx.textAlign = 'left';\n ctx.textBaseline = 'top';\n for (var i = 0; i < text_len; i++) {\n test_line = line + chars[i];\n if (ctx.measureText(test_line).width > w && i > 0) {\n ctx.fillText(line, x, y);\n line = chars[i];\n y += lineheight;\n } else {\n line = test_line;\n }\n }\n ctx.fillText(line, x, y);\n };\n\n jcanvas.text_ellipsis = function (ctx, text, x, y, w, h) {\n var center_y = y + h / 2;\n var text = jcanvas.fittingString(ctx, text, w);\n ctx.textAlign = 'left';\n ctx.textBaseline = 'middle';\n ctx.fillText(text, x, center_y, w);\n };\n\n jcanvas.fittingString = function (ctx, text, max_width) {\n var width = ctx.measureText(text).width;\n var ellipsis = '…';\n var ellipsis_width = ctx.measureText(ellipsis).width;\n if (width <= max_width || width <= ellipsis_width) {\n return text;\n } else {\n var len = text.length;\n while (width >= max_width - ellipsis_width && len-- > 0) {\n text = text.substring(0, len);\n width = ctx.measureText(text).width;\n }\n return text + ellipsis;\n }\n };\n\n jcanvas.image = function (ctx, url, x, y, w, h, r, rotation, callback) {\n var img = new Image();\n img.onload = function () {\n ctx.save();\n ctx.translate(x, y);\n ctx.save();\n ctx.beginPath();\n jcanvas.rect(ctx, 0, 0, w, h, r);\n ctx.closePath();\n ctx.clip();\n ctx.translate(w / 2, h / 2);\n ctx.rotate(rotation * Math.PI / 180);\n ctx.drawImage(img, -w / 2, -h / 2);\n ctx.restore();\n ctx.restore();\n !!callback && callback();\n }\n img.src = url;\n };\n\n jsMind.screenshot = function (jm) {\n this.jm = jm;\n this.canvas_elem = null;\n this.canvas_ctx = null;\n this._inited = false;\n };\n\n jsMind.screenshot.prototype = {\n init: function () {\n if (this._inited) { return; }\n console.log('init');\n var c = $c('canvas');\n var ctx = c.getContext('2d');\n\n this.canvas_elem = c;\n this.canvas_ctx = ctx;\n this.jm.view.e_panel.appendChild(c);\n this._inited = true;\n this.resize();\n },\n\n shoot: function (callback) {\n this.init();\n this._draw(function () {\n !!callback && callback();\n this.clean();\n }.bind(this));\n this._watermark();\n },\n\n shootDownload: function () {\n this.shoot(function () {\n this._download();\n }.bind(this));\n },\n\n shootAsDataURL: function (callback) {\n this.shoot(function () {\n !!callback && callback(this.canvas_elem.toDataURL());\n }.bind(this));\n },\n\n resize: function () {\n if (this._inited) {\n this.canvas_elem.width = this.jm.view.size.w;\n this.canvas_elem.height = this.jm.view.size.h;\n }\n },\n\n clean: function () {\n var c = this.canvas_elem;\n this.canvas_ctx.clearRect(0, 0, c.width, c.height);\n },\n\n _draw: function (callback) {\n var ctx = this.canvas_ctx;\n ctx.textAlign = 'left';\n ctx.textBaseline = 'top';\n this._draw_lines(function () {\n this._draw_nodes(callback);\n }.bind(this));\n },\n\n _watermark: function () {\n var c = this.canvas_elem;\n var ctx = this.canvas_ctx;\n ctx.textAlign = 'right';\n ctx.textBaseline = 'bottom';\n ctx.fillStyle = '#000';\n ctx.font = '11px Verdana,Arial,Helvetica,sans-serif';\n ctx.fillText('hizzgdev.github.io/jsmind', c.width - 5.5, c.height - 2.5);\n ctx.textAlign = 'left';\n ctx.fillText($w.location, 5.5, c.height - 2.5);\n },\n\n _draw_lines: function (callback) {\n this.jm.view.graph.copy_to(this.canvas_ctx, callback);\n },\n\n _draw_nodes: function (callback) {\n var nodes = this.jm.mind.nodes;\n var node;\n for (var nodeid in nodes) {\n node = nodes[nodeid];\n this._draw_node(node);\n }\n\n function check_nodes_ready() {\n console.log('check_node_ready' + new Date());\n var allOk = true;\n for (var nodeid in nodes) {\n node = nodes[nodeid];\n allOk = allOk & node.ready;\n }\n\n if (!allOk) {\n $w.setTimeout(check_nodes_ready, 200);\n } else {\n $w.setTimeout(callback, 200);\n }\n }\n check_nodes_ready();\n },\n\n _draw_node: function (node) {\n var ctx = this.canvas_ctx;\n var view_data = node._data.view;\n var node_element = view_data.element;\n var ncs = getComputedStyle(node_element);\n if (!is_visible(ncs)) {\n node.ready = true;\n return;\n }\n\n var bgcolor = css(ncs, 'background-color');\n var round_radius = parseInt(css(ncs, 'border-top-left-radius'));\n var color = css(ncs, 'color');\n var padding_left = parseInt(css(ncs, 'padding-left'));\n var padding_right = parseInt(css(ncs, 'padding-right'));\n var padding_top = parseInt(css(ncs, 'padding-top'));\n var padding_bottom = parseInt(css(ncs, 'padding-bottom'));\n var text_overflow = css(ncs, 'text-overflow');\n var font = css(ncs, 'font-style') + ' ' +\n css(ncs, 'font-variant') + ' ' +\n css(ncs, 'font-weight') + ' ' +\n css(ncs, 'font-size') + '/' + css(ncs, 'line-height') + ' ' +\n css(ncs, 'font-family');\n\n var rb = {\n x: view_data.abs_x,\n y: view_data.abs_y,\n w: view_data.width + 1,\n h: view_data.height + 1\n };\n var tb = {\n x: rb.x + padding_left,\n y: rb.y + padding_top,\n w: rb.w - padding_left - padding_right,\n h: rb.h - padding_top - padding_bottom\n };\n\n ctx.font = font;\n ctx.fillStyle = bgcolor;\n ctx.beginPath();\n jcanvas.rect(ctx, rb.x, rb.y, rb.w, rb.h, round_radius);\n ctx.closePath();\n ctx.fill();\n\n ctx.fillStyle = color;\n if ('background-image' in node.data) {\n var backgroundUrl = css(ncs, 'background-image').slice(5, -2);\n node.ready = false;\n var rotation = 0;\n if ('background-rotation' in node.data) {\n rotation = node.data['background-rotation'];\n }\n jcanvas.image(ctx, backgroundUrl, rb.x, rb.y, rb.w, rb.h, round_radius, rotation,\n function () {\n node.ready = true;\n });\n }\n if (!!node.topic) {\n if (text_overflow === 'ellipsis') {\n jcanvas.text_ellipsis(ctx, node.topic, tb.x, tb.y, tb.w, tb.h);\n } else {\n var line_height = parseInt(css(ncs, 'line-height'));\n jcanvas.text_multiline(ctx, node.topic, tb.x, tb.y, tb.w, tb.h, line_height);\n }\n }\n if (!!view_data.expander) {\n this._draw_expander(view_data.expander);\n }\n if (!('background-image' in node.data)) {\n node.ready = true;\n }\n },\n\n _draw_expander: function (expander) {\n var ctx = this.canvas_ctx;\n var ncs = getComputedStyle(expander);\n if (!is_visible(ncs)) { return; }\n\n var style_left = css(ncs, 'left');\n var style_top = css(ncs, 'top');\n var font = css(ncs, 'font');\n var left = parseInt(style_left);\n var top = parseInt(style_top);\n var is_plus = expander.innerHTML === '+';\n\n ctx.lineWidth = 1;\n\n ctx.beginPath();\n ctx.arc(left + 7, top + 7, 5, 0, Math.PI * 2, true);\n ctx.moveTo(left + 10, top + 7);\n ctx.lineTo(left + 4, top + 7);\n if (is_plus) {\n ctx.moveTo(left + 7, top + 4);\n ctx.lineTo(left + 7, top + 10);\n }\n ctx.closePath();\n ctx.stroke();\n },\n\n _download: function () {\n var c = this.canvas_elem;\n var name = this.jm.mind.name + '.png';\n\n if (navigator.msSaveBlob && (!!c.msToBlob)) {\n var blob = c.msToBlob();\n navigator.msSaveBlob(blob, name);\n } else {\n var bloburl = this.canvas_elem.toDataURL();\n var anchor = $c('a');\n if ('download' in anchor) {\n anchor.style.visibility = 'hidden';\n anchor.href = bloburl;\n anchor.download = name;\n $d.body.appendChild(anchor);\n var evt = $d.createEvent('MouseEvents');\n evt.initEvent('click', true, true);\n anchor.dispatchEvent(evt);\n $d.body.removeChild(anchor);\n } else {\n location.href = bloburl;\n }\n }\n },\n\n jm_event_handle: function (type, data) {\n if (type === jsMind.event_type.resize) {\n this.resize();\n }\n }\n };\n\n var screenshot_plugin = new jsMind.plugin('screenshot', function (jm) {\n var jss = new jsMind.screenshot(jm);\n jm.screenshot = jss;\n jm.shoot = function () {\n jss.shoot();\n };\n jm.add_event_listener(function (type, data) {\n jss.jm_event_handle.call(jss, type, data);\n });\n });\n\n jsMind.register_plugin(screenshot_plugin);\n\n})(window);\n//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"3a40.js","sources":["webpack:///./node_modules/jsmind/js/jsmind.screenshot.js?ddae"],"sourcesContent":["/*\n * Released under BSD License\n * Copyright (c) 2014-2021 hizzgdev@163.com\n * \n * Project Home:\n *   https://github.com/hizzgdev/jsmind/\n */\n\n(function ($w) {\n    'use strict';\n\n    var __name__ = 'jsMind';\n    var jsMind = $w[__name__];\n    if (!jsMind) { return; }\n    if (typeof jsMind.screenshot != 'undefined') { return; }\n\n    var $d = $w.document;\n    var $c = function (tag) { return $d.createElement(tag); };\n\n    var css = function (cstyle, property_name) {\n        return cstyle.getPropertyValue(property_name);\n    };\n    var is_visible = function (cstyle) {\n        var visibility = css(cstyle, 'visibility');\n        var display = css(cstyle, 'display');\n        return (visibility !== 'hidden' && display !== 'none');\n    };\n    var jcanvas = {};\n    jcanvas.rect = function (ctx, x, y, w, h, r) {\n        if (w < 2 * r) r = w / 2;\n        if (h < 2 * r) r = h / 2;\n        ctx.moveTo(x + r, y);\n        ctx.arcTo(x + w, y, x + w, y + h, r);\n        ctx.arcTo(x + w, y + h, x, y + h, r);\n        ctx.arcTo(x, y + h, x, y, r);\n        ctx.arcTo(x, y, x + w, y, r);\n    };\n\n    jcanvas.text_multiline = function (ctx, text, x, y, w, h, lineheight) {\n        var line = '';\n        var text_len = text.length;\n        var chars = text.split('');\n        var test_line = null;\n        ctx.textAlign = 'left';\n        ctx.textBaseline = 'top';\n        for (var i = 0; i < text_len; i++) {\n            test_line = line + chars[i];\n            if (ctx.measureText(test_line).width > w && i > 0) {\n                ctx.fillText(line, x, y);\n                line = chars[i];\n                y += lineheight;\n            } else {\n                line = test_line;\n            }\n        }\n        ctx.fillText(line, x, y);\n    };\n\n    jcanvas.text_ellipsis = function (ctx, text, x, y, w, h) {\n        var center_y = y + h / 2;\n        var text = jcanvas.fittingString(ctx, text, w);\n        ctx.textAlign = 'left';\n        ctx.textBaseline = 'middle';\n        ctx.fillText(text, x, center_y, w);\n    };\n\n    jcanvas.fittingString = function (ctx, text, max_width) {\n        var width = ctx.measureText(text).width;\n        var ellipsis = '…';\n        var ellipsis_width = ctx.measureText(ellipsis).width;\n        if (width <= max_width || width <= ellipsis_width) {\n            return text;\n        } else {\n            var len = text.length;\n            while (width >= max_width - ellipsis_width && len-- > 0) {\n                text = text.substring(0, len);\n                width = ctx.measureText(text).width;\n            }\n            return text + ellipsis;\n        }\n    };\n\n    jcanvas.image = function (ctx, url, x, y, w, h, r, rotation, callback) {\n        var img = new Image();\n        img.onload = function () {\n            ctx.save();\n            ctx.translate(x, y);\n            ctx.save();\n            ctx.beginPath();\n            jcanvas.rect(ctx, 0, 0, w, h, r);\n            ctx.closePath();\n            ctx.clip();\n            ctx.translate(w / 2, h / 2);\n            ctx.rotate(rotation * Math.PI / 180);\n            ctx.drawImage(img, -w / 2, -h / 2);\n            ctx.restore();\n            ctx.restore();\n            !!callback && callback();\n        }\n        img.src = url;\n    };\n\n    jsMind.screenshot = function (jm) {\n        this.jm = jm;\n        this.canvas_elem = null;\n        this.canvas_ctx = null;\n        this._inited = false;\n    };\n\n    jsMind.screenshot.prototype = {\n        init: function () {\n            if (this._inited) { return; }\n            console.log('init');\n            var c = $c('canvas');\n            var ctx = c.getContext('2d');\n\n            this.canvas_elem = c;\n            this.canvas_ctx = ctx;\n            this.jm.view.e_panel.appendChild(c);\n            this._inited = true;\n            this.resize();\n        },\n\n        shoot: function (callback) {\n            this.init();\n            this._draw(function () {\n                !!callback && callback();\n                this.clean();\n            }.bind(this));\n            this._watermark();\n        },\n\n        shootDownload: function () {\n            this.shoot(function () {\n                this._download();\n            }.bind(this));\n        },\n\n        shootAsDataURL: function (callback) {\n            this.shoot(function () {\n                !!callback && callback(this.canvas_elem.toDataURL());\n            }.bind(this));\n        },\n\n        resize: function () {\n            if (this._inited) {\n                this.canvas_elem.width = this.jm.view.size.w;\n                this.canvas_elem.height = this.jm.view.size.h;\n            }\n        },\n\n        clean: function () {\n            var c = this.canvas_elem;\n            this.canvas_ctx.clearRect(0, 0, c.width, c.height);\n        },\n\n        _draw: function (callback) {\n            var ctx = this.canvas_ctx;\n            ctx.textAlign = 'left';\n            ctx.textBaseline = 'top';\n            this._draw_lines(function () {\n                this._draw_nodes(callback);\n            }.bind(this));\n        },\n\n        _watermark: function () {\n            var c = this.canvas_elem;\n            var ctx = this.canvas_ctx;\n            ctx.textAlign = 'right';\n            ctx.textBaseline = 'bottom';\n            ctx.fillStyle = '#000';\n            ctx.font = '11px Verdana,Arial,Helvetica,sans-serif';\n            ctx.fillText('hizzgdev.github.io/jsmind', c.width - 5.5, c.height - 2.5);\n            ctx.textAlign = 'left';\n            ctx.fillText($w.location, 5.5, c.height - 2.5);\n        },\n\n        _draw_lines: function (callback) {\n            this.jm.view.graph.copy_to(this.canvas_ctx, callback);\n        },\n\n        _draw_nodes: function (callback) {\n            var nodes = this.jm.mind.nodes;\n            var node;\n            for (var nodeid in nodes) {\n                node = nodes[nodeid];\n                this._draw_node(node);\n            }\n\n            function check_nodes_ready() {\n                console.log('check_node_ready' + new Date());\n                var allOk = true;\n                for (var nodeid in nodes) {\n                    node = nodes[nodeid];\n                    allOk = allOk & node.ready;\n                }\n\n                if (!allOk) {\n                    $w.setTimeout(check_nodes_ready, 200);\n                } else {\n                    $w.setTimeout(callback, 200);\n                }\n            }\n            check_nodes_ready();\n        },\n\n        _draw_node: function (node) {\n            var ctx = this.canvas_ctx;\n            var view_data = node._data.view;\n            var node_element = view_data.element;\n            var ncs = getComputedStyle(node_element);\n            if (!is_visible(ncs)) {\n                node.ready = true;\n                return;\n            }\n\n            var bgcolor = css(ncs, 'background-color');\n            var round_radius = parseInt(css(ncs, 'border-top-left-radius'));\n            var color = css(ncs, 'color');\n            var padding_left = parseInt(css(ncs, 'padding-left'));\n            var padding_right = parseInt(css(ncs, 'padding-right'));\n            var padding_top = parseInt(css(ncs, 'padding-top'));\n            var padding_bottom = parseInt(css(ncs, 'padding-bottom'));\n            var text_overflow = css(ncs, 'text-overflow');\n            var font = css(ncs, 'font-style') + ' ' +\n                css(ncs, 'font-variant') + ' ' +\n                css(ncs, 'font-weight') + ' ' +\n                css(ncs, 'font-size') + '/' + css(ncs, 'line-height') + ' ' +\n                css(ncs, 'font-family');\n\n            var rb = {\n                x: view_data.abs_x,\n                y: view_data.abs_y,\n                w: view_data.width + 1,\n                h: view_data.height + 1\n            };\n            var tb = {\n                x: rb.x + padding_left,\n                y: rb.y + padding_top,\n                w: rb.w - padding_left - padding_right,\n                h: rb.h - padding_top - padding_bottom\n            };\n\n            ctx.font = font;\n            ctx.fillStyle = bgcolor;\n            ctx.beginPath();\n            jcanvas.rect(ctx, rb.x, rb.y, rb.w, rb.h, round_radius);\n            ctx.closePath();\n            ctx.fill();\n\n            ctx.fillStyle = color;\n            if ('background-image' in node.data) {\n                var backgroundUrl = css(ncs, 'background-image').slice(5, -2);\n                node.ready = false;\n                var rotation = 0;\n                if ('background-rotation' in node.data) {\n                    rotation = node.data['background-rotation'];\n                }\n                jcanvas.image(ctx, backgroundUrl, rb.x, rb.y, rb.w, rb.h, round_radius, rotation,\n                    function () {\n                        node.ready = true;\n                    });\n            }\n            if (!!node.topic) {\n                if (text_overflow === 'ellipsis') {\n                    jcanvas.text_ellipsis(ctx, node.topic, tb.x, tb.y, tb.w, tb.h);\n                } else {\n                    var line_height = parseInt(css(ncs, 'line-height'));\n                    jcanvas.text_multiline(ctx, node.topic, tb.x, tb.y, tb.w, tb.h, line_height);\n                }\n            }\n            if (!!view_data.expander) {\n                this._draw_expander(view_data.expander);\n            }\n            if (!('background-image' in node.data)) {\n                node.ready = true;\n            }\n        },\n\n        _draw_expander: function (expander) {\n            var ctx = this.canvas_ctx;\n            var ncs = getComputedStyle(expander);\n            if (!is_visible(ncs)) { return; }\n\n            var style_left = css(ncs, 'left');\n            var style_top = css(ncs, 'top');\n            var font = css(ncs, 'font');\n            var left = parseInt(style_left);\n            var top = parseInt(style_top);\n            var is_plus = expander.innerHTML === '+';\n\n            ctx.lineWidth = 1;\n\n            ctx.beginPath();\n            ctx.arc(left + 7, top + 7, 5, 0, Math.PI * 2, true);\n            ctx.moveTo(left + 10, top + 7);\n            ctx.lineTo(left + 4, top + 7);\n            if (is_plus) {\n                ctx.moveTo(left + 7, top + 4);\n                ctx.lineTo(left + 7, top + 10);\n            }\n            ctx.closePath();\n            ctx.stroke();\n        },\n\n        _download: function () {\n            var c = this.canvas_elem;\n            var name = this.jm.mind.name + '.png';\n\n            if (navigator.msSaveBlob && (!!c.msToBlob)) {\n                var blob = c.msToBlob();\n                navigator.msSaveBlob(blob, name);\n            } else {\n                var bloburl = this.canvas_elem.toDataURL();\n                var anchor = $c('a');\n                if ('download' in anchor) {\n                    anchor.style.visibility = 'hidden';\n                    anchor.href = bloburl;\n                    anchor.download = name;\n                    $d.body.appendChild(anchor);\n                    var evt = $d.createEvent('MouseEvents');\n                    evt.initEvent('click', true, true);\n                    anchor.dispatchEvent(evt);\n                    $d.body.removeChild(anchor);\n                } else {\n                    location.href = bloburl;\n                }\n            }\n        },\n\n        jm_event_handle: function (type, data) {\n            if (type === jsMind.event_type.resize) {\n                this.resize();\n            }\n        }\n    };\n\n    var screenshot_plugin = new jsMind.plugin('screenshot', function (jm) {\n        var jss = new jsMind.screenshot(jm);\n        jm.screenshot = jss;\n        jm.shoot = function () {\n            jss.shoot();\n        };\n        jm.add_event_listener(function (type, data) {\n            jss.jm_event_handle.call(jss, type, data);\n        });\n    });\n\n    jsMind.register_plugin(screenshot_plugin);\n\n})(window);\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./node_modules/jsmind/js/jsmind.screenshot.js\n// module id = 3a40\n// module chunks = 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This is platform-dependent and may be overwritten.\n */\n isReservedTag: no,\n\n /**\n * Check if an attribute is reserved so that it cannot be used as a component\n * prop. This is platform-dependent and may be overwritten.\n */\n isReservedAttr: no,\n\n /**\n * Check if a tag is an unknown element.\n * Platform-dependent.\n */\n isUnknownElement: no,\n\n /**\n * Get the namespace of an element\n */\n getTagNamespace: noop,\n\n /**\n * Parse the real tag name for the specific platform.\n */\n parsePlatformTagName: identity,\n\n /**\n * Check if an attribute must be bound using property, e.g. value\n * Platform-dependent.\n */\n mustUseProp: no,\n\n /**\n * Perform updates asynchronously. 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generateComponentTrace(vm) : '';\n\n if (config.warnHandler) {\n config.warnHandler.call(null, msg, vm, trace);\n } else if (hasConsole && (!config.silent)) {\n console.error((\"[Vue warn]: \" + msg + trace));\n }\n };\n\n tip = function (msg, vm) {\n if (hasConsole && (!config.silent)) {\n console.warn(\"[Vue tip]: \" + msg + (\n vm ? generateComponentTrace(vm) : ''\n ));\n }\n };\n\n formatComponentName = function (vm, includeFile) {\n if (vm.$root === vm) {\n return ''\n }\n var options = typeof vm === 'function' && vm.cid != null\n ? vm.options\n : vm._isVue\n ? vm.$options || vm.constructor.options\n : vm;\n var name = options.name || options._componentTag;\n var file = options.__file;\n if (!name && file) {\n var match = file.match(/([^/\\\\]+)\\.vue$/);\n name = match && match[1];\n }\n\n return (\n (name ? (\"<\" + (classify(name)) + \">\") : \"\") +\n (file && includeFile !== false ? (\" at \" + file) : '')\n )\n };\n\n var repeat = function (str, n) {\n var res = '';\n while (n) {\n if (n % 2 === 1) { res += str; }\n if (n > 1) { str += str; }\n n >>= 1;\n }\n return res\n };\n\n generateComponentTrace = function (vm) {\n if (vm._isVue && vm.$parent) {\n var tree = [];\n var currentRecursiveSequence = 0;\n while (vm) {\n if (tree.length > 0) {\n var last = tree[tree.length - 1];\n if (last.constructor === vm.constructor) {\n currentRecursiveSequence++;\n vm = vm.$parent;\n continue\n } else if (currentRecursiveSequence > 0) {\n tree[tree.length - 1] = [last, currentRecursiveSequence];\n currentRecursiveSequence = 0;\n }\n }\n tree.push(vm);\n vm = vm.$parent;\n }\n return '\\n\\nfound in\\n\\n' + tree\n .map(function (vm, i) { return (\"\" + (i === 0 ? '---\x3e ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)\n ? ((formatComponentName(vm[0])) + \"... (\" + (vm[1]) + \" recursive calls)\")\n : formatComponentName(vm))); })\n .join('\\n')\n } else {\n return (\"\\n\\n(found in \" + (formatComponentName(vm)) + \")\")\n }\n };\n}\n\n/* */\n\nvar uid = 0;\n\n/**\n * A dep is an observable that can have multiple\n * directives subscribing to it.\n */\nvar Dep = function Dep () {\n this.id = uid++;\n this.subs = [];\n};\n\nDep.prototype.addSub = function addSub (sub) {\n this.subs.push(sub);\n};\n\nDep.prototype.removeSub = function removeSub (sub) {\n remove(this.subs, sub);\n};\n\nDep.prototype.depend = function depend () {\n if (Dep.target) {\n Dep.target.addDep(this);\n }\n};\n\nDep.prototype.notify = function notify () {\n // stabilize the subscriber list first\n var subs = this.subs.slice();\n if (false) {\n // subs aren't sorted in scheduler if not running async\n // we need to sort them now to make sure they fire in correct\n // order\n subs.sort(function (a, b) { return a.id - b.id; });\n }\n for (var i = 0, l = subs.length; i < l; i++) {\n subs[i].update();\n }\n};\n\n// The current target watcher being evaluated.\n// This is globally unique because only one watcher\n// can be evaluated at a time.\nDep.target = null;\nvar targetStack = [];\n\nfunction pushTarget (target) {\n targetStack.push(target);\n Dep.target = target;\n}\n\nfunction popTarget () {\n targetStack.pop();\n Dep.target = targetStack[targetStack.length - 1];\n}\n\n/* */\n\nvar VNode = function VNode (\n tag,\n data,\n children,\n text,\n elm,\n context,\n componentOptions,\n asyncFactory\n) {\n this.tag = tag;\n this.data = data;\n this.children = children;\n this.text = text;\n this.elm = elm;\n this.ns = undefined;\n this.context = context;\n this.fnContext = undefined;\n this.fnOptions = undefined;\n this.fnScopeId = undefined;\n this.key = data && data.key;\n this.componentOptions = componentOptions;\n this.componentInstance = undefined;\n this.parent = undefined;\n this.raw = false;\n this.isStatic = false;\n this.isRootInsert = true;\n this.isComment = false;\n this.isCloned = false;\n this.isOnce = false;\n this.asyncFactory = asyncFactory;\n this.asyncMeta = undefined;\n this.isAsyncPlaceholder = false;\n};\n\nvar prototypeAccessors = { child: { configurable: true } };\n\n// DEPRECATED: alias for componentInstance for backwards compat.\n/* istanbul ignore next */\nprototypeAccessors.child.get = function () {\n return this.componentInstance\n};\n\nObject.defineProperties( VNode.prototype, prototypeAccessors );\n\nvar createEmptyVNode = function (text) {\n if ( text === void 0 ) text = '';\n\n var node = new VNode();\n node.text = text;\n node.isComment = true;\n return node\n};\n\nfunction createTextVNode (val) {\n return new VNode(undefined, undefined, undefined, String(val))\n}\n\n// optimized shallow clone\n// used for static nodes and slot nodes because they may be reused across\n// multiple renders, cloning them avoids errors when DOM manipulations rely\n// on their elm reference.\nfunction cloneVNode (vnode) {\n var cloned = new VNode(\n vnode.tag,\n vnode.data,\n // #7975\n // clone children array to avoid mutating original in case of cloning\n // a child.\n vnode.children && vnode.children.slice(),\n vnode.text,\n vnode.elm,\n vnode.context,\n vnode.componentOptions,\n vnode.asyncFactory\n );\n cloned.ns = vnode.ns;\n cloned.isStatic = vnode.isStatic;\n cloned.key = vnode.key;\n cloned.isComment = vnode.isComment;\n cloned.fnContext = vnode.fnContext;\n cloned.fnOptions = vnode.fnOptions;\n cloned.fnScopeId = vnode.fnScopeId;\n cloned.asyncMeta = vnode.asyncMeta;\n cloned.isCloned = true;\n return cloned\n}\n\n/*\n * not type checking this file because flow doesn't play well with\n * dynamically accessing methods on Array prototype\n */\n\nvar arrayProto = Array.prototype;\nvar arrayMethods = Object.create(arrayProto);\n\nvar methodsToPatch = [\n 'push',\n 'pop',\n 'shift',\n 'unshift',\n 'splice',\n 'sort',\n 'reverse'\n];\n\n/**\n * Intercept mutating methods and emit events\n */\nmethodsToPatch.forEach(function (method) {\n // cache original method\n var original = arrayProto[method];\n def(arrayMethods, method, function mutator () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n var result = original.apply(this, args);\n var ob = this.__ob__;\n var inserted;\n switch (method) {\n case 'push':\n case 'unshift':\n inserted = args;\n break\n case 'splice':\n inserted = args.slice(2);\n break\n }\n if (inserted) { ob.observeArray(inserted); }\n // notify change\n ob.dep.notify();\n return result\n });\n});\n\n/* */\n\nvar arrayKeys = Object.getOwnPropertyNames(arrayMethods);\n\n/**\n * In some cases we may want to disable observation inside a component's\n * update computation.\n */\nvar shouldObserve = true;\n\nfunction toggleObserving (value) {\n shouldObserve = value;\n}\n\n/**\n * Observer class that is attached to each observed\n * object. Once attached, the observer converts the target\n * object's property keys into getter/setters that\n * collect dependencies and dispatch updates.\n */\nvar Observer = function Observer (value) {\n this.value = value;\n this.dep = new Dep();\n this.vmCount = 0;\n def(value, '__ob__', this);\n if (Array.isArray(value)) {\n if (hasProto) {\n protoAugment(value, arrayMethods);\n } else {\n copyAugment(value, arrayMethods, arrayKeys);\n }\n this.observeArray(value);\n } else {\n this.walk(value);\n }\n};\n\n/**\n * Walk through all properties and convert them into\n * getter/setters. This method should only be called when\n * value type is Object.\n */\nObserver.prototype.walk = function walk (obj) {\n var keys = Object.keys(obj);\n for (var i = 0; i < keys.length; i++) {\n defineReactive$$1(obj, keys[i]);\n }\n};\n\n/**\n * Observe a list of Array items.\n */\nObserver.prototype.observeArray = function observeArray (items) {\n for (var i = 0, l = items.length; i < l; i++) {\n observe(items[i]);\n }\n};\n\n// helpers\n\n/**\n * Augment a target Object or Array by intercepting\n * the prototype chain using __proto__\n */\nfunction protoAugment (target, src) {\n /* eslint-disable no-proto */\n target.__proto__ = src;\n /* eslint-enable no-proto */\n}\n\n/**\n * Augment a target Object or Array by defining\n * hidden properties.\n */\n/* istanbul ignore next */\nfunction copyAugment (target, src, keys) {\n for (var i = 0, l = keys.length; i < l; i++) {\n var key = keys[i];\n def(target, key, src[key]);\n }\n}\n\n/**\n * Attempt to create an observer instance for a value,\n * returns the new observer if successfully observed,\n * or the existing observer if the value already has one.\n */\nfunction observe (value, asRootData) {\n if (!isObject(value) || value instanceof VNode) {\n return\n }\n var ob;\n if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {\n ob = value.__ob__;\n } else if (\n shouldObserve &&\n !isServerRendering() &&\n (Array.isArray(value) || isPlainObject(value)) &&\n Object.isExtensible(value) &&\n !value._isVue\n ) {\n ob = new Observer(value);\n }\n if (asRootData && ob) {\n ob.vmCount++;\n }\n return ob\n}\n\n/**\n * Define a reactive property on an Object.\n */\nfunction defineReactive$$1 (\n obj,\n key,\n val,\n customSetter,\n shallow\n) {\n var dep = new Dep();\n\n var property = Object.getOwnPropertyDescriptor(obj, key);\n if (property && property.configurable === false) {\n return\n }\n\n // cater for pre-defined getter/setters\n var getter = property && property.get;\n var setter = property && property.set;\n if ((!getter || setter) && arguments.length === 2) {\n val = obj[key];\n }\n\n var childOb = !shallow && observe(val);\n Object.defineProperty(obj, key, {\n enumerable: true,\n configurable: true,\n get: function reactiveGetter () {\n var value = getter ? getter.call(obj) : val;\n if (Dep.target) {\n dep.depend();\n if (childOb) {\n childOb.dep.depend();\n if (Array.isArray(value)) {\n dependArray(value);\n }\n }\n }\n return value\n },\n set: function reactiveSetter (newVal) {\n var value = getter ? getter.call(obj) : val;\n /* eslint-disable no-self-compare */\n if (newVal === value || (newVal !== newVal && value !== value)) {\n return\n }\n /* eslint-enable no-self-compare */\n if (false) {\n customSetter();\n }\n // #7981: for accessor properties without setter\n if (getter && !setter) { return }\n if (setter) {\n setter.call(obj, newVal);\n } else {\n val = newVal;\n }\n childOb = !shallow && observe(newVal);\n dep.notify();\n }\n });\n}\n\n/**\n * Set a property on an object. Adds the new property and\n * triggers change notification if the property doesn't\n * already exist.\n */\nfunction set (target, key, val) {\n if (false\n ) {\n warn((\"Cannot set reactive property on undefined, null, or primitive value: \" + ((target))));\n }\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.length = Math.max(target.length, key);\n target.splice(key, 1, val);\n return val\n }\n if (key in target && !(key in Object.prototype)) {\n target[key] = val;\n return val\n }\n var ob = (target).__ob__;\n if (target._isVue || (ob && ob.vmCount)) {\n \"production\" !== 'production' && warn(\n 'Avoid adding reactive properties to a Vue instance or its root $data ' +\n 'at runtime - declare it upfront in the data option.'\n );\n return val\n }\n if (!ob) {\n target[key] = val;\n return val\n }\n defineReactive$$1(ob.value, key, val);\n ob.dep.notify();\n return val\n}\n\n/**\n * Delete a property and trigger change if necessary.\n */\nfunction del (target, key) {\n if (false\n ) {\n warn((\"Cannot delete reactive property on undefined, null, or primitive value: \" + ((target))));\n }\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.splice(key, 1);\n return\n }\n var ob = (target).__ob__;\n if (target._isVue || (ob && ob.vmCount)) {\n \"production\" !== 'production' && warn(\n 'Avoid deleting properties on a Vue instance or its root $data ' +\n '- just set it to null.'\n );\n return\n }\n if (!hasOwn(target, key)) {\n return\n }\n delete target[key];\n if (!ob) {\n return\n }\n ob.dep.notify();\n}\n\n/**\n * Collect dependencies on array elements when the array is touched, since\n * we cannot intercept array element access like property getters.\n */\nfunction dependArray (value) {\n for (var e = (void 0), i = 0, l = value.length; i < l; i++) {\n e = value[i];\n e && e.__ob__ && e.__ob__.dep.depend();\n if (Array.isArray(e)) {\n dependArray(e);\n }\n }\n}\n\n/* */\n\n/**\n * Option overwriting strategies are functions that handle\n * how to merge a parent option value and a child option\n * value into the final value.\n */\nvar strats = config.optionMergeStrategies;\n\n/**\n * Options with restrictions\n */\nif (false) {\n strats.el = strats.propsData = function (parent, child, vm, key) {\n if (!vm) {\n warn(\n \"option \\\"\" + key + \"\\\" can only be used during instance \" +\n 'creation with the `new` keyword.'\n );\n }\n return defaultStrat(parent, child)\n };\n}\n\n/**\n * Helper that recursively merges two data objects together.\n */\nfunction mergeData (to, from) {\n if (!from) { return to }\n var key, toVal, fromVal;\n\n var keys = hasSymbol\n ? Reflect.ownKeys(from)\n : Object.keys(from);\n\n for (var i = 0; i < keys.length; i++) {\n key = keys[i];\n // in case the object is already observed...\n if (key === '__ob__') { continue }\n toVal = to[key];\n fromVal = from[key];\n if (!hasOwn(to, key)) {\n set(to, key, fromVal);\n } else if (\n toVal !== fromVal &&\n isPlainObject(toVal) &&\n isPlainObject(fromVal)\n ) {\n mergeData(toVal, fromVal);\n }\n }\n return to\n}\n\n/**\n * Data\n */\nfunction mergeDataOrFn (\n parentVal,\n childVal,\n vm\n) {\n if (!vm) {\n // in a Vue.extend merge, both should be functions\n if (!childVal) {\n return parentVal\n }\n if (!parentVal) {\n return childVal\n }\n // when parentVal & childVal are both present,\n // we need to return a function that returns the\n // merged result of both functions... no need to\n // check if parentVal is a function here because\n // it has to be a function to pass previous merges.\n return function mergedDataFn () {\n return mergeData(\n typeof childVal === 'function' ? childVal.call(this, this) : childVal,\n typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal\n )\n }\n } else {\n return function mergedInstanceDataFn () {\n // instance merge\n var instanceData = typeof childVal === 'function'\n ? childVal.call(vm, vm)\n : childVal;\n var defaultData = typeof parentVal === 'function'\n ? parentVal.call(vm, vm)\n : parentVal;\n if (instanceData) {\n return mergeData(instanceData, defaultData)\n } else {\n return defaultData\n }\n }\n }\n}\n\nstrats.data = function (\n parentVal,\n childVal,\n vm\n) {\n if (!vm) {\n if (childVal && typeof childVal !== 'function') {\n \"production\" !== 'production' && warn(\n 'The \"data\" option should be a function ' +\n 'that returns a per-instance value in component ' +\n 'definitions.',\n vm\n );\n\n return parentVal\n }\n return mergeDataOrFn(parentVal, childVal)\n }\n\n return mergeDataOrFn(parentVal, childVal, vm)\n};\n\n/**\n * Hooks and props are merged as arrays.\n */\nfunction mergeHook (\n parentVal,\n childVal\n) {\n var res = childVal\n ? parentVal\n ? parentVal.concat(childVal)\n : Array.isArray(childVal)\n ? childVal\n : [childVal]\n : parentVal;\n return res\n ? dedupeHooks(res)\n : res\n}\n\nfunction dedupeHooks (hooks) {\n var res = [];\n for (var i = 0; i < hooks.length; i++) {\n if (res.indexOf(hooks[i]) === -1) {\n res.push(hooks[i]);\n }\n }\n return res\n}\n\nLIFECYCLE_HOOKS.forEach(function (hook) {\n strats[hook] = mergeHook;\n});\n\n/**\n * Assets\n *\n * When a vm is present (instance creation), we need to do\n * a three-way merge between constructor options, instance\n * options and parent options.\n */\nfunction mergeAssets (\n parentVal,\n childVal,\n vm,\n key\n) {\n var res = Object.create(parentVal || null);\n if (childVal) {\n \"production\" !== 'production' && assertObjectType(key, childVal, vm);\n return extend(res, childVal)\n } else {\n return res\n }\n}\n\nASSET_TYPES.forEach(function (type) {\n strats[type + 's'] = mergeAssets;\n});\n\n/**\n * Watchers.\n *\n * Watchers hashes should not overwrite one\n * another, so we merge them as arrays.\n */\nstrats.watch = function (\n parentVal,\n childVal,\n vm,\n key\n) {\n // work around Firefox's Object.prototype.watch...\n if (parentVal === nativeWatch) { parentVal = undefined; }\n if (childVal === nativeWatch) { childVal = undefined; }\n /* istanbul ignore if */\n if (!childVal) { return Object.create(parentVal || null) }\n if (false) {\n assertObjectType(key, childVal, vm);\n }\n if (!parentVal) { return childVal }\n var ret = {};\n extend(ret, parentVal);\n for (var key$1 in childVal) {\n var parent = ret[key$1];\n var child = childVal[key$1];\n if (parent && !Array.isArray(parent)) {\n parent = [parent];\n }\n ret[key$1] = parent\n ? parent.concat(child)\n : Array.isArray(child) ? child : [child];\n }\n return ret\n};\n\n/**\n * Other object hashes.\n */\nstrats.props =\nstrats.methods =\nstrats.inject =\nstrats.computed = function (\n parentVal,\n childVal,\n vm,\n key\n) {\n if (childVal && \"production\" !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n if (!parentVal) { return childVal }\n var ret = Object.create(null);\n extend(ret, parentVal);\n if (childVal) { extend(ret, childVal); }\n return ret\n};\nstrats.provide = mergeDataOrFn;\n\n/**\n * Default strategy.\n */\nvar defaultStrat = function (parentVal, childVal) {\n return childVal === undefined\n ? parentVal\n : childVal\n};\n\n/**\n * Validate component names\n */\nfunction checkComponents (options) {\n for (var key in options.components) {\n validateComponentName(key);\n }\n}\n\nfunction validateComponentName (name) {\n if (!new RegExp((\"^[a-zA-Z][\\\\-\\\\.0-9_\" + (unicodeRegExp.source) + \"]*$\")).test(name)) {\n warn(\n 'Invalid component name: \"' + name + '\". Component names ' +\n 'should conform to valid custom element name in html5 specification.'\n );\n }\n if (isBuiltInTag(name) || config.isReservedTag(name)) {\n warn(\n 'Do not use built-in or reserved HTML elements as component ' +\n 'id: ' + name\n );\n }\n}\n\n/**\n * Ensure all props option syntax are normalized into the\n * Object-based format.\n */\nfunction normalizeProps (options, vm) {\n var props = options.props;\n if (!props) { return }\n var res = {};\n var i, val, name;\n if (Array.isArray(props)) {\n i = props.length;\n while (i--) {\n val = props[i];\n if (typeof val === 'string') {\n name = camelize(val);\n res[name] = { type: null };\n } else if (false) {\n warn('props must be strings when using array syntax.');\n }\n }\n } else if (isPlainObject(props)) {\n for (var key in props) {\n val = props[key];\n name = camelize(key);\n res[name] = isPlainObject(val)\n ? val\n : { type: val };\n }\n } else if (false) {\n warn(\n \"Invalid value for option \\\"props\\\": expected an Array or an Object, \" +\n \"but got \" + (toRawType(props)) + \".\",\n vm\n );\n }\n options.props = res;\n}\n\n/**\n * Normalize all injections into Object-based format\n */\nfunction normalizeInject (options, vm) {\n var inject = options.inject;\n if (!inject) { return }\n var normalized = options.inject = {};\n if (Array.isArray(inject)) {\n for (var i = 0; i < inject.length; i++) {\n normalized[inject[i]] = { from: inject[i] };\n }\n } else if (isPlainObject(inject)) {\n for (var key in inject) {\n var val = inject[key];\n normalized[key] = isPlainObject(val)\n ? extend({ from: key }, val)\n : { from: val };\n }\n } else if (false) {\n warn(\n \"Invalid value for option \\\"inject\\\": expected an Array or an Object, \" +\n \"but got \" + (toRawType(inject)) + \".\",\n vm\n );\n }\n}\n\n/**\n * Normalize raw function directives into object format.\n */\nfunction normalizeDirectives (options) {\n var dirs = options.directives;\n if (dirs) {\n for (var key in dirs) {\n var def$$1 = dirs[key];\n if (typeof def$$1 === 'function') {\n dirs[key] = { bind: def$$1, update: def$$1 };\n }\n }\n }\n}\n\nfunction assertObjectType (name, value, vm) {\n if (!isPlainObject(value)) {\n warn(\n \"Invalid value for option \\\"\" + name + \"\\\": expected an Object, \" +\n \"but got \" + (toRawType(value)) + \".\",\n vm\n );\n }\n}\n\n/**\n * Merge two option objects into a new one.\n * Core utility used in both instantiation and inheritance.\n */\nfunction mergeOptions (\n parent,\n child,\n vm\n) {\n if (false) {\n checkComponents(child);\n }\n\n if (typeof child === 'function') {\n child = child.options;\n }\n\n normalizeProps(child, vm);\n normalizeInject(child, vm);\n normalizeDirectives(child);\n\n // Apply extends and mixins on the child options,\n // but only if it is a raw options object that isn't\n // the result of another mergeOptions call.\n // Only merged options has the _base property.\n if (!child._base) {\n if (child.extends) {\n parent = mergeOptions(parent, child.extends, vm);\n }\n if (child.mixins) {\n for (var i = 0, l = child.mixins.length; i < l; i++) {\n parent = mergeOptions(parent, child.mixins[i], vm);\n }\n }\n }\n\n var options = {};\n var key;\n for (key in parent) {\n mergeField(key);\n }\n for (key in child) {\n if (!hasOwn(parent, key)) {\n mergeField(key);\n }\n }\n function mergeField (key) {\n var strat = strats[key] || defaultStrat;\n options[key] = strat(parent[key], child[key], vm, key);\n }\n return options\n}\n\n/**\n * Resolve an asset.\n * This function is used because child instances need access\n * to assets defined in its ancestor chain.\n */\nfunction resolveAsset (\n options,\n type,\n id,\n warnMissing\n) {\n /* istanbul ignore if */\n if (typeof id !== 'string') {\n return\n }\n var assets = options[type];\n // check local registration variations first\n if (hasOwn(assets, id)) { return assets[id] }\n var camelizedId = camelize(id);\n if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }\n var PascalCaseId = capitalize(camelizedId);\n if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }\n // fallback to prototype chain\n var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];\n if (false) {\n warn(\n 'Failed to resolve ' + type.slice(0, -1) + ': ' + id,\n options\n );\n }\n return res\n}\n\n/* */\n\n\n\nfunction validateProp (\n key,\n propOptions,\n propsData,\n vm\n) {\n var prop = propOptions[key];\n var absent = !hasOwn(propsData, key);\n var value = propsData[key];\n // boolean casting\n var booleanIndex = getTypeIndex(Boolean, prop.type);\n if (booleanIndex > -1) {\n if (absent && !hasOwn(prop, 'default')) {\n value = false;\n } else if (value === '' || value === hyphenate(key)) {\n // only cast empty string / same name to boolean if\n // boolean has higher priority\n var stringIndex = getTypeIndex(String, prop.type);\n if (stringIndex < 0 || booleanIndex < stringIndex) {\n value = true;\n }\n }\n }\n // check default value\n if (value === undefined) {\n value = getPropDefaultValue(vm, prop, key);\n // since the default value is a fresh copy,\n // make sure to observe it.\n var prevShouldObserve = shouldObserve;\n toggleObserving(true);\n observe(value);\n toggleObserving(prevShouldObserve);\n }\n if (\n false\n ) {\n assertProp(prop, key, value, vm, absent);\n }\n return value\n}\n\n/**\n * Get the default value of a prop.\n */\nfunction getPropDefaultValue (vm, prop, key) {\n // no default, return undefined\n if (!hasOwn(prop, 'default')) {\n return undefined\n }\n var def = prop.default;\n // warn against non-factory defaults for Object & Array\n if (false) {\n warn(\n 'Invalid default value for prop \"' + key + '\": ' +\n 'Props with type Object/Array must use a factory function ' +\n 'to return the default value.',\n vm\n );\n }\n // the raw prop value was also undefined from previous render,\n // return previous default value to avoid unnecessary watcher trigger\n if (vm && vm.$options.propsData &&\n vm.$options.propsData[key] === undefined &&\n vm._props[key] !== undefined\n ) {\n return vm._props[key]\n }\n // call factory function for non-Function types\n // a value is Function if its prototype is function even across different execution context\n return typeof def === 'function' && getType(prop.type) !== 'Function'\n ? def.call(vm)\n : def\n}\n\n/**\n * Assert whether a prop is valid.\n */\nfunction assertProp (\n prop,\n name,\n value,\n vm,\n absent\n) {\n if (prop.required && absent) {\n warn(\n 'Missing required prop: \"' + name + '\"',\n vm\n );\n return\n }\n if (value == null && !prop.required) {\n return\n }\n var type = prop.type;\n var valid = !type || type === true;\n var expectedTypes = [];\n if (type) {\n if (!Array.isArray(type)) {\n type = [type];\n }\n for (var i = 0; i < type.length && !valid; i++) {\n var assertedType = assertType(value, type[i]);\n expectedTypes.push(assertedType.expectedType || '');\n valid = assertedType.valid;\n }\n }\n\n if (!valid) {\n warn(\n getInvalidTypeMessage(name, value, expectedTypes),\n vm\n );\n return\n }\n var validator = prop.validator;\n if (validator) {\n if (!validator(value)) {\n warn(\n 'Invalid prop: custom validator check failed for prop \"' + name + '\".',\n vm\n );\n }\n }\n}\n\nvar simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;\n\nfunction assertType (value, type) {\n var valid;\n var expectedType = getType(type);\n if (simpleCheckRE.test(expectedType)) {\n var t = typeof value;\n valid = t === expectedType.toLowerCase();\n // for primitive wrapper objects\n if (!valid && t === 'object') {\n valid = value instanceof type;\n }\n } else if (expectedType === 'Object') {\n valid = isPlainObject(value);\n } else if (expectedType === 'Array') {\n valid = Array.isArray(value);\n } else {\n valid = value instanceof type;\n }\n return {\n valid: valid,\n expectedType: expectedType\n }\n}\n\n/**\n * Use function string name to check built-in types,\n * because a simple equality check will fail when running\n * across different vms / iframes.\n */\nfunction getType (fn) {\n var match = fn && fn.toString().match(/^\\s*function (\\w+)/);\n return match ? match[1] : ''\n}\n\nfunction isSameType (a, b) {\n return getType(a) === getType(b)\n}\n\nfunction getTypeIndex (type, expectedTypes) {\n if (!Array.isArray(expectedTypes)) {\n return isSameType(expectedTypes, type) ? 0 : -1\n }\n for (var i = 0, len = expectedTypes.length; i < len; i++) {\n if (isSameType(expectedTypes[i], type)) {\n return i\n }\n }\n return -1\n}\n\nfunction getInvalidTypeMessage (name, value, expectedTypes) {\n var message = \"Invalid prop: type check failed for prop \\\"\" + name + \"\\\".\" +\n \" Expected \" + (expectedTypes.map(capitalize).join(', '));\n var expectedType = expectedTypes[0];\n var receivedType = toRawType(value);\n var expectedValue = styleValue(value, expectedType);\n var receivedValue = styleValue(value, receivedType);\n // check if we need to specify expected value\n if (expectedTypes.length === 1 &&\n isExplicable(expectedType) &&\n !isBoolean(expectedType, receivedType)) {\n message += \" with value \" + expectedValue;\n }\n message += \", got \" + receivedType + \" \";\n // check if we need to specify received value\n if (isExplicable(receivedType)) {\n message += \"with value \" + receivedValue + \".\";\n }\n return message\n}\n\nfunction styleValue (value, type) {\n if (type === 'String') {\n return (\"\\\"\" + value + \"\\\"\")\n } else if (type === 'Number') {\n return (\"\" + (Number(value)))\n } else {\n return (\"\" + value)\n }\n}\n\nfunction isExplicable (value) {\n var explicitTypes = ['string', 'number', 'boolean'];\n return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })\n}\n\nfunction isBoolean () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })\n}\n\n/* */\n\nfunction handleError (err, vm, info) {\n // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.\n // See: https://github.com/vuejs/vuex/issues/1505\n pushTarget();\n try {\n if (vm) {\n var cur = vm;\n while ((cur = cur.$parent)) {\n var hooks = cur.$options.errorCaptured;\n if (hooks) {\n for (var i = 0; i < hooks.length; i++) {\n try {\n var capture = hooks[i].call(cur, err, vm, info) === false;\n if (capture) { return }\n } catch (e) {\n globalHandleError(e, cur, 'errorCaptured hook');\n }\n }\n }\n }\n }\n globalHandleError(err, vm, info);\n } finally {\n popTarget();\n }\n}\n\nfunction invokeWithErrorHandling (\n handler,\n context,\n args,\n vm,\n info\n) {\n var res;\n try {\n res = args ? handler.apply(context, args) : handler.call(context);\n if (res && !res._isVue && isPromise(res) && !res._handled) {\n res.catch(function (e) { return handleError(e, vm, info + \" (Promise/async)\"); });\n // issue #9511\n // avoid catch triggering multiple times when nested calls\n res._handled = true;\n }\n } catch (e) {\n handleError(e, vm, info);\n }\n return res\n}\n\nfunction globalHandleError (err, vm, info) {\n if (config.errorHandler) {\n try {\n return config.errorHandler.call(null, err, vm, info)\n } catch (e) {\n // if the user intentionally throws the original error in the handler,\n // do not log it twice\n if (e !== err) {\n logError(e, null, 'config.errorHandler');\n }\n }\n }\n logError(err, vm, info);\n}\n\nfunction logError (err, vm, info) {\n if (false) {\n warn((\"Error in \" + info + \": \\\"\" + (err.toString()) + \"\\\"\"), vm);\n }\n /* istanbul ignore else */\n if ((inBrowser || inWeex) && typeof console !== 'undefined') {\n console.error(err);\n } else {\n throw err\n }\n}\n\n/* */\n\nvar isUsingMicroTask = false;\n\nvar callbacks = [];\nvar pending = false;\n\nfunction flushCallbacks () {\n pending = false;\n var copies = callbacks.slice(0);\n callbacks.length = 0;\n for (var i = 0; i < copies.length; i++) {\n copies[i]();\n }\n}\n\n// Here we have async deferring wrappers using microtasks.\n// In 2.5 we used (macro) tasks (in combination with microtasks).\n// However, it has subtle problems when state is changed right before repaint\n// (e.g. #6813, out-in transitions).\n// Also, using (macro) tasks in event handler would cause some weird behaviors\n// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).\n// So we now use microtasks everywhere, again.\n// A major drawback of this tradeoff is that there are some scenarios\n// where microtasks have too high a priority and fire in between supposedly\n// sequential events (e.g. #4521, #6690, which have workarounds)\n// or even between bubbling of the same event (#6566).\nvar timerFunc;\n\n// The nextTick behavior leverages the microtask queue, which can be accessed\n// via either native Promise.then or MutationObserver.\n// MutationObserver has wider support, however it is seriously bugged in\n// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It\n// completely stops working after triggering a few times... so, if native\n// Promise is available, we will use it:\n/* istanbul ignore next, $flow-disable-line */\nif (typeof Promise !== 'undefined' && isNative(Promise)) {\n var p = Promise.resolve();\n timerFunc = function () {\n p.then(flushCallbacks);\n // In problematic UIWebViews, Promise.then doesn't completely break, but\n // it can get stuck in a weird state where callbacks are pushed into the\n // microtask queue but the queue isn't being flushed, until the browser\n // needs to do some other work, e.g. handle a timer. Therefore we can\n // \"force\" the microtask queue to be flushed by adding an empty timer.\n if (isIOS) { setTimeout(noop); }\n };\n isUsingMicroTask = true;\n} else if (!isIE && typeof MutationObserver !== 'undefined' && (\n isNative(MutationObserver) ||\n // PhantomJS and iOS 7.x\n MutationObserver.toString() === '[object MutationObserverConstructor]'\n)) {\n // Use MutationObserver where native Promise is not available,\n // e.g. PhantomJS, iOS7, Android 4.4\n // (#6466 MutationObserver is unreliable in IE11)\n var counter = 1;\n var observer = new MutationObserver(flushCallbacks);\n var textNode = document.createTextNode(String(counter));\n observer.observe(textNode, {\n characterData: true\n });\n timerFunc = function () {\n counter = (counter + 1) % 2;\n textNode.data = String(counter);\n };\n isUsingMicroTask = true;\n} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {\n // Fallback to setImmediate.\n // Technically it leverages the (macro) task queue,\n // but it is still a better choice than setTimeout.\n timerFunc = function () {\n setImmediate(flushCallbacks);\n };\n} else {\n // Fallback to setTimeout.\n timerFunc = function () {\n setTimeout(flushCallbacks, 0);\n };\n}\n\nfunction nextTick (cb, ctx) {\n var _resolve;\n callbacks.push(function () {\n if (cb) {\n try {\n cb.call(ctx);\n } catch (e) {\n handleError(e, ctx, 'nextTick');\n }\n } else if (_resolve) {\n _resolve(ctx);\n }\n });\n if (!pending) {\n pending = true;\n timerFunc();\n }\n // $flow-disable-line\n if (!cb && typeof Promise !== 'undefined') {\n return new Promise(function (resolve) {\n _resolve = resolve;\n })\n }\n}\n\n/* */\n\nvar mark;\nvar measure;\n\nif (false) {\n var perf = inBrowser && window.performance;\n /* istanbul ignore if */\n if (\n perf &&\n perf.mark &&\n perf.measure &&\n perf.clearMarks &&\n perf.clearMeasures\n ) {\n mark = function (tag) { return perf.mark(tag); };\n measure = function (name, startTag, endTag) {\n perf.measure(name, startTag, endTag);\n perf.clearMarks(startTag);\n perf.clearMarks(endTag);\n // perf.clearMeasures(name)\n };\n }\n}\n\n/* not type checking this file because flow doesn't play well with Proxy */\n\nvar initProxy;\n\nif (false) {\n var allowedGlobals = makeMap(\n 'Infinity,undefined,NaN,isFinite,isNaN,' +\n 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +\n 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +\n 'require' // for Webpack/Browserify\n );\n\n var warnNonPresent = function (target, key) {\n warn(\n \"Property or method \\\"\" + key + \"\\\" is not defined on the instance but \" +\n 'referenced during render. Make sure that this property is reactive, ' +\n 'either in the data option, or for class-based components, by ' +\n 'initializing the property. ' +\n 'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',\n target\n );\n };\n\n var warnReservedPrefix = function (target, key) {\n warn(\n \"Property \\\"\" + key + \"\\\" must be accessed with \\\"$data.\" + key + \"\\\" because \" +\n 'properties starting with \"$\" or \"_\" are not proxied in the Vue instance to ' +\n 'prevent conflicts with Vue internals. ' +\n 'See: https://vuejs.org/v2/api/#data',\n target\n );\n };\n\n var hasProxy =\n typeof Proxy !== 'undefined' && isNative(Proxy);\n\n if (hasProxy) {\n var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');\n config.keyCodes = new Proxy(config.keyCodes, {\n set: function set (target, key, value) {\n if (isBuiltInModifier(key)) {\n warn((\"Avoid overwriting built-in modifier in config.keyCodes: .\" + key));\n return false\n } else {\n target[key] = value;\n return true\n }\n }\n });\n }\n\n var hasHandler = {\n has: function has (target, key) {\n var has = key in target;\n var isAllowed = allowedGlobals(key) ||\n (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));\n if (!has && !isAllowed) {\n if (key in target.$data) { warnReservedPrefix(target, key); }\n else { warnNonPresent(target, key); }\n }\n return has || !isAllowed\n }\n };\n\n var getHandler = {\n get: function get (target, key) {\n if (typeof key === 'string' && !(key in target)) {\n if (key in target.$data) { warnReservedPrefix(target, key); }\n else { warnNonPresent(target, key); }\n }\n return target[key]\n }\n };\n\n initProxy = function initProxy (vm) {\n if (hasProxy) {\n // determine which proxy handler to use\n var options = vm.$options;\n var handlers = options.render && options.render._withStripped\n ? getHandler\n : hasHandler;\n vm._renderProxy = new Proxy(vm, handlers);\n } else {\n vm._renderProxy = vm;\n }\n };\n}\n\n/* */\n\nvar seenObjects = new _Set();\n\n/**\n * Recursively traverse an object to evoke all converted\n * getters, so that every nested property inside the object\n * is collected as a \"deep\" dependency.\n */\nfunction traverse (val) {\n _traverse(val, seenObjects);\n seenObjects.clear();\n}\n\nfunction _traverse (val, seen) {\n var i, keys;\n var isA = Array.isArray(val);\n if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {\n return\n }\n if (val.__ob__) {\n var depId = val.__ob__.dep.id;\n if (seen.has(depId)) {\n return\n }\n seen.add(depId);\n }\n if (isA) {\n i = val.length;\n while (i--) { _traverse(val[i], seen); }\n } else {\n keys = Object.keys(val);\n i = keys.length;\n while (i--) { _traverse(val[keys[i]], seen); }\n }\n}\n\n/* */\n\nvar normalizeEvent = cached(function (name) {\n var passive = name.charAt(0) === '&';\n name = passive ? name.slice(1) : name;\n var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first\n name = once$$1 ? name.slice(1) : name;\n var capture = name.charAt(0) === '!';\n name = capture ? name.slice(1) : name;\n return {\n name: name,\n once: once$$1,\n capture: capture,\n passive: passive\n }\n});\n\nfunction createFnInvoker (fns, vm) {\n function invoker () {\n var arguments$1 = arguments;\n\n var fns = invoker.fns;\n if (Array.isArray(fns)) {\n var cloned = fns.slice();\n for (var i = 0; i < cloned.length; i++) {\n invokeWithErrorHandling(cloned[i], null, arguments$1, vm, \"v-on handler\");\n }\n } else {\n // return handler return value for single handlers\n return invokeWithErrorHandling(fns, null, arguments, vm, \"v-on handler\")\n }\n }\n invoker.fns = fns;\n return invoker\n}\n\nfunction updateListeners (\n on,\n oldOn,\n add,\n remove$$1,\n createOnceHandler,\n vm\n) {\n var name, def$$1, cur, old, event;\n for (name in on) {\n def$$1 = cur = on[name];\n old = oldOn[name];\n event = normalizeEvent(name);\n if (isUndef(cur)) {\n \"production\" !== 'production' && warn(\n \"Invalid handler for event \\\"\" + (event.name) + \"\\\": got \" + String(cur),\n vm\n );\n } else if (isUndef(old)) {\n if (isUndef(cur.fns)) {\n cur = on[name] = createFnInvoker(cur, vm);\n }\n if (isTrue(event.once)) {\n cur = on[name] = createOnceHandler(event.name, cur, event.capture);\n }\n add(event.name, cur, event.capture, event.passive, event.params);\n } else if (cur !== old) {\n old.fns = cur;\n on[name] = old;\n }\n }\n for (name in oldOn) {\n if (isUndef(on[name])) {\n event = normalizeEvent(name);\n remove$$1(event.name, oldOn[name], event.capture);\n }\n }\n}\n\n/* */\n\nfunction mergeVNodeHook (def, hookKey, hook) {\n if (def instanceof VNode) {\n def = def.data.hook || (def.data.hook = {});\n }\n var invoker;\n var oldHook = def[hookKey];\n\n function wrappedHook () {\n hook.apply(this, arguments);\n // important: remove merged hook to ensure it's called only once\n // and prevent memory leak\n remove(invoker.fns, wrappedHook);\n }\n\n if (isUndef(oldHook)) {\n // no existing hook\n invoker = createFnInvoker([wrappedHook]);\n } else {\n /* istanbul ignore if */\n if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {\n // already a merged invoker\n invoker = oldHook;\n invoker.fns.push(wrappedHook);\n } else {\n // existing plain hook\n invoker = createFnInvoker([oldHook, wrappedHook]);\n }\n }\n\n invoker.merged = true;\n def[hookKey] = invoker;\n}\n\n/* */\n\nfunction extractPropsFromVNodeData (\n data,\n Ctor,\n tag\n) {\n // we are only extracting raw values here.\n // validation and default values are handled in the child\n // component itself.\n var propOptions = Ctor.options.props;\n if (isUndef(propOptions)) {\n return\n }\n var res = {};\n var attrs = data.attrs;\n var props = data.props;\n if (isDef(attrs) || isDef(props)) {\n for (var key in propOptions) {\n var altKey = hyphenate(key);\n if (false) {\n var keyInLowerCase = key.toLowerCase();\n if (\n key !== keyInLowerCase &&\n attrs && hasOwn(attrs, keyInLowerCase)\n ) {\n tip(\n \"Prop \\\"\" + keyInLowerCase + \"\\\" is passed to component \" +\n (formatComponentName(tag || Ctor)) + \", but the declared prop name is\" +\n \" \\\"\" + key + \"\\\". \" +\n \"Note that HTML attributes are case-insensitive and camelCased \" +\n \"props need to use their kebab-case equivalents when using in-DOM \" +\n \"templates. You should probably use \\\"\" + altKey + \"\\\" instead of \\\"\" + key + \"\\\".\"\n );\n }\n }\n checkProp(res, props, key, altKey, true) ||\n checkProp(res, attrs, key, altKey, false);\n }\n }\n return res\n}\n\nfunction checkProp (\n res,\n hash,\n key,\n altKey,\n preserve\n) {\n if (isDef(hash)) {\n if (hasOwn(hash, key)) {\n res[key] = hash[key];\n if (!preserve) {\n delete hash[key];\n }\n return true\n } else if (hasOwn(hash, altKey)) {\n res[key] = hash[altKey];\n if (!preserve) {\n delete hash[altKey];\n }\n return true\n }\n }\n return false\n}\n\n/* */\n\n// The template compiler attempts to minimize the need for normalization by\n// statically analyzing the template at compile time.\n//\n// For plain HTML markup, normalization can be completely skipped because the\n// generated render function is guaranteed to return Array. There are\n// two cases where extra normalization is needed:\n\n// 1. When the children contains components - because a functional component\n// may return an Array instead of a single root. In this case, just a simple\n// normalization is needed - if any child is an Array, we flatten the whole\n// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep\n// because functional components already normalize their own children.\nfunction simpleNormalizeChildren (children) {\n for (var i = 0; i < children.length; i++) {\n if (Array.isArray(children[i])) {\n return Array.prototype.concat.apply([], children)\n }\n }\n return children\n}\n\n// 2. When the children contains constructs that always generated nested Arrays,\n// e.g.