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- /*!
- * statuses
- * Copyright(c) 2014 Jonathan Ong
- * Copyright(c) 2016 Douglas Christopher Wilson
- * MIT Licensed
- */
- 'use strict'
- /**
- * Module dependencies.
- * @private
- */
- var codes = require('./codes.json')
- /**
- * Module exports.
- * @public
- */
- module.exports = status
- // array of status codes
- status.codes = populateStatusesMap(status, codes)
- // status codes for redirects
- status.redirect = {
- 300: true,
- 301: true,
- 302: true,
- 303: true,
- 305: true,
- 307: true,
- 308: true
- }
- // status codes for empty bodies
- status.empty = {
- 204: true,
- 205: true,
- 304: true
- }
- // status codes for when you should retry the request
- status.retry = {
- 502: true,
- 503: true,
- 504: true
- }
- /**
- * Populate the statuses map for given codes.
- * @private
- */
- function populateStatusesMap (statuses, codes) {
- var arr = []
- Object.keys(codes).forEach(function forEachCode (code) {
- var message = codes[code]
- var status = Number(code)
- // Populate properties
- statuses[status] = message
- statuses[message] = status
- statuses[message.toLowerCase()] = status
- // Add to array
- arr.push(status)
- })
- return arr
- }
- /**
- * Get the status code.
- *
- * Given a number, this will throw if it is not a known status
- * code, otherwise the code will be returned. Given a string,
- * the string will be parsed for a number and return the code
- * if valid, otherwise will lookup the code assuming this is
- * the status message.
- *
- * @param {string|number} code
- * @returns {number}
- * @public
- */
- function status (code) {
- if (typeof code === 'number') {
- if (!status[code]) throw new Error('invalid status code: ' + code)
- return code
- }
- if (typeof code !== 'string') {
- throw new TypeError('code must be a number or string')
- }
- // '403'
- var n = parseInt(code, 10)
- if (!isNaN(n)) {
- if (!status[n]) throw new Error('invalid status code: ' + n)
- return n
- }
- n = status[code.toLowerCase()]
- if (!n) throw new Error('invalid status message: "' + code + '"')
- return n
- }
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