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- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.verifyPseudoArgs = exports.pseudos = void 0;
- // While filters are precompiled, pseudos get called when they are needed
- exports.pseudos = {
- empty: function (elem, _a) {
- var adapter = _a.adapter;
- return !adapter.getChildren(elem).some(function (elem) {
- // FIXME: `getText` call is potentially expensive.
- return adapter.isTag(elem) || adapter.getText(elem) !== "";
- });
- },
- "first-child": function (elem, _a) {
- var adapter = _a.adapter, equals = _a.equals;
- var firstChild = adapter
- .getSiblings(elem)
- .find(function (elem) { return adapter.isTag(elem); });
- return firstChild != null && equals(elem, firstChild);
- },
- "last-child": function (elem, _a) {
- var adapter = _a.adapter, equals = _a.equals;
- var siblings = adapter.getSiblings(elem);
- for (var i = siblings.length - 1; i >= 0; i--) {
- if (equals(elem, siblings[i]))
- return true;
- if (adapter.isTag(siblings[i]))
- break;
- }
- return false;
- },
- "first-of-type": function (elem, _a) {
- var adapter = _a.adapter, equals = _a.equals;
- var siblings = adapter.getSiblings(elem);
- var elemName = adapter.getName(elem);
- for (var i = 0; i < siblings.length; i++) {
- var currentSibling = siblings[i];
- if (equals(elem, currentSibling))
- return true;
- if (adapter.isTag(currentSibling) &&
- adapter.getName(currentSibling) === elemName) {
- break;
- }
- }
- return false;
- },
- "last-of-type": function (elem, _a) {
- var adapter = _a.adapter, equals = _a.equals;
- var siblings = adapter.getSiblings(elem);
- var elemName = adapter.getName(elem);
- for (var i = siblings.length - 1; i >= 0; i--) {
- var currentSibling = siblings[i];
- if (equals(elem, currentSibling))
- return true;
- if (adapter.isTag(currentSibling) &&
- adapter.getName(currentSibling) === elemName) {
- break;
- }
- }
- return false;
- },
- "only-of-type": function (elem, _a) {
- var adapter = _a.adapter, equals = _a.equals;
- var elemName = adapter.getName(elem);
- return adapter
- .getSiblings(elem)
- .every(function (sibling) {
- return equals(elem, sibling) ||
- !adapter.isTag(sibling) ||
- adapter.getName(sibling) !== elemName;
- });
- },
- "only-child": function (elem, _a) {
- var adapter = _a.adapter, equals = _a.equals;
- return adapter
- .getSiblings(elem)
- .every(function (sibling) { return equals(elem, sibling) || !adapter.isTag(sibling); });
- },
- };
- function verifyPseudoArgs(func, name, subselect) {
- if (subselect === null) {
- if (func.length > 2) {
- throw new Error("pseudo-selector :".concat(name, " requires an argument"));
- }
- }
- else if (func.length === 2) {
- throw new Error("pseudo-selector :".concat(name, " doesn't have any arguments"));
- }
- }
- exports.verifyPseudoArgs = verifyPseudoArgs;
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