46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = collapseAttributeWhitespace;
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var _collapseAttributeWhitespace = require("./collapseAttributeWhitespace");
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/** Deduplicate values inside list-like attributes (e.g. class, rel) */
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function collapseAttributeWhitespace(tree) {
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tree.walk(node => {
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if (!node.attrs) {
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return node;
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}
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Object.keys(node.attrs).forEach(attrName => {
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const attrNameLower = attrName.toLowerCase();
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if (!_collapseAttributeWhitespace.attributesWithLists.has(attrNameLower)) {
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return;
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}
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const attrValues = node.attrs[attrName].split(/\s/);
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const uniqeAttrValues = new Set();
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const deduplicatedAttrValues = [];
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attrValues.forEach(attrValue => {
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if (!attrValue) {
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// Keep whitespaces
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deduplicatedAttrValues.push('');
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return;
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}
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if (uniqeAttrValues.has(attrValue)) {
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return;
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}
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deduplicatedAttrValues.push(attrValue);
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uniqeAttrValues.add(attrValue);
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});
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node.attrs[attrName] = deduplicatedAttrValues.join(' ');
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});
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return node;
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});
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return tree;
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} |
