88 lines
2.5 KiB
JavaScript
88 lines
2.5 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.attributesWithLists = void 0;
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exports.default = collapseAttributeWhitespace;
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var _helpers = require("../helpers");
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const attributesWithLists = new Set(['class', 'dropzone', 'rel', // a, area, link
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'ping', // a, area
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'sandbox', // iframe
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'sizes', // link
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'headers' // td, th
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]);
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/** @type Record<string, string[] | null> */
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exports.attributesWithLists = attributesWithLists;
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const attributesWithSingleValue = {
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accept: ['input'],
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action: ['form'],
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accesskey: null,
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'accept-charset': ['form'],
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cite: ['blockquote', 'del', 'ins', 'q'],
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cols: ['textarea'],
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colspan: ['td', 'th'],
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data: ['object'],
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dropzone: null,
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formaction: ['button', 'input'],
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height: ['canvas', 'embed', 'iframe', 'img', 'input', 'object', 'video'],
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high: ['meter'],
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href: ['a', 'area', 'base', 'link'],
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itemid: null,
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low: ['meter'],
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manifest: ['html'],
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max: ['meter', 'progress'],
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maxlength: ['input', 'textarea'],
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media: ['source'],
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min: ['meter'],
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minlength: ['input', 'textarea'],
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optimum: ['meter'],
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ping: ['a', 'area'],
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poster: ['video'],
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profile: ['head'],
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rows: ['textarea'],
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rowspan: ['td', 'th'],
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size: ['input', 'select'],
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span: ['col', 'colgroup'],
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src: ['audio', 'embed', 'iframe', 'img', 'input', 'script', 'source', 'track', 'video'],
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start: ['ol'],
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step: ['input'],
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style: null,
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tabindex: null,
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usemap: ['img', 'object'],
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value: ['li', 'meter', 'progress'],
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width: ['canvas', 'embed', 'iframe', 'img', 'input', 'object', 'video']
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};
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/** Collapse whitespaces 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.entries(node.attrs).forEach(([attrName, attrValue]) => {
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const attrNameLower = attrName.toLowerCase();
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if (attributesWithLists.has(attrNameLower)) {
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const newAttrValue = attrValue.replace(/\s+/g, ' ').trim();
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node.attrs[attrName] = newAttrValue;
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return node;
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}
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if ((0, _helpers.isEventHandler)(attrNameLower) || Object.hasOwnProperty.call(attributesWithSingleValue, attrNameLower) && (attributesWithSingleValue[attrNameLower] === null || attributesWithSingleValue[attrNameLower].includes(node.tag))) {
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node.attrs[attrName] = minifySingleAttributeValue(attrValue);
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return node;
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}
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});
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return node;
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});
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return tree;
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}
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function minifySingleAttributeValue(value) {
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return typeof value === 'string' ? String(value).trim() : value;
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} |
