52 lines
1 KiB
JavaScript
52 lines
1 KiB
JavaScript
const micromatch = require('micromatch');
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const { getRoot } = require('../utils');
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const defaultConfig = {
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id: undefined,
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preserve: [
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'viewBox',
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'preserveAspectRatio',
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'class',
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'overflow',
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'stroke?(-*)',
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'fill?(-*)',
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'xmlns?(:*)',
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'role',
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'aria-*'
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]
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};
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/**
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* @param {Object} [config] {@see defaultConfig}
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* @return {Function} PostHTML plugin
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*/
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function svgToSymbol(config = null) {
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const cfg = Object.assign({}, defaultConfig, config);
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return (tree) => {
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const root = getRoot(tree);
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root.tag = 'symbol';
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root.attrs = root.attrs || {};
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const attrNames = Object.keys(root.attrs);
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const attrNamesToPreserve = micromatch(attrNames, cfg.preserve);
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attrNames.forEach((name) => {
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if (!attrNamesToPreserve.includes(name)) {
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delete root.attrs[name];
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}
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});
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if (cfg.id) {
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root.attrs.id = cfg.id;
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}
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// Remove all elements and add symbol node
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tree.splice(0, tree.length, root);
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return tree;
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};
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}
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module.exports = svgToSymbol;
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