35 lines
667 B
JavaScript
35 lines
667 B
JavaScript
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'use strict';
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const cssTree = require('css-tree');
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class Index {
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constructor() {
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this.map = new Map();
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}
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resolve(str) {
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let index = this.map.get(str);
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if (index === undefined) {
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index = this.map.size + 1;
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this.map.set(str, index);
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}
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return index;
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}
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}
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function createDeclarationIndexer() {
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const ids = new Index();
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return function markDeclaration(node) {
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const id = cssTree.generate(node);
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node.id = ids.resolve(id);
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node.length = id.length;
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node.fingerprint = null;
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return node;
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};
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}
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module.exports = createDeclarationIndexer;
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