shift73k/assets_old/node_modules/csso/lib/restructure/prepare/createDeclarationIndexer.js

31 lines
598 B
JavaScript

var generate = require('css-tree').generate;
function Index() {
this.seed = 0;
this.map = Object.create(null);
}
Index.prototype.resolve = function(str) {
var index = this.map[str];
if (!index) {
index = ++this.seed;
this.map[str] = index;
}
return index;
};
module.exports = function createDeclarationIndexer() {
var ids = new Index();
return function markDeclaration(node) {
var id = generate(node);
node.id = ids.resolve(id);
node.length = id.length;
node.fingerprint = null;
return node;
};
};