lepu-test-platform-web/node_modules/clean-css/lib/optimizer/level-2/remove-duplicate-media-quer...

31 lines
661 B
JavaScript

var Token = require('../../tokenizer/token');
var serializeAll = require('../../writer/one-time').all;
var serializeRules = require('../../writer/one-time').rules;
function removeDuplicateMediaQueries(tokens) {
var candidates = {};
var candidate;
var token;
var key;
var i, l;
for (i = 0, l = tokens.length; i < l; i++) {
token = tokens[i];
if (token[0] != Token.NESTED_BLOCK) {
continue;
}
key = serializeRules(token[1]) + '%' + serializeAll(token[2]);
candidate = candidates[key];
if (candidate) {
candidate[2] = [];
}
candidates[key] = token;
}
}
module.exports = removeDuplicateMediaQueries;