| 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; |