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node_modules/clean-css/lib/optimizer/level-2/remove-duplicates.js
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1lostsun
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05 май 2025, 11:35
05 май 2025, 11:35
fe8f535
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var Token = require('../../tokenizer/token'); var serializeBody = require('../../writer/one-time').body; var serializeRules = require('../../writer/one-time').rules; function removeDuplicates(tokens) { var matched = {}; var moreThanOnce = []; var id, token; var body, bodies; for (var i = 0, l = tokens.length; i < l; i++) { token = tokens[i]; if (token[0] != Token.RULE) { continue; } id = serializeRules(token[1]); if (matched[id] && matched[id].length == 1) { moreThanOnce.push(id); } else { matched[id] = matched[id] || []; } matched[id].push(i); } for (i = 0, l = moreThanOnce.length; i < l; i++) { id = moreThanOnce[i]; bodies = []; for (var j = matched[id].length - 1; j >= 0; j--) { token = tokens[matched[id][j]]; body = serializeBody(token[2]); if (bodies.indexOf(body) > -1) { token[2] = []; } else { bodies.push(body); } } } } module.exports = removeDuplicates;