代码初始化

jiangping

2025-04-17 456a06d365dcc73d2d0e2d2a4b177d875152380b

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'use strict';
var userAgent = require('../internals/environment-user-agent');
 
var firefox = userAgent.match(/firefox\/(\d+)/i);
 
module.exports = !!firefox && +firefox[1];