清淤锁重新封装

aijinhui

2023-11-24 c2e9f82dfe87e9bd967d8445bd4b5b632f3f0d1a

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