Merge remote-tracking branch 'origin/master'

aijinhui

2023-11-03 950f31ee2351e2d26ede3eeba49c09d52f46b296

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