Merge remote-tracking branch 'origin/master'

linwenling

2023-10-07 38edd817f503603d2b86703e95ecd115d2c789bd

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