优化：流媒体

liusuyi

2024-07-12 d89e0182ad825d0926f4bc98e87d3b966056aac7

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var nativeFunctionToString = require('./_function-to-string');
var WeakMap = require('./_global').WeakMap;
 
module.exports = typeof WeakMap === 'function' && /native code/.test(nativeFunctionToString.call(WeakMap));