优化

liusuyi

2023-06-29 3daa378637a5ceeb4965b554f528a7a36e3d5c2a

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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));