优化

‘liusuyi’

2023-12-04 9dc97871b8aba7c5b2803e77f21f57f8e046528e

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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));