优化

‘liusuyi’

2023-10-21 94023628bd9c5e6bf724c37371a19b60d338b291

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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));