优化

‘liusuyi’

2023-05-31 c3e4465b7ac9a90ecc00a58883fcf80c5c7beb81

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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));