修改了代码

feige

4 天以前 f43ef0c77c6f437bd0f7459d75168e6f77e334bb

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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));