新增了测试代码

feige

2025-09-15 a427dc73733de616424af4e3dd971fd3db763b7b

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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));