4.4

linwenling

2023-04-04 ffc438b5d62f0a477a4271da4a9b3fc37bbf5eeb

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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));