修改到293

yz3456

2024-05-27 fd08342ac7b11db592ed04b2cbc51eac748d7535

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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));