侧边栏

linwenling

2023-04-04 1dc3c8bbc6ad0afdb8dfdfa4c0b9334d3095cf10

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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));