4.4侧边栏

linwenling

2023-04-04 e3bc460e60710e04f05888c7dc5dd819dcb84be1

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var global = require('../internals/global');
var isCallable = require('../internals/is-callable');
 
var WeakMap = global.WeakMap;
 
module.exports = isCallable(WeakMap) && /native code/.test(String(WeakMap));