本篇文章源自 jstips仓库的第 42 号技巧（原文档），深入剖析一种针对内置原型（builtin prototype）的经典攻击方式——unapply 攻击：外部代码通过重写 Array.prototype 等内置方法，劫持闭包中原本不可见的状态，进而破坏依赖 ES5 polyfill 的应用。读完本文，你将理解 ...

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