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Built-in `deepCopy/deepClone` Prototype for both objects and iterable objects (based on the structured cloning algorithm) · Issue #150 · tc39/proposals · GitHub
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JavaScript Object: Get a copy of the object where the keys have become the values and the values the keys - w3resource
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A Deep Dive into Shallow Copy and Deep Copy in JavaScript | by Ayush Verma | JavaScript in Plain English
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