How Can I Efficiently Rename Keys in JavaScript Objects?

Renaming Keys in JavaScript Objects

Enhancing the efficiency of key renaming in JavaScript objects is a pertinent challenge for developers seeking optimization. While a simple approach involves reassigning the key's value and subsequently deleting the old key, a more refined solution exists.

The most comprehensive and accurate method involves utilizing object property definitions:

if (old_key !== new_key) {
  Object.defineProperty(o, new_key,
    Object.getOwnPropertyDescriptor(o, old_key));
  delete o[old_key];
}

This approach guarantees that the renamed property retains the identical behavior as its original counterpart. Notably, there seems to be no significant advantage in encapsulating this functionality as a dedicated method in Object.prototype.

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