Clone an object — AI Prompts for JavaScript

3 ready prompts

Written for the moment this actually comes up.

Improve — make it easier to accept

Before I hand this to the reviewer, make the clone simple to audit: produce a deep clone function…

Before I hand this to the reviewer, make the clone simple to audit: produce a deep clone function named deepClone that handles nested plain objects and arrays, avoids copying functions, and returns a new object for the example above. Keep it minimal and add one short comment about limitations.

Decide — diagnose the stuck moment

I copied an object with const copy = original; made changes to copy.meta.retries and saw original…

I mutated the original while thinking I had cloned it

I copied an object with const copy = original; made changes to copy.meta.retries and saw original change too. I don't know whether to use spread, Object.assign, or JSON methods for a reliable clone here. Which approach caused this, and which cloning method should I use for nested plain objects without functions?

Become — change the pattern

On many tickets we see bugs caused by shallow copies: someone uses the spread operator and later…

We repeatedly lose time fixing accidental shared references

On many tickets we see bugs caused by shallow copies: someone uses the spread operator and later mutates a nested field, creating production defects. I want a simple team habit or utility that prevents this class of bug without forcing a heavyweight library. What should we adopt as the default cloning practice?

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