How can I fix object merging errors in my code?

I'm getting errors when trying to merge two objects in my JavaScript code. What could be wrong?

There could be several reasons for the errors. Are you using the spread operator or Object.assign() to merge the objects?

I'm using the spread operator. It seems to work for simple objects but fails for nested ones.

Ah, the spread operator only performs a shallow merge. If you have nested objects, you'll need a deep merge function. Would you like help with that?

Yes, please! How can I implement a deep merge function?

You can use libraries like Lodash's merge function, or I can help you write a custom deep merge function if you prefer.