What are some alternatives to deep merge libraries in JavaScript?

What are some alternatives to deep merge libraries in JavaScript?

There are several alternatives to deep merge libraries in JavaScript, such as Lodash's _.merge, Immer, and Rambda's mergeDeepRight. Each has its own advantages depending on your use case.

Can you explain how Lodash's _.merge works?

Sure! Lodash's _.merge function recursively merges own and inherited enumerable string keyed properties of source objects into the destination object. It mutates the destination object and returns it.

What about Immer? How does it differ from Lodash?

Immer allows you to work with immutable state in a more convenient way. Instead of merging, you can use a draft state to make changes, and Immer will handle the immutability for you.

Are there any performance considerations I should be aware of?

Yes, performance can vary based on the library and the size of the objects being merged. Lodash is generally faster for simple merges, while Immer may have overhead due to its immutability handling.