Frequently Asked Questions

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Q: How does Immer work?

Read the (second part of the) introduction blog.

Q: Does Immer use structural sharing? So that my selectors can be memoized and such?

A: Yes

Q: Does Immer support deep updates?

A: Yes

Q: I can't rely on Proxies being present on my target environments. Can I use Immer?

A: Yes - view details

Q: Can I typecheck my data structures when using Immer?

A: Yes

Q: Can I store Date objects, functions etc in my state tree when using Immer?

A: Yes

Q: Can I use Maps and Sets?

A: Yes

Q: Is it fast?

A: Yes

Q: Idea! Can Immer freeze the state for me?

A: Yes