# Immer

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## Pages

- [API overview](api.md): | Exported name | Description | Section |
- [Array Methods Plugin](array-methods.md): The Array Methods Plugin (`enableArrayMethods()`) optimizes array operations within Immer producers by avoiding unnec...
- [Built with Immer](built-with.md): - [react-copy-write](https://github.com/aweary/react-copy-write) _Immutable state with a mutable API_
- [Classes](complex-objects.md): Plain objects (objects without a prototype), arrays,`Map`s and`Set`s are always drafted by Immer. Every other objec...
- [Extracting the current state from a draft](current.md): Immer exposes a named export`current`that creates a copy of the current state of the draft. This can be very useful...
- [Frequently Asked Questions](faq.md): Read the (second part of the) [introduction blog](https://medium.com/@mweststrate/introducing-immer-immutability-the-...
- [Introduction to Immer](introduction.md): Immer (German for: always) is a tiny package that allows you to work with immutable state in a more convenient way.
- [Map and Set](map-set.md): _⚠ Since version 6 support for`Map`s and`Set`s has to be enabled explicitly by calling [`enableMapSet()`](./install...
- [Extracting the original state from a draft](original.md): Immer exposes a named export`original`that will get the original object from the proxied instance inside`produce`...
- [Porting to other languages](other-lang.md): Immer has been ported to other programming languages.
- [Pitfalls](pitfalls.md): For performance tips, see [Performance Tips](./performance.mdx#performance-tips).
- [External resources](resources.md): - Blog: [The Rise of Immer in React](https://www.netlify.com/blog/2018/09/12/the-rise-of-immer-in-react/)
- [Update patterns](update-patterns.md): Working with immutable data, before Immer, used to mean learning all the immutable update patterns.