immer
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Create your next immutable state by mutating the current one
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<img src="images/immer-logo.svg" height="200px" align="right"/>
# Immer
[](https://www.npmjs.com/package/immer) [](https://travis-ci.org/immerjs/immer) [](https://coveralls.io/github/mweststrate/immer?branch=master)[](https://github.com/prettier/prettier) [](#backers) [](#sponsors)
_Create the next immutable state tree by simply modifying the current tree_
Winner of the "Breakthrough of the year" [React open source award](https://osawards.com/react/) and "Most impactful contribution" [JavaScript open source award](https://osawards.com/javascript/) in 2019
## Documentation
The documentation of this package is hosted at https://immerjs.github.io/immer/
## Support
Did Immer make a difference to your project? Join the open collective at https://opencollective.com/immer!
## Release notes
https://github.com/immerjs/immer/releases