| 1 | <img src="images/immer-logo.svg" height="200px" align="right"/>
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| 2 |
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| 3 | # Immer
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| 4 |
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| 5 | [](https://www.npmjs.com/package/immer) [](https://github.com/immerjs/immer/actions?query=branch%3Amain) [](https://coveralls.io/github/immerjs/immer?branch=main) [](https://github.com/prettier/prettier) [](#backers) [](#sponsors) [](https://gitpod.io/#https://github.com/immerjs/immer)
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| 6 |
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| 7 | _Create the next immutable state tree by simply modifying the current tree_
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| 8 |
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| 9 | 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
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| 10 |
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| 11 | ## Contribute using one-click online setup
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| 12 |
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| 13 | You can use Gitpod (a free online VS Code like IDE) for contributing online. With a single click it will launch a workspace and automatically:
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| 14 |
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| 15 | - clone the immer repo.
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| 16 | - install the dependencies.
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| 17 | - run `yarn run start`.
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| 18 |
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| 19 | so that you can start coding straight away.
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| 20 |
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| 21 | [](https://gitpod.io/from-referrer/)
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| 22 |
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| 23 | ## Documentation
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| 24 |
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| 25 | The documentation of this package is hosted at https://immerjs.github.io/immer/
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| 26 |
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| 27 | ## Support
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| 28 |
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| 29 | Did Immer make a difference to your project? Join the open collective at https://opencollective.com/immer!
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| 30 |
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| 31 | ## Release notes
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| 32 |
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| 33 | https://github.com/immerjs/immer/releases
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