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Create React App 4.0 Alpha Testing
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README.md

Create New App

JavaScript Template

npx create-react-app@next --scripts-version=@next --template=cra-template@next my-js-app

TypeScript Template

npx create-react-app@next --scripts-version=@next --template=typescript@next my-ts-app

Update Existing App

To update an existing app you can change the react-scripts version in package.json to next and then run yarn or npm install

Changes

You can see a list of all the changes in the 4.0 release here

@wunnle
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wunnle commented Sep 23, 2020

So excited about this! Can't wait to use Fast Refresh and new JSX transform ⚛️

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