Creating a React 19 project

As React 19 hasn’t been released yet, to use the latest React 19 changes you will have to manually update the React and React DOM packages.

To get up and running from nothing, first use npx create-react-app <appName>

Or if you’re a TypeScript legend, you can use the --template typescript flag: npx create-react-app <appName> --template typescript.

Update to the latest version of React and React DOM npm install --save-exact react@rc react-dom@rc

If you’re using TypeScript you also need to update the types. Once React 9s is released as stable you can install the type as usual from @types/react and @types/react-dom: package.json

{
  "dependencies": {
    "@types/react": "npm:types-react@rc",
    "@types/react-dom": "npm:types-react-dom@rc"
  },
  "overrides": {
    "@types/react": "npm:types-react@rc",
    "@types/react-dom": "npm:types-react-dom@rc"
  }
}

For more info on upgrading to React 19