Setting up React-Native using Yarn and Typescript: A comprehensive guide

After working on my project with basic react-native and npm, I encountered a problem when needing to add a new feature at a later stage. This led me to the decision of restarting the build in order to fix coding mistakes and errors.

For this fresh start, I have chosen to use yarn instead of npm, and also incorporating typescript alongside React-Native. However, I am facing a challenge after installing yarn on my Windows laptop through the installer - I am unsure how to create a react-native app and integrate typescript into it.

Browsing through documentation and forums has not provided a clear answer on the proper setup for creating a react-native app using yarn with typescript on a Windows laptop. Can someone please guide me on how to accomplish this?

Answer №1

Here is the solution that worked for me:

Start by setting up your react-native application:

npx react-native init MyApp
cd MyApp

Next, add typescript to your project:

yarn add -D typescript @types/jest @types/react @types/react-native @types/react-test-renderer

Create a tsconfig.json file with the following content:

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "isolatedModules": true,
    "jsx": "react",
    "lib": ["es6"],
    "moduleResolution": "node",
    "noEmit": true,
    "strict": true,
    "target": "esnext"
  },
  "exclude": [
    "node_modules",
    "babel.config.js",
    "metro.config.js",
    "jest.config.js"
  ]
}

Add a jest.config.js file with the following configuration:

module.exports = {
  preset: 'react-native',
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node']
};

Make sure to rename your main file from App.js to App.tsx.

With these steps, you can customize the type rules in the configuration file as needed.

For more details, refer to the documentation at https://reactnative.dev/docs/typescript.

Note: Using

npx react-native init MyApp --template react-native-template-typescript
resulted in build errors, leading me to opt for the method outlined above.

Answer №2

It appears that you may have mistakenly executed $ apt install yarn In this case, please use $ sudo npm install --global yarn instead.

Next, attempt to reinstall your application using the npx command:

npx react-native init MyApp --template react-native-template-typescript

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