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TypeScript Example

npx create-react-native-app -t with-typescript

TypeScript is a superset of JavaScript which gives you static types and powerful tooling in Visual Studio Code including autocompletion and useful inline warnings for type errors.

🚀 How to use

Creating a new project

• Install the CLI: npm i -g expo-cli
• Create a project: npx create-react-native-app -t with-typescript
• cd into the project

Adding TypeScript to existing projects

• Create a blank TypeScript config: touch tsconfig.json
• Run yarn start or npm run start to automatically configure TypeScript
• Rename files to TypeScript, .tsx for React components and .ts for plain typescript files

💡 You can disable the TypeScript setup in Expo CLI with the environment variable EXPO_NO_TYPESCRIPT_SETUP=1 expo start

📝 Notes

• Expo TypeScript guide