React Navigation 4

How to / Third Party Tooling
1

Trying to use React Navigation 4 based on a tutorial released last year or so.

npm install react-navigation
expo install react-native-gesture-handler react-native-reanimated react-native-screens react-native-safe-area-context @react-native-community/masked-view
npm install react-navigation-stack @react-native-community/masked-view
npm start

I get the error :

Opening DevTools in the browser... (press shift-d to disable)
Error: React Native is not installed. Please run `npm install` in your project directory.
Couldn't start project. Please fix the errors and restart the project.
Error: Couldn't start project. Please fix the errors and restart the project.
    at startExpoServerAsync (/@expo/xdl@57.9.1/src/Project.ts:2080:11)
    at Object.startAsync (/@expo/xdl@57.9.1/src/Project.ts:2397:5)
    at action (/usr/local/lib/node_modules/expo-cli/src/commands/start.ts:163:3)
    at /usr/local/lib/node_modules/expo-cli/src/commands/start.ts:334:16
    at Command.<anonymous> (/usr/local/lib/node_modules/expo-cli/src/exp.ts:85:7)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the @ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

How can I solve this ?

3

I got this solved by npm install