Navigate to the root of the root-config, react-app, and angular-app folders and run the command

$ npm install

• Navigate to the angular-app folder and run the below command

  $ npm run serve:single-spa:angular-app

• Navigate to the react-app folder and run the below command

  $ npm start

• Navigate to the root-config folder and run the below command

  $ npm start

  In the browser open the application at http://localhost:9000

  Now in the top navigation bar click on React, you will be routed to the React app, on click of Angular you will be redirected to angular app

  http://localhost:9000/react -> React App

  http://localhost:9000/angular/ -> Angular App