First you need to install all the dependencies, which will also build the application thanks to the postinstall hook:
npm install
And finally you need to run the express server:
npm run start
The app should be available at localhost:1234
To run the app in development mode, you need to install all the dependencies:
npm install
and run the development server
npm run start:dev
To run the unit tests
npm run test
To run the tests
npm run cypress:open