Install yarn using your favorite package manager.
Once it's ready, navigate to the root of the project folder and install the project's dependencies by running:
$ yarn install
After that, you can execute your local development server by running:
$ yarn run server
Navigate to http://localhost:8080/ to view the app.
$ yarn test
To make the project go live, enter the following commands:
$ yarn add firebase-tools
$ yarn run build
$ firebase-tools deploy
This should be done very carefully, once we start having real users.