If you have yarn installed:
Run yarn.
Otherwise, run npm i.
This app also requires Node 8+. This is because it uses the Parcel Bundler. If you have NVM, simply type nvm use. Otherwise you will only be able to load the ./dist/index.html file in a browser directly.
To run the app in the browser, run yarn start.
You can also run the most recent distribution version by simply opening dist/index.html in a browser.
To run the tests once, run yarn test.
To run the tests in watch mode while developing, run yarn test:watch.
To run the tests once, run yarn build. This will update the ./dist directory. Simply open ./dist/index.html in any browser and the application should run.