yarn install
yarn start

Then open http://localhost:1234 in a browser.

yarn build

The dist directory will contain the output files, with index.html as the entrypoint.

yarn deploy

This will run the above build task, update the gh-pages branch with the contents of the dist directory, and push to the remote origin.

If you get the error A branch named 'gh-pages' already exists, you may need to run the following script:

./node_modules/gh-pages/bin/gh-pages-clean.js