CONTRIBUTING.md

setup

$ nvm use # or use the node version specified in .nvmrc
$ yarn
$ yarn wpt:init
$ yarn build

tests

To run web-platform-test make sure you've followed https://web-platform-tests.org/running-tests/from-local-system.html#system-setup

$ yarn test
$ yarn test:wpt:jsdom
$ yarn test:wpt:browser

To learn more about the test architecture see [tests/README.md]