bundle install
npm i -g yarn (if you don't have it already)
yarn install
bundle exec rails db:create (db steps just needed to make rails happy at boot, nothing stored in DB)
bundle exec rails db:migrate
bundle exec rspec
Should run the spec/system/basic_spec.rb file.
Use the following command in a pry session to see the JS errors
page.driver.browser.manage.logs.get(:browser)