A basic Nightwatch installation for Meteor will have the following directories and files installed.
/myapp
/myapp/.meteor/nightwatch.json
/client/main.html
/client/main.js
/client/main.css
/tests
/tests/nightwatch
/tests/nightwatch/assertions
/tests/nightwatch/commands
/tests/nightwatch/data
/tests/nightwatch/logs
/tests/nightwatch/pages
/tests/nightwatch/reports
/tests/nightwatch/screenshots
/tests/nightwatch/walkthroughs
/tests/nightwatch/walkthroughs/critical_path.js
/tests/nightwatch/globals.json