The <iframe> approach is presently on hold. Follow the latest Universal Search developments at the mozilla/universal-search repository and on its Waffle.io board.

the iframe that we put inside the autocomplete dropdown

1. npm install
2. npm start
3. navigate to https://localhost:8080/

1. npm run build
2. find output in dist/

https://github.com/mozilla/universal-search-addon/blob/master/docs/API.md

1. Navigate to https://localhost:8080/
2. Show the debugger by running app.showDebugger() in the console
3. Enable event recording so that events can be replayed for debugging and performance tuning