To install project you will need a firebase project.To create one follow:-https://firebase.google.com/docs/web/setup
Ensure basic password base authentication is enabled for your firebase project and update firebase database rules to read and write only for authenticated users
Replace all calls in the javascript files with 'Your firebase project url'->'To the project url of the created firebase project'
Replace all calls in the javascript files with 'Your api ket'->'To api key of the created firebase project'
Run the project using nodejs using command nodemon editorServer.js localhost 8000