Build Elements
To be framework agnostic you gotta build Chatness elements bundle from your own end.
Make sure to have followed all the setup stage and included the Firebase SDK
npm run build:elements
This command will build the content from src/app/components as well as needed styles as custom elements (web components) into a single js bundle called elements.js.
Afterwards all you gotta do is to include this bundle in your framework of choice.
You can execute npx serve dist/elements to see the generated result.
Check dist/elements/index.html for further details.