Chrome extension Service worker "ReferenceError : XMLHttpRequest is not defined" Firestore

[rendomnet]

I'm using Firebase Firestore inside my Chrome extension background script(Version 3 Service worker) and as I understood it uses XMLHttpRequest which background scripts are not supporting.

@firebase/firestore: Connection WebChannel transport errored

Right now it gives this error.
ReferenceError : XMLHttpRequest is not defined

But Firebase Realtime Database is working

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[rendomnet]

Firebase Firestore is not working
Firebase Database is working.

[jbalidiong]

Hi @rendomnet, thanks for reaching out. A reproducible example would be ideal, but in the meantime, could you share a few more details and logs with logging enabled?

[rendomnet]

@jbalidiong Chrome Extension Manifest V3 are using Service workers
Workers no longer provide XMLHttpRequest, but instead support the more modern [fetch()]
So because of this Firebase Firestore stopped working.
But Google is forcing Extension authors to move to the new Manifest V3 which is no longer provide XMLHttpRequest, that Firestore is using.

https://developer.chrome.com/docs/extensions/mv3/migrating_to_service_workers/#workers

[jbalidiong]

If you're using v8, it uses XMLHttpRequest instead of fetch which is not available in the service worker. Using v9 web SDK will let you use Firebase inside the service worker. Would you mind trying to update the SDK version you're using and see if the issue will persist?