Offline support for getting document data

[morzel85]

I can get document data this way:

const { snapshot } = await FirebaseFirestore.getDocument({
  reference: 'someDocPathHere',
});

but when the app is offline it will give me such error: FirebaseError: Failed to get document because the client is offline.

Is there a way to obtain most recently used document data (assume that I can preload the docs while being online)?
Can offline work cross-platform: on Web, Android and iOS?

Searching for "offline" on https://capawesome.io/plugins/firebase/cloud-firestore/ doesn't give me anything.
For "persistence" I only get "clearPersistence".

[robingenz]

Thank you for your question! Offline persistence (https://firebase.google.com/docs/firestore/manage-data/enable-offline) is not yet supported by the Capacitor Firebase Firestore plugin. Feel free to create a feature request. This should be easy to implement.

[rafal-castor]

hey, @robingenz do you mean that offline persistence is not enabled for web only, or for both web and native platforms?

[robingenz]

It's enabled by default on Android and iOS, see Firebase docs.

[morzel85]

So the gap here is just adding offline option switch for Web to wrapper configuration, and the await FirebaseFirestore.getDocument should just work for Android and iOS?

[robingenz]

Yes, but we should add this option to Android and iOS too in case someone wants to disable it.

[morzel85]

Issue added: #715