Firefox "never remember history" disables IndexedDB

[alexelisenko]

Hello,

The "never remember history" privacy setting in Firefox disabled IndexedDB, which causes Dexie to throw an uncaught Error. Is there anyway to create a browser.storage.local wrapper for dexie to handle this user environment?

[dfahlander]

This issue has been up before (years ago), and solved. Does Dexie methods return a rejected promise (expected behavior) or does the code never reach the app code after Dexie instanciation/declaration? Which version of Dexie is it?

[jbarzegar]

Hello 👋 working on this project with @alexelisenko. We're on Dexie v 2.0.4 (latest). Dexie is behaving as expected. The Promise rejects, with an error message of: InvalidStateError A mutation operation was attempted on a database that did not allow mutations.

[dfahlander]

Thanks @jbarzegar!

@alexelisenko: You might try using fakeIndexedDB as a fallback for users that have the privacy setting on so that Dexie could function as expected.

Something like this would do:

if(isBrowserPrivacyOn) {
  Dexie.dependencies.indexedDB = require('fake-indexeddb');
  Dexie.dependencies.IDBKeyRange = require('fake-indexeddb/lib/FDBKeyRange');
}

Don't know if you can detect the privacy setting easily. Might need to try opening dexie first and catch the rejected promise and then open a new db after having applied fakeIndexeddb.

Anyone who has tried this is very welcome to give some feedback here in this issue!

[jbarzegar]

Will take a look! Problem is we have to persist to disk since we're storing application state for our extension. If the process dies we don't want our users to log back in etc :( Either way @dfahlander I appreciate your help and thoughts on the matter.

I'll make sure to update everyone when we find a suitable solution!