how to delete anonymous users that last signed in more than certain time from Firebase Authentication in NodeJS?

from Firebase Authentication, we have table like this, the providers can be email, google, facebook or anonymous

I need to delete all anonymous accounts that last signed in was more than last month. I need to query those anonymous accounts and then delete them all.

but I really have no idea how to query all anonymous account that last signed in was more than six months ago using Node JS admin SDK. is it possible? how to do that?

because there is a limit from firebase (100 million anonymous account) from the documentation in here. I may not hit that limit, but I think it is better If I can clean unused anonymous accounts by creating a cron job using cloud scheduler in cloud function

https://stackoverflow.com/questions/66830220/how-to-delete-anonymous-users-that-last-signed-in-more-than-certain-time-from-fi March 27, 2021 at 06:21PM