Firebase export / import database indexes

firebase-indexes-import.md

this will select staging and export indexes

firebase use default
firebase firestore:indexes > firestore.indexes.json

then we need to import them in production, so we don't need to create all of them manually (could be 20+ and it takes some time)

firebase use production
firebase deploy --only firestore:indexes

Make sure firebase.json is pointing to the correct file firestore.indexes.json at field firestore.indexes