commitId

The commit ID associated with this query result, if any.

This ID uniquely identifies the commit in which this change was accepted into the local store. The commit ID is available for all query results involving insertions, updates, or deletions. This ID can be used to track whether a local change has been synced to other peers.

For write transactions, the commit ID is only available after the transaction has been successfully committed. Queries executed within an uncommitted transaction will not have a commit ID.