Optional Readonly mergeChanges the behavior of a set() call to only replace the values specified in its data argument. Fields omitted from the set() call remain untouched.
Optional Readonly mergeChanges the behavior of set() calls to only replace the specified field paths. Any field path that is not specified is ignored and remains untouched.
It is an error to pass a SetOptions object to a set() call that is missing a value for any of the fields specified here.
Generated using TypeDoc
An options object that configures the behavior of
set()calls inDocumentReference,WriteBatchandTransaction. These calls can be configured to perform granular merges instead of overwriting the target documents in their entirety.