[firebase-firestore] FieldValue doesn't work inside the batch write

[gookhans]

example:

   firestore.batch().set(exampleDoc, {
            date: FieldValue.serverTimestamp()
        }) ...

This create the empty map object in the document like this: date: {}.
This problem exist in the all FieldValue methods on batch write. serverTimestamp, increment, arrayUnion.. and probably exist on GeoPoint.

it seems like, set() and update() method which are inside the batchwrite have different data-serialize stages compared to the normal set(), update() methods

[triniwiz]

Thanks, they seem to be using the wrong serialize