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Class WriteBatch (7.11.0) | Node.js client library

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A Firestore WriteBatch that can be used to atomically commit multiple write operations at once.

WriteBatch

constructor(firestore: Firestore);

Constructs a new instance of the WriteBatch class

protected readonly _firestore: Firestore;

commit(): Promise<WriteResult[]>;

Atomically commits all pending operations to the database and verifies all preconditions. Fails the entire write if any precondition is not met.

{Promise.<Array.

let writeBatch = firestore.batch();
let documentRef = firestore.doc('col/doc');

writeBatch.set(documentRef, {foo: 'bar'});

writeBatch.commit().then(() => {
  console.log('Successfully executed batch.');
});

create<AppModelType, DbModelType extends firestore.DocumentData>(documentRef: firestore.DocumentReference<AppModelType, DbModelType>, data: firestore.WithFieldValue<AppModelType>): WriteBatch;

Create a document with the provided object values. This will fail the batch if a document exists at its location.

A reference to the document to be created.

The object to serialize as the document.

{WriteBatch} This WriteBatch instance. Used for chaining method calls.

let writeBatch = firestore.batch();
let documentRef = firestore.collection('col').doc();

writeBatch.create(documentRef, {foo: 'bar'});

writeBatch.commit().then(() => {
  console.log('Successfully executed batch.');
});

delete(documentRef: firestore.DocumentReference<any, any>, precondition?: firestore.Precondition): WriteBatch;

Deletes a document from the database.

A reference to the document to be deleted.

A precondition to enforce for this delete.

{WriteBatch} This WriteBatch instance. Used for chaining method calls.

let writeBatch = firestore.batch();
let documentRef = firestore.doc('col/doc');

writeBatch.delete(documentRef);

writeBatch.commit().then(() => {
  console.log('Successfully executed batch.');
});

set<AppModelType, DbModelType extends firestore.DocumentData>(documentRef: firestore.DocumentReference<AppModelType, DbModelType>, data: firestore.PartialWithFieldValue<AppModelType>, options: firestore.SetOptions): WriteBatch;

set<AppModelType, DbModelType extends firestore.DocumentData>(documentRef: firestore.DocumentReference<AppModelType, DbModelType>, data: firestore.WithFieldValue<AppModelType>): WriteBatch;

update<AppModelType = firestore.DocumentData, DbModelType extends firestore.DocumentData = firestore.DocumentData>(documentRef: firestore.DocumentReference<AppModelType, DbModelType>, dataOrField: firestore.UpdateData<DbModelType> | string | firestore.FieldPath, ...preconditionOrValues: Array<{
        lastUpdateTime?: firestore.Timestamp;
    } | unknown | string | firestore.FieldPath>): WriteBatch;

Update fields of the document referred to by the provided [DocumentReference]DocumentReference. If the document doesn't yet exist, the update fails and the entire batch will be rejected.

The update() method accepts either an object with field paths encoded as keys and field values encoded as values, or a variable number of arguments that alternate between field paths and field values. Nested fields can be updated by providing dot-separated field path strings or by providing FieldPath objects.

A Precondition restricting this update can be specified as the last argument.

A reference to the document to be updated.

An object containing the fields and values with which to update the document or the path of the first field to update.

An alternating list of field paths and values to update or a Precondition to restrict this update.

{WriteBatch} This WriteBatch instance. Used for chaining method calls.

let writeBatch = firestore.batch();
let documentRef = firestore.doc('col/doc');

writeBatch.update(documentRef, {foo: 'bar'});

writeBatch.commit().then(() => {
  console.log('Successfully executed batch.');
});

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Last updated 2025-08-07 UTC.

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