Method update

packages/firebase-firestore/index.d.ts:205–205

(documentRef: IDocumentReference<T>, data: Partial<{ [K in keyof T]: T[K] | IFieldValue }>)

	set<T extends DocumentData = DocumentData>(documentRef: IDocumentReference<T>, data: T, options?: SetOptions): IWriteBatch;

	update<T extends DocumentData = DocumentData>(documentRef: IDocumentReference<T>, data: Partial<{ [K in keyof T]: T[K] | IFieldValue }>): IWriteBatch;

	update<T extends DocumentData = DocumentData, K extends keyof T = string>(documentRef: IDocumentReference<T>, field: K | IFieldPath, value: T[K] | IFieldValue, moreFieldAndValues: any[]): IWriteBatch;
}