Method update

packages/firebase-firestore/index.ios.ts:900–911

(field: any, value?: any, moreFieldsAndValues?: any)

	update(data: Partial<{ [K in keyof T]: FieldValue | T[K] }>): Promise<void>;
	update(field: FieldPath | keyof T, value: any, moreFieldsAndValues: any[]): Promise<void>;
	update(field: any, value?: any, moreFieldsAndValues?: any): Promise<void> {
		return new Promise((resolve, reject) => {
			const data = createDictionary(field, value, moreFieldsAndValues);
			this._native.updateDataCompletion(data as any, (error) => {
				if (error) {
					reject(FirebaseError.fromNative(error));
				} else {
					resolve();
				}
			});
		});
	}

	toJSON() {
		return {