Method transaction

packages/firebase-database/index.ios.ts:480–505

(transactionUpdate: (currentData: object) => object, onComplete?: (error: FirebaseError, committed: boolean, finalResult: any) => void, applyLocally?: boolean)

	}

	transaction(transactionUpdate: (currentData: object) => object, onComplete?: (error: FirebaseError, committed: boolean, finalResult: any) => void, applyLocally?: boolean): Promise<any> {
		return new Promise((resolve, reject) => {
			this.native.runTransactionBlockAndCompletionBlockWithLocalEvents(
				(data) => {
					const newData = transactionUpdate(deserialize(data.value));
					data.value = serializeItems(newData);
					return FIRTransactionResult.successWithValue(data);
				},
				(error, commited, snapshot) => {
					if (error) {
						const err = FirebaseError.fromNative(error);
						onComplete?.(err, commited, null);
						reject(err);
					} else {
						const ss = DataSnapshot.fromNative(snapshot);
						onComplete?.(null, commited, ss);
						resolve({
							commited,
							snapshot: ss,
						});
					}
				},
				applyLocally || true
			);
		});
	}

	update(values: { [key: string]: any }, onComplete?: (error: FirebaseError) => void): Promise<void> {
		return new Promise((resolve, reject) => {