Method update

packages/firebase-database/common.ts:50–50

(values: { [key: string]: any }, onComplete?: undefined | ((error: FirebaseError | null) => void))

	setWithPriority(newVal: any, newPriority: string | number | null, onComplete?: undefined | ((error: FirebaseError | null) => void)): Promise<void>;
	transaction(transactionUpdate: (currentData: object) => object | undefined, onComplete?: undefined | ((error: FirebaseError | null, committed: boolean, finalResult: IDataSnapshot) => void), applyLocally?: undefined | false | true): Promise<TransactionResult>;
	update(values: { [key: string]: any }, onComplete?: undefined | ((error: FirebaseError | null) => void)): Promise<void>;
}

export interface IDataSnapshot {