/**
 * Helper function to update useQueries cache optimistically.
 * In the current implementation it only resets the state for one specified query.
 * @internal
 *
 * @param queryKey - affected query.
 * @param updateCacheFn - function that updates the cache to the expected outcome.
 * @returns previous state, in case the mutation needs to be rolled back.
 */
export declare function runOptimisticMutation<T>(queryKey: string, updateCacheFn: (prevState: T) => T, cancelKeys?: string[]): Promise<{
    previousState?: T;
}>;
/**
 * Helper function to react to errors of an optimistically run mutation.
 * @internal
 *
 * @param queryKey - affected query.
 * @param error - API response error.
 * @param context - object containing the previousState. It is usually derived from `runOptimisticMutation`s return type.
 */
export declare function handleFailedOptimisticMutation<T>(queryKey: string, error: Error, context?: {
    previousState?: T;
}): Promise<void>;
/**
 * Helper function to react to a successful optimistical mutation.
 * @internal
 *
 * @param invalidQueryKeys - queries that have been optimistically updated and can now be refetched.
 * @param mutationKeys - mutation keys modifiying the same data, to prevent overwrites.
 */
export declare function handleSettledOptimisticMutation(invalidQueryKeys: string[], mutationKeys: string[]): Promise<void>;