import { FetchStateAndError } from './common';
/**
 * Reduces list of fetch state to boolean
 * @param fetchStateList list of fetch states
 * @returns true if all fetch states are completed.
 */
export declare const isAllFetchCompleted: (fetchStateList: FetchStateAndError[]) => boolean;
/**
 * Reduces list of fetch state to single fetchState
 * @param fetchStateList list of fetch states
 * @return single fetchStateWithError
 */
export declare function reduceFetchState(fetchStateList: FetchStateAndError[]): FetchStateAndError;
/**
 * Combine multiple independent fetches (e.g. month / quarter / year for one report).
 * In-Progress if any fetch is in progress; Completed only when all complete; Error if
 * any failed once nothing is still in progress.
 *
 * Differs from {@link reduceFetchState} (requires all In-Progress for that state) and
 * from {@link reduceAllFetchState} (Error only when every fetch failed).
 */
export declare function reduceFetchStateParallelTimeframes(fetchStateList: FetchStateAndError[]): FetchStateAndError;
/**
 * Reduces list of fetch state to boolean
 * @param fetchStateList list of fetch states
 * @returns true if any fetch state is in progress.
 */
export declare const isAnyFetchInProgress: (fetchStateList: FetchStateAndError[]) => boolean;
/**
 * Reduces list of fetch state to boolean
 * @param fetchStateList list of fetch states
 * @returns true if any fetch state is completed.
 */
export declare const isAnyFetchCompleted: (fetchStateList: FetchStateAndError[]) => boolean;
/**
 * Reduces list of fetch state to single fetchState
 * @param fetchStateList list of fetch states
 * @returns If all fetch states are completed, then the fetch state comes back as completed, if any of them is errored out, then state comes as error.
 */
export declare const reduceAnyFetchState: (fetchStateList: FetchStateAndError[]) => FetchStateAndError;
/**
 * Reduces list of fetch state to single fetchState
 * @param fetchStateList list of fetch states
 * @returns If all fetch states are completed, then the fetch state comes back as completed, if all of them are errored out, then state comes as error.
 */
export declare const reduceAllFetchState: (fetchStateList: FetchStateAndError[]) => FetchStateAndError;
/**
 * Reduces list of fetch state to single fetchState
 * @param fetchStateList list of fetch states
 * @returns If any fetch state is completed, then the fetch state comes back as completed, if any of them is errored out, then state comes as error.
 */
export declare const reduceAnyCompletedFetchState: (fetchStateList: FetchStateAndError[]) => FetchStateAndError;