import { ProgressPromise } from '@prezly/progress-promise';
export type AsyncProgressState<T> = {
    error?: undefined;
    loading: boolean;
    progress: number;
    value?: undefined;
} | {
    error: Error;
    loading: false;
    progress: number;
    value?: undefined;
} | {
    error?: undefined;
    loading: false;
    progress: number;
    value: T;
};
/**
 * ProgressPromise variant of react-use's useAsyncFn().
 * React hook that returns state and a trigger callback for a function
 * that returns a progress promise (or a regular promise).
 * @see https://streamich.github.io/react-use/?path=/story/side-effects-useasyncfn--docs
 */
export declare function useAsyncProgressFn<T>(fn: () => PromiseLike<T> | ProgressPromise<T> | T, initialState?: AsyncProgressState<T>): [AsyncProgressState<T>, () => ProgressPromise<T>];