export declare const EMPTY_REQUEST: {
    readonly state: "empty";
};
export type EmptyRequestState = {
    state: "empty";
};
export declare const LOADING_REQUEST: {
    readonly state: "loading";
};
export type LoadingRequestState = {
    state: "loading";
};
export type FailedRequestState = {
    state: "failed";
    err: Error;
};
export type SuccessRequestState<T> = {
    state: "success";
    data: T;
};
/**
 * Shows the state of an API request.
 *
 * Can be empty, loading, failed, or success
 */
export type RequestState<T> = EmptyRequestState | LoadingRequestState | FailedRequestState | SuccessRequestState<T>;
export declare function mapToRequestState<ResultT>(result?: ResultT, error?: Error): RequestState<ResultT>;