import { Unit, Options, Widget, Fun, Action, IOWidget } from '../shared/widget';
export declare type HttpResult<a> = ({
    kind: "result";
    value: a;
} | {
    kind: "unauthorized";
} | {
    kind: "failed";
}) & {
    status: number;
};
export declare type LoadedAsyncState<a> = {
    kind: "loaded";
    value: a;
};
export declare type LoadingAsyncState<a> = {
    kind: "loading";
    value?: a;
};
export declare type AsyncState<a> = LoadedAsyncState<a> | {
    kind: "unloaded";
} | ((LoadingAsyncState<a> | {
    kind: "connection-error";
} | {
    kind: "unauthorized";
    status: number;
} | {
    kind: "failed";
    status: number;
}) & {
    p: Fun<Unit, Promise<HttpResult<a>>>;
});
export interface AsyncOptions<a> extends Options {
    loading?: IOWidget<LoadingAsyncState<a>, never>;
    connectionError?: Widget<never>;
    unauthorizedError?: Widget<Action<AsyncState<a>>>;
    otherError?: Widget<Action<AsyncState<a>>>;
    unloaded?: Widget<Action<AsyncState<a>>>;
}
export declare let async: <a>(w: IOWidget<a, Action<AsyncState<a>>>, options?: AsyncOptions<a> | undefined) => (s0: AsyncState<a>) => Widget<Action<AsyncState<a>>>;
export declare let unloadedAsyncState: <a>() => AsyncState<a>;
export declare let unauthorizedAsyncState: <a>(status: number) => AsyncState<a>;
export declare let errorAsyncState: <a>(status: number) => AsyncState<a>;
export declare let loadedAsyncState: <a>(v: a) => AsyncState<a>;
export declare let loadingAsyncState: <a>(p: Fun<Unit, Promise<HttpResult<a>>>, old_value?: a | undefined) => AsyncState<a>;