import { JSError } from "./_util";
export declare const noMore: {};
export declare const more: {};
export interface Event {
    hasValue: boolean;
    isNext: boolean;
    isInitial: boolean;
    isError: boolean;
    isEnd: boolean;
}
export declare function isEvent(x: any): x is Event;
export declare class Next<T> implements Event {
    value: T;
    hasValue: boolean;
    isNext: boolean;
    isInitial: boolean;
    isError: boolean;
    isEnd: boolean;
    constructor(value: T);
}
export declare function isNext<T>(e: Event): e is Next<T>;
export declare class Error implements Event {
    error: JSError;
    hasValue: boolean;
    isNext: boolean;
    isInitial: boolean;
    isError: boolean;
    isEnd: boolean;
    constructor(error: JSError);
}
export declare function isError(e: Event): e is Error;
export declare class End implements Event {
    hasValue: boolean;
    isNext: boolean;
    isInitial: boolean;
    isError: boolean;
    isEnd: boolean;
}
export declare function isEnd(e: Event): e is End;