/// <reference types="node" />
import { EventEmitter } from 'events';
import type TweetStream from './TweetStream';
/** Why an iteration ends: the stream was closed, or `error` has to be thrown */
declare type TweetStreamCombinerEnding = {
    error?: any;
};
export declare class TweetStreamEventCombiner<T> extends EventEmitter {
    private stream;
    private stack;
    private ending?;
    private onceNewEvent;
    constructor(stream: TweetStream<T>);
    /** Returns a new `Promise` that will `resolve` on next event (data, error or end of the stream). */
    nextEvent(): Promise<void>;
    /** Returns `true` if there's something in the stack. */
    hasStack(): boolean;
    /** Returns stacked data events, and clean the stack. */
    popStack(): T[];
    /** Returns why the iteration ends, once it has to. */
    getEnding(): TweetStreamCombinerEnding | undefined;
    /** Ends the iteration once the stack is empty. The first ending wins. */
    end(ending?: TweetStreamCombinerEnding): void;
    /** Cleanup all the listeners attached on stream. */
    destroy(): void;
    private onStreamData;
    private onStreamError;
    private onConnectionLost;
    private onReconnectLimitExceeded;
    private onStreamClosed;
}
export default TweetStreamEventCombiner;