import TypedEmitter from "typed-emitter";
import { ChatItem, ChatType, YoutubeId } from "./types/data";
type LiveChatEvents = {
    start: (liveId: string) => void;
    end: (reason?: string) => void;
    chat: (chatItem: ChatItem) => void;
    error: (err: Error | unknown) => void;
};
declare const LiveChat_base: new () => TypedEmitter<LiveChatEvents>;
/**
 * YouTubeライブチャット取得イベント
 */
export declare class LiveChat extends LiveChat_base {
    #private;
    liveId?: string;
    /**
     * @param id channelId, liveId, or handle of the stream to follow.
     * @param interval Minimum milliseconds between polls. This is a *floor*: YouTube states how often
     *   it wants to be polled (typically every 10s) and we honour whichever is slower. Upstream
     *   treated this value as a fixed rate and so polled ~10x faster than YouTube asks for, which is
     *   the quickest way to get an IP rate-limited.
     * @param chatType `"top"` (default) reads YouTube's filtered "Top chat"; `"live"` reads every
     *   message ("Live chat"). Default is `"top"` to match YouTube's own default and keep existing
     *   consumers' behavior unchanged.
     */
    constructor(id: YoutubeId, interval?: number, chatType?: ChatType);
    start(): Promise<boolean>;
    stop(reason?: string): void;
}
export {};