import "../_dnt.polyfills.js";
import { Notifier } from "../util/notifier.js";
export declare class Timeline {
    current: number;
    extend(): number;
}
export declare class Receipt {
    ready: boolean;
    novel: boolean;
    nextTime: number;
    eventSources: Set<EventSource>;
    _finalized: Notifier;
    finalized(): Promise<void>;
    setReady(ready: boolean): void;
    setNovel(novel: boolean): void;
    setNextTimeFrom(receipt: Receipt): void;
    setNextTime(time: number): void;
    setFrom(receipt: Receipt): void;
    bind(source: EventSource): void;
}
export declare class EventSource {
    readonly timeline: Timeline;
    receipts: Set<Receipt>;
    constructor(timeline: Timeline);
    push(): number;
    finish(): void;
}