import { TimelineEvents } from './timeline';
import { AbstractCompositeTimeline } from './timeline/abstract-composite-timeline';
import { Timeline } from './timeline/timeline';
export interface GroupEvents<T extends Timeline> extends TimelineEvents<Group<T>> {
    completed: [event: {}, source: Group<T>];
    sought: [event: {
        from: number;
    }, source: Group<T>];
    updated: [event: {
        dt: number;
    }, source: Group<T>];
}
export declare class Group<T extends Timeline> extends AbstractCompositeTimeline<T> implements Timeline {
    private readonly eventEmitter;
    readonly on: <K extends keyof GroupEvents<T>>(eventName: K, handler: (...args: import("@akolos/event-emitter/build/union-to-intersection").UnionToIntersection<GroupEvents<T>[K]>) => void) => this;
    readonly off: <K extends keyof GroupEvents<T>>(eventName: K, handler: (...args: import("@akolos/event-emitter/build/union-to-intersection").UnionToIntersection<GroupEvents<T>[K]>) => void) => this;
    protected readonly emit: <K extends keyof GroupEvents<T>>(eventName: K, ...args: import("@akolos/event-emitter/build/union-to-intersection").UnionToIntersection<GroupEvents<T>[K]>) => this;
    constructor(timelines: T[]);
    protected _update(dt: number): void;
    protected _completed(): void;
    protected _start(): void;
    protected _stop(): void;
    protected _seek(from: number): void;
    private updateTimelines;
}