import EventBus from '../EventBus';
import { EasingFunction } from '../easing';
interface Config {
    from?: number;
    to?: number;
    duration?: number;
    ease?: EasingFunction;
    loop?: boolean;
}
declare type EventTypes = 'start' | 'stop' | 'reverse' | 'update' | 'end';
interface TweenOn<T> {
    (event: EventTypes, listener: () => void): T;
    (event: 'update', listener: (value: number, prevValue: number) => void): T;
}
export default class Tween {
    static DEFAULT_CONFIG: {
        from: number;
        to: number;
        duration: number;
        ease: (pos: any) => any;
        loop: boolean;
    };
    private stopRunningFrame?;
    bus: EventBus<EventTypes>;
    state: {
        reversed: boolean;
        progress: number;
        stoped: boolean;
        config: {
            from: number;
            to: number;
            duration: number;
            ease: (pos: any) => any;
            loop: boolean;
        };
    };
    constructor(config?: Config);
    on: TweenOn<this>;
    off: (event: EventTypes, listener: Function) => this;
    config: (config?: Config) => this;
    start: () => this;
    restart: () => this;
    reset: () => this;
    stop: () => this;
    reverse: () => this;
    progress: (progress: number) => this;
    value: (progress?: number) => number;
    isEnded: (progress?: number) => boolean;
}
export {};