import type { Bool, Float } from '@toreda/strong-types';
import type { Time } from '../time';
import { Timer } from '../timer';
import { TimerCallback } from './callback';
import { TimerCallbackGroup } from './callback/group';
import { TimerCallbackSync } from './callback/sync';
import type { TimerEventId } from './event/id';
import type { TimerOptions } from './options';
/**
 * Active timer with internal timing clock. Takes a callback to invoke
 * every timer trigger.
 *
 * @category Timers
 */
export declare class TimerActive {
    private _timerHandle;
    private readonly _checkIntervalMs;
    readonly _handlersBound: Bool;
    readonly lastIntervalEnd: Float;
    readonly limitDuration: Bool;
    readonly listeners: Record<TimerEventId, TimerCallbackGroup>;
    readonly paused: Bool;
    readonly running: Bool;
    readonly timeLimit: Time;
    readonly timeStart: Time;
    readonly timeStop: Time;
    constructor(options?: TimerOptions);
    getListenerGroup(id: TimerEventId): TimerCallbackGroup | null;
    on(id: TimerEventId, fn: TimerCallback | TimerCallbackSync): boolean;
    once(id: TimerEventId, fn: Timer | TimerCallbackSync): boolean;
    setTimeLimit(value: number | Time): boolean;
    bindHandlers(): void;
    unpause(): Promise<boolean>;
    pause(): Promise<boolean>;
    /**
     * Start the timer.
     * @returns
     */
    start(): Promise<boolean>;
    done(): Promise<boolean>;
    stop(): Promise<boolean>;
    executeCallbacks(eventId: TimerEventId): Promise<void>;
    reset(): void;
    onUpdate(): void;
}