import type { Mutable } from '../mutable';
import type { Time } from '../time';
import type { Timer } from '../timer';
/**
 * @category Timers
 */
export declare class TimerPassive implements Timer {
    running: boolean;
    readonly interval: Mutable<number>;
    readonly lastTrigger: Mutable<number>;
    readonly triggerLimit: Mutable<number>;
    timeStart: Time;
    constructor();
    /**
     * Start timer using the current time. No effect if timer is running.
     * @returns		Whether timer started successfully.
     */
    start(): boolean;
    /**
     * Stop current timer. No effect if timer is not running.
     * @returns		Whether timer stopped succesfully.
     */
    stop(): boolean;
    trigger(): void;
    onUpdate(): void;
    reset(): void;
}