import { Logger } from 'log4js';
import { AsyncOrSync } from 'ts-essentials';
export declare class TaskScheduler {
    private name;
    private logger;
    private task;
    private updatePeriodMs;
    private updateRetryPeriodMs;
    private _timer?;
    private preventNewTimer;
    constructor(name: string, logger: Logger, task: () => AsyncOrSync<void>, updatePeriodMs: number, updateRetryPeriodMs: number, startImmediately?: boolean);
    reinitializeTaskScheduler(): void;
    private executeTask;
    clearTimer(): void;
    setTimer(delay: number): void;
    releaseResources(): void;
}