import { Timer } from './timer.js';
import { VirtualLogger } from './virtualLogger.js';
import { ZonedDateTime } from '@js-joda/core';
import '@js-joda/timezone';
/**
 * shutdownSignal
 */
export declare const shutdownSignal: {
    isShuttingDown: boolean;
};
/**
 * Utils
 */
export declare class Utils {
    static base64DecodeToHexString(base64String: string): string;
    static hexStringEncodeToBase64(hexString: string): string;
    static concatenate(num1: number, num2: number): number;
    static now(): ZonedDateTime;
    static zonedDateTime(datetime: string): ZonedDateTime;
    static secondsToHHmmss(seconds: number): string;
    static daysHoursMinutesSecondsToSeconds(days: number, hours: number, minutes: number, seconds: number): number;
    static secondsToDaysHoursMinutesSeconds(seconds: number): [number, number, number, number];
    private static readonly debounceMillis;
    static debounce<T extends (...args: any[]) => void>(func: T, delayMillis: number | undefined, accessoryName: string, log: VirtualLogger): ((...args: any[]) => void) | undefined;
    static delay(millis: number, accessoryName: string, log: VirtualLogger): Promise<unknown>;
    static mapToJson(map: Map<string, string>): string;
    static jsonToMap(json: string): Map<string, string>;
    /**
     * Get the field name
     */
    static proxiedPropertiesOf<TObj>(obj?: TObj): { [P in keyof TObj]?: P; };
    static required(field: number | string | string[] | undefined): boolean;
    static notEmpty(field: string | string[]): boolean;
    static isPercentage(value: number): boolean;
    static isDegrees(value: number): boolean;
    static isValidTransition(value: number): boolean;
    static isValidTimeout(value: number): boolean;
    static restoreRunningTimer(timer: Timer, cachedStartTime: string, cachedDuration: number, callback: () => void, accessoryName: string, log: VirtualLogger): void;
}