import { Logger } from 'homebridge';
import { IErrorDetail } from 'ts-interface-checker';
export declare const MS = 1000;
export declare function assertIsDefined<Type>(value: Type): asserts value is NonNullable<Type>;
export declare function assertIsNotUndefined<Type>(value: Type): asserts value is Exclude<Type, undefined>;
export declare function assertIsUndefined(value: unknown): asserts value is undefined;
export declare function assertIsString(value: unknown): asserts value is string;
export declare function assertIsNumber(value: unknown): asserts value is number;
export declare function assertIsBoolean(value: unknown): asserts value is boolean;
export declare function logError(log: Logger, when: string, err: unknown): void;
export declare function formatMilliseconds(ms: number, maxParts?: number): string;
export declare function formatSeconds(seconds: number, maxParts?: number): string;
export declare function formatList(items: string[]): string;
export declare function plural(count: number, noun: string | [string, string], showCount?: boolean): string;
export declare function columns(rows: string[][], separator?: string): string[];
export declare function deepMerge(...objects: object[]): object;
export declare function getValidationTree(errors: IErrorDetail[]): string[];
export declare function gcd(...values: number[]): number;
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