export interface TimeValue {
    hours: number;
    minutes: number;
    seconds: number;
}
export declare const pad: (n: number) => string;
export declare const parseTimeString: (input: string) => TimeValue | null;
export declare const formatTime: (value: TimeValue, format12: boolean, showSeconds: boolean) => string;
export declare const dateToTime: (date: Date) => TimeValue;
export declare const timeToDate: (value: TimeValue, base?: Date) => Date;
export declare const normalizeValue: (raw: Date | string | TimeValue | null | undefined) => TimeValue | null;
export declare const buildRange: (start: number, end: number, step: number) => number[];