export declare const hours: string[];
export declare const minutes: string[];
export declare const seconds: string[];
export declare const transformTimeWithSeconds: (time: string) => string;
export declare const isLegalTimeString: ({ time, onlyHour, }: {
    time: string;
    onlyHour?: boolean | undefined;
}) => boolean;
export declare const extractHMSFromTime: (time?: string | null) => {
    hour: string | null;
    minute: string | null;
    second: string | null;
};
export declare const isTimeAfter: (t1?: string | null, t2?: string | null) => boolean | "" | null;
export declare const isTimeBefore: (t1?: string | null, t2?: string | null) => boolean | "" | null;