export interface TimeObject {
    hours: number;
    minutes: number;
    seconds?: number;
    milliseconds?: number;
}
export type TimeType = 'hours' | 'minutes' | 'seconds' | 'milliseconds';
export interface DSATimeUnitElement extends HTMLLIElement {
    dataset: {
        timetype: TimeType;
        timevalue: string;
    };
}
export declare function timeStringToObject(timeString: string): TimeObject | null;
export declare function timeObjectToString(timeObject: TimeObject): string;
export declare function setTimeStringValue(timeString: string, type: TimeType, newValue: string): string;
export declare function compareTimeStrings(timeStringA: string, timeStringB: string): 0 | 1 | -1;