/**
 * Time segment
 */
type Segment = {
    hours: number;
    minutes: number;
    seconds: number;
    milliseconds: number;
};
/**
 * Time format:
 * - HH:mm (e.g. 00:00, 23:59)
 * - HH:mm:ss (e.g. 00:00:00, 23:59:59)
 * - HH:mm:ss.SSS (e.g. 00:00:00.000, 23:59:59.000)
 */
declare enum Format {
    /**
     * HH:mm (e.g. 00:00, 23:59)
     */
    HHmm = "HH:mm",
    /**
     * HH:mm:ss (e.g. 00:00:00, 23:59:59)
     */
    HHmmss = "HH:mm:ss",
    /**
     * HH:mm:ss.SSS (e.g. 00:00:00.000, 23:59:59.000)
     */
    HHmmssSSS = "HH:mm:ss.SSS"
}
type InputFormat = Format | keyof typeof Format;
/**
 * Try to guess time format
 * @param value Value to test
 * @returns format Time format or undefined
 */
declare const getFormat: (value: string) => Format | null;
/**
 * Check if passed value is a valid time string.
 * For instance: 10:00, 23:59:59, 23:59:59.000
 * @param value Value to check
 * @param [format] The format to validate value against. If not defined, try to guess the format
 * @returns value is valid.
 */
declare const isValid: (value: string, format?: InputFormat | null) => boolean;
/**
 * Get Local/UTC values segments of Date object or value string
 * @param value Valid date or a string in a format 10:00, 23:59:59 or 23:59:59.999
 * @param [isUTC=false] True to get UTC values, false to get Local values
 * @returns Segment
 */
declare const toSegment: (value: string | Date, isUTC?: boolean) => Segment;
/**
 * Format Date or Segment to Local Time string.
 * @param value A valid Date or Segment
 * @param [format='HH:mm'] Time format, one of 'HH:mm' | 'HH:mm:ss' | 'HH:mm:ss.SSS'
 * @returns A formatted time
 */
declare const format: (value: Segment | Date, format?: InputFormat) => string;
/**
 * Format Date or Segment to UTC Time string.
 * @param value A valid Date or Segment
 * @param [format='HH:mm'] Time format, one of 'HH:mm' | 'HH:mm:ss' | 'HH:mm:ss.SSS'
 * @returns A formatted time
 */
declare const utcFormat: (value: Segment | Date, format?: InputFormat) => string;
/**
 * Get Local Date object from value string or Segment.
 * @param value Value to parse, Segment or 'HH:mm' | 'HH:mm:ss' | 'HH:mm:ss.SSS'
 * @returns parsed date or invalid date
 */
declare const parse: (value: string | Segment) => Date;
/**
 * Get UTC Date object from value string or Segment.
 * @param value Value to parse, Segment or 'HH:mm' | 'HH:mm:ss' | 'HH:mm:ss.SSS'
 * @returns parsed date or invalid date
 */
declare const utcParse: (value: string | Segment) => Date;
/**
 * Add offset in milliseconds to the value
 * @param value the time
 * @param amount number of milliseconds to add
 * @returns new value
 */
declare const addOffset: (value: string, amount: number) => string;
/**
 * Subtract offset in milliseconds from the value
 * @param value the time
 * @param amount number of milliseconds to subtract
 * @returns new value
 */
declare const subOffset: (value: string, amount: number) => string;
export { Segment, Format, InputFormat, isValid, toSegment, format, utcFormat, addOffset, subOffset, getFormat, parse, utcParse };