/**
 * Shared timepicker time utility functions.
 * Used by both Elements and React implementations.
 * Only framework-agnostic functions belong here.
 */
/**
 * Returns true if the string matches the HH:MM format with valid hour/minute ranges.
 */
export declare const isValidTimeString: (value: string) => boolean;
/**
 * Parses an HH:MM string into zero-padded [hours, minutes] strings.
 * Returns null for empty or invalid values.
 */
export declare const parseTimeString: (value: string) => [string, string] | null;
/**
 * Converts an HH:MM string to total minutes since midnight.
 * Assumes a valid time string.
 */
export declare const timeToMinutes: (time: string) => number;