/** The minutes column offers 00, 05 … 55. */
export declare const MINUTE_STEP = 5;
/** Only the clock time of both dates counts; the calendar day is the consumer's concern. */
export declare const isBeforeMinTime: (time: Date, minTime?: Date) => boolean;
/** An hour is disabled when none of its minute cells reaches `minTime` (e.g. hour 12 for 12:57). */
export declare const isHourDisabled: (hour: number, minTime?: Date) => boolean;
export declare const isMinuteDisabled: (hour: number, minute: number, minTime?: Date) => boolean;
/**
 * Picking the `minTime` hour while the kept minutes fall before it (13:10 → hour 12 with minTime 12:35)
 * would land on a disabled cell, so the minutes move up to the first enabled cell (12:35).
 */
export declare const clampToMinTime: (time: Date, minTime?: Date) => Date;