import { DateTime } from 'luxon';
/**
 * Parses a time-of-day string in `format` and applies it to `baseDay` (date part only).
 */
export declare function parseTimeOnDay(value: string | undefined, format: string, baseDay: DateTime): DateTime | null;
export declare function getTimePickerConstraintBounds(minTime: string | undefined, maxTime: string | undefined, format: string, baseDay: DateTime): {
    min: DateTime | null;
    max: DateTime | null;
};
export declare function isWithinTimePickerConstraints(candidate: DateTime, min: DateTime | null, max: DateTime | null): boolean;
export declare function hasActiveTimePickerConstraints(min: DateTime | null, max: DateTime | null): boolean;
/**
 * Whether the inclusive wall-clock range `[rangeStart, rangeEnd]` can intersect
 * inclusive constraint bounds `[min, max]` (either bound may be null = unbounded).
 */
export declare function timeOfDayRangeIntersectsInclusiveBounds(rangeStart: DateTime, rangeEnd: DateTime, min: DateTime | null, max: DateTime | null): boolean;