import type { Precision } from './shared.types.js';
import type { CalendarType } from '../../forms/calendar/types/calendarConfiguration.js';
import type { DateRangeSelectorValueType } from '../../forms/date-time-range-picker/types.js';
import type { _TimeOffset, _TimeOffsetValue, Timeframe, TimeValue } from '../types/time.js';
/**
 * Compares two given timevalue objects with each other
 */
export declare function isEqualTimeValue(tv1: TimeValue | string | null, tv2: TimeValue | string | null): boolean;
/**
 * Compares two given RangeSelection objects with each other
 */
export declare function isEqualRangeSelection(tf1: DateRangeSelectorValueType, tf2: DateRangeSelectorValueType): boolean;
/**
 * Typeguard to see if time offset is simple, so not an object.
 * @internal
 */
export declare function isSimpleTimeOffset(offset: _TimeOffset): offset is _TimeOffsetValue;
/**
 * Typeguard function that will check if the date is a date range.
 * @internal
 */
export declare function isTimeframe(date: unknown, type: CalendarType): date is Partial<Timeframe> | Timeframe;
/**
 * Typeguard function that will check if the date is TimeValue, it has absoluteDate, value and type.
 * @internal
 */
export declare function isTimeValue(value: unknown): value is TimeValue;
/**
 * Typeguard to check if a given timeframe is complete, meaning it has both `from` and `to` properties.
 * @internal
 */
export declare function isFullTimeframe(timeframe?: unknown): timeframe is Timeframe;
/**
 * Typeguard to check if a given object is a partial timeframe. So either from or to are missing.
 * @internal
 */
export declare function isPartialTimeframe(timeframe?: unknown): timeframe is Partial<Timeframe>;
/**
 * Formatter that gets the formatted time value strings.
 * @internal
 */
export declare function getFormattedTimeValue(timeValue: TimeValue | null, precision?: Precision, showTimeOnly?: boolean): string;
/**
 * Gets the formatted min and max values that are used in the translated messages.
 * @internal
 */
export declare function getFormattedMinMax(min?: string, max?: string, precision?: Precision): {
    min: string;
    max: string;
};
/**
 * Merges a partial range value into the current state value.
 * - Only keys present in `patch` are updated; absent keys keep their current value.
 * - A `null` value in `patch` explicitly clears that key.
 * - When the current state is `null`, the base defaults to `{ from: null, to: null }`.
 * @internal
 */
export declare function mergeRangeValue(current: null | {
    from: TimeValue | null;
    to: TimeValue | null;
}, patch: Partial<{
    from: TimeValue | null;
    to: TimeValue | null;
}>): {
    from: TimeValue | null;
    to: TimeValue | null;
};