import { type LocaleOptions } from '../locale.js';
import { type RoundOptions } from '../round-options.js';
import { type DurationUnit } from './duration-unit.js';
/**
 * All date units supported by date-vir. These are the singular versions of {@link DurationUnit}.
 *
 * @category Unit
 */
export declare enum DateUnit {
    Year = "year",
    Month = "month",
    Week = "week",
    Day = "day",
    Hour = "hour",
    Minute = "minute",
    Second = "second",
    Millisecond = "millisecond"
}
/**
 * Options for {@link getDateUnitString}.
 *
 * @category Internal
 */
export type DurationUnitStringOptions = {
    unit: DurationUnit | DateUnit;
    /** The count of the given unit. */
    count: number;
    /**
     * If `true`, abbreviates the unit name.
     *
     * @default false
     */
    abbreviate?: boolean | undefined;
} & LocaleOptions & RoundOptions;
/**
 * Gets the count and name of the requested unit.
 *
 * @category Language
 */
export declare function getDateUnitString(options: Readonly<DurationUnitStringOptions>): string;
/**
 * All {@link DateUnit} values that are zero indexed (start at 0, like seconds).
 *
 * @category Internal
 */
export declare const zeroIndexedDateUnits: readonly [DateUnit.Year, DateUnit.Hour, DateUnit.Minute, DateUnit.Second, DateUnit.Millisecond];
/**
 * All {@link DateUnit} values that are one indexed (start at 1, like days of a month).
 *
 * @category Internal
 */
export declare const oneIndexedDateUnits: readonly [DateUnit.Month, DateUnit.Week, DateUnit.Day];
/**
 * All {@link DateUnit} values in an array ordered from smallest to largest.
 *
 * @category Internal
 */
export declare const orderedDateUnit: readonly [DateUnit.Millisecond, DateUnit.Second, DateUnit.Minute, DateUnit.Hour, DateUnit.Day, DateUnit.Week, DateUnit.Month, DateUnit.Year];
/**
 * A type for all valid hour numbers. (0-23)
 *
 * @category Unit
 */
export type Hour = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23;
/**
 * A type for all valid minute numbers. (0-59)
 *
 * @category Unit
 */
export type Minute = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59;
/**
 * A type for all valid second numbers. (0-59)
 *
 * @category Unit
 */
export type Second = Minute;
/**
 * Bounds for valid hour numbers.
 *
 * @category Internal
 */
export declare const hourBounds: {
    min: 0;
    max: 23;
};
/**
 * Bounds for valid minute numbers.
 *
 * @category Internal
 */
export declare const minuteBounds: {
    min: 0;
    max: 59;
};
/**
 * Bounds for valid second numbers.
 *
 * @category Internal
 */
export declare const secondBounds: {
    min: 0;
    max: 59;
};
/**
 * Bounds for valid millisecond numbers.
 *
 * @category Internal
 */
export declare const millisecondsBounds: {
    min: number;
    max: number;
};