import { type Subtract } from 'type-fest';
import { type LocaleOptions } from '../locale.js';
/**
 * Names of all months in English. Don't use this for strings shown to the user, instead use
 * {@link getMonthNames}.
 *
 * @category Unit
 */
export declare enum MonthName {
    January = "january",
    February = "february",
    March = "march",
    April = "april",
    May = "may",
    June = "june",
    July = "july",
    August = "august",
    September = "september",
    October = "october",
    November = "november",
    December = "december"
}
/**
 * All English month names in order.
 *
 * @category Unit
 */
export declare const orderedMonthNames: readonly [MonthName.January, MonthName.February, MonthName.March, MonthName.April, MonthName.May, MonthName.June, MonthName.July, MonthName.August, MonthName.September, MonthName.October, MonthName.November, MonthName.December];
/**
 * A type for all valid month numbers. (1-12)
 *
 * @category Unit
 */
export type MonthNumber = 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12;
/**
 * A type for all valid month indexes. (0-11)
 *
 * @category Unit
 */
export type MonthIndex = Subtract<MonthNumber, 1>;
/**
 * Bounds for valid month numbers.
 *
 * @category Internal
 */
export declare const monthNumberBounds: {
    readonly min: 1;
    readonly max: 12;
};
/**
 * A type for all valid days in a month. (1-31)
 *
 * @category Unit
 */
export type DayOfMonth = 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;
/**
 * Bounds for valid day of the month numbers.
 *
 * @category Internal
 */
export declare const dayOfMonthBounds: {
    readonly min: 1;
    readonly max: 31;
};
/**
 * Gets all month names in various formats with the given locale. Defaults to the current user's
 * locale.
 *
 * @category Language
 */
export declare function getMonthNames(options?: Readonly<LocaleOptions>): {
    long: {
        numbered: Record<MonthNumber, string>;
        keyed: Record<MonthName, string>;
        indexed: Record<0 | 5 | 3 | 8 | 1 | 2 | 4 | 6 | 7 | 9 | 10 | 11, string>;
    };
    short: {
        numbered: Record<MonthNumber, string>;
        keyed: Record<MonthName, string>;
        indexed: Record<0 | 5 | 3 | 8 | 1 | 2 | 4 | 6 | 7 | 9 | 10 | 11, string>;
    };
    narrow: {
        numbered: Record<MonthNumber, string>;
        keyed: Record<MonthName, string>;
        indexed: Record<0 | 5 | 3 | 8 | 1 | 2 | 4 | 6 | 7 | 9 | 10 | 11, string>;
    };
};