@date-vir/duration/dist/units/month.js

Durations units an utils for date-vir.

import { userLocale } 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 var MonthName;
(function (MonthName) {
    MonthName["January"] = "january";
    MonthName["February"] = "february";
    MonthName["March"] = "march";
    MonthName["April"] = "april";
    MonthName["May"] = "may";
    MonthName["June"] = "june";
    MonthName["July"] = "july";
    MonthName["August"] = "august";
    MonthName["September"] = "september";
    MonthName["October"] = "october";
    MonthName["November"] = "november";
    MonthName["December"] = "december";
})(MonthName || (MonthName = {}));
/**
 * All English month names in order.
 *
 * @category Unit
 */
export const orderedMonthNames = [
    MonthName.January,
    MonthName.February,
    MonthName.March,
    MonthName.April,
    MonthName.May,
    MonthName.June,
    MonthName.July,
    MonthName.August,
    MonthName.September,
    MonthName.October,
    MonthName.November,
    MonthName.December,
];
/**
 * Bounds for valid month numbers.
 *
 * @category Internal
 */
export const monthNumberBounds = {
    min: 1,
    max: 12,
};
/**
 * Bounds for valid day of the month numbers.
 *
 * @category Internal
 */
export const dayOfMonthBounds = {
    min: 1,
    max: 31,
};
/**
 * Gets all month names in various formats with the given locale. Defaults to the current user's
 * locale.
 *
 * @category Language
 */
export function getMonthNames(options = {}) {
    return {
        long: getAbbreviatedMonthNames('long', options),
        short: getAbbreviatedMonthNames('short', options),
        narrow: getAbbreviatedMonthNames('narrow', options),
    };
}
function getAbbreviatedMonthNames(abbreviation, options) {
    const formatter = new Intl.DateTimeFormat(options.locale || userLocale, {
        month: abbreviation,
    });
    const numbered = {};
    const keyed = {};
    const indexed = {};
    for (const [i, orderedMonthName,] of orderedMonthNames.entries()) {
        const day = formatter.format(new Date(2020, i, 1));
        numbered[(i + 1)] = day;
        keyed[orderedMonthName] = day;
        indexed[i] = day;
    }
    return {
        numbered,
        keyed,
        indexed,
    };
}