datezone/dist/output/ordinal.pub.js

A lightweight and comprehensive date and timeZone utility library for JavaScript.

import { getCachedNumberFormat } from "./number-format-cache.js";
const ordinalSuffixes = {
    de: { other: "." },
    en: { few: "rd", one: "st", other: "th", two: "nd" },
    es: { other: "º" }, // Spanish uses º for ordinals
    fr: { one: "er", other: "e" }, // German uses period
    it: { one: "º", other: "º" }, // Italian
    nl: { other: "e" }, // Portuguese
    pt: { one: "º", other: "º" }, // Dutch
    // Languages without suffixes (ru, ja, zh, etc.) are omitted and will return empty string
};
const pluralRulesCache = new Map();
function getPluralRules(locale) {
    if (!pluralRulesCache.has(locale)) {
        try {
            pluralRulesCache.set(locale, new Intl.PluralRules(locale, { type: "ordinal" }));
        }
        catch {
            // Fall back to English for invalid locales
            pluralRulesCache.set(locale, new Intl.PluralRules("en", { type: "ordinal" }));
        }
    }
    return pluralRulesCache.get(locale);
}
function getOrdinalSuffix(locale, rule) {
    // Try exact locale first
    if (ordinalSuffixes[locale]?.[rule]) {
        return ordinalSuffixes[locale][rule];
    }
    // Try language part of locale (e.g., 'en' from 'en-US')
    const language = locale.split("-")[0];
    if (language && language !== locale && ordinalSuffixes[language]?.[rule]) {
        return ordinalSuffixes[language][rule];
    }
    // Fall back to empty string for unsupported locales
    return "";
}
/**
 * Format ordinal.
 *
 * @param number - The number to format.
 * @param locale - The locale to use.
 * @returns The ordinal suffix.
 * @see https://datezone.dev/docs/reference/ordinal#formatordinal
 */
export function formatOrdinal(number, locale = "en") {
    const pr = getPluralRules(locale);
    // For unsupported locales, use Western numerals
    const numberingSystem = ["ar", "fa", "ur"].includes(locale)
        ? "latn"
        : undefined;
    const nf = getCachedNumberFormat(locale, { numberingSystem });
    const rule = pr.select(number);
    const suffix = getOrdinalSuffix(locale, rule);
    return `${nf.format(number)}${suffix}`;
}
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