/**
 * Formats a date using the Intl.DateTimeFormat API.
 *
 * @param date - The date to format.
 * @param locale - The locale to use.
 * @param options - Optional Intl.DateTimeFormatOptions.
 * @returns The formatted date string.
 */
export function formatDate(
    date: Date | string,
    locale: string,
    options?: Intl.DateTimeFormatOptions,
): string {
    const d = typeof date === 'string' ? new Date(date) : date;
    return new Intl.DateTimeFormat(locale, options).format(d);
}

/**
 * Formats a number as a currency string.
 *
 * @param amount - The amount to format.
 * @param currency - The ISO 4217 currency code.
 * @param locale - The locale to use.
 * @returns The formatted currency string.
 */
export function formatCurrency(amount: number, currency: string, locale: string): string {
    return new Intl.NumberFormat(locale, {
        style: 'currency',
        currency,
    }).format(amount);
}