/**
 * Intl API formatters for dates, numbers, currencies, and relative time.
 *
 * These are thin wrappers around the native Intl API with caching for performance.
 *
 * @module i18n/formatters
 */
import type { IntlFormatters } from './types.js';
/**
 * Default Intl formatters implementation.
 *
 * Uses native browser Intl API with caching for performance.
 *
 * @example
 * ```typescript
 * const formatters = createIntlFormatters();
 *
 * formatters.formatDate(new Date(), 'pt-BR', { dateStyle: 'long' });
 * // → "1 de janeiro de 2024"
 *
 * formatters.formatCurrency(1234.56, 'USD', 'en-US');
 * // → "$1,234.56"
 *
 * formatters.formatRelativeTime(yesterday, 'en-US');
 * // → "yesterday"
 * ```
 */
export declare function createIntlFormatters(): IntlFormatters;
/**
 * Clear all cached formatters.
 * Useful when locale changes or in testing.
 */
export declare function clearFormatterCache(): void;
/**
 * Common date format presets.
 */
export declare const DateFormats: {
    short: Intl.DateTimeFormatOptions;
    medium: Intl.DateTimeFormatOptions;
    long: Intl.DateTimeFormatOptions;
    full: Intl.DateTimeFormatOptions;
    shortTime: Intl.DateTimeFormatOptions;
    mediumTime: Intl.DateTimeFormatOptions;
    longTime: Intl.DateTimeFormatOptions;
    shortDateTime: Intl.DateTimeFormatOptions;
    mediumDateTime: Intl.DateTimeFormatOptions;
    longDateTime: Intl.DateTimeFormatOptions;
};
/**
 * Common number format presets.
 */
export declare const NumberFormats: {
    integer: Intl.NumberFormatOptions;
    decimal: Intl.NumberFormatOptions;
    percent: Intl.NumberFormatOptions;
    percentDecimal: Intl.NumberFormatOptions;
};
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