/**
 * Utility functions for currency formatting
 */
/**
 * Formats a number as a currency string
 * @param value The number to format
 * @param currency The currency code (default: 'USD')
 * @param locale The locale to use for formatting (default: 'en-US')
 * @returns The formatted currency string
 */
export declare function formatCurrency(value: number, currency?: string, locale?: string): string;