interface FormattedPhoneNumber {
    e164: string;
    international: string;
}
/**
 * Parses and formats a phone number into E.164 and international formats.
 * @param phone - The phone number string.
 * @param defaultCountry - Default country code (default 'US').
 * @returns Object with `e164` and `international` strings, or null if invalid.
 */
declare const formatPhone: (phone: string, defaultCountry?: string) => FormattedPhoneNumber | null;

export { formatPhone };