type Mask = "sn" | "nanp";
export type FormatPhoneOptions = {
    mask?: "auto" | Mask;
};
/**
 * Formats a phone number according to Brazilian phone number patterns.
 *
 * @param {string|number} value - The phone number to format, either as a string or a number.
 * @param {Object} options - Optional formatting options.
 * @param {string} options.mask - The mask to apply for formatting the phone number.
 * @returns {string} The formatted phone number as a string.
 */
export declare const formatPhone: (value: string | number, options?: FormatPhoneOptions) => string;
export {};