/**
 * CPF/CNPJ Validator and Formatter
 * A TypeScript/JavaScript library for validating and formatting Brazilian CPF and CNPJ numbers
 *
 * CNPJ Format Support:
 * - Traditional numeric CNPJ (14 digits): XX.XXX.XXX/XXXX-XX
 * - New alphanumeric CNPJ format (effective July 2026):
 *   - 14 characters total
 *   - First 12 positions can contain letters and numbers
 *   - Last 2 positions (verification digits) remain numeric
 *   - Format: XX.XXX.XXX/XXXX-XX (can include letters)
 *   - Example: A1B2.C3D4.E5F6/G7H8-01
 *
 * The library supports both formats simultaneously, automatically detecting
 * which format is being used and applying the appropriate validation rules.
 */
/**
 * Removes all non-numeric characters from a string
 * @param value The string to clean
 * @returns A string containing only numbers
 */
export declare function cleanNumbers(value: string): string;
/**
 * Removes all non-alphanumeric characters from a string
 * @param value The string to clean
 * @returns A string containing only letters and numbers
 */
export declare function cleanAlphanumeric(value: string): string;
/**
 * Validates if a CPF number is valid
 * @param cpf The CPF number to validate (can be formatted or just numbers)
 * @returns True if the CPF is valid, false otherwise
 */
export declare function isValidCPF(cpf: string): boolean;
/**
 * Formats a CPF number with the standard mask (XXX.XXX.XXX-XX)
 * @param cpf The CPF number to format (can be formatted or just numbers)
 * @param maskMode Activates formatting gradually
 * @returns The formatted CPF or an empty string if invalid
 */
export declare function formatCPF(cpf: string, maskMode?: boolean): string;
/**
 * Removes any non-numeric characters from a CPF
 * @param cpf The CPF to clean
 * @returns A string containing only the CPF numbers
 */
export declare function cleanCPF(cpf: string): string;
/**
 * Checks if a CNPJ is in the new alphanumeric format
 * @param cnpj The cleaned CNPJ string
 * @returns True if the CNPJ contains letters, false otherwise
 */
export declare function isAlphanumericCNPJ(cnpj: string): boolean;
/**
 * Validates if a CNPJ number is valid (supports both numeric and alphanumeric formats)
 * @param cnpj The CNPJ number to validate (can be formatted or just numbers/letters)
 * @returns True if the CNPJ is valid, false otherwise
 */
export declare function isValidCNPJ(cnpj: string): boolean;
/**
 * Formats a CNPJ number with the standard mask (XX.XXX.XXX/XXXX-XX)
 * @param cnpj The CNPJ number to format (can be formatted or just numbers/letters)
 * @param maskMode Activates formatting gradually
 * @returns The formatted CNPJ or an empty string if invalid
 */
export declare function formatCNPJ(cnpj: string, maskMode?: boolean): string;
/**
 * Cleans a CNPJ by removing formatting characters
 * For numeric CNPJs: removes all non-numeric characters
 * For alphanumeric CNPJs: removes all non-alphanumeric characters
 * @param cnpj The CNPJ to clean
 * @returns A cleaned CNPJ string
 */
export declare function cleanCNPJ(cnpj: string): string;
/**
 * Validates if a document number is a valid CPF or CNPJ
 * @param document The document number to validate (can be formatted or just numbers/letters)
 * @returns True if the document is a valid CPF or CNPJ, false otherwise
 */
export declare function isValidDocument(document: string): boolean;
/**
 * Formats a document number as CPF or CNPJ based on its characteristics
 * @param document The document number to format (can be formatted or just numbers/letters)
 * @param maskMode Activates formatting gradually
 * @returns The formatted document or an empty string if invalid
 */
export declare function formatDocument(document: string, maskMode?: boolean): string;