/**
 * cdigit
 *
 * @copyright 2018-2021 LiosK
 * @license (MIT OR Apache-2.0)
 */
import { Algo } from "./common";
/**
 * Verhoeff algorithm implementation
 *
 * Note: There is not a firm consensus on the direction (left to right or right
 * to left) in which a Verhoeff calculator scans numeric text to construct an
 * input digit sequence. This implementation is hard coded to read a string from
 * right to left and append the check digit at the rightmost position, which is
 * a consistent behavior with other popular implementations. Reverse the input
 * string before calling this class' methods if you need to interpret a string
 * from left to right.
 */
declare class Verhoeff implements Algo {
    name: string;
    longName: string;
    /** Verhoeff multiplication table */
    private d;
    /** Verhoeff permutation table */
    private p;
    /** Verhoeff inverse table */
    private inv;
    compute(num: string): string;
    generate(num: string): string;
    validate(num: string): boolean;
    parse(num: string): [string, string];
}
export declare const verhoeff: Verhoeff;
export {};