nif-dni-nie-cif-validation/dist/nif/naturalPersonNif/shared.js

Validate NIF, DNI, NIE and CIF documents easily.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isValidDniLetter = exports.DNI_CONTROL_LETTERS = void 0;
exports.DNI_CONTROL_LETTERS = "TRWAGMYFPDXBNJZSQVHLCKE";
/**
 * Checks if the dni control code (letter) provided is valid.
 *
 * It does include checks for DNI K, L and M.
 * @WARNING It does not check the `DNI_REGEX`.
 * @param dni
 * @returns true for valid input and false for invalid input.
 */
function isValidDniLetter(dni) {
    const letterIndex = +dni.replace(/[^\d]/g, "") % 23;
    const letter = dni.slice(-1);
    return exports.DNI_CONTROL_LETTERS.charAt(letterIndex) === letter;
}
exports.isValidDniLetter = isValidDniLetter;