nif-dni-nie-cif-validation/dist/nif/legalEntityNif/legalEntityNif.js

Validate NIF, DNI, NIE and CIF documents easily.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isValidLegalEntityNif = exports.isValidLegalEntityNifControlCode = exports.LEGAL_ENTITY_NIF_REGEX = exports.LEGAL_ENTITY_CONTROL_LETTERS = void 0;
exports.LEGAL_ENTITY_CONTROL_LETTERS = "JABCDEFGHI";
exports.LEGAL_ENTITY_NIF_REGEX = /^[ABCDEFGHJNPQRSUVW][\d]{7}[\dA-J]$/i;
const HAS_CONTROL_LETTER_REGEX = /^[PQRSW]/;
const HAS_CONTROL_LETTER_IDENTIFIER = "00";
const HAS_CONTROL_NUMBER_REGEX = /^[ABEH]/;
function sumEvenPositions(legalEntityNumbers) {
    return (+legalEntityNumbers[1] + +legalEntityNumbers[3] + +legalEntityNumbers[5]);
}
function calculateOddPosition(num) {
    const doubledNum = num * 2;
    if (doubledNum < 10)
        return doubledNum;
    const splittedNum = `${doubledNum}`.split("");
    return +splittedNum[0] + +splittedNum[1];
}
function calculateOddPositions(legalEntityNumbers) {
    return (calculateOddPosition(+legalEntityNumbers[0]) +
        calculateOddPosition(+legalEntityNumbers[2]) +
        calculateOddPosition(+legalEntityNumbers[4]) +
        calculateOddPosition(+legalEntityNumbers[6]));
}
function getLegalEntityNumbers(legalEntityNif) {
    return legalEntityNif.slice(1, -1);
}
function getLegalEntityNifControlNumber(nif) {
    const legalEntityNumbers = getLegalEntityNumbers(nif);
    const keyNumber = +`${sumEvenPositions(legalEntityNumbers) +
        calculateOddPositions(legalEntityNumbers)}`.slice(-1);
    return keyNumber === 0 ? keyNumber : 10 - keyNumber;
}
function isControlCodeLetter(legalEntityNif) {
    return (HAS_CONTROL_LETTER_REGEX.test(legalEntityNif) ||
        legalEntityNif[0] === HAS_CONTROL_LETTER_IDENTIFIER);
}
function isControlCodeNumber(legalEntityNif) {
    return HAS_CONTROL_NUMBER_REGEX.test(legalEntityNif);
}
/**
 * Checks if the legal entity nif control code (letter or number)
 * provided is valid.
 *
 * @WARNING It does not check the `LEGAL_ENITY_NIF_REGEX`.
 * @throws May throw an error if the string is not long enough (9 characters)
 * @param legalEntityNif
 * @returns
 */
function isValidLegalEntityNifControlCode(legalEntityNif) {
    const controlCodeToVerify = legalEntityNif.slice(-1);
    const controlNumber = getLegalEntityNifControlNumber(legalEntityNif);
    if (isControlCodeLetter(legalEntityNif))
        return exports.LEGAL_ENTITY_CONTROL_LETTERS[controlNumber] === controlCodeToVerify;
    if (isControlCodeNumber(legalEntityNif))
        return controlNumber === +controlCodeToVerify;
    return isNaN(+controlCodeToVerify)
        ? exports.LEGAL_ENTITY_CONTROL_LETTERS[controlNumber] === controlCodeToVerify
        : controlNumber === +controlCodeToVerify;
}
exports.isValidLegalEntityNifControlCode = isValidLegalEntityNifControlCode;
/**
 * Checks if the legalEntityNif provided is valid.
 *
 * It does not include old K, L and M formats.
 * @param legalEntityNif
 * @returns true for valid input and false for invalid input.
 */
function isValidLegalEntityNif(legalEntityNif) {
    return (exports.LEGAL_ENTITY_NIF_REGEX.test(legalEntityNif) &&
        isValidLegalEntityNifControlCode(legalEntityNif));
}
exports.isValidLegalEntityNif = isValidLegalEntityNif;