@studiovisual/brazilian-validator-js/dist/cnpj.js

A lightweight and efficient JavaScript library for validating Brazilian documents and phone numbers

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isValidCNPJLength = isValidCNPJLength;
exports.isValidCNPJDigits = isValidCNPJDigits;
exports.isValidCNPJFirstCheckDigit = isValidCNPJFirstCheckDigit;
exports.isValidCNPJSecondCheckDigit = isValidCNPJSecondCheckDigit;
exports.isValidCNPJ = isValidCNPJ;
const utils_1 = require("./utils");
/**
 * Checks if the provided CNPJ has a valid length.
 * @param value The CNPJ value to validate.
 * @returns A boolean indicating whether the length is valid.
 */
function isValidCNPJLength(value) {
    value = (0, utils_1.extractDigits)(value);
    // Checks if the CNPJ number has 14 digits
    return value.length === 14;
}
/**
 * Checks if the provided CNPJ has a valid length.
 * @param value The CNPJ value to validate.
 * @returns A boolean indicating whether the length is valid.
 */
function isValidCNPJDigits(value) {
    value = (0, utils_1.extractDigits)(value);
    // Eliminates invalids with all the same digits
    const isAllEqual = /^(\d)\1+$/.test(value);
    return !isAllEqual;
}
/**
 * Checks if the provided CNPJ has a valid firs check digit.
 * @param value The CNPJ value to validate.
 * @returns A boolean indicating whether the firs check digit is valid.
 */
function isValidCNPJFirstCheckDigit(value) {
    value = (0, utils_1.extractDigits)(value);
    let sum = 0;
    let factor = 5;
    for (let i = 0; i < 12; i++) {
        sum += parseInt(value.charAt(i), 10) * factor--;
        if (factor === 1)
            factor = 9;
    }
    const remainder = sum % 11;
    const digit = remainder < 2 ? 0 : 11 - remainder;
    return parseInt(value.charAt(12), 10) === digit;
}
/**
 * Checks if the provided CNPJ has a valid second check digit.
 * @param value The CNPJ value to validate.
 * @returns A boolean indicating whether the second check digit is valid.
 */
function isValidCNPJSecondCheckDigit(value) {
    value = (0, utils_1.extractDigits)(value);
    let sum = 0;
    let factor = 6;
    for (let i = 0; i < 13; i++) {
        sum += parseInt(value.charAt(i), 10) * factor--;
        if (factor === 1)
            factor = 9;
    }
    const remainder = sum % 11;
    const digit = remainder < 2 ? 0 : 11 - remainder;
    return parseInt(value.charAt(13), 10) === digit;
}
/**
 * Checks if the provided CNPJ is valid.
 * @param value The CNPJ value to validate.
 * @returns A boolean indicating whether the CNPJ is valid.
 */
function isValidCNPJ(value) {
    // Check if the CNPJ number satisfies all the conditions: length, not equals digits, first check digit and second check digit
    return (isValidCNPJLength(value) &&
        isValidCNPJDigits(value) &&
        isValidCNPJFirstCheckDigit(value) &&
        isValidCNPJSecondCheckDigit(value));
}