cpf-cnpj-formatter/dist/src/index.js

A simple formatter for CPF and CNPJ numbers

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.formatCPFCNPJ = void 0;
/**
 * Validates a CPF number
 * @param cpf - The CPF number to validate
 * @returns ValidationResult object with validation status and error message if invalid
 */
const validateCPF = (cpf) => {
    const numbers = cpf.replace(/\D/g, '');
    if (numbers.length !== 11) {
        return {
            isValid: false,
            error: 'CPF deve conter 11 dígitos'
        };
    }
    // Check if all digits are the same
    if (/^(\d)\1+$/.test(numbers)) {
        return {
            isValid: false,
            error: 'CPF inválido'
        };
    }
    // Validate first digit
    let sum = 0;
    for (let i = 0; i < 9; i++) {
        sum += parseInt(numbers.charAt(i)) * (10 - i);
    }
    let rest = 11 - (sum % 11);
    let digit = rest > 9 ? 0 : rest;
    if (digit !== parseInt(numbers.charAt(9))) {
        return {
            isValid: false,
            error: 'CPF inválido'
        };
    }
    // Validate second digit
    sum = 0;
    for (let i = 0; i < 10; i++) {
        sum += parseInt(numbers.charAt(i)) * (11 - i);
    }
    rest = 11 - (sum % 11);
    digit = rest > 9 ? 0 : rest;
    if (digit !== parseInt(numbers.charAt(10))) {
        return {
            isValid: false,
            error: 'CPF inválido'
        };
    }
    return { isValid: true };
};
/**
 * Validates a CNPJ number
 * @param cnpj - The CNPJ number to validate
 * @returns ValidationResult object with validation status and error message if invalid
 */
const validateCNPJ = (cnpj) => {
    const numbers = cnpj.replace(/\D/g, '');
    if (numbers.length !== 14) {
        return {
            isValid: false,
            error: 'CNPJ deve conter 14 dígitos'
        };
    }
    // Check if all digits are the same
    if (/^(\d)\1+$/.test(numbers)) {
        return {
            isValid: false,
            error: 'CNPJ inválido'
        };
    }
    // Validate first digit
    let size = numbers.length - 2;
    let numbersWithoutDigits = numbers.substring(0, size);
    const digits = numbers.substring(size);
    let sum = 0;
    let pos = size - 7;
    for (let i = size; i >= 1; i--) {
        sum += parseInt(numbersWithoutDigits.charAt(size - i)) * pos--;
        if (pos < 2)
            pos = 9;
    }
    let result = sum % 11 < 2 ? 0 : 11 - (sum % 11);
    if (result !== parseInt(digits.charAt(0))) {
        return {
            isValid: false,
            error: 'CNPJ inválido'
        };
    }
    // Validate second digit
    size = size + 1;
    numbersWithoutDigits = numbers.substring(0, size);
    sum = 0;
    pos = size - 7;
    for (let i = size; i >= 1; i--) {
        sum += parseInt(numbersWithoutDigits.charAt(size - i)) * pos--;
        if (pos < 2)
            pos = 9;
    }
    result = sum % 11 < 2 ? 0 : 11 - (sum % 11);
    if (result !== parseInt(digits.charAt(1))) {
        return {
            isValid: false,
            error: 'CNPJ inválido'
        };
    }
    return { isValid: true };
};
/**
 * Formats and validates a CPF or CNPJ number
 * @param value - The value to format and validate
 * @returns An object containing the formatted value and validation result
 */
const formatCPFCNPJ = (value) => {
    const numbers = value.replace(/\D/g, '');
    if (numbers.length <= 11) {
        const validation = validateCPF(numbers);
        const formatted = numbers
            .replace(/(\d{3})(\d)/, '$1.$2')
            .replace(/(\d{3})(\d)/, '$1.$2')
            .replace(/(\d{3})(\d{1,2})$/, '$1-$2');
        return { formatted, validation };
    }
    else {
        const validation = validateCNPJ(numbers);
        const formatted = numbers
            .replace(/(\d{2})(\d)/, '$1.$2')
            .replace(/(\d{3})(\d)/, '$1.$2')
            .replace(/(\d{3})(\d)/, '$1/$2')
            .replace(/(\d{4})(\d{1,2})$/, '$1-$2');
        return { formatted, validation };
    }
};
exports.formatCPFCNPJ = formatCPFCNPJ;