Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | 9x 18x 8x 8x 100x 8x 100x 100x 100x 100x 8x 8x 18x 18x 17x 1x 16x 2x 14x 10x 4x 4x 4x 4x | const validateCNPJ = (cnpj) => {
const verifierDigit = (numbers) => {
let index = 2;
const reverse = numbers
.split('')
.reduce((buffer, number) => [parseInt(number, 10)].concat(buffer), []);
const sum = reverse.reduce((buffer, number) => {
let aux = buffer;
aux += number * index;
index = index === 9 ? 2 : index + 1;
return aux;
}, 0);
const mod = sum % 11;
return mod < 2 ? 0 : 11 - mod;
};
const stripped = cnpj.replace(/[^\d]+/g, '');
if (stripped === '') return false;
// CNPJ must be defined
if (!stripped) {
return false;
}
// CNPJ must have 14 chars
if (stripped.length !== 14) {
return false;
}
// CNPJ can't be blacklisted
if (
[
'00000000000000',
'11111111111111',
'22222222222222',
'33333333333333',
'44444444444444',
'55555555555555',
'66666666666666',
'77777777777777',
'88888888888888',
'99999999999999',
].indexOf(stripped) >= 0
) {
return false;
}
let numbers = stripped.substr(0, 12);
numbers += verifierDigit(numbers);
numbers += verifierDigit(numbers);
return numbers.substr(-2) === stripped.substr(-2);
};
export default validateCNPJ;
|