| 1 | import onlyNumbers from '@brazilian-utils/helper-only-numbers';
|
| 2 | import generateChecksum from '@brazilian-utils/helper-generate-checksum';
|
| 3 |
|
| 4 | var RESERVED_ENTRIES = ['00000000000', '11111111111', '22222222222', '33333333333', '44444444444', '55555555555', '66666666666', '77777777777', '88888888888', '99999999999'];
|
| 5 | var VERIFICATION_INDEXES = [9, 10];
|
| 6 |
|
| 7 | function isFormatValid(taxId) {
|
| 8 | return /^\d{3}\.?\d{3}\.?\d{3}-?\d{2}$/.test(taxId);
|
| 9 | }
|
| 10 |
|
| 11 | function isReserved(taxId) {
|
| 12 | return RESERVED_ENTRIES.indexOf(taxId) >= 0;
|
| 13 | }
|
| 14 |
|
| 15 | function isChecksumValid(taxId) {
|
| 16 | return VERIFICATION_INDEXES.every(function (index) {
|
| 17 | var mod = generateChecksum(taxId.slice(0, index).split('').reduce(function (a, b) {
|
| 18 | return a + b;
|
| 19 | }, ''), index + 1) % 11;
|
| 20 | return taxId[index] === String(mod < 2 ? 0 : 11 - mod);
|
| 21 | });
|
| 22 | }
|
| 23 |
|
| 24 | function isValidCpf(cpf) {
|
| 25 | if (!cpf) return false;
|
| 26 | var numericCPF = onlyNumbers(cpf);
|
| 27 | return isFormatValid(cpf) && !isReserved(numericCPF) && isChecksumValid(numericCPF);
|
| 28 | }
|
| 29 |
|
| 30 | export default isValidCpf;
|
| 31 |
|