stdnum
Version:
Standard Number Validation
54 lines • 4.8 kB
JavaScript
import * as exceptions from '../exceptions';
import { strings } from '../util';
import { validStructure, validChecksum, toDateArray, } from './personIdentifierHelpers';
function clean(input) {
return strings.cleanUnicode(input, ' -.');
}
function toDob(firstSix) {
const [y, m, d] = toDateArray(firstSix).map(s => parseInt(s, 10));
const adjustedDateArrays = [
[y, m - 20, d],
[y, m - 40, d],
];
const dobArray = adjustedDateArrays.find(ada => ada[1] >= 0 && ada[1] <= 12) || [];
return dobArray.map(n => `${n}`.padStart(2, '0')).join('');
}
const impl = {
name: 'Belgian Number for Foreigners',
localName: 'Numéro BIS',
abbreviation: 'BIS',
compact(input) {
const [value, err] = clean(input);
if (err) {
throw err;
}
return value;
},
format(input) {
const [value] = clean(input);
return value;
},
validate(input) {
const number = impl.compact(input);
if (!strings.isdigits(number) || parseInt(number, 10) <= 0) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
if (number.length !== 11) {
return { isValid: false, error: new exceptions.InvalidLength() };
}
if (!validStructure(number, toDob)) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
if (!validChecksum(number, toDob)) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
return {
isValid: true,
compact: number,
isIndividual: true,
isCompany: false,
};
},
};
export const { name, localName, abbreviation, validate, format, compact } = impl;
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