stdnum
Version:
Standard Number Validation
61 lines • 5.33 kB
JavaScript
import * as exceptions from '../exceptions';
import { strings, isValidDate } from '../util';
function clean(input) {
let [value, err] = strings.cleanUnicode(input, ' ');
if (err) {
return [value, err];
}
if (value.startsWith('AL')) {
value = value.substring(2);
}
else if (value.startsWith('(AL)')) {
value = value.substring(4);
}
return [value, null];
}
const impl = {
name: 'Albanian VAT Number',
localName: 'Numri i Identifikimit për Personin e Tatueshëm',
abbreviation: 'NIPT',
compact(input) {
const [value, err] = clean(input);
if (err) {
throw err;
}
return value;
},
format(input) {
const [value] = clean(input);
return value;
},
validate(input) {
const [value, error] = clean(input);
if (error) {
return { isValid: false, error };
}
if (value.length !== 10) {
return { isValid: false, error: new exceptions.InvalidLength() };
}
if (!/^[A-M]\d{8}[A-Z]$/.test(value)) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
const [ccode, ydigit, monthDistrict, day, , check] = strings.splitAt(value, 1, 2, 4, 6, 9);
const month = ((parseInt(monthDistrict, 10) - 1) % 12) + 1;
const yearVal = ccode.charCodeAt(0) - 65;
const year = 1900 + yearVal * 10 + parseInt(ydigit, 10);
if (!isValidDate(String(year), String(month), day)) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
if (!/^[A-Z]$/.test(check)) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
return {
isValid: true,
compact: value,
isIndividual: true,
isCompany: true,
};
},
};
export const { name, localName, abbreviation, validate, format, compact } = impl;
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