src/lib/countries/hungary.ts
import { Country } from '../jsvat';
export const hungary: Country = {
name: 'Hungary',
codes: ['HU', 'HUN', '348'],
calcFn: (vat: string): boolean => {
let total = 0;
// Extract the next digit and multiply by the counter.
for (let i = 0; i < 7; i++) {
total += Number(vat.charAt(i)) * hungary.rules.multipliers.common[i];
}
// Establish check digit.
total = 10 - (total % 10);
if (total === 10) total = 0;
// Compare it with the last character of the VAT number. If it's the same, then it's valid.
const expect = Number(vat.slice(7, 8));
return total === expect;
},
rules: {
multipliers: {
common: [9, 7, 3, 1, 9, 7, 3]
},
regex: [/^(HU)(\d{8})$/]
}
};