stdnum
Version:
Standard Number Validation
53 lines • 4.72 kB
JavaScript
import * as exceptions from '../exceptions';
import { isValidDateCompactDDMMYY, strings, weightedSum } from '../util';
function clean(input) {
return strings.cleanUnicode(input, ' -');
}
const impl = {
name: 'Austrian Social Security Number',
localName: 'Versicherungsnummer',
abbreviation: 'VSNR',
compact(input) {
const [value, err] = clean(input);
if (err) {
throw err;
}
return value;
},
format(input) {
const [value] = clean(input);
return strings.splitAt(value, 4).join(' ');
},
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 (!strings.isdigits(value)) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
const [front, check, dob] = strings.splitAt(value, 3, 4);
if (!isValidDateCompactDDMMYY(dob, true)) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
const sum = weightedSum(`${front}${dob}`, {
weights: [3, 7, 9, 5, 8, 4, 2, 1, 6],
modulus: 11,
});
const digit = String(sum % 11);
if (check !== digit) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
return {
isValid: true,
compact: value,
isIndividual: parseInt(front, 10) < 80000000,
isCompany: front.length === 8 && parseInt(front, 10) > 80000000,
};
},
};
export const { name, localName, abbreviation, validate, format, compact } = impl;
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