stdnum
Version:
Standard Number Validation
62 lines • 4.99 kB
JavaScript
import * as exceptions from '../exceptions';
import { strings, weightedSum } from '../util';
const companyTypes = {
V: 4,
E: 8,
J: 12,
P: 16,
G: 20,
};
function clean(input) {
return strings.cleanUnicode(input, ' -');
}
const impl = {
name: 'Venezuelan VAT Number',
localName: 'Registro Único de Información Fiscal',
abbreviation: 'RIF',
compact(input) {
const [value, err] = clean(input);
if (err) {
throw err;
}
return value;
},
format(input) {
const [value] = clean(input);
return strings.splitAt(value, 1, 9).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.substr(1))) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
const [ctype, body, check] = strings.splitAt(value, 1, 9);
const first = companyTypes[ctype];
if (first === undefined) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
const digit = (first +
weightedSum(body, {
weights: [3, 2, 7, 6, 5, 4, 3, 2],
modulus: 11,
})) %
11;
if ('00987654321'[digit] !== check) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
return {
isValid: true,
compact: value,
isIndividual: ['V', 'E'].includes(ctype),
isCompany: ['J', 'G', 'P'].includes(ctype),
};
},
};
export const { name, localName, abbreviation, validate, format, compact } = impl;
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