stdnum
Version:
Standard Number Validation
93 lines • 6.24 kB
JavaScript
;
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
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})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.compact = exports.format = exports.validate = exports.abbreviation = exports.localName = exports.name = void 0;
const exceptions = __importStar(require("../exceptions"));
const util_1 = require("../util");
const checksum_1 = require("../util/checksum");
function clean(input) {
const [value, err] = util_1.strings.cleanUnicode(input, ' -');
if (err !== null) {
return [value, err];
}
if (value.startsWith('DK')) {
return [value.substr(2), null];
}
return [value, null];
}
const impl = {
name: 'Danish VAT Number',
localName: 'Momsregistreringsnummer',
abbreviation: 'CVR',
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 !== 8) {
return { isValid: false, error: new exceptions.InvalidLength() };
}
if (!util_1.strings.isdigits(value)) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
const [front, check] = util_1.strings.splitAt(value, -1);
const sum = (0, checksum_1.weightedSum)(front, {
modulus: 11,
weights: [2, 7, 6, 5, 4, 3, 2, 1],
});
if (String((11 - sum) % 10) !== check) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
return {
isValid: true,
compact: value,
isIndividual: false,
isCompany: true,
};
},
};
exports.name = impl.name, exports.localName = impl.localName, exports.abbreviation = impl.abbreviation, exports.validate = impl.validate, exports.format = impl.format, exports.compact = impl.compact;
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