ibantools-germany
Version:
IBAN Validator and Generator for German Bank Accounts
23 lines (22 loc) • 780 B
JavaScript
;
/**
* ibantools-germany
* Copyright (c) 2022-2026 Markus Baumer <markus@baumer.dev>
* SPDX-License-Identifier: MIT OR MPL-2.0
*/
Object.defineProperty(exports, "__esModule", { value: true });
const helper_1 = require("../helper");
exports.default = (number) => {
const digits = (0, helper_1.getDigits)(number);
const givenCheckDigit = digits.pop(); // Check digit is last digit
const weightedDigits = (0, helper_1.weightDigitsRTL)(digits, [9, 8, 7, 6, 5, 4, 3, 2, 1]);
const sum = (0, helper_1.calculateSum)(weightedDigits);
const calculatedCheckDigit = sum % 11;
if (calculatedCheckDigit === 10) {
return "INVALID";
}
if (givenCheckDigit === calculatedCheckDigit) {
return "VALID";
}
return "INVALID";
};