ibantools-germany
Version:
IBAN Validator and Generator for German Bank Accounts
48 lines (47 loc) • 1.88 kB
JavaScript
;
/**
* ibantools-germany
* Copyright (c) 2022-2026 Markus Baumer <markus@baumer.dev>
* SPDX-License-Identifier: MIT OR MPL-2.0
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const helper_1 = require("../helper");
const method06_1 = require("./method06");
const method93_1 = __importDefault(require("./method93"));
const variation1 = (number) => (0, method06_1.method06Core)(number.slice(3, 10), [2, 3, 4, 5, 6, 7]);
const variation2 = (number) => {
const digits = (0, helper_1.getDigits)(number.slice(3, 10));
const givenCheckDigit = digits.pop(); // Check digit is last digit
const weightedDigits = (0, helper_1.weightDigitsRTL)(digits, [2, 3, 4, 5, 6, 7]);
const sum = (0, helper_1.calculateSum)(weightedDigits);
const { difference, remainder } = (0, helper_1.moduloDifference)(sum, 7, 7);
if (remainder === 0) {
return givenCheckDigit === 0 ? "VALID" : "INVALID";
}
return givenCheckDigit === difference ? "VALID" : "INVALID";
};
const variation3 = (number) => (0, method06_1.method06Core)(number.slice(4, 10), [2, 3, 4, 5, 6]);
const variation4 = (number) => (0, method93_1.default)(number);
exports.default = (number) => {
const paddedNumber = (0, helper_1.paddedAccountNumber)(number);
if (!paddedNumber.match(/^\d{2}99/)) {
if (variation1(paddedNumber) === "VALID") {
return "VALID";
}
if (variation2(paddedNumber) === "VALID") {
return "VALID";
}
}
if (paddedNumber.match(/^\d{2}99/)) {
if (variation3(paddedNumber) === "VALID") {
return "VALID";
}
}
if (variation4(paddedNumber) === "VALID") {
return "VALID";
}
return "INVALID";
};