ibantools-germany
Version:
IBAN Validator and Generator for German Bank Accounts
50 lines (47 loc) • 1.88 kB
JavaScript
;
/**
* ibantools-germany
* Copyright (C) 2022-2024 Markus Baumer <markus@baumer.dev>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
Object.defineProperty(exports, "__esModule", { value: true });
const helper_1 = require("../helper");
const method00_1 = require("./method00");
const tenDigits = (number) => {
if (number.slice(3, 4) !== "9") {
return "INVALID";
}
return (0, method00_1.method00Core)(number.slice(3, 10), [2, 1, 2, 1, 2, 1, 2, 1, 2]);
};
const nineDigitsVariation1 = (number) => {
return (0, method00_1.method00Core)(number, [2, 1, 2, 1, 2, 1, 2, 1, 2]);
};
const nineDigitsVariation2 = (number) => {
return (0, method00_1.method00Core)(`${number.slice(1, 2)}${number.slice(4, 10)}`, [2, 1, 2, 1, 2, 1, 2, 1, 2]);
};
exports.default = (number) => {
if (number.length < 6) {
return "INVALID";
}
const paddedNumber = (0, helper_1.paddedAccountNumber)(number);
if (paddedNumber.startsWith("04")) {
return "NO_CHECK_DIGIT_CALCULATION";
}
if (!paddedNumber.startsWith("0")) {
return tenDigits(paddedNumber);
}
if (nineDigitsVariation1(paddedNumber) === "VALID") {
return "VALID";
}
return nineDigitsVariation2(paddedNumber);
};