ibantools-germany
Version:
IBAN Validator and Generator for German Bank Accounts
38 lines (37 loc) • 1.25 kB
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");
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);
};