kontonummer
Version:
A validator for swedish banking numbers
48 lines • 1.84 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.mod11 = exports.mod10 = void 0;
const mod10 = (number) => {
number = `${number}`;
let len = number.length;
let bit = 1;
let sum = 0;
let val;
const arr = [0, 2, 4, 6, 8, 1, 3, 5, 7, 9];
while (len) {
val = parseInt(number.charAt(--len), 10);
bit ^= 1;
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
sum += bit ? arr[val] : val;
}
return !!sum && sum % 10 === 0;
};
exports.mod10 = mod10;
const mod11 = (number) => {
number = `${number}`;
let len = number.length;
let sum = 0;
let val;
const weights = [1, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1];
const arr = weights.splice(weights.length - len, weights.length - (weights.length - len));
while (len) {
val = parseInt(number.charAt(--len), 10);
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
sum += arr[len] * val;
}
return !!sum && sum % 11 === 0;
};
exports.mod11 = mod11;
exports.default = (type, comment, sortingCode, accountNumber) => {
// 1:1 => mod11 on 3 last of clearing + whole account number
if (type === 1 && comment === 1)
return (0, exports.mod11)(`${sortingCode.substring(1)}${accountNumber.padStart(7, '0')}`);
// 1:2 => mod 11 on whole clearing + whole account number
if (type === 1 && comment === 2)
return (0, exports.mod11)(`${sortingCode}${accountNumber.padStart(7, '0')}`);
// 2:2 => mod11 on whole account number (SHB) 9 digits
if (type === 2 && comment === 2)
return (0, exports.mod11)(accountNumber.padStart(9, '0'));
// 2:1 & 2:3 => mod10 on whole account number
return (0, exports.mod10)(accountNumber.padStart(10, '0'));
};
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