@cataract6545/tmui/components/tm-barcode/jsbarcode/barcodes/MSI/checksums.js

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export function mod10(number) {
	var sum = 0;
	for (var i = 0; i < number.length; i++) {
		var n = parseInt(number[i]);
		if ((i + number.length) % 2 === 0) {
			sum += n;
		}
		else {
			sum += (n * 2) % 10 + Math.floor((n * 2) / 10);
		}
	}
	return (10 - (sum % 10)) % 10;
}

export function mod11(number) {
	var sum = 0;
	var weights = [2, 3, 4, 5, 6, 7];
	for (var i = 0; i < number.length; i++) {
		var n = parseInt(number[number.length - 1 - i]);
		sum += weights[i % weights.length] * n;
	}
	return (11 - (sum % 11)) % 11;
}