Function checkDigit

api/1.4/data/NO/inject.js:15–23

(staticSequence, input)

    const calculateCheckDigits = (tenDigits) => {
      const checkDigit = (staticSequence, input) => {
        input = input.split('').map(Number);
        let productSum = staticSequence.reduce((acc, value, index) => {
          return acc + value * input[index];
        }, 0);

        const sumMod11 = productSum % 11;
        return (sumMod11 === 0 ? '0' : (11 - sumMod11));
      };
      const staticSequenceFirstCheckDigit = [3, 7, 6, 1, 8, 9, 4, 5, 2];
      const staticSequenceSecondCheckDigit = [5, 4, 3, 2, 7, 6, 5, 4, 3, 2];