sumArrayNumbers.ts

'use strict';

const originalArray = [1, 2, 3, 4];
const sumArray = (arr: number[], times: number) => {
  const totalNumber = Number(arr.join(''));
  const numberSummed: number = totalNumber + times;
  const arrayAfterSum = numberSummed.toString().split('');

  console.log('totalNumber:', totalNumber);
  console.log('numberSummed:', numberSummed);
  console.log('arrayAfterSum:', arrayAfterSum);
};

sumArray(originalArray, 91285012387128);