function rangeOfNumbers(startNum, endNum) {



  // First part


  if (startNum > endNum) {

    return [];

  }


  let arr = rangeOfNumbers(startNum, endNum - 1);


  // First part


  // -----------------------------------------------------------------------------


  // Second part


  arr.push(endNum);

  return arr;


  // second part




}


console.log(rangeOfNumbers(1, 5));