text: 
  let insertShiftArray = (arr, num) => {
  
    let newArr = [];
    let middle = Math.ceil(arr.length/2);
  
    for(let i = 0; i < arr.length+1; i++) {
      if(i < middle) {
        newArr[i] = arr[i];
      }
      if(i == middle) {
        newArr[i] = num;
      }
      else if(i > middle) {
        newArr[i] = arr[i -1];
      }
    }
    return newArr;
  };
  module.exports = insertShiftArray;
  
  //with help from anna / tests are mine