freeCodeCamp Challenge Guide: Slice and Splice

Hi guys, it took me quite a while however I just cannot understand why the below solution would not work…

function frankenSplice(arr1, arr2, n) {
  let arr2Copy = arr2.slice(0);
  let arr2Updated = arr2Copy.splice(n, 0, ...arr1);
  return arr2Updated;

frankenSplice([1, 2, 3], [4, 5, 6], 1);


Look at what splice returns.

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