Streamroller: console.log doesn't work

I made this code, it’s similar to FCC solution 1 but it doesn’t work.
Where is the mistake ? and why “console.log” doesn’t work here ?

function steamrollArray(arr) {
  const result = [];
  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
    } else {

steamrollArray([1, [2], [3, [[4]]]]);

Console logging is not the same thing as returning a value.

yes with both it’s ok. Of course!
My class sessions are too far apart right now. I’m losing my reflexes.

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