@benbrnpetit for larger datasets push will be more performant than unshifting. When you add an element to the end of an array, it can be done instantly. When you unshift and array, you must move the entire array forward, which takes more time with larger arrays of data

There are no tests for JS. It just says "Should test for something" and '1+1 = 2' which is not the purpose of the kata

what do you mean? Like console log the input ?

Eveytime I run my code, it says Expected 0 to equal 6. WHat am I missing here ?

    let arr = Math.pow(Number(str1),Number(str2))
    let newArr = Number(String(arr).split('').slice(-1))
    return newArr
  }

I apologize. Since my code didn't work, I didn't imagine it to be spoiler information. What do you mean pring the middle values?
If you wouldn't mind, can you walk me through where my code went wrong as well as explain your thought process for your solution ?