// Use normIndexTest(array, index) to test your solution!

And why should we use it? Isn't the main function tested anyway?

JS:

• No random test
• Outdated Node version.

both languages: no fixed test checking for thickness handling of the box:

present (3, 14, 40) does not fit in box (16, 41, 19) => False

"The box's walls are one unit thick, so be sure to take that in to account."
Why is this false?: [ 10, 10, 10 ], [ 50, 50, 4 ]

I don't understand what the author means with that, can someone explain please?