Same here lol I am digging through the comments to find out

You should not put return 0, as it can be confused with examples like (18-18) or (18*0) or maybe when puyying (18/0) it is not logical that i'll get 0!.

2nd fail test said that, there instead of array [0,0] function have to be []

You should check first if the input is null before checking is length

Just simple if else statements does the trick

Good)

we are asked only those four operators, not "exponentiation"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Same here

в некоторых случаях eval может навредить, поэтому достаточно хорошая альтернатива бро

You would just test adding multiple sets of numbers to confirm that it's working.