YES. I sat here for too long missing the part where you are just counting the 1's in the binary code
like 0111 has 3 1's.
1001 has 2 1's.
1111 has 4 1's.

I like how intuitive this is, just it is very wasteful in computation.

I think that the final test use antoher value that is not a string, if you run with the sample test you can see that in fact, "*" is a string

My tests are all passing but failing on submission. I think the tests should be amended or more guidance should be given as to what the contraints are.

Make sure you have Node v6 selected in the version list.

var repeatIt = function(str, n) {
  return String.prototype.repeat.call(str, n)
}

not pass this kata

"*" is a string. The kata should define what it means by 'string' and shouldn't use the term string.

I think it would be clearer if the description reads as "... that are equal to THE NUMBER one in the binary....". I initially interpreted the description as "... that are equal to the ones in the binary..."