WOW

good details!

The second kata in my collection.

This is a great kata, let me benefit a lot

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