this helped.

Thank you! Your comment helped me solve this instantly.

100% this! This should be the updated description.

Thanks for your help.

100% agreed, thanks for clarifying the description!

Duplicate issue.

divisors [ 2  3 ]
clan 
1,5        N  N
2,4        Y  N
3          N  Y
6          Y  Y

I agree, the Add()() signature is something I've never seen and is very confusing, being able to research Function Currying would have helped

Fixed, already reported 2 years ago.

Updated.

will update the test suits. Thanks ;-)

Cannot read property map of undefined

And surely it's not an issue with your code, right?

I don't think you really understand the definition of words. ;-)

From description:

Each word is separated by space

For example, don't is a word, not two words don and t.

For testcase sc("Don't ask me. I don't know."):

            Don't ask me. I don't know.
my count:   123 4 567 89  0 1     2345  == 15
your count: 123 4 567 89  0 1   2 3456  == 16

The problem is in the random tests strings (and/or the control function) because there are no spaces before or after the non-letter chars in strings like this Test.assertSimilar(actual it's interpreted as testassertsimilaractual just one word.