The issue should be fixed with 4.2 enabled

Cool, thanks

This seems TS 3.3 specific. If you switch to 2.4/ES6, it should work fine.

There appears to be an issue with the 'basic' Typescript tests

Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/home/codewarrior/ts/test.ts)

I don't think it is my code, as all the other tests pass within 1ms...

I find this one very difficult to understand...

Not an issue, the natural there is to limit the range of numbers to be considered to be at least 0 ;-)

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Finish the solution so that it returns the sum of all the multiples of 3 or 5 below the number passed in.

There are no natural numbers below a negative integer, the answer then is 0.

Negative integers aren't natural numbers by the generally-accepted mathematical definition.

My mistake I thought negative integers were not natural numbers

Well the kata didnt say negative natural numbers ?

Not an issue. You should figure out why yourself ;-)

-1961650628 did not equal 2333316668 for scala