semicolons are optional in javascript, that's why it works. However, it would be cleaner to used them to be consistent within respective code. Or omit them everywhere.

done

Description should be language-agnostic

Haskell translation

The test cases require us to return a decimal number and this sounds like it's asking for a 32-bit number.

I think that your understanding of "decimal numbers" and "32-bit numbers" is not exactly right. Test cases do not require you to require "a decimal number", but just a number. Representation, decimal or any other, is irrelevant here. And 2149583361 can be described as "32-bit number" if it can be stored with 32 bits of information (which it can).

Final line of instructions could be rewritten to be less misleading...
"Because the above IP address has 32 bits, we can represent it as the 32 bit number: 2149583361."
The test cases require us to return a decimal number and this sounds like it's asking for a 32-bit number.

Once I'd figured that out, I enjoyed it though - thanks

Thanks a lot! You help me to find the most stupid bug in my code! Of course it was infinite loop! Thank you!

You've created an infinite loop. It only triggers when your code reaches the second sample test, so when your code returns the correct answer for the first test, your code will time out.

I have error "Execution Timed Out (12000 ms)". If anybody knows why?
It's interesting that this error appears when kata return correct answer. When kata return wrong answer there in no error, only message about "expected.."

what would be the point of that ? your code is much longer and more cumbersome to write than a legitimate solution.

I was able to hardcode it, as tests only go up to 20. Maybe make that 1000.

Wut?