Tests have been updated since, so the error is not reproducible now, closing.

and then, there's this

Anything which is not an object type such as maps, arrays, object literals are not allowed. You can create variables of primitive types such as numbers or may be even string

Seems like it is "performance/optimization" problem... I timed out with 45 passes (not even doing anything nested...)

Fixed the lack of the function call, about the random tests, there is another issue above, so closing this one.

It is an issue.

Good idea, but there is a thing called positive lookahead ;)

I agree.

added some time ago

/done

solved

Nice Easter egg! :]

Sample tests are already present