an external ._hs file can not start with a js function

I get an error if the first thing defined in the ._hs file is a js...end function. but If I put any def or behavior first then it's fine. it is not enough to have comments or a log first. easy to work around, but not quite right.

Start with an external ._hs file whose first definition is a js...end function, and compare its behavior with files that begin with a def or behavior. Reproduce the error and verify that the external file can start directly with the JavaScript function without requiring comments, logging, or another definition first.

Written by the indexing model from the issue text.