Suppose foo.res has
import ... from "blah.js"
this works fine if the directory structure is:
some_path/foo.res
some_path/foo.bs.js // generated
some_path/blah.js
However, when we have 'in-source": false we now have a situation where the *.bs.js file is in lib/... but the *.js file is not copied over.
How do we have rescript copy over the *.js files to the right places ?