Should be implemented by Rhino embeddings to allow the require() function to
obtain ModuleScript objects. We provide two default implementations,
but you can of course roll your own if they don't suit your needs.
Returns a module script. It should attempt to load the module script if
it is not already available to it, or return an already loaded module
script instance if it is available to it.
cx - current context. Can be used to compile module scripts.
moduleId - the ID of the module. An implementation must only accept
an absolute ID, starting with a term.
moduleUri - the URI of the module. If this is not null, resolution
of moduleId is bypassed and the script is directly loaded
baseUri - the module path base URI from which moduleUri
paths - the value of the require() function's "paths" attribute. If
the require() function is sandboxed, it will be null, otherwise it will
whether and how it wants to honor the contents of the array.
a module script representing the compiled code of the module.
Null should be returned if the script could not found.
java.lang.Exception - if there was an unrecoverable problem obtaining the
java.lang.IllegalArgumentException - if the module ID is syntactically not a
valid absolute module identifier.