Specify The Application Root In Web.config Handler Mapping?

I have an application with an HttpHandler that processes any requests for a .js file. I only want this handler to process *.js files that are requested in the root of the application.

The handler mapping looks like this:

<add name="HandleJS" path="*.js" verb="*" type="MyApp.JsHandler" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode,runtimeVersionv4.0" />

Currently, this handler processes ALL requested *.js files. Here is an example of the behavior I want.

This request would be processed by the handler: http://localhost/myapps/approot/script.js

and this one would not be processed by the handler: http://localhost/myapps/approot/dontProcessMe/script.js

I'd really like to avoid including the full absolute path in the handler path so I tried some other things first.

It doesn't look like the path property of the add element allows the use of the ~/ application root mechanism, so setting path="~/*.js" doesn't work.

I've also tried replicating the StaticFile handler that's built into IIS and doing something like this:

<add name="MyStaticFiles" path="*/*.js" verb="*" modules="StaticFileModule" />

or

<add name="MyStaticFiles" path="dontProcessMe/*.js" verb="*" modules="StaticFileModule" />

Both of which just return a blank response with an HTTP status of 200.