How to emit a client-side script library

Thanks Jonathan for this post,

I use this approach with "RegisterStartupScript" and "RegisterClientScriptBlock", its really cool!

What I wonder is, if there is a way to emit a sort of script library, so that developers using my control can access methods and properties via javascript directly on the client.

I assume that this more of javascript question and that the library is emitted using "RegisterClientScriptBlock", too?

Frank