Unhelpful error message if $(window).weaveMethod called

[sminnee]

In my code I had a call like this:

 function parentMethod() {
    $(this).myWeaveMethod()
 }

In actual fact, $(this) was wrong - this referred to window, because I called parentMethod using setTimeout.

The error message that was returned was "el.getAttribute not found", referring to a line of code in the Weave selector engine. A little tricky to debug

Perhaps if $() is passed something other than a DOM element, concrete should fail with a better error message "Weave method myWeaveMethod called on a non-DOM object 'window'".