how to search the contents of all associated js files simultaneously through IE F12 panel?

how to search the contents of all associated js files simultaneously through IE F12 panel?

Hello - I'm trying to debug a web page that has around 30 associated js files.  Specifically, I've identified a function name and I want to see its details.  To do this I first need to identify which js lib the function name belongs to.
 
The F12 view in IE shows me a dropdown of all the js files associated with the page.  There's a search widget in the top right corner of the panel.  However, this search widget only appears to search the content of the script that's currently open in the F12 window.  I need the ability to search all of the scripts associated with the page with a single search - i.e. - not having to open and search each js file individually.
 
Do you have any idea if the IE F12 panel supports the ability to search all associated script files simultaneously?  If not IE then maybe some other free 3rd party tool?  It seems like IE should support this ability considering that web apps are so js-centric these days and may have dozens of js file references (30 in my case)?