Hi Steve (@Steve-Mcl),
Indeed you cannot find that code anywhere, even not by searching for specific keywords using the 'Search' panel in the developer tools. Other people on this forum will be able to explain you why that happens. I 'assume' your code is somehow build into the .min.js file together with all other code, and it is minified (so functions and variables are renamed so you cannot search them). But I might be mistaken ...
I just add a hardcoded debugger; statement in my code. When you have your developer tools open, you will arrive at that breakpoint automatically (with normal not-minified code). Don't forget to remove that statement afterwards! Because it is very annoying when developers are debugging their code, and they arrive all the time at your breakpoint. Users that don't have their developer tool window open, won't notice that you have forgotten to remove your debugger statement...
[EDIT] If I'm not mistaken it is enough to add such a debugger statement in your oneditprepare function. As soon as you double click a node, the debugger will stop there. At that moment you can add normal breakpoints in your developer tools in the other functions of your html file. So I don't think you have to put such debugger statements all over the place, because I think ALL the code from your html file will become visible at that moment. But again I can be mistaken ...
Bart
