Summary: If you are trying to write and debug some JavaScript code that is intended to be run from JavaScriptCore, and *not* from within a browser window, there does not seem to be way to attach the JavaScript debugger, now that Drosera has been folded into Safari. Steps to Reproduce: 1. Write a Cocoa Application that executes some JavaScript code via JavaScriptCore methods. 2. Try to debug it. Expected Results: You should be able to somehow attach a JavaScript debugger so you can step through your code, examine global variables, etc. Actual Results: You can't. (Unless the debugger and instructions on how to attach it are hidden away!) Regression: I think that when Drosera was a stand-alone application, you could do this. But Drosera isn't part of the webkit nightlies anymore and the old version I tried crashes. Notes: JavaScript is DA FUTURE so we gotta figure out how to debug it!