Firebug version 1.3 have just been released with more than 50 bug fixes and lots of improvements and new features including :

  • FBTrace service (for internal Firebug debugging).
  • TraceConsole (for internal Firebug debugging)
  • Script panel implemented with as viewport on source to improve performance on large JS files
  • Find debuggers by scope chain analysis rather than jsContext
  • scope chain shows in watches panel (from contribution by kpdecker)
  • Reimplement console/command line to reduce chance of console undefined
  • DOM properties alphabetical
  • Reimplement all response views with nsITraceableChannel
  • Centralize handlers for http-on-modify-request in firebug-http-observer component
  • Net panel timing improvements: more categories in timing.
  • Add TraceConsole to aid debugging Firebug.
  • FBTrace panel removed from X versions (TraceConsole instead)
  • new option DBG_SPY for spy.js
  • firebug-service tracing to traceConsole

Rob Campbell posted on his blog that

this version will not be compatible with Firefox 3.1 (Shiretoko) and up. For that you’ll need a Firebug 1.4 alpha, soon to be dubbed beta available on getfirebug.com’s releases directory

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