This started of as my own little utility but then I use it in almost all the flash, flex, haXe applications when output is SWF. Now its available as a opensource project in github and the final compile dfiles are here, if you just want to use it.
This is nothing more than a logger named raytrace. It takes string as the only parameter and the implementation is done in haXe and NME.
Just put the "raytrace.as" in the root folder of your flash/flex application and then from anywhere in your code one can write
Then this message will be visible in this RayTrace swf. Both the ".as" file and the ".swf" are packaged here as a zip file for your no time getting started.
Happy haXe -ing