Popular posts

You should already be getting a stack trace and the exact source code that causes the issue. If you're asking about badly transformed code (as in, the output is incorrect), then you'd have to do some digging like disabling plugins 1 by 1 until you track down the offender.

We don't have a specific log. Generally if an error is encountered, Babel will throw an exception, and it would be up to whatever is calling Babel to handle that. Usually that means it will be displayed in the console.