Expected output from Trace and from emitObfuscatedFiles options?

I've added the `trace` option to my configuration to help me determine why the output doesn't seem to be transformed at all, but I've not been able to determine where I should see this output. It doesn't appear in my console.

I haven't been able to find any output files anywhere either. Where would one expect to find those?

Thanks for any advice!

Review the `trace` and `emitObfuscatedFiles` configuration options and determine where this transformer reports console output and writes files. Done means documenting the expected output locations and behavior for React Native users.

Written by the indexing model from the issue text.