Should I see source-mapped line numbers in the Debug console for my React Native app?

When debugging my React Native app, should I expect to see references to my source files with line numbers (e.g. App.js:10) next to my console output rather than the less-than-useful packager URL (e.g. http://…8081/index.bundle:67363)?

If so, tips on where to start debugging the issue would be appreciated. 

Thanks!