custom code style or view with soft wrap at comma?

I and trying to read and edit ndJSON -> http://ndjson.org/ 

but this single line thing is driving me crazy . as this single line is sooooo lonnnnggg. and I need to edit many files for creating test data. 

I have found soft wrap in active editor but this only shows the end of the editor window. 

I haven't seen a code style for ndjson yet and I have never built a custom one. 

what are my options?