Subject: bug#24896: JSX prop indentation after fat arrow

From: Jackson Ray Hamilton <[email-masked]>
Date: Tue, 4 Jun 2019 19:47:21 -0700

A set of changes I pushed to the Emacs master branch 2 months ago should 
resolve this issue.  (First fixed in be86ece42c, but there were several 
commits after that when I broke/fixed it again.  The master branch is 
your best bet.)