Only restart client if the contents of the watched files have changed #2745
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Motivation
Related to #2692
I don't know what in the user's setup is causing
.rubocop.yml
to be touched repeatedly, but we had issues in the past when the lockfile was continuously getting updated and we got into a restart loop.I think we should protect our file watchers from restarting when a file was touched, but the contents are still the same.
Implementation
Since the restart watchers are based on glob patterns, the idea is to let the first restart happen and remember the SHA of the content when we performed the restart. In subsequent file watch hits, we only restart if the contents were modified, otherwise we do nothing.