This plugin needs to be used to write our own custom ESLint plugins that
live in our repository. It replaces the `rulesdir` CLI option, as the
solution of putting it in `.eslintrc.js` is compatible with code editor
plugins.
I also discovered that we were incorrectly running clang-format on
`node_modules`, as I recently fixed the PRESUBMIT. To make sure that
doens't happen again, add a `.clang-format` that disables the formatting
in that folder.
DISABLE_THIRD_PARTY_CHECK=Add new node_module
Bug: 1060123
Change-Id: Ib2c0d23f499604deeea51cb06192bce3a7aa89af
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2096449
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>