To add to this, Mozilla have their own ESLint preset: <a href="https:&#x2F;&#x2F;dxr.mozilla.org&#x2F;mozilla-central&#x2F;source&#x2F;devtools&#x2F;.eslintrc" rel="nofollow">https:&#x2F;&#x2F;dxr.mozilla.org&#x2F;mozilla-central&#x2F;source&#x2F;devtools&#x2F;.esl...</a>