message: Remove the arrow-paren lint rule
  It's now in the base lint rules file:
diff: @@ -97,7 +97,6 @@ module.exports = {
  "new-cap": ["warn"],
  "key-spacing": ["warn"],
  "prefer-const": ["warn"],
  - "arrow-parens": "off",
  // crashes currently: https://github.com/eslint/eslint/issues/6274
  "generator-star-spacing": "off",
  