message: Add whitespace rules to eslint.
diff: "no-console": 1,
  "no-constant-condition": 2,
  "no-debugger": 1,
  - "no-else-return": "error",
  + "no-else-return": ["error"],
  "no-global-strict": 0,
  + "no-irregular-whitespace": ["error"],
  "no-multi-spaces": [2],
  + "no-trailing-spaces": ["error"],
  "no-underscore-dangle": 0,
  "no-unused-vars": ["error", {"varsIgnorePattern": "React"}],
  "no-use-before-define": 1,
  