.eslintrc.json

{
    "extends": ["standard", "standard-react", "plugin:flowtype/recommended"],
    "parser": "babel-eslint",
    "plugins": [
      "react",
      "flowtype"
    ],
    "rules": {
      "flowtype/delimiter-dangle": [
        2,
        "never"
      ],
      "flowtype/no-primitive-constructor-types": 2,
      "flowtype/object-type-delimiter": [
        2,
        "comma"
      ],
      "flowtype/require-parameter-type": 2,
      "flowtype/require-return-type": [
        2,
        "always",
        {
          "annotateUndefined": "never",
           "excludeArrowFunctions": "expressionsOnly"
        }
      ],
      "flowtype/require-valid-file-annotation": 2,
      "flowtype/semi": [
        2,
        "never"
      ],
      "flowtype/use-flow-type": 1,
      "flowtype/valid-syntax": 1,

      "react/jsx-uses-react": "error",
      "react/jsx-uses-vars": "error"
    },
    "settings": {
      "flowtype": {
        "onlyFilesWithFlowAnnotation": true
      }
    },
    "parserOptions": {
      "ecmaFeatures": {
          "experimentalObjectRestSpread": true,
          "jsx": true
      }
    }
}