.eslintrc

{
  "parser": "babel-eslint",
  "extends": "airbnb",
  "ecmaFeatures": {
    "jsx": true,
    "modules": true
  },
  "env": {
    "browser": true,
    "node": true
  },
  "rules": {
    "semi": [ 2, "never" ],
    "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
    "react/jsx-boolean-value": 0,
    "flowtype/define-flow-type": 1,
    "flowtype/require-parameter-type": 1,
    "flowtype/require-return-type": [
        2,
        "always",
        {
          "excludeArrowFunctions": true,
          "annotateUndefined": "never"
        }
    ],
    "flowtype/space-after-type-colon": [
        1,
        "always"
    ],
    "flowtype/space-before-type-colon": [
        1,
        "never"
    ],
    "flowtype/type-id-match": [
        1,
        "^([A-Z][a-z0-9]+)+Type$"
    ],
    "flowtype/use-flow-type": 1,
    "flowtype/valid-syntax": 1
  },
  "settings": {
    "flowtype": {
        "onlyFilesWithFlowAnnotation": true
    }
  },
  "plugins": [
    "babel",
    "react",
    "flowtype"
  ]
}