.eslintrc

{
  "parser": "babel-eslint",
  "extends": [
    "airbnb",
    "prettier",
    "prettier/flowtype",
    "prettier/react"
  ],
  "plugins": [
    "flowtype"
  ],
  "rules": {
    "comma-dangle" : [2, "always-multiline"],
    "max-len": [1, 120, 2, {"ignoreComments": true}],
    "semi": [2, "never"],
    "new-cap": [2, { "newIsCap": true, "capIsNewExceptions": ["Theme"] }],
    "no-use-before-define": 0,
    "no-underscore-dangle": 0,
    "import/no-extraneous-dependencies": [2, {
      "devDependencies": true,
      "optionalDependencies": false
    }],
    "flowtype/require-return-type": [
        0,
        "always",
        {
            "annotateUndefined": "never"
        }
    ],
    "flowtype/space-after-type-colon": [
        1,
        "always",
        {
          "allowLineBreak": true
        }
    ],
    "flowtype/space-before-type-colon": [
        1,
        "never"
    ],
    "flowtype/type-id-match": [
        1,
        "(^([A-Z][a-z0-9]+)+T$)"
    ],
    "flowtype/define-flow-type": 1,
    "react/jsx-key": 2,
    "react/jsx-handler-names": [1, {
      "eventHandlerPrefix": "handle",
      "eventHandlerPropPrefix": "on"
    }],
    "react/no-direct-mutation-state": [2, "always"],
    "react/prefer-stateless-function": 1,
    "react/jsx-filename-extension": [1, { "extensions": [".js"] }],
    "react/sort-comp": 0
  },
  "settings": {
    "flowtype": {
        "onlyFilesWithFlowAnnotation": true
    }
  },
  "globals": {
    "test": true,
    "expect": true,
    "document": true,
    "window": true
  }
}