.eslintrc

{
  "parser": "babel-eslint",
  "extends": [
    "airbnb",
    "prettier",
    "prettier/flowtype",
    "prettier/react"
  ],
  "plugins": [
    "flowtype",
    "prettier"
  ],
  "env": {
    "es6": true,
    "node": true,
    "browser": true,
    "jest": true
  },
  "settings": {
    "import/resolver": {
      "babel-module": {}
    },
    "flowtype": {
      "onlyFilesWithFlowAnnotation": true
    }
  },
  "rules" : {
    "prettier/prettier": "error",

    // import/no-duplicates already does this.
    "no-duplicate-imports": 0,

    "react/prop-types": 0,
    "react/forbid-prop-types": 1,
    "react/require-default-props": "off",

    // warn when using bind() or arrow functions in JSX props
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-bind.md
    "react/jsx-no-bind": ["warn", {
      "ignoreRefs": true,
      "allowArrowFunctions": false,
      "allowBind": false
    }],

    // Forbid the use of dev packages
    // https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-extraneous-dependencies.md
    "import/no-extraneous-dependencies": ["error", {
      "devDependencies": ["!**/*.test.js", "!**/*.spec.js"]
    }],
    "import/named": 1,
    "import/namespace": 1,
    "import/default": 1,
    "import/export": 1,
    "import/imports-first": 1,
    "import/no-duplicates": 1,
    "import/prefer-default-export": 1,
    "import/order": [
      "error", {
        "groups": [
          "builtin",
          "external",
          "internal",
          "parent",
          "sibling",
          "index"
        ],
        "newlines-between": "always"
      }
    ],
    "import/no-unresolved": 1,

    // enforce braces in arrow function bodies
    // http://eslint.org/docs/rules/arrow-body-style
    "arrow-body-style": ["warn", "as-needed"],
    "no-mixed-operators": [
      "error", {
        "allowSamePrecedence": true
      }
    ],

    "no-debugger": ["warn"],
    "global-require": 0,
    "no-param-reassign": [2, { 
      "props": false
    }],

    // prevent jsx-a11y error for Link router component without href param
    // https://github.com/ReactTraining/react-router/issues/5598
    "jsx-a11y/anchor-is-valid": [ "error", {
      "components": [ "Link" ],
      "specialLink": [ "to" ]
    }],

    /* FLOWTYPE RULES */
    "flowtype/define-flow-type": 1,
    "flowtype/use-flow-type": 1,
    "flowtype/valid-syntax": 1
  },
  "globals" : {
    "window": true,
    "google": true /* because of added and initialized Google Maps package */
  }
}