.eslintrc

{
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {
      "binaryLiterals": true,
      "blockBindings": true,
      "defaultParams": true,
      "forOf": true,
      "generators": true,
      "impliedStrict": true,
      "modules": true,
      "objectLiteralComputedProperties": true,
      "objectLiteralDuplicateProperties": true,
      "objectLiteralShorthandMethods": true,
      "experimentalObjectRestSpread": true,
      "objectLiteralShorthandProperties": true,
      "octalLiterals": true,
      "regexUFlag": true,
      "regexYFlag": true,
      "templateStrings": true,
      "unicodeCodePointEscapes": true,
      "jsx": true
    },
    "sourceType": "module"
  },

  "env": {
    "es6": true,
    "node": true,
    "browser": true
  },

  "globals": {
    "test": true,
    "describe": true,
    "expect": true
  },

  "plugins": [
    "react"
  ],

  "extends": "eslint:recommended",
  "overrides": [
    {
      "files": [ "*.js" ],
      "excludedFiles": "test/*.js"
    }
  ],
  "rules": {
    "arrow-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "eqeqeq": "error",
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true
      }
    ],
    "max-depth": ["error", 4],
    "max-len": [
      "error",
      {
        "code": 120,
        "ignoreTrailingComments": true,
        "ignoreComments": true,
        "ignoreUrls": true
      }
    ],
    "max-lines": [
      "error",
      {
        "max": 500,
        "skipBlankLines": true,
        "skipComments": true
      }
    ],
    "max-nested-callbacks": ["error", 3],
    "no-array-constructor": "error",
    "no-new-object": "error",
    "no-new-wrappers": "error",
    "max-params": ["error", 4],
    "no-trailing-spaces": "error",
    "quotes": [
      "error",
      "single",
      {
        "allowTemplateLiterals": true
      }
    ],
    "quote-props": [
      "error", "as-needed"
    ],
    "semi": ["error", "always"],
    "semi-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "semi-style": ["error", "last"],
    "space-before-blocks": ["error", "always"],

    "space-in-parens": ["error", "never"],
    "space-infix-ops": [
      "error",
      {
        "int32Hint": false
      }
    ],

    /* React */
    "react/display-name": 0,
    "react/jsx-boolean-value": 1,
    "react/jsx-no-undef": 1,
    "react/jsx-sort-props": 1,
    "react/jsx-uses-react": 1,
    "react/jsx-uses-vars": 1,
    "react/no-did-mount-set-state": 1,
    "react/no-did-update-set-state": 1,
    "react/no-multi-comp": 1,
    "react/no-unknown-property": 1,
    "react/prop-types": 1,
    "react/react-in-jsx-scope": 0,
    "react/self-closing-comp": 1,
    "react/jsx-wrap-multilines": 1
  }
}