.eslintrc.json

{
  "parser": "babel-eslint",
  "env": {
    "browser": true,
    "es6": true,
    "jest": true,
    "node": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:cypress/recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 2018,
    "ecmaFeatures": {
      "jsx": true
    },
    "sourceType": "module"
  },
  "plugins": [
    "react",
    "import",
    "babel"
  ],
  "settings": {
    "import/resolver": "webpack",
    "react": {
      "createClass": "createReactClass",
      "pragma": "React",
      "version": "16.5.2"
    }
  },
  "rules": {
    "arrow-body-style": ["error", "as-needed"],
    "react/no-array-index-key": 0,
    "react/no-deprecated": 2,
    "react/no-direct-mutation-state": 2,
    "react/no-unused-prop-types": 2,
    "react/prefer-es6-class": 2,
    "react/prefer-stateless-function": 2,
    "react/react-in-jsx-scope": 2,
    "react/jsx-uses-vars": 2,
    "react/jsx-uses-react": 2,
    "react/jsx-closing-bracket-location": [2, "tag-aligned"],
    "react/jsx-key": 1,
    "react/jsx-max-props-per-line": [2, {"maximum": 1, "when": "multiline"}],
    "import/first": 2,
    "import/order": ["error", {"newlines-between": "never"}],
    "import/no-duplicates": 2,
    "import/newline-after-import": 2,
    "import/no-unassigned-import": 2,
    "import/no-unresolved": 2,
    "import/export": 2,
    "import/no-extraneous-dependencies": 2,
    "import/no-mutable-exports": 2,
    "import/named": 2,
    "import/default": 2,
    "import/namespace": 2,
    "import/no-absolute-path": 2,
    "import/no-dynamic-require": 2,
    "import/no-webpack-loader-syntax": 2,
    "import/no-self-import": 2,
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1,
        "flatTernaryExpressions": true
      }
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "no-unused-vars": [
      "error",
      {
        "varsIgnorePattern": "styles"
      }
    ],
    "quotes": [
      "error",
      "single"
    ],
    "jsx-quotes": [
      "error",
      "prefer-double"
    ],
    // redux-saga watchers are wrapped in while(true) -loops
    "no-constant-condition": [
      "error",
      {"checkLoops": false}
    ],
    "babel/object-curly-spacing": 2,
    "semi": [
      "error",
      "never"
    ],
    "comma-dangle": ["error", "never"],
    "max-len": ["error", { "code": 120, "tabWidth": 2, "ignoreUrls": true, "ignoreStrings": true}],
    "no-console": 0
  }
}