.eslintrc.json

{
  "settings": {
    "react": {
      "createClass": "createReactClass", // Regex for Component Factory to use,
      // default to "createReactClass"
      "pragma": "React", // Pragma to use, default to "React"
      "version": "detect", // React version. "detect" automatically picks the version you have installed.
      // You can also use `16.0`, `16.3`, etc, if you want to override the detected value.
      // default to latest and warns if missing
      // It will default to "detect" in the future
      "flowVersion": "0.53" // Flow version
    },
    "propWrapperFunctions": [
      // The names of any function used to wrap propTypes, e.g. `forbidExtraProps`. If this isn't set, any propTypes wrapped in a function will be skipped.
      "forbidExtraProps",
      { "property": "freeze", "object": "Object" },
      { "property": "myFavoriteWrapper" }
    ],
    "linkComponents": [
      // Components used as alternatives to <a> for linking, eg. <Link to={ url } />
      "Hyperlink",
      { "name": "Link", "linkAttribute": "to" }
    ]
  },
  "parser": "babel-eslint",
  "env": {
    "browser": true,
    "es2020": true,
    "jest": true,
    "node": true
  },
  "extends": ["eslint:recommended", "plugin:react/recommended"],

  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 11,
    "sourceType": "module"
  },
  "plugins": ["react"],

  "rules": {
    "no-unused-vars": "warn",
    "max-len": [
      "error",
      {
        "code": 120,
        "ignoreUrls": true,
        "ignoreStrings": true,
        "ignoreTemplateLiterals": true
      }
    ],
    "import/prefer-default-export": 0,
    "react/prop-types": 0,
    "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
    "react/state-in-constructor": 0,
    "react/jsx-props-no-spreading": "off",
    "no-plusplus": [2, { "allowForLoopAfterthoughts": true }]
  }
}