.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true,
    "jest": true
  },
  "extends": "eslint:recommended",
  "parser": "babel-eslint",
  "ignorePatterns": [
    "../sample/src/components/**/*.js"
  ],
  "parserOptions": {
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "jsx": true,
      "modules": true
    },
    "sourceType": "module"
  },
  "plugins": [
    "react",
    "mui-unused-classes"
  ],
  "rules": {
    "import/no-anonymous-default-export": "off",
    "indent": [
      "error",
      2,
      {
        "ignoredNodes": [
          "ConditionalExpression"
        ]
      }
    ],
    "mui-unused-classes/unused-classes": 1,
    "padding-line-between-statements": [
      "error",
      {
        "blankLine": "always",
        "prev": "*",
        "next": [
          "function",
          "multiline-const"
        ]
      },
      {
        "blankLine": "always",
        "prev": "*",
        "next": [
          "return"
        ]
      }
    ],
    "comma-dangle": [
      "error",
      "only-multiline"
    ],
    "no-unused-vars": "error",
    "no-spaced-func": "error",
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "max-len": [
      "error",
      160
    ],
    "react/jsx-uses-react": 0,
    "react/jsx-uses-vars": 2,
    "react/jsx-closing-tag-location": "off",
    "semi": [
      "error",
      "never"
    ],
    "no-console": [
      "warn",
      {
        "allow": [
          "warn",
          "error"
        ]
      }
    ],
    "no-underscore-dangle": "off",
    "newline-per-chained-call": "off",
    "no-restricted-syntax": "off",
    "no-param-reassign": "off",
    "react/react-in-jsx-scope": 0,
    "react/jsx-max-props-per-line": [
      1,
      {
        "maximum": 3,
        "when": "always"
      }
    ]
  }
}