.eslintrc.json

{
  "parser": "babel-eslint",
  "plugins": [
    "react",
    "jsx-a11y"
  ],
  "extends": "airbnb",
  "rules": {
    "indent": [
      "error",
      4,
      {
        "SwitchCase": 1
      }
    ],
    "arrow-parens": [
      "error",
      "as-needed"
    ],
    "no-underscore-dangle": [
      "error",
      {
        "allow": [
          "_id"
        ]
      }
    ],
    "function-paren-newline": "off",
    "object-curly-spacing": [
      "error",
      "never"
    ],
    "lines-between-class-members": [
      "error",
      "always",
      {
        "exceptAfterSingleLine": true
      }
    ],
    "import/no-extraneous-dependencies": [
      "off"
    ],
    "comma-dangle": [
      "error",
      "never"
    ],
    "max-len": [
      "error",
      120
    ],
    "react/jsx-filename-extension": [
      "error",
      {
        "extensions": [
          ".js"
        ]
      }
    ],
    "react/jsx-tag-spacing": [
      "error",
      {
        "beforeSelfClosing": "never"
      }
    ],
    "react/jsx-indent": [
      "error",
      4
    ],
    "react/jsx-indent-props": [
      "error",
      4
    ],
    "react/destructuring-assignment": "off",
    "jsx-a11y/anchor-is-valid": [
      "off"
    ]
  }
}