Eslint file

eslint.json

{
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": [
    "airbnb"
  ],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "plugins": [
    "react"
  ],
  "rules": {
    "react/jsx-filename-extension": ["warn", { "extensions": [".js", ".jsx"] }],
    "import/no-named-as-default": "off",
    "import/no-named-as-default-member": "off",
    "indent": ["error", 2, {
      "SwitchCase": 1,
      "MemberExpression": 1,
      "FunctionExpression": {"body": 1, "parameters": 2},
      "ObjectExpression": 1,
      "ImportDeclaration": 1
    }],
    "no-constant-condition": ["error"],
    "block-scoped-var": "warn",
    "default-case": "error",
    "eqeqeq": ["error", "always"],
    "no-alert": "error",
    "max-len": ["error", { "code": 120 }]
  }
}

package.json

"husky": {
    "hooks": {
      "pre-commit": "lint-staged"
    }
  },
  "lint-staged": {
    "**/*.js": [
      "eslint --fix",
      "prettier-eslint --write",
      "git add"
    ]
  }