.eslintrc.json

// Created by using https://andrebnassis.medium.com/setting-eslint-on-a-react-typescript-project-2021-1190a43ffba as guide
// Fixed JSX no-undef by applying https://stackoverflow.com/a/65828055 this fix
{
  "env": {
    "browser": true,
    "es2021": true,
    "jest": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:@typescript-eslint/recommended",
    "airbnb",
    "prettier"
  ],

  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 12,
    "sourceType": "module"
  },
  "plugins": ["react", "@typescript-eslint"],
  "rules": {
    "comma-dangle": ["error", "never"],
    "no-use-before-define": "off",
    "@typescript-eslint/no-use-before-define": ["error"],
    "react/jsx-filename-extension": ["warn", { "extensions": [".tsx"] }],
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        "ts": "never",
        "tsx": "never"
      }
    ],
    "no-shadow": "off",
    "@typescript-eslint/no-shadow": ["error"],
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      {
        "allowExpressions": true
      }
    ],
    "import/prefer-default-export": "off",
    "import/order": [
      "error",
      {
        "alphabetize": {
          "order": "asc",
          "caseInsensitive": true
        },
        "newlines-between": "always",
        "groups": ["builtin", "external", "parent", "sibling", "index"],
        "pathGroups": [
          {
            "pattern": "react",
            "group": "external",
            "position": "before"
          }
        ],
        "pathGroupsExcludedImportTypes": ["builtin"]
      }
    ],
    "object-curly-newline": [
      "error",
      {
        "ObjectExpression": "always",
        "ObjectPattern": { "multiline": true },
        "ImportDeclaration": "never",
        "ExportDeclaration": { "multiline": true, "minProperties": 3 }
      }
    ]
  },
  "settings": {
    "import/resolver": {
      "typescript": {}
    },
    "react": {
      "version": "detect"
    }
  },
  "globals": { "JSX": "readonly" }
}