.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true
  },
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "plugins": ["react", "@typescript-eslint", "prettier"],
  "extends": [
    "plugin:react/recommended",
    "airbnb",
    "plugin:prettier/recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "rules": {
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        "js": "never",
        "jsx": "never",
        "ts": "never",
        "tsx": "never"
      }
    ],
    "prettier/prettier": "error",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/no-unused-vars": "off",
    "react/jsx-filename-extension": [
      1,
      { "extensions": [".js", ".jsx", ".ts", ".tsx"] }
    ]
  },
  "settings": {
    "import/resolver": {
      "node": {
        "extensions": [".js", ".jsx", ".ts", ".tsx"]
      }
    }
  }
}