.eslintrc.json

{
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:react-hooks/recommended"
  ],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "plugins": ["react", "@typescript-eslint", "prettier"],
  "rules": {
    // deprecated rules
    "react/react-in-jsx-scope": "off",
    "no-unused-vars": "off",
    // rules we want
    "@typescript-eslint/no-unused-vars": ["warn"],
    "react/display-name": "off",
    "indent": ["error", 2],
    "linebreak-style": ["error", "unix"],
    "quotes": ["error", "double"],
    "semi": ["error", "always"],
    "prettier/prettier": [
      "warn",
      {
        "semi": true,
        "tabWidth": 2,
        "singleQuote": false,
        "endOfLine": "lf",
        "printWidth": 80,
        "tailingComma": "none"
      }
    ]
  }
}