.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module",
    "ecmaFeatures": {
      // Allows for the parsing of JSX
      "jsx": true
    }
  },
  "plugins": ["import", "prefer-arrow"],
  "ignorePatterns": ["node_modules/**/*"],
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "extends": [
    "plugin:react/recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:react-hooks/recommended",
    "plugin:prettier/recommended",
    "prettier"
  ],
  "rules": {
    "prettier/prettier": ["error", {
      "semi": false,
      "singleQuote": false,
      "printWidth": 100,
      "trailingComma": "none",
      "arrowParens": "avoid",
      "endOfLine": "auto"
    }],
    // Can break code with auto-fix option, we are checking it separately (see package.json lint-hooks script)
    "react-hooks/exhaustive-deps": 0,
    "no-console": [
      "warn",
      {
        "allow": ["error"]
      }
    ],
    "no-alert": "error",
    "no-debugger": "error",
    "import/no-extraneous-dependencies": ["error", { "devDependencies": false }],
    "react/prop-types": 0,
    "@typescript-eslint/no-non-null-assertion": 0,
    "@typescript-eslint/no-unused-vars": "error",
    "@typescript-eslint/no-explicit-any": "warn",
    "react/jsx-uses-react": "off",
    "react/react-in-jsx-scope": "off",
    "prefer-promise-reject-errors": "error",
    "prefer-const": ["error", {
      "destructuring": "all",
      "ignoreReadBeforeAssign": false
    }],
    "import/extensions": ["error", {"tsx": "never", "json": "always", "scss": "always"}],
    "import/no-unresolved": "off", // does not work with foo/index.ts
    "import/imports-first": ["error", "absolute-first"],
    "no-bitwise": "error",
    "@typescript-eslint/no-shadow": "error",
    "no-array-constructor": "error",
    "no-caller": "error",
    "no-class-assign": "error",
    "no-cond-assign": "error",
    "no-useless-escape": "error",
    "no-useless-return": "error",
    "no-duplicate-case": "error",
    "no-duplicate-imports": "error",
    "no-dupe-args": "error",
    "no-dupe-keys": "error",
    "no-unused-expressions": "error",
    "arrow-body-style": ["error", "as-needed"],
    "prefer-arrow/prefer-arrow-functions": [
      "error",
      {
        "disallowPrototype": true,
        "singleReturnOnly": false,
        "classPropertiesAllowed": false
      }
    ],
    "@typescript-eslint/no-var-requires": "error",
    "react/jsx-props-no-spreading": "off",
    "no-implicit-coercion": ["error", {"boolean": false}],
    "no-param-reassign": ["error", {"props":  true}],
    "no-process-env": "error"
  }
}