.eslintrc.ts

module.exports = {
  env: {
    browser: true,
    es2021: true,
    node: true,
  },
  extends: ["eslint:recommended", "plugin:react/recommended", "plugin:@typescript-eslint/recommended"],
  parser: "@typescript-eslint/parser",
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: "latest",
    sourceType: "module",
    project: "./tsconfig.json",
  },
  plugins: ["react", "@typescript-eslint", "prettier"],
  settings: {
    react: {
      version: "detect",
    },
  },
  rules: {
    // General
    "no-console": "error",
    // TypeScript
    "@typescript-eslint/consistent-type-imports": "error",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/explicit-member-accessibility": "off",
    "@typescript-eslint/indent": "off",
    "@typescript-eslint/member-delimiter-style": "off",
    "@typescript-eslint/no-confusing-void-expression": [
      "error",
      { ignoreArrowShorthand: true, ignoreVoidOperator: true },
    ],
    "no-duplicate-imports": "off",
    "@typescript-eslint/no-duplicate-imports": "error",
    "@typescript-eslint/no-implicit-any-catch": "error",
    "no-invalid-this": "off",
    "@typescript-eslint/no-invalid-this": "error",
    "@typescript-eslint/no-invalid-void-type": "error",
    "no-loop-func": "off",
    "@typescript-eslint/no-loop-func": "error",
    "no-loss-of-precision": "off",
    "@typescript-eslint/no-loss-of-precision": "error",
    "@typescript-eslint/no-parameter-properties": "off",
    "no-redeclare": "off",
    "@typescript-eslint/no-redeclare": "error",
    "no-shadow": "off",
    "@typescript-eslint/no-shadow": "error",
    "no-throw-literal": "off",
    "@typescript-eslint/no-throw-literal": "error",
    "@typescript-eslint/no-unnecessary-boolean-literal-compare": "error",
    "@typescript-eslint/no-unnecessary-condition": "error",
    "@typescript-eslint/no-unnecessary-type-arguments": "error",
    "no-unused-expressions": "off",
    "@typescript-eslint/no-unused-expressions": "error",
    "@typescript-eslint/no-unused-vars": "off",
    "@typescript-eslint/no-use-before-define": ["error", { variables: false }],
    "@typescript-eslint/prefer-enum-initializers": "error",
    "@typescript-eslint/prefer-for-of": "error",
    "@typescript-eslint/prefer-includes": "error",
    "@typescript-eslint/prefer-nullish-coalescing": "error",
    "@typescript-eslint/prefer-optional-chain": "error",
    "@typescript-eslint/prefer-reduce-type-parameter": "error",
    "@typescript-eslint/prefer-string-starts-ends-with": "error",
    "@typescript-eslint/prefer-ts-expect-error": "error",
    "@typescript-eslint/promise-function-async": "error",
    "no-return-await": "off",
    "@typescript-eslint/return-await": "error",
    "@typescript-eslint/strict-boolean-expressions": "error",
    "@typescript-eslint/switch-exhaustiveness-check": "error",

    // React
    "react/jsx-boolean-value": "warn",
    "react/jsx-curly-brace-presence": "warn",
    "react/jsx-fragments": "warn",
    "react/jsx-no-useless-fragment": "warn",
    "react/jsx-uses-react": "off",
    "react/prefer-stateless-function": "warn",
    "react/prop-types": "off",
    "react/react-in-jsx-scope": "off",

    // Functional
    "functional/prefer-readonly-type": [
      "warn",
      {
        allowLocalMutation: true,
        allowMutableReturnType: true,
        ignoreClass: true,
      },
    ],
  },
};