.eslintrc.json

{
  "env": {
    "browser": true,
    "webextensions": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:react-hooks/recommended",
    "plugin:react-redux/recommended",
    "plugin:jsx-a11y/recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:perfectionist/recommended-natural",
    "plugin:import/recommended",
    "plugin:import/typescript",
    "prettier"
  ],
  "overrides": [
    {
      "files": ["./postcss.config.js", "./webpack.config.js"],
      "env": {
        "browser": false,
        "webextensions": false,
        "node": true
      }
    },
    {
      "files": ["*.ts", "*.tsx"],
      "parserOptions": {
        "project": ["./tsconfig.json"]
      },
      "rules": {
        "no-restricted-syntax": [
          "error",
          {
            "selector": "TSEnumDeclaration",
            "message": "Don't declare enums, use union types instead"
          }
        ],
        "@typescript-eslint/array-type": [
          "warn",
          {
            "default": "generic"
          }
        ],
        "@typescript-eslint/consistent-type-assertions": [
          "error",
          {
            "assertionStyle": "never"
          }
        ],
        "@typescript-eslint/consistent-type-definitions": ["warn", "type"],
        "@typescript-eslint/consistent-type-imports": ["warn", { "prefer": "type-imports" }],
        "@typescript-eslint/method-signature-style": "warn",
        "@typescript-eslint/explicit-function-return-type": "warn",
        "@typescript-eslint/no-unnecessary-boolean-literal-compare": "warn",
        "@typescript-eslint/strict-boolean-expressions": [
          "error",
          {
            "allowString": false,
            "allowNumber": false,
            "allowNullableObject": false,
            "allowNullableBoolean": false,
            "allowNullableString": false,
            "allowNullableNumber": false,
            "allowAny": false
          }
        ],
        "@typescript-eslint/switch-exhaustiveness-check": "error"
      }
    }
  ],
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint", "react", "react-hooks", "react-redux", "perfectionist", "unused-imports"],
  "root": true,
  "rules": {
    "import/no-cycle": "error",
    "react/function-component-definition": [
      "warn",
      {
        "namedComponents": "arrow-function",
        "unnamedComponents": "arrow-function"
      }
    ],
    "react/jsx-props-no-spreading": "warn",
    "react/no-access-state-in-setstate": "error",
    "react/prop-types": "off",
    "react/react-in-jsx-scope": "off",
    "react-redux/useSelector-prefer-selectors": "off",
    "unused-imports/no-unused-imports": "warn",
    "unused-imports/no-unused-vars": "warn"
  },
  "settings": {
    "react": {
      "version": "detect"
    }
  }
}