.eslintrc.js

module.exports = {
  root: true,
  parser: "@typescript-eslint/parser",
  extends: [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "prettier",
  ],
  plugins: ["@typescript-eslint", "jest"],
  env: {
    es6: true,
    browser: true,
    node: true,
    jest: true,
  },
  rules: {
    semi: "error",
    "no-unreachable-loop": "warn",
    "no-unsafe-optional-chaining": "warn",
    eqeqeq: "error",
    "no-alert": "error",
    "prefer-spread": "error",
    "no-duplicate-imports": "warn",
    "no-eval": "error",
    "no-implied-eval": "error",
    "no-extend-native": "warn",
    "no-new-wrappers": "error",
    "no-proto": "error",
    "no-script-url": "error",
    "no-self-compare": "warn",
    "no-useless-catch": "warn",
    "no-throw-literal": "error",
    "no-var": "warn",
    "no-labels": "error",
    "no-undefined": "off",
    "no-new-object": "error",
    "no-multi-assign": "warn",
    "prefer-const": "warn",
    "prefer-numeric-literals": "warn",
    "prefer-object-spread": "error",
    "prefer-rest-params": "error",
    "prefer-exponentiation-operator": "error",
    "no-lonely-if": "error",
    radix: "warn",
    camelcase: "warn",
    "new-cap": "error",
    quotes: ["warn", "double", { allowTemplateLiterals: true }],
    "no-void": "error",
    "spaced-comment": ["warn", "always"],
    "eol-last": "warn",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/prefer-optional-chain": "error",
    "@typescript-eslint/prefer-for-of": "error",
    "@typescript-eslint/no-namespace": [
      "error",
      { allowDefinitionFiles: true },
    ],
  },
  overrides: [
    {
      files: ["*.browser.js"],
      env: {
        browser: true,
      },
    },
  ],
};