.eslintrc

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": ["tsconfig.json"]
  },
  "plugins": [
    // This enables using new lint rules powered by the TypeScript compiler API.
    // https://github.com/typescript-eslint/typescript-eslint
    "@typescript-eslint",
    // This makes it so the IDE reports lint rejections as warnings only. This is
    // better than errors because most lint rejections are not runtime errors. This
    // allows IDE errors to be exclusive for e.g. static type errors which often are
    // reflective of real runtime errors.
    // https://github.com/bfanger/eslint-plugin-only-warn
    "only-warn",
    // This enables the use of a lint rule to reject function declarations. This is
    // preferable as a way to encourage higher order function usage. For example it is not
    // possible to wrap a function declaration with Open Telemetry instrumentation but it is
    // possible to wrap an arrow function since its an expression.
    // https://github.com/TristonJ/eslint-plugin-prefer-arrow
    "prefer-arrow",
    // This enables the use of a lint rule to reject use of @deprecated functions.
    // https://github.com/gund/eslint-plugin-deprecation
    "deprecation",
    // Import sorting integrated into ESLint.
    // https://github.com/lydell/eslint-plugin-simple-import-sort
    "simple-import-sort",
    // https://github.com/microsoft/tsdoc/tree/master/eslint-plugin
    "tsdoc"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "prettier"
  ],
  "overrides": [],
  "rules": {
    "quotes": ["warn", "backtick"],
    "tsdoc/syntax": "warn",
    "simple-import-sort/imports": [
      "warn",
      {
        "groups": []
      }
    ],
    "simple-import-sort/exports": "warn",
    "deprecation/deprecation": "warn",
    "prefer-arrow/prefer-arrow-functions": "warn",
    // TypeScript makes these safe & effective
    "no-case-declarations": "off",
    // Same approach used by TypeScript noUnusedLocals
    "@typescript-eslint/no-unused-vars": ["warn", { "varsIgnorePattern": "^_", "argsIgnorePattern": "^_" }]
  }
}