My standard ESLint configuration for modern Node.js + TypeScript projects. It uses the new flat-config format, typescript-eslint recommended rules, Node globals, and CommonJS module settings.

eslint.config.mts

import globals from "globals";
import tseslint from "typescript-eslint";
import { defineConfig } from "eslint/config";

export default defineConfig([
  ...tseslint.configs.recommended,
  {
    files: ["**/*.{js,cjs,mjs,ts,cts,mts}"],
    languageOptions: {
      sourceType: "commonjs",
      globals: globals.node,
    },
    rules: {
      "@typescript-eslint/no-unused-vars": ["warn", { argsIgnorePattern: "^_" }],
    },
  },
]);