ESLint vs TypeScript

npm install -D eslint @eslint/js typescript-eslint

# eslint.config.js (flat config)
import js from '@eslint/js';
import tseslint from 'typescript-eslint';

export default tseslint.config(
  js.configs.recommended,
  ...tseslint.configs.strict,
);

# Install and configure
npm install -D typescript
npx tsc --init

# tsconfig.json (strict mode recommended)
{ "compilerOptions": { "strict": true, "target": "ES2022", "module": "NodeNext" } }

# Compile
npx tsc