Backend

From your first `console.log` to async iterators, modules, and modern web APIs — the modern way to learn JavaScript.

Add static types to JavaScript. Catch bugs before they happen, build APIs your editor understands, and use the type system to enforce design.

Run JavaScript outside the browser. Build APIs, CLIs, and tools with Node's standard library, the npm ecosystem, and the patterns real production systems run on.

Build production APIs and web apps with Express. Routing, middleware, REST, auth, data, real-time — the patterns that power most Node backends in the wild.

Build production server-side apps with NestJS. Modules, providers, dependency injection, pipes, guards, interceptors, microservices, GraphQL — the complete framework that powers many large Node backends in the wild.

Build production Node APIs with Fastify. Schema-based routing, JSON Schema validation, encapsulated plugins, hooks, decorators, swagger, websockets, and a serialization story that's among the fastest in the JS ecosystem.