expressjs / express

Fast, unopinionated, minimalist web framework for node.

65.0k

JavaScript

Architecture: micro-framework

View Original Source

main

express

lib

router

middleware

application.js

request.js

response.js

test

Structural Architecture

Express provides an incredibly minimal execution footprint. It eschews deep folder layers in favor of a flat, heavily prototyped `lib` structure that delegates heavily to foundational generic routing utilities.

Minimalism. Flat hierarchy emphasizing middleware pass-through logic.

Notable Directories

/lib

The core engine layout mapping request lifecycle.

/lib/router

The foundational layer-stack parser routing mechanisms.

Build Your Own Ecosystem

Learn from express's structure and craft your own software scaffolding.