Koa is an expressive HTTP middleware framework for Node.js. It provides a robust foundation for web applications and APIs without bundling middleware.
This is free and open source software.
Key Features
- Uses a cascading middleware stack that enables downstream actions and upstream response manipulation.
- Supports asynchronous functions and Promise-based middleware.
- Provides a Context object encapsulating each HTTP request and response.
- Includes content negotiation, redirection and normalisation of Node.js inconsistencies.
- Delegates to Node.js request and response objects for clean stream handling.
- Offers default error handling.
- Provides a small core without bundled middleware.
- Supports CommonJS and ECMAScript modules.
Website: github.com/koajs/koa
Support:
Developer: Koa contributors
License: MIT License
Koa is written in JavaScript. Learn JavaScript with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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