Next generation web framework for node.js
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Why people like Koa
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Koa aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Through leveraging generators Koa allows you to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware.

Koa's Features
  • Provides 3 different kinds of functions as middleware
  • common function
  • async function
  • generator function

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