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Server Side development with Node.js and Koa.js Quick Start Guide

You're reading from   Server Side development with Node.js and Koa.js Quick Start Guide Build robust and scalable web applications with modern JavaScript techniques

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Product type Paperback
Published in Nov 2018
Publisher Packt
ISBN-13 9781789345391
Length 132 pages
Edition 1st Edition
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Olayinka Omole Olayinka Omole
Author Profile Icon Olayinka Omole
Olayinka Omole
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Toc

The application object

The application object in Koa is an object containing the Koa application instance. It also contains a list of the middleware functions in the application. It is responsible for managing and executing the middleware in a cascaded manner. It is also responsible for managing some key aspects of the application, as we will soon see in some of the following examples. Here is an excerpt from the Koa official documentation:

"A Koa application is an object containing an array of middleware functions which are composed and executed in a stack-like manner upon request. Koa is similar to many other middleware systems that you may have encountered such as Ruby's Rack, Connect, and so on—however, a key design decision was made to provide high level sugar at the otherwise low-level middleware layer. This improves interoperability, robustness, and makes...
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