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Koa
Koa

252
184
+ 1
2
NestJS
NestJS

127
129
+ 1
60
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Koa vs NestJS: What are the differences?

Developers describe Koa as "Next generation web framework for node.js". 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. On the other hand, NestJS is detailed as "A progressive Node.js framework for building efficient and scalable server-side applications by @kammysliwiec". Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript (preserves compatibility with pure JavaScript) and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming) Under the hood, Nest makes use of Express, but also, provides compatibility with a wide range of other libraries, like e.g. Fastify, allowing for easy use of the myriad third-party plugins which are available..

Koa and NestJS are primarily classified as "Microframeworks (Backend)" and "Frameworks (Full Stack)" tools respectively.

Some of the features offered by Koa are:

  • Provides 3 different kinds of functions as middleware
  • common function
  • async function

On the other hand, NestJS provides the following key features:

  • Extensible - Gives you true flexibility by allowing use of any other libraries thanks to modular architecture.
  • Versatile - An adaptable ecosystem that is a fully-fledged backbone for all kinds of server-side applications.
  • Progressive - Takes advantage of latest JavaScript features, bringing design patterns and mature solutions to node.js world.

Koa and NestJS are both open source tools. It seems that Koa with 26.9K GitHub stars and 2.47K forks on GitHub has more adoption than NestJS with 18.3K GitHub stars and 1.31K GitHub forks.

According to the StackShare community, Koa has a broader approval, being mentioned in 62 company stacks & 170 developers stacks; compared to NestJS, which is listed in 19 company stacks and 70 developer stacks.

What is Koa?

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.

What is NestJS?

Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript (preserves compatibility with pure JavaScript) and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming). Under the hood, Nest makes use of Express, but also, provides compatibility with a wide range of other libraries, like e.g. Fastify, allowing for easy use of the myriad third-party plugins which are available.
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      What are some alternatives to Koa and NestJS?
      ExpressJS
      Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.
      Flask
      Flask is intended for getting started very quickly and was developed with best intentions in mind.
      Django REST framework
      It is a powerful and flexible toolkit that makes it easy to build Web APIs.
      Sinatra
      Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.
      hapi
      hapi is a simple to use configuration-centric framework with built-in support for input validation, caching, authentication, and other essential facilities for building web applications and services.
      See all alternatives
      Decisions about Koa and NestJS
      Antonio Kobashikawa
      Antonio Kobashikawa
      Web developer | Blogger | Freelancer at Rulo Kobashikawa | 4 upvotes 38.4K views
      Koa
      Koa
      ES6
      ES6
      JavaScript
      JavaScript
      Ionic
      Ionic
      Vue.js
      Vue.js
      MongoDB
      MongoDB
      ExpressJS
      ExpressJS
      Node.js
      Node.js

      We are using Node.js and ExpressJS to build a REST services that is middleware of a legacy system. MongoDB as database. Vue.js helps us to make rapid UI to test use cases. Frontend is build for mobile with Ionic . We like using JavaScript and ES6 .

      I think next step could be to use Koa but I am not sure.

      See more
      Interest over time
      Reviews of Koa and NestJS
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      How developers use Koa and NestJS
      Avatar of Dave Woolfenden
      Dave Woolfenden uses KoaKoa

      As a smaller, more expressive, and more robust foundation for web applications and APIs.

      Avatar of NaoLogic
      NaoLogic uses NestJSNestJS

      All the REST API is written in NestJS

      How much does Koa cost?
      How much does NestJS cost?
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      Pricing unavailable
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