@types/koa
Advanced tools
Package description
The @types/koa package provides TypeScript type definitions for Koa, a web framework designed for building efficient and scalable Node.js applications. It enables TypeScript developers to work with Koa in a type-safe manner, offering autocompletion and type checking for Koa's API.
Application Creation
This feature allows developers to create a new Koa application. The type definitions ensure that the application is created with the correct structure expected by Koa.
import Koa from 'koa';
const app = new Koa();Middleware
Middleware functions can be added to the application. These functions can perform operations, modify the request and response objects, end the request-response cycle, and call the next middleware in the stack. Type definitions help ensure middleware functions adhere to the expected signature.
app.use(async (ctx, next) => {
ctx.body = 'Hello World';
await next();
});Context Manipulation
This feature demonstrates how to manipulate the context (`ctx`) to send responses. The type definitions provide autocompletion and type checking for context properties and methods.
app.use(async ctx => {
ctx.body = { message: 'Hello World' };
});Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. Unlike @types/koa, which is specifically for Koa and requires separate type definitions, Express itself is written in JavaScript but has a separate @types/express package for TypeScript support.
Fastify is a fast and low overhead web framework for Node.js. It is designed to be as fast as possible and to provide an excellent developer experience. It has built-in TypeScript support, offering a different approach compared to @types/koa, where types are provided externally.
Hapi is a rich framework for building applications and services, allowing developers to focus on writing reusable application logic instead of spending time building infrastructure. Similar to Koa, it has a vibrant ecosystem and plugins. For TypeScript users, @types/hapi provides the type definitions, similar to how @types/koa works for Koa.
Readme
npm install --save @types/koa
This package contains type definitions for koa (http://koajs.com).
Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/koa.
These definitions were written by jKey Lu, Brice Bernard, harryparkdotio, Wooram Jun, Christian Vaagland Tellnes, Piotr Kuczynski, and vnoder.
FAQs
TypeScript definitions for koa
The npm package @types/koa receives a total of 1,571,439 weekly downloads. As such, @types/koa popularity was classified as popular.
We found that @types/koa demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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