@types/koa-router

What is @types/koa-router?

@types/koa-router provides TypeScript type definitions for the koa-router package, which is a routing middleware for Koa, a web framework for Node.js. It allows developers to define routes and handle HTTP requests with a clean and organized syntax.

What are @types/koa-router's main functionalities?

Defining Routes

This feature allows you to define routes for your Koa application. In this example, a GET route is defined for the path '/hello', which responds with 'Hello World'.

const Router = require('koa-router');
const router = new Router();

router.get('/hello', async (ctx) => {
  ctx.body = 'Hello World';
});

module.exports = router;

Route Parameters

This feature allows you to define routes with parameters. In this example, a GET route is defined for the path '/users/:id', where ':id' is a route parameter. The route handler extracts the 'id' parameter from the request and responds with it.

const Router = require('koa-router');
const router = new Router();

router.get('/users/:id', async (ctx) => {
  const userId = ctx.params.id;
  ctx.body = `User ID: ${userId}`;
});

module.exports = router;

Middleware

This feature allows you to use middleware functions with your routes. In this example, a logger middleware is defined that logs the HTTP method and URL of each request. The middleware is applied to all routes using 'router.use'.

const Router = require('koa-router');
const router = new Router();

const logger = async (ctx, next) => {
  console.log(`${ctx.method} ${ctx.url}`);
  await next();
};

router.use(logger);

router.get('/hello', async (ctx) => {
  ctx.body = 'Hello World';
});

module.exports = router;

Other packages similar to @types/koa-router

@types/express

@types/express provides TypeScript type definitions for the Express framework, which is another popular web framework for Node.js. Express is known for its simplicity and flexibility, and it also supports routing and middleware. Compared to koa-router, Express has a larger community and more extensive documentation.

@types/hapi__hapi

@types/hapi__hapi provides TypeScript type definitions for the Hapi framework, which is a rich framework for building applications and services. Hapi is known for its powerful plugin system and configuration-driven approach. Compared to koa-router, Hapi offers more built-in features and a different approach to handling routes and middleware.

README

Installation

npm install --save @types/koa-router

Summary

This package contains type definitions for koa-router (https://github.com/alexmingoia/koa-router#readme).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/koa-router.

Additional Details

• Last updated: Mon, 20 Nov 2023 23:36:24 GMT
• Dependencies: @types/koa

Credits

These definitions were written by Jerry Chin, Pavel Ivanov, JounQin, Romain Faust, Guillaume Mayer, Andrea Gueugnaut, and Yves Kaufmann.