This example showcases how to make a simple Hello World server using Koa in Typescript.
import Router from '@koa/router'; import koaBody from 'koa-body'; import Koa from 'koa'; const router = new Router(); const app = new Koa(); app.use(koaBody()); router.get('/', (ctx) => { ctx.body = "Hello world"; }); app .use(router.routes()) .use(router.allowedMethods()); if (!module.parent) app.listen(3000);
{ "compilerOptions": { "strict": true, "target": "es2020", "module": "commonjs", "moduleResolution": "node", "esModuleInterop": true, "sourceMap": true, "resolveJsonModule": true, "isolatedModules": true, "skipLibCheck": true, "outDir": "./build", "rootDir": "./", "lib": [ "esnext" ], "forceConsistentCasingInFileNames": true }, "include": [ "**/*.ts", "types/*.ts" ], "exclude": [ "node_modules" ] }
{ "name": "KoaTypescriptTest", "version": "1.0.0", "description": "", "scripts": { "start": "./node_modules/.bin/tsnd --respawn server.ts", "build": "./node_modules/.bin/tsc -b tsconfig.json" }, "dependencies": { "@koa/router": "^12.0.0", "koa": "^2.14.1", "koa-body": "^6.0.1" }, "devDependencies": { "@types/koa": "^2.13.5", "@types/koa__router": "^12.0.0", "@types/node": "^18.11.17", "ts-node-dev": "^1.1.8", "typescript": "^4.9.4" } }