快速搭建 Koa2 + TS 服务器

{
  "name": "myweb",
  "version": "1.0.0",
  "description": "",
  "main": "",
  "scripts": {
    "start": "ts-node index.ts"
  },
  "author": "nero",
  "license": "ISC",
  "devDependencies": {
    "@types/koa": "^2.11.3",
    "@types/node": "^14.0.12",
    "koa": "^2.12.0",
    "ts-node": "^8.10.2",
    "typescript": "^3.9.5"
  }
}

import * as Koa from "koa";

const app = new Koa();

app.use(async ctx => {
    ctx.body = ‘Hello World‘;
});

//设置监听端口
app.listen(3000, () => {
    console.log("服务器开启 127.0.0.1:3000");
});