Babel 노드 + Typescript 빼기 TS 노드

npm i -D @babel/core @babel/node @babel/preset-env @babel/preset-typescript typescript

"scripts": {
  "start": "babel-node -x .ts -- src/app.ts",
}

module.exports = {
    presets: [
        '@babel/preset-typescript',
        [
            '@babel/preset-env',
            {
                targets: {
                    node: 'current',
                },
            },
        ],
    ],
}

import Koa from 'koa'
const app = new Koa()

// response
app.use(ctx => {
    ctx.body = 'Hello Koa'
})

app.listen(3000)