Babel Node + Typescript minus TS Node

If you want to use typescript with babel-node, here is how you do it:

install dependencies

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

setup npm script

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

create a babel.config.js

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

create a src/app.ts, in this example I use koa

import Koa from 'koa' const app = new Koa() // response app.use(ctx => { ctx.body = 'Hello Koa' }) app.listen(3000) 

finally npm start and boom, it just works.

This solution comes in handy when you are tight on memory and you want to avoid ts-node

update: simply use tsx, there is no need to setup anything, just run: npx tsx src/app.ts