jeff@unsw-ThinkPad-T490:code$ mkdir tsapp
jeff@unsw-ThinkPad-T490:code$ cd tsapp/
jeff@unsw-ThinkPad-T490:tsapp$ npm init -y
Wrote to /home/jeff/Desktop/xiaoma视频下载/JS+CDK/code/tsapp/package.json:

{
  "name": "tsapp",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}


jeff@unsw-ThinkPad-T490:tsapp$ ls
package.json

npx tsc main.ts --> generating main.js

node main.js