typescript with nodemon

1npm i -D typescript ts-node nodemon @types/node

1nodemon --watch "src/**" --ext "ts,json" --ignore "src/**/*.spec.ts" --exec "ts-node src/index.ts"
2

1watch that video, very useful
2
3add this to your scripts object in package.json:
4
5"start:ts": "tsc -w",
6"start:js": "nodemon build/index.js",
7"start": "concurrently npm:start:*"
8
9in tsconfig.json uncomment "rootDir" and "outDir"
10assuming your ts files will be in '/src' and
11your js files compiled to '/build', change the configs to:
12
13"rootDir": "./src", 
14"outDir": "./build",
15
16make sure you have typescript, nodemon, and concurrently installed either
17in your project, or globally
18
19then, in your project folder, run in terminal: 'npm start'