Is there a way to use npm scripts to run tsc -watch && nodemon --watch?

Question

I'm looking for a way to use npm scripts to run tsc --watch && nodemon --watch at the same time. I can run this commands independently, but when I want run both of them, only the first one is executed. eg. if I have this script:

"scripts": {    
    "runDeb": "set NODE_ENV=development&& tsc --watch && nodemon --watch"
  }

tsc --watch is executed but nodemon is never called, and vice versa.

Answer 1

I think what you want is something like this (my current setup):

"scripts": {
    "compile": "tsc && node app.js",
    "dev": "./node_modules/nodemon/bin/nodemon.js -e ts  --exec \"npm run compile\""
}

I created two scripts "compile" and "dev". To start developing you simply run npm run dev which starts nodemon and makes it watch .ts files (using the -e flag). Then, every time a .ts file changes nodemon will exec the compile task which basically compiles and runs the node app.

While using concurrently is a good option, my setup guarantees that tsc's work is done before attempting to execute the resulting .js files.