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

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.