This is just a study repo about npm scripts and bash parameter expansion, it contains some examples of using env-vars as scripts, it also includes concurrently to run all scripts.

I created it to understand some behaviours of npm scripts and use it with Nx monorepos and heroku

Running only backend

PROJECT_NAME=backend npm run start

Running only frontend

PROJECT_NAME=frontend npm run start

Running all apps

npm run start

Building backend

PROJECT_NAME=backend npm run build

Building frontend

PROJECT_NAME=frontend npm run build

Building all apps

npm run build

https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html https://stackoverflow.com/questions/2013547/assigning-default-values-to-shell-variables-with-a-single-command-in-bash