How to avoid global installs with NPM scripts

Recently, I heard from a friend that he doesn’t know how to use Gulp and TypeScript locally, he only knows how to install them globally. I thought it could be an issue for others, and that’s why I decided to write this post. Using globally installed NPM packages can be very problematic, especially if you need these in different versions in a variety of projects. If you rely on global packages you don’t know what the dependencies of your project really are.…