How do you reinstall an app's dependencies using npm?

Question

Is there a simple way to reinstall all packages that my app depends on (i.e. they are in my apps node_modules folder)?

Answer 1

The right way is to execute npm update. It's a really powerful command, it updates the missing packages and also checks if a newer version of package already installed can be used.

Read Intro to NPM to understand what you can do with npm.