For example I installed express with global (-g) parameter. In node.js/node_modules folder express doesn't exists.
I tried to install it without global parameter and it works perfectly.
How to install it globally?
Thanks.
Installing modules via npm with -g is only for modules that provide command-line utilities, not for making any ordinary module accessible from anywhere.
So if you are looking to use the command-line express project generator utility/command, you need to use npm install -g express-generator instead.
If you want to require('express'); in your application, then you need to install express with npm install express.