Update packages

This command will update all the packages listed
to the latest version (specified by the tag
config), respecting the semver constraints of both
your package and its dependencies (if they also
require the same package).

It will also install missing packages.

Note that by default npm update will not update
the semver values of direct dependencies in your
project package.json, if you want to also update
values in package.json you can run:
npm update --save (or add the save=true option
to a configuration file to make that the default
behavior).

npm update [<pkg>...]

aliases: up, upgrade, udpate