$ sudo apt-get update
$ sudo apt-get install node-node-expat 

node-node-expat is installed in your system.

Make ensure the node-node-expat package were installed using the commands given below,

$ sudo dpkg-query -l | grep node-node-expat *

You will get with node-node-expat package name, version, architecture and description in a table

node-node-expat package basic information: