$ sudo npm install hashmap
$ sudo npm install -g hashmap

If want to update the hashmap package execute the command as below,

$ sudo npm update hashmap

Update package globally,

$ npm install -g hashmap

Git clone:

$ sudo  git clone https://github.com/rektide/hashmap.git

$ sudo  npm install -g ./hashmap

hashmap@2.3.0 /usr/lib/node_modules/hashmap

How to remove hashmap package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall hashmap

Basic Information of hashmap NPM Package: