$ sudo npm install sequelize
$ sudo npm install -g sequelize

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

$ sudo npm update sequelize

Update package globally,

$ npm install -g sequelize

Git clone:

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

$ sudo  npm install -g ./sequelize

sequelize@4.23.0 /usr/lib/node_modules/sequelize

How to remove sequelize package :

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

$ sudo npm uninstall sequelize

Basic Information of sequelize NPM Package: