$ sudo npm install polyline
$ sudo npm install -g polyline

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

$ sudo npm update polyline

Update package globally,

$ npm install -g polyline

Git clone:

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

$ sudo  npm install -g ./polyline

polyline@0.2.0 /usr/lib/node_modules/polyline

How to remove polyline package :

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

$ sudo npm uninstall polyline

Basic Information of polyline NPM Package: