npm because it's now the de facto package manager for javascript. And why a package manager? For many reasons, the most useful ones are : - ease of install -

npm because it's now the de facto package manager for javascript. And why a package manager? For many reasons, the most useful ones are : - ease of install - you can declare dependencies for your plugin instead of having the end user go to X differents pages to download everything needed - the most important one : you don't have to check all your packages for important updates like security ones