Technical term for tabbed formatting of variable definitions and assignments

Excuse me for such a mundane question but it's been racking my brains for a while now.

I'm trying to find the technical term for formatting code neatly in a tabbed form what I mean by this is the following

var express     = require('express');       // comm 1
var app         = express();                // comm 2
var bodyParser  = require('body-parser');   // comm 3
var morgan      = require('morgan');        // comm 4
var mongoose    = require('mongoose');      // comm 5
var port        = process.env.PORT || 8080; // comm 6

Basically I'm trying to find a plugin that will quickly allow me to format my code in such a way, but because I am unaware of the technical term it is proving very difficult to know if such a plugin exists or not.