AsAbove is a Sublime Text 2 package which will duplicate the characters above your cursor or selection.
If you have the Package Control package installed, you can install JSDocs from inside Sublime Text itself. Open the Command Palette and select "Package Control: Install Package", then search for AsAbove and you're done!
Go to your Sublime Text 2 Packages directory and clone the repository using the command below:
git clone https://github.com/spadgos/sublime-AsAbove.git AsAbove
Don't forget to keep updating it, though!
The default hotkey to activate AsAbove is Ctrl+Shift+', however this can be configured in your local Default (...).sublime-keymap file. The command is called as_above.
Given the text below, and the cursor sitting at the position of the pipe (|):
var Text = require('path/to/libraries/Text'),
User|
By activating AsAbove (Ctrl+Shift+') multiple times, you can duplicate the necessary parts of the line above easily.
var Text = require('path/to/libraries/Text'),
User = require('path/to/libraries/|
AsAbove works with selections, multiple cursors and multiple selections. With multiple selections/cursors, they are visited in a bottom-up order so that if there are selections on consecutive lines, the topmost line isn't copied down.
// before
foo
bar
qux
dah
// after making 3 selections on "bar", "qux" & "dah" and activating AsAbove
foo
foo
bar
qux