urbanairship/drive.js — pull request #33 by chrisdickinson (2014-03-28 22:20:48+00:00)
Title: Fix a problem with slowness by reducing speed

Somewhat less facetiously:

There was a problem with jsdom retaining references to old code & not being able to GC it completely. Eventually tests would run OOM/start hitting swap, which is bad! This prevents that by spawning a process for each suite; which itself slows down everything, but at a constant rate.