emberjs/ember.js — pull request #1551 by snickell (2012-11-19 20:29:37+00:00)
Title: Remove meta objects from JSON output on IE7/8.

Define a non-op Meta.toJSON() function on Meta objects to supress them from JSON output on IE7/8. This fixes a circular reference error that prevented EmberJS Objects from being output as JSON on these browsers.