The following user agents have been tested and are supported in this release. If a user agent version is not listed as supported, it still may work, especially on browsers with rapid release cycles (Chrome, Firefox). Future minor releases of Dojo might include fixes to support future releases of these browsers, but it is not guaranteed.
Server-Side User Agents
asyncEventListener helps using asynchronous event listeners by ensuring the received event will not be invalid when accessed from an asynchronous function. In old browsers (such as IE 8 and bellow) the event object can be invalid when reached from an asynchronous function (like a debounce). dojo/on/asyncEventListener
Added support for uglify-js 2.x builder. To use uglify-js 2.x, just upgrade from 1.x. If optimizeOptions is used, some of the options may need to be changed to match uglify-js 2.x naming, see Uglilfy 2 documentation on the new options available.
In addition, multiple processes will be used while running uglify builder. In previous versions, only one CPU core is being used.