How to parse Javascript Object Notation in Extendscript?

I noticed in Dr. Brown's Image Processor the following code:

dialogResource =  "dialog { text: 'Image Processor', bounds:[100, 100, 480, 540], "

which is basically assigning object notation to the dialogResource variable.  Then later in the script you see:

mainDialog = new Window( this.dialogResource );

Which means Window() takes the object notation and creates a window object using it.  This also means the object notation is being parsed.

There's another post that allows you to use the Socket() to pull data right off a website (like a web service), so I am really interested in downloading JSON and turning it into local objects.

Any ideas on how to turn JSON into valid objects in ExtendScript?