The Tor Browser / file revision

 // Globals passed to onNewGlobalObject handers are ready for use immediately.

 var dbg = new Debugger;

 var log = '';

 dbg.onNewGlobalObject = function (global) {

   log += 'n';

   var gw = dbg.addDebuggee(global);

   gw.defineProperty('x', { value: -1 });

   // Check that the global's magic lazy properties are working.

   assertEq(gw.evalInGlobalWithBindings('Math.atan2(y,x)', { y: 0 }).return, Math.PI);

   // Check that the global's prototype is hooked up.

   assertEq(gw.evalInGlobalWithBindings('x.toString()', { x: gw }).return, "[object global]");

 };

 newGlobal();

 assertEq(log, 'n');