The Tor Browser / file revision

 // |jit-test| debug

 // Frame.prototype.script for call frames.

 var g = newGlobal();

 var dbg = new Debugger(g);

 // Apply |f| to each frame that is |skip| frames up from each frame that

 // executes a 'debugger' statement when evaluating |code| in the global g.

 function ApplyToFrameScript(code, skip, f) {

     dbg.onDebuggerStatement = function (frame) {

         while (skip-- > 0)

             frame = frame.older;

         assertEq(frame.type, "call");

         f(frame.script);

     };

     g.eval(code);

 }

 ApplyToFrameScript('(function () { debugger; })();', 0,

                    function (script) {

                        assertEq(script instanceof Debugger.Script, true);

                    });

 // This would be nice, once we can get host call frames:

 // ApplyToFrameScript("(function () { debugger; }).call(null);", 1,

 //                    function (script) {

 //                        assertEq(script, null);

 //                   });