The Tor Browser / file revision

 // Nested compilation units (say, an eval with in an eval) should have the

 // correct sources attributed to them.

 let g = newGlobal();

 let dbg = new Debugger(g);

 var count = 0;

 dbg.onNewScript = function (script) {

     ++count;

     if (count % 2 == 0)

         assertEq(script.source.text, text);

 }

 g.eval("eval('" + (text = "") + "')");

 g.eval("eval('" + (text = "2 * 3") + "')");

 g.eval("new Function('" + (text = "") + "')");

 g.eval("new Function('" + (text = "2 * 3") + "')");

 evaluate("", { global: g });

 evaluate("2 * 3", { global: g });

 assertEq(count, 10);