michael@0: // getVariable works on ancestors of frame.environment.
michael@0: 
michael@0: var g = newGlobal();
michael@0: var dbg = Debugger(g);
michael@0: var log = '';
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     for (var env = frame.environment; env; env = env.parent) {
michael@0:         if (env.find("x") === env)
michael@0:             log += env.getVariable("x");
michael@0:     }
michael@0: };
michael@0: g.eval("var x = 1; { let x = 2; with (Object.create({x: 3})) { debugger; } }");
michael@0: assertEq(log, "321");