// Frame.prototype.callee for a normal function frame. load(libdir + "asserts.js"); var g = newGlobal({ newCompartment: true }); var dbg = new Debugger(g); g.eval(` function f() {} `); const fObj = dbg.makeGlobalObjectReference(g).makeDebuggeeValue(g.f); let frame; let callee; dbg.onEnterFrame = function(f) { frame = f; callee = frame.callee; }; g.f(); assertEq(frame instanceof Debugger.Frame, true); assertEq(callee instanceof Debugger.Object, true); assertEq(callee, fObj); // The frame has finished evaluating, so the callee is no longer accessible. assertThrowsInstanceOf(() => frame.callee, Error);