// - Do not throw from handle methods. Set errno.
//
// - MakeCallback may only be made directly off the event loop.
-// That is there can be no JavaScript stack frames underneith it.
-// (Is there anyway to assert that?)
+// That is there can be no JavaScript stack frames underneath it.
+// (Is there any way to assert that?)
//
// - No use of v8::WeakReferenceCallback. The close callback signifies that
// we're done with a handle - external resources can be freed.