[03:41:08.755] var noauto = [ 0, 1 ]; noauto[ 6 ] = 66; noauto ; [03:41:08.764] [0, 1, , , , , 66] [03:43:06.834] noauto[2].failToAutoVivify = 12; noauto; [03:43:06.843] TypeError: noauto[2] is undefined