https://zwh.zone/javascript--e6-8a-bd-e8-b1-a1-e8-aa-9e-e6-b3-95-e6-a8-b9-abstract-syntax-tree--ef-bc-9a-e6-89-93-e5-8c-85-e5-b7-a5-e5-85-b7--e8-88-87--e4-bb-a3-e7-a2-/