To deal with dota client-sided API having different names for the same class. With this in the transpiler you could define aliases in the declarations, e.g.

type C_DOTA_BaseNPC = CDOTA_BaseNPC;

Then an explicit cast would cause the transpiler to use the alias instead of the original class. For example

unit.GetMana()                      ==>   CDOTA_BaseNPC.GetMana(unit)
(<C_DOTA_BaseNpc>unit).GetMana()    ==>   C_DOTA_BaseNPC.GetMana(unit)

Ideally this would automatically be done based on the value of IsServer(), but I currently see no way to do this in declarations while keeping the transpiler as generic as possible.