Add isEmpty function to Module:Opponent

components/opponent/commons/opponent.lua

@@ -169,6 +169,19 @@ function Opponent.isTbd(opponent)
 	end
 end
 
+---Checks if an opponent is empty
+---@param opponent standardOpponent?
+---@return boolean
+function Opponent.isEmpty(opponent)
+	-- if no type is set consider opponent as empty
+	return not opponent or not opponent.type
+		-- if neither name not template not players are set consider the opponent as empty
+		or (String.isEmpty(opponent.name) and String.isEmpty(opponent.template) and Table.isEmpty(opponent.players))
+		-- if opponent equals blank consider it empty
+		-- need to exclude TBD Opponents since Opponet.blank sets a TBD Opponent for type `team`
+		or (not Opponent.isTbd(opponent) and Table.deepEquals(opponent, Opponent.blank(opponent.type)))
+end
+
 ---Checks whether an opponent is a BYE Opponent
 ---@param opponent standardOpponent
 ---@return boolean