Replaces "istype"s with is_helpers macros (#28676)

code/modules/admin/secrets.dm

@@ -335,7 +335,7 @@
 				return
 			SSblackbox.add_details("admin_secrets_fun_used","Traitor All ([objective])")
 			for(var/mob/living/H in GLOB.player_list)
-				if(!(istype(H, /mob/living/carbon/human)||istype(H, /mob/living/silicon/))) continue
+				if(!(ishuman(H)||istype(H, /mob/living/silicon/))) continue
 				if(H.stat == 2 || !H.client || !H.mind || ispAI(H)) continue
 				if(is_special_character(H)) continue
 				H.mind.add_antag_datum(ANTAG_DATUM_TRAITOR_CUSTOM)

code/modules/admin/topic.dm

@@ -1927,10 +1927,10 @@
 							O.setDir(obj_dir)
 							if(obj_name)
 								O.name = obj_name
-								if(istype(O,/mob))
+								if(ismob(O))
 									var/mob/M = O
 									M.real_name = obj_name
-							if(where == "inhand" && isliving(usr) && istype(O, /obj/item))
+							if(where == "inhand" && isliving(usr) && isitem(O))
 								var/mob/living/L = usr
 								var/obj/item/I = O
 								L.put_in_hands(I)

code/modules/admin/verbs/modifyvariables.dm

@@ -44,7 +44,7 @@ GLOBAL_PROTECT(VVpixelmovement)
 		else
 			. = VV_TYPE
 
-	else if (istype(var_value,/list))
+	else if (islist(var_value))
 		. = VV_LIST
 
 	else if (isfile(var_value))
@@ -528,7 +528,7 @@ GLOBAL_PROTECT(VVpixelmovement)
 		variable = input("Which var?","Var") as null|anything in names
 		if(!variable)
 			return
-	
+
 	if(!O.can_vv_get(variable))
 		return
 
@@ -594,7 +594,7 @@ GLOBAL_PROTECT(VVpixelmovement)
 
 	switch(class)
 		if(VV_LIST)
-			if(!istype(var_value,/list))
+			if(!islist(var_value))
 				mod_list(list(), O, original_name, variable)
 
 			mod_list(var_value, O, original_name, variable)