src/events/interactions/interactionCreate.ts

@@ -35,9 +35,13 @@ export default (interaction: Interaction, client: Client) => {
         return console.error(loc.get("e_interacreate_no_command"));
       }
 
+      if (command.autocomplete) {
         return command.autocomplete(interaction);
       }
 
+      return;
+    }
+
     default:
       break;
   }

src/modules/client.ts

@@ -79,6 +79,8 @@ declare module "discord.js" {
           data: SlashCommandBuilder;
           /** How the command interact */
           interaction: (interaction: CommandInteraction, client: Client) => unknown;
+          /** Autocomplete logic */
+          autocomplete: undefined | ((interaction: AutocompleteInteraction) => unknown);
         }
       >;
     };