Fix duplication WS Twitch + types

src/index.ts

@@ -8,8 +8,8 @@ import 'dotenv/config'
 
 // CUSTOM TYPES
 interface CConnection extends Connection {
-	once: (event: string, listener: (...args: unknown[]) => void) => void
-	on: (event: string, listener: (...args: unknown[]) => void) => void
+	once: (event: string, listener: (...args: unknown[]) => void) => this
+	on: (event: string, listener: (...args: unknown[]) => void) => this
 }
 interface Command {
 	name: string