feat: adding refactoring for repetitive event plugin processing

src/types/handler.ts

@@ -23,10 +23,15 @@ export type SlashOptions = Omit<CommandInteractionOptionResolver, 'getMessage' |
 export type Override<T1, T2> = Omit<T1, keyof T2> & T2;
 
 export type DefinitelyDefined<T, K> = T & Override<T, K>;
-export type Expand<T> = T extends object ? { [K in keyof T]: Expand<T[K]> } : T;
 
 type Reconstruct<T> = T extends Omit<infer O, infer _> ? O & Reconstruct<O> : T;
 
 type IsOptional<T> = {
     [K in keyof T]-?: T[K] extends Required<T>[K] ? false : true;
 };
+
+export type UnionToIntersection<T> = (T extends unknown ? (x: T) => unknown : never) extends (
+    x: infer R,
+) => unknown
+    ? R
+    : never;