/api/category, /api/directory, /api/file 아래의 대부분의 Endpoint들을 tRPC로 마이그레이션

src/trpc/init.server.ts

@@ -1,10 +1,12 @@
 import type { RequestEvent } from "@sveltejs/kit";
 import { initTRPC, TRPCError } from "@trpc/server";
+import superjson from "superjson";
 import { authorizeMiddleware, authorizeClientMiddleware } from "./middlewares/authorize";
 
-export const createContext = (event: RequestEvent) => event;
+export type Context = Awaited<ReturnType<typeof createContext>>;
 
-export const t = initTRPC.context<Awaited<ReturnType<typeof createContext>>>().create();
+export const createContext = (event: RequestEvent) => event;
+export const t = initTRPC.context<Context>().create({ transformer: superjson });
 
 export const router = t.router;
 export const publicProcedure = t.procedure;