cal.pub0.org/packages/trpc/server/trpc.ts

56 lines
1.7 KiB
TypeScript

import superjson from "superjson";
import { initTRPC } from "@trpc/server";
import type { createContextInner } from "./createContext";
import type { UserFromSession } from "./middlewares/sessionMiddleware";
export const tRPCContext = initTRPC.context<typeof createContextInner>().create({
transformer: superjson,
});
export const router = tRPCContext.router;
export const mergeRouters = tRPCContext.mergeRouters;
export const middleware = tRPCContext.middleware;
export const procedure = tRPCContext.procedure;
export type TrpcSessionUser = UserFromSession;
// eslint-disable-next-line @typescript-eslint/ban-types
const UNSTABLE_HANDLER_CACHE: Record<string, Function> = {};
/**
* This function will import the module defined in importer just once and then cache the default export of that module.
*
* It gives you the default export of the module.
*
* **Note: It is your job to ensure that the name provided is unique across all routes.**
* @example
* ```ts
const handler = await importHandler("myUniqueNameSpace", () => import("./getUser.handler"));
return handler({ ctx, input });
* ```
*/
export const importHandler = async <
T extends {
// eslint-disable-next-line @typescript-eslint/ban-types
default: Function;
}
>(
/**
* The name of the handler in cache. It has to be unique across all routes
*/
name: string,
importer: () => Promise<T>
) => {
const nameInCache = name as keyof typeof UNSTABLE_HANDLER_CACHE;
if (!UNSTABLE_HANDLER_CACHE[nameInCache]) {
const importedModule = await importer();
UNSTABLE_HANDLER_CACHE[nameInCache] = importedModule.default;
return importedModule.default as T["default"];
}
return UNSTABLE_HANDLER_CACHE[nameInCache] as unknown as T["default"];
};