server.ts

import { opine } from "https://deno.land/x/opine@2.3.3/mod.ts";
import * as trpc from "https://esm.sh/@trpc/server@9.27.2";
import * as trpcExpress from "https://esm.sh/@trpc/server@9.27.2/adapters/express";
//import { opineCors } from "https://deno.land/x/cors@v1.2.2/mod.ts";

const app = opine(); // opine is express ported to deno
const port = 5005;

// setup tRPC router
const appRouter = trpc.router().query("hw", {
  resolve() {
    const data = { hello: "world" };
    return data;
  },
});

// apply tRPC router as a middleware
app.use(
  "/trpc",
  trpcExpress.createExpressMiddleware({
    router: appRouter,
    createContext: () => null,
  }),
);

//app.use(opineCors()); // uncomment to use cors

app.listen(port); // start server

console.log(`Opine started on port: ${port}`);

export type AppRouter = typeof appRouter; // tRPC type-only export