Not working with trpc version 10 about astro-trpc

[Ehesp]

I don't think this package is needed with v10 right? I got it working like so:

// pages/api/trpc/[trpc].ts

import { APIRoute } from 'astro';
import { fetchRequestHandler } from '@trpc/server/adapters/fetch';
import { initTRPC } from '@trpc/server';

const t = initTRPC.create();
 
const router = t.router({
  // ... routes
});

export const all: APIRoute = ({ request }) => {
  return fetchRequestHandler({
    req: request,
    endpoint: '/api/trpc',
    router,
  });
};

export type AppRouter = typeof router;

// client file

export const trpc = createTRPCProxyClient<AppRouter>({
  links: [
    httpBatchLink({
      url: 'http://localhost:3000/api/trpc',
    }),
  ],
});

[carlos8v]

I manage to fix a SSR error where the client request did not made to the createTRPCProxyClient in the astro frontmatter by intercepting query/mutation context and sending to the httpBatchLink.

// src/lib/client.ts
import type { AnyRouter } from '@trpc/server'

import { createTRPCProxyClient, httpBatchLink, TRPCLink } from '@trpc/client'
import type { AppRouter } from '../pages/api/trpc/[trpc]'

function astroSSRLink<TRouter extends AnyRouter>(): TRPCLink<TRouter> {
  return (runtime) => {
    return (props) => {
      const incomingReq = props.op.context?.incomingReq as Request

      return httpBatchLink({
        url: 'http://localhost:3000/api/trpc',
        fetch: (url, options) => fetch(url, {
          ...options,
          headers: incomingReq?.headers ? incomingReq.headers : options?.headers,
          credentials: 'same-origin'
        })
      })(runtime)(props)
    }
  }
}

export const trpc = createTRPCProxyClient<AppRouter>({
  links: [astroSSRLink()]
})

That way you can use trpc context to get client headers and cookies like that:

---
// src/pages/index.astro
import { trpc } from '@lib/client';

const user = await trpc.me.query(undefined, {
  context: { incomingReq: Astro.request } // <-- Redirect client request to trpc context
})
---

<UserComponent user={user} />

// src/pages/api/trpc/[trpc].ts
import type { APIContext } from 'astro'
import { initTRPC } from '@trpc/server'

const t = initTRPC.create()

const appRouter = t.router({
  me: t.procedure.query(async ({ ctx }) => {
    const { cookies } = ctx as APIContext
    if (!cookies.has('sessionId')) return null
    // ....
  })
})

export const all: APIRoute = (apiContext) => {
  return fetchRequestHandler({
    req: apiContext.request,
    endpoint: '/api/trpc',
    router: appRouter,
    createContext: () => apiContext
  })
}

[MoustaphaDev]

@Ehesp and @carlos8v Thank you so much for your feedback. I'll try your suggestions and see if it's time to deprecate this package since tRPC is that easy to setup now with the fetch adapter and performance is increased.

[MoustaphaDev]

Hi @unbiased-dev, thanks for reporting this. I'll update when I have some free time.

[Ehesp]

Oh nice that's a neat way. I've currently made a caller via createCaller api which accepts a Request, and uses that to create my context object.

[MoustaphaDev]

It's been a while, didn't have enough time to consider this but that's it!
Thanks again!