Hono•2mo ago

RPC type error - Unable to interop

Repro repo: https://codeberg.org/Dreamboat9222/ioMonorepo-Edgedb-Hono-Svelte In a monorepo, I have hono api in one package, and the ui (Svelte) in another and use EdgeDB as the database. It was working a couple of days ago, but I lost all intellisense abilities for 4 days so I was basically coding inside notepad 😂 (The issue is now fixed), but since then this stopped working. I also posted on the edgedb server, but I didn't receive any reply yet. Posting here in case someone have an idea on what is going wrong. Inside hono if I remove the database from context the error disappear:

app.use(async (c, next) => {
  c.set('dbClient', createClient());
  c.set('e', e);
  await next();
});

app.use(async (c, next) => {
  c.set('dbClient', createClient());
  c.set('e', e);
  await next();
});

In svelte I import this to make API queries:

import { type AppRouter } from "@repo/api-hono"
import { hc } from 'hono/client'

export const hono = hc<AppRouter>(API_ENDPOINT, {
    init: {
        credentials: 'include'
    }
});

import { type AppRouter } from "@repo/api-hono"
import { hc } from 'hono/client'

export const hono = hc<AppRouter>(API_ENDPOINT, {
    init: {
        credentials: 'include'
    }
});

But for some reason, when I try to load the UI, it throws Unable to interop export * from "edgedb/dist/reflection/index.js"

 in ...Monorepo/dbschema/edgeql-js/reflection.mts, this may lose module exports. Please export "edgedb/dist/reflection/index.js" as ESM or use named exports instead, e.g.

export { A, B } from "edgedb/dist/reflection/index.js"




Removing

import { type AppRouter } from "@repo/api-hono"

 and the type next to hc removes the error, but then I lose all types for my API calls.

Edgedb types are generated with

bunx @edgedb/generate edgeql-js --target esm

 (I tried mts too, same error)

Inside the browser, the following error appear:

TypeError: $.StrictMap is not a constructor` - I removed all node_modules folders and reinstalled the deps - I removed dbschema/edgeql-js and regenerated the types - I double-checked tsconfig files but didn't spot anything, but I'm no specialist. Any idea please ? 😰

Codeberg.org

ioMonorepo-Edgedb-Hono-Svelte

Reproduction repo

2 Replies

JustUseFirefoxOP•2mo ago

EdgeDB dev confirmed that, for some reason now, hono exports server-only code related to the database and that code gets imported client-side with RPC. Yup, Hono's side of things. I've updated the repo with a simpler version that doesnt rely on @repo/edgedb and multiple imports but the error persist no matter what. Everything points to Hono, as soon as import { type AppRouter } from "@repo/api-hono" is present in Svelte ui, the error appears. But this is kind of required to make use of RPC 😂 Someone over at edgedb suggested removing the context and calling the database directly inside a route, but the issue persist. I think it's either how edge e returns type, or how hono infer types for RPC

const routes = app
.post(
  '/',
  async (c) => {

    // Calling this here: fine
    const dbClient = createClient();
    // Calling this here: error !
    const res = await e.select(e.Post).run(dbClient);

   


    const json = await c.req.parseBody();

    return c.json({
      type: 'authn',
      status: 'valid',
    });
  }
)

const routes = app
.post(
  '/',
  async (c) => {

    // Calling this here: fine
    const dbClient = createClient();
    // Calling this here: error !
    const res = await e.select(e.Post).run(dbClient);

   


    const json = await c.req.parseBody();

    return c.json({
      type: 'authn',
      status: 'valid',
    });
  }
)

Git link updated

JustUseFirefoxOP•2mo ago

https://github.com/honojs/hono/issues/3450

GitHub

RPC tries to import server-side database code into the client and m...

What version of Hono are you using? 4.6.3 What runtime/platform is your app running on? Bun 1.1.29 What steps can reproduce the bug? Use EdgeDB Use Hono RPC and export routes types What is the expe...

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RPC type error - Unable to interop