BUG: RPC types broken when using arrow function with a Promise #4765
Description
What version of Hono are you using?
4.12.2
Reproduction
import { Hono } from "hono";
import { hc } from "hono/client";
const app = new Hono().get("/", (c) =>
Promise.resolve({ hello: "world" }).then((d) => c.json(d)),
);
const api = hc<typeof app>("");
// data has unknown type
const data = await api.index.$get().then((r) => r.json());But the same code without arrow funcion works:
import { Hono } from "hono";
import { hc } from "hono/client";
const app = new Hono().get("/", (c) => {
const resp = Promise.resolve({ hello: "world" }).then((d) => c.json(d));
return resp;
});
const api = hc<typeof app>("");
// data has { hello: string; } type
const data = await api.index.$get().then((r) => r.json());What is the expected behavior?
Types should be inferred in both cases
What do you see instead?
RPC json response has unknown type