Problems using headers in Elysia with Cloudflare Workers

[Nathan13888]

What version of Elysia is running?

1.1.23

What platform is your computer?

Linux 6.10.7-xanmod1 x86_64 unknown

What steps can reproduce the bug?

1. Define export default const app = new Elysia({ aot: false });
2. Define export function for Cloudflare Workers:

import { type Context } from "elysia";
import app from "./server";

export default {
	async fetch(request: Request, _env: Env, _ctx: Context): Promise<Response> {
		return await app.handle(request);
	},
};

3. Run using workerd locally: wrangler dev index.ts (same results when using external endpoint after wrangler deploy index.ts)
4. Hit an endpoint on localhost:8787, then access headers in context.

Notes:

• I have tried other versions of Elysia (eg. 1.1.15)
• Tried new Elysia.use(app, { aot: false }).handle(request)
• Tried new Elysia.mount(app, { aot: false }).handle(request)
• Tried new Elysia.use(app, { aot: false }).fetch(request)
• Tried new Elysia.mount(app, { aot: false }).fetch(request)

What is the expected behavior?

ctx.headers should show the same headers as request.headers (in index.ts)

Headers(8) {
  'accept' => '*/*',
  'accept-encoding' => 'br, gzip',
  'content-length' => '2',
  'content-type' => 'application/json',       │
  'host' => 'localhost:8787',
  'user-agent' => 'insomnia/9.0.0',
  'x-signature-ed25519' => '9f19f67c8e316139774a7a7a823c86611ad182b5677f33384a7ccd788ed97fe9463fc9c0c3268cdc30d4493b43f393b42285c52aaa046b0dac48d06800fd9303',
  'x-signature-timestamp' => '1729761548',
  [immutable]: true
}

What do you see instead?

ctx.headers is undefined. Validation for headers also errors out

Additional information

No response

Have you try removing the node_modules and bun.lockb and try again yet?

Uhhh oopsies nope.

[azezsan]

this setup worked for me with no issues

// src/index.ts
import { Elysia } from 'elysia'
import { app } from './routes/app'

export default {
  async fetch(request: Request, env: CloudflareBindings) {
    return await new Elysia({ aot: false })
      .decorate("env", env)
      .use(app)
      .handle(request)
  },
}

// src/routes/app.ts
import Elysia from "elysia";

export const app = new Elysia()
    .decorate("env", null as unknown as CloudflareBindings)
    .get("/", () => {
        return {
            hello: 'Elysia'
        }
    })