1.3.0 types no longer support `headers.get()` method, even though it works

[EvHaus]

What version of Elysia is running?

1.3.0

What platform is your computer?

Darwin 24.4.0 arm64 arm

What steps can reproduce the bug?

After upgrading to elysia@1.3.0, the following Eden code:

import { treaty } from '@elysiajs/eden';
import { Elysia } from 'elysia';

// Start Elysia app
const app = new Elysia().get('/session', () => true)

// Enable Eden
const api = treaty(app);

// Call end point and get its `headers` object
const {headers} = await api.session.get();

// Inspect the `headers` object via `.get()`
console.log(headers.get('set-cookie'));

Fails TypeScript checks with:

error TS2339: Property 'get' does not exist on type 'HeadersInit'.
  Property 'get' does not exist on type '[string, string][]'.

The code itself actually still works fine. It's just the TypeScript type that seems to be failing.

What is the expected behavior?

No response

What do you see instead?

No response

Additional information

No response

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

No response