/packages/vite-plugin-cloudflare/playground/partyserver/worker/index.ts

import { routePartykitRequest, Server } from "partyserver";
import type { Connection } from "partyserver";

interface Env extends Record<string, unknown> {
	Assets: Fetcher;
	MyServer: DurableObjectNamespace<MyServer>;
}

export class MyServer extends Server<Env> {
	override onMessage(connection: Connection<unknown>, message: string) {
		connection.send(`Message from the server: received '${message}'`);
	}
}

export default {
	async fetch(request, env) {
		const response = await routePartykitRequest(request, env);

		return response ?? env.Assets.fetch(request);
	},
} satisfies ExportedHandler<Env>;