snapshot of https://github.com/ueberdosis/hocuspocus.git @ cf3cfa355b4d3bb61c6b6c80071f71783e32470e (2026-09-15)

playground/backend/src/bun.ts

@@ -0,0 +1,59 @@
+import { Logger } from "@hocuspocus/extension-logger";
+import { Hocuspocus } from "@hocuspocus/server";
+import crossws from "crossws/adapters/bun";
+
+const hocuspocus = new Hocuspocus({
+	extensions: [new Logger()],
+});
+
+const ws = crossws({
+	hooks: {
+		open(peer) {
+			// Use peer methods instead of peer.websocket to avoid
+			// Bun's Proxy `this` binding issue with ServerWebSocket
+			const wsLike = {
+				get readyState() {
+					return peer.websocket.readyState ?? 3; // 3 = CLOSED
+				},
+				send(data: any) {
+					peer.send(data);
+				},
+				close(code?: number, reason?: string) {
+					peer.close(code, reason);
+				},
+			};
+			const clientConnection = hocuspocus.handleConnection(
+				wsLike,
+				peer.request as Request,
+			);
+			(peer as any)._hocuspocus = clientConnection;
+		},
+		message(peer, message) {
+			(peer as any)._hocuspocus?.handleMessage(message.uint8Array());
+		},
+		close(peer, event) {
+			(peer as any)._hocuspocus?.handleClose({
+				code: event.code,
+				reason: event.reason,
+			});
+		},
+		error(peer, error) {
+			console.error("WebSocket error for peer:", peer.id);
+			console.error(error);
+		},
+	},
+});
+
+Bun.serve({
+	port: 8000,
+	websocket: ws.websocket,
+	fetch(request, server) {
+		if (request.headers.get("upgrade") === "websocket") {
+			return ws.handleUpgrade(request, server);
+		}
+
+		return new Response("Welcome to Hocuspocus!");
+	},
+});
+
+console.log("Listening on ws://127.0.0.1:8000");