Bun, Deno and crossws

chanxHooks(chanx) from @chanx-js/server/crossws gives crossws hooks, which serve chanx on any runtime crossws supports: Bun, Deno, Node, Cloudflare and, through h3, Nitro and Nuxt.

npm install @chanx-js/server crossws

Bun

import bunAdapter from 'crossws/adapters/bun';
import { chanxHooks } from '@chanx-js/server/crossws';

const ws = bunAdapter({ hooks: chanxHooks(chanx) });

Bun.serve({
  port: 8000,
  websocket: ws.websocket,
  fetch: (request, server) => ws.handleUpgrade(request, server),
});

Deno

import denoAdapter from 'crossws/adapters/deno';
import { chanxHooks } from '@chanx-js/server/crossws';

const ws = denoAdapter({ hooks: chanxHooks(chanx) });

Deno.serve({ port: 8000 }, (request, info) =>
  ws.handleUpgrade(request, info),
);

h3

import { H3, defineWebSocketHandler } from 'h3';
import { serve } from 'crossws/server';
import { chanxHooks } from '@chanx-js/server/crossws';

const app = new H3();
app.get('/ws/**', defineWebSocketHandler(chanxHooks(chanx)));

// `websocket: {}` takes the hooks h3 attaches to its response.
serve({ fetch: app.fetch, port: 8000, websocket: {} });

In a Nitro or Nuxt app, export the hooks from a WebSocket route handler with defineWebSocketHandler(chanxHooks(chanx)).

• An upgrade for a path no consumer serves is refused with 404.
• The runtime handles pings.
• Serve the AsyncAPI docs with asyncapiHandler, a Fetch handler.
• crossws's uWebSockets adapter cannot run chanx: it drops the binary flag, so every frame looks binary.