# Web Messaging

> The MessageChannel, MessagePort, and MessageEvent globals.

`MessageChannel`, `MessagePort`, and `MessageEvent` are globals and follow the
[HTML Standard](https://html.spec.whatwg.org/multipage/web-messaging.html).

## Differences from browsers

- A channel connects ports in the same realm; it does not create a worker.
- Structured clone copies primitives, arrays, plain objects, cycles, `Date`, `RegExp`, `Map`, `Set`, and `ArrayBuffer`.
- Posting a function throws `DataCloneError`.

For workers, see [node:worker_threads](https://elide.help/docs/api-node-worker-threads).