Module

x/evt/lib/index.ts>dom.MessagePort

šŸ’§EventEmitter's typesafe replacement
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interface dom.MessagePort
implements EventTarget
import { type dom } from "https://deno.land/x/evt@v2.3.1/lib/index.ts";
const { MessagePort } = dom;

This Channel Messaging API interface represents one of the two ports of a MessageChannel, allowing messages to be sent from one port and listening out for them arriving at the other.

Properties

onmessage: ((this: MessagePort, ev: MessageEvent) => any) | null
onmessageerror: ((this: MessagePort, ev: MessageEvent) => any) | null

Methods

close(): void

Disconnects the port, so that it is no longer active.

postMessage(message: any, transfer: Transferable[]): void

Posts a message through the channel. Objects listed in transfer are transferred, not just cloned, meaning that they are no longer usable on the sending side.

Throws a "DataCloneError" DOMException if transfer contains duplicate objects or port, or if message could not be cloned.

postMessage(message: any, options?: PostMessageOptions): void
start(): void

Begins dispatching messages received on the port.

addEventListener<K extends keyof MessagePortEventMap>(
type: K,
listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void
addEventListener(
type: string,
options?: boolean | AddEventListenerOptions,
): void
removeEventListener<K extends keyof MessagePortEventMap>(
type: K,
listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any,
options?: boolean | EventListenerOptions,
): void
removeEventListener(
type: string,
options?: boolean | EventListenerOptions,
): void