@enkaku/message-transport/lib/index.js

MessagePort transport for Enkaku RPC clients and servers

/**
 * MessagePort transport for Enkaku RPC clients and servers.
 *
 * ## Installation
 *
 * ```sh
 * npm install @enkaku/message-transport
 * ```
 *
 * @module message-transport
 */ import { Transport } from '@enkaku/transport';
export async function createTransportStream(source) {
    const port = await Promise.resolve(typeof source === 'function' ? source() : source);
    const readable = new ReadableStream({
        start (controller) {
            port.onmessage = (msg)=>{
                controller.enqueue(msg.data);
            };
            port.start();
        }
    });
    const writable = new WritableStream({
        write (msg) {
            port.postMessage(msg);
        }
    });
    return {
        readable,
        writable
    };
}
export class MessageTransport extends Transport {
    constructor(params){
        super({
            stream: ()=>createTransportStream(params.port),
            signal: params.signal
        });
    }
}