@wexond/rpc-node

Type-safe communication between message ports from Node.js worker_threads module.

Installation

$ npm install --save @wexond/rpc-node @wexond/rpc-core

Quick start

Here's an example of communication from the main thread to a worker_thread:

• Create a file that is imported in both the worker_thread and the main thread, for example ping-pong.ts:

import { WorkerChannel } from '@wexond/rpc-node';

export interface PingPongService {
  ping(): string;
}

export const pingPongChannel = new WorkerChannel<PingPongService>('ping-pong');

• Code for your worker_thread:

import { RpcWorkerHandler } from '@wexond/rpc-node';
import { PingPongService, pingPongChannel } from './ping-pong';

class PingPongHandler implements RpcWorkerHandler<PingPongService> {
  // Equivalent of |parentPort.on('message')|
  ping(): string {
    return 'pong';
  }
}

// |parentPort| is the default value for the |messagePort| parameter in |getReceiver|.
pingPongChannel.getReceiver().handler = new PingPongHandler();

• Code for the main thread:

import { resolve } from 'path';
import { Worker } from 'worker_threads';

import { pingPongChannel } from './ping-pong';

const worker = new Worker('path/to/worker.js');
const pingPongService = pingPongChannel.getInvoker(worker);

(async () => {
  console.log(await pingPongService.ping()); // Prints `pong`.
})();

More examples

• Main to Worker

Documentation

WIP