Node.js Worker Threads: how to to Share ArrayBuffer Between Threads
I'm converting an old project and I'm stuck on something that should probably be simple... I'm stuck on something that should probably be simple. I'm trying to use Node.js worker threads to process a large dataset in parallel, but I'm running into issues when attempting to share an `ArrayBuffer` between the main thread and a worker. Specifically, I'm using Node.js v18.12.1 and I've written the following code to create a worker and pass an `ArrayBuffer`: ```javascript const { Worker, isMainThread, parentPort, workerData } = require('worker_threads'); if (isMainThread) { const buffer = new ArrayBuffer(1024); // create a buffer const worker = new Worker(__filename, { workerData: buffer }); worker.on('message', message => console.log('Received:', message)); } else { // Attempting to access the shared ArrayBuffer const receivedBuffer = new Uint8Array(workerData); // Processing data... for (let i = 0; i < receivedBuffer.length; i++) { receivedBuffer[i] = i * 2; // Sample processing } parentPort.postMessage('Processing complete'); } ``` However, when I run this code, I receive an behavior: `behavior: Received an unexpected message from the worker: [object ArrayBuffer]`. It seems like the buffer is not being interpreted correctly in the worker thread. I've tried some variations, such as using `SharedArrayBuffer` and modifying the buffer type, but I still need to get it to work. Is there a specific way to properly share an `ArrayBuffer` between the main thread and worker threads in Node.js? What am I missing here? Any insights or corrections to my approach would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Thanks in advance! I'm working in a macOS environment. Thanks in advance! The project is a mobile app built with Javascript. Thanks, I really appreciate it!