Node.js worker threads shared object/store

ECMA Script contains no shared objects but it have SharedArrayBuffer. And you can implement such behavior on your own writing data directly in buffer using DataView and wrapper:

// Shared valueclass SharedPoint {  constructor(array) {    this.dataview = new DataView(array);  }  set x(value) {    this.dataview.setUint8(0, value);  }  set y(value) {    this.dataview.setUint8(1, value);  }  get x() {    return this.dataview.getUint8(0);  }  get y() {    return this.dataview.getUint8(1);  }}// Usageconst buffer = new SharedArrayBuffer(2);// Create two instances of shared point.const point0 = new SharedPoint(buffer);const point1 = new SharedPoint(buffer);// Get initial values for point #1console.log('x', point1.x); // 0console.log('y', point1.y); // 0// Update point #0point0.x = 64;point0.y = 32;// Get changes in point #1console.log('x', point1.x); // 64console.log('y', point1.y); // 32

You are able to create class which can manipulate strings or C-like structures. While SharedArrayBuffer is tranferable object it can be shared between worker and main process.

⚠️ Note Due to Spectre attack SharedArrayBuffer was disabled by all major browsers and reenabled in Chrome since version 68 and in Firefox since version 79. Check browsers support on can i use.