Node 10.5 concurrency test

const { Worker, isMainThread,  workerData } = require('worker_threads');

let currentVal = 0
let intervals = [10,10, 10]
var shared = 0

function counter(id, i){
  shared = i
  console.log("[", id, "]", "Shared: " + shared)
  return i;
}


if(isMainThread) {
	console.log("this is the main thread")
	for(let i = 0; i < 2; i++) {
		let w = new Worker(__filename, {workerData: i});
	}

	setInterval((a) => currentVal = counter(a,currentVal + 1), intervals[2], "MainThread");
} else {

	console.log("this isn't")

	setInterval((a) => currentVal = counter(a,currentVal + 1), intervals[workerData], workerData);
}