generates a web worker from a function

generateWorker.js

  (function(){
  function aWorker(){
  onmessage = function(e) {
    console.log('Message received from main script');
    var workerResult = 'Result: ' + (e.data[0] * e.data[1]);
    console.log('Posting message back to main script');
    postMessage(workerResult);
  }
  var i = 0;

  function timedCount() {
      i = i + 1;
      postMessage(i);
      setTimeout(timedCount,500);
  }

  timedCount();

  }



    function fn2workerURL(fn) {
      var blob = new Blob(['('+fn.toString()+')()'], {type: 'application/javascript'})
      return URL.createObjectURL(blob)
    }
    
    var worker = new Worker(fn2workerURL(aWorker));

    worker.postMessage('hello')

    worker.onmessage = function(oEvent) {
      console.log('Received: ' + oEvent.data);
    };
    worker.onerror = function(err) {
      console.error(err);
    };

  })()