gistfile1.js

var path = "";
var activeSubworkers = 0;
 
if ( typeof(options.workerpath) == 'string' || options.workerpath instanceof String ) {
  path = options.workerpath;
}
 
var worker = new Worker(path + "metaworker.js");
 
worker.onmessage = function(event) {
  var callbackData = event.data;
  if ( callbackData.type=='data' ) {
    options.callback(callbackData.payload);
  } else if ( ({'log':true,'debug':true,'dir':true}).hasOwnProperty(callbackData.type) ) {
    console[callbackData.type].apply(this,callbackData.payload);
  }
}