customTask_for_facebook_pixel_streaming

function () {
  return function(tracker) {
    tracker.set('dimension1', tracker.get('clientId'));
    var originalSendHitTask = tracker.get('sendHitTask');
    tracker.set('sendHitTask', function(model) {
      originalSendHitTask(model);
      var hitPayload = model.get('hitPayload');
      var cleanupKeys = ['_v', 'a', '_s', '_u', 'je', '_u', 'jid', 'gjid', '_gid', 'gtm', 'z', 'v', 'tid', '_r'];
      var fbHitPayload = {};
      decodeURI(hitPayload).split('&').forEach(function(pair) {
        var keyValue = pair.split('=');
        if (cleanupKeys.indexOf(keyValue[0]) === -1) {
          fbHitPayload[keyValue[0]] = decodeURIComponent(keyValue[1]);
        }
      });
      var fbEventName = fbHitPayload['t'];
      delete fbHitPayload['t'];
      if (fbEventName == 'pageview') {
        fbq('trackSingle', {{FB Pixel ID}}, 'PageView', fbHitPayload);
      } else {
        fbq('trackSingleCustom', {{FB Pixel ID}}, 'GA_'+ fbEventName, fbHitPayload);
      }
    });
  }
}