gistfile1.txt

var doc = context.document;

for (var i = 0; i < doc.pages().count(); i++) {

  var page = doc.pages().objectAtIndex(i);

  for (var j = 0; j < page.artboards().count(); j++) {

    var artboard = page.artboards().objectAtIndex(j);

    for (var k = 0; k < artboard.layers().count(); k++) {

      var layer = artboard.layers().objectAtIndex(k);
      parse(layer, k);
    }
  }
}

function parse(layer, level) {
  if (layer.class() == MSLayerGroup) {
    for (var i = 0; i < layer.layers().count(); i++) {
      parse(layer.layers().objectAtIndex(i), level + 1);
    }
  } else if (layer.class() == MSTextLayer){
    if ( layer.fontPostscriptName() == ".HelveticaNeueDeskInterface-Regular") {
  log("Found one!" + layer.name());
  }
  }
}