gistfile1.js

Handlebars.registerHelper('each_with_index', function(items, options) {
  var out = '';
  for(var i=0, l=items.length; i<l; i++) {
    var key = 'Branch-' + i;
    out = out + Spark.labelBranch(key,function(){ 
      options.fn(_.extend(items[i], {rank: i}));
    });
  }
  console.log('each_with_index:')
  console.log(out)
  return out;
});