Async helper deal with multiple params differently then sync helper about hbs HOT 2 CLOSED

/**
 * Registers an asynchronous helper.
 *
 * @param {String} name The name of the partial as used in a template.
 * @param {String} fn The `function(options, cb)`
 */
ExpressHbs.prototype.registerAsyncHelper = function(name, fn) {
  this.handlebars.registerHelper(name, function() {
    return async.resolve(fn.bind(this), arguments);
  });
};