Updating forEach to handle non iterable values

lib/transformData.js

@@ -11,10 +11,6 @@ var forEach = require('./forEach');
  * @returns {*} The resulting transformed data
  */
 module.exports = function transformData(data, headers, fns) {
-  if (typeof fns === 'function') {
-    return fns(data, headers);
-  }
-
   forEach(fns, function (fn) {
     data = fn(data, headers);
   });