testing out the power of hoisting - turns out (obviously in retrospect) the continuation function isn't evaluated at code load time, so you have to run the printList function before the printItem function is available externally.

gistfile1.js

/*global exports, module*/

exports = module.exports = (function () {
  var api = {};

  api.printList = function () {
    ['hello', 'mr', 'smarty', 'pants'].forEach(api.printItem = function (i) {
      console.log(i);
    });
  };

  return api;
}());