gistfile1.txt

var _ = require('lodash');

/**
 * Make sure to always return an array. If an array is passed, then 
 * return the array. If passed a string, return an array containing
 * that string. If passed undefined or null, return an empty array.
 *
 * @param [String|Array] values A string or an array
 * @return [Array] 
 */
function makeArray(values) {
  // return empty array if values is empty
  if (_.isUndefined(values) || _.isNull(values) ) {
    return [];
  }
  // return array of values, converting to array if necessary
  return !_.isArray(values) ? [values] : values;
}