text: define(['../lang/toString', './lowerCase', './upperCase'], function (toString, lowerCase, upperCase) {
      /**
       * UPPERCASE first char of each word.
       */
      function properCase(str) {
          str = toString(str);
          return lowerCase(str).replace(/^\w|\s\w/g, upperCase);
      }
  
      return properCase;
  });
  