text: 
  if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
      module.exports = toCamelCase;
  }
  
  /**
   * Convert css-like string (e.g. property name) to camel case
   * @param  {string} str
   * @return {string}
   */
  function toCamelCase(str){
      return str.split('-').map(function(word, index) {
          if (index === 0){
              return word.toLowerCase();
          }
  
          return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase();
      }).join('');
  }
  