code: function microStorage ( namespace ) {
  
      list[namespace] = list[namespace] || {};
      localStorage.setItem(packageName, JSON.stringify(list));
  
      /**
      * Get or set value from storage
      * @param {String} name key
      * @param {AnyType} value value
      * @return {AnyType} value
      */
      function storage ( name, value ) {
          if (arguments.length == 0) {
              return;
          }
          if (arguments.length == 1) {
              let result = JSON.parse(localStorage.getItem(`${ namespace }.${ name }`));
              return result ? result.$ : result;
          }
          localStorage.setItem(`${ namespace }.${ name }`, JSON.stringify({ $ : value }));
          list[namespace][name] = '';
          localStorage.setItem(packageName, JSON.stringify(list));
          return value;
      };
  
      /**
      * Remove value from storage
      * @param {String} name key
      */
      storage.remove = function ( name ) {
          localStorage.removeItem(`${ namespace }.${ name }`);
          delete list[namespace][name];
          localStorage.setItem(packageName, JSON.stringify(list));
      };
  
      /**
       * Return value list of storage
       * @return {Array} list list of storage
       */
      storage.list = function () {
          return Object.keys(list[namespace]);
      };
  
      /**
       * Clear all value from storage
       */
      storage.clear = function () {
          this.list().forEach(( name ) => {
              this.remove(name);
          });
      };
  
      return storage;
  }
docs: A lite localStorage plugin with namespace
  @param {String} namespace namespace
  @return {Function} function