text: Vue.filter('concat', function (input, join) {
  
      function convertToArray(object) {
  
          return Array.isArray(object) ? object : Object.keys(object).map(function (key) {
  
              return object[key];
  
          });
  
      }
  
      function isObject(object) {
  
          return (typeof object === "object" && object !== null) || typeof object === "function";
  
      }
  
      if (typeof join === undefined) {
  
          return input;
  
      }
  
      if (Array.isArray(input)) {
  
          return isObject(join) ? input.concat(convertToArray(join)) : input.concat(join);
  
      }
  
      if (isObject(input)) {
  
          var array = convertToArray(input);
  
          return (isObject(join)) ? array.concat(convertToArray(join)) : array.concat(join);
  
      }
  
      return input;
  
  })