AngularJS intercept responses - array of strings to array of objects

interceptor.js

app.config( function( $httpProvider ) {
  var interceptor = function( $q ) {
    return function( promise ) {

      var success = function(res) {
        if(res.data && res.data[0]){
          if(typeof res.data[0] === 'string'){
            var data = res.data,
                ret  = [];

            angular.forEach(data, function(d){
              ret.push({data: d});
            });

            res.data = ret;
            return res;
          }
        }
      };

      var error = function(res) { };
      promise.then( success, error );
      return promise;
    }
  };

  $httpProvider.responseInterceptors.push( interceptor );
});