Meteor get unique items from a collection

Question

I have a collection Files which contain items with a userId. I want a unique array with all userIds in the collection.

Here my first approach (code from here: LINK)

Server Method

'uniqUser': function(){
  const distinct = Meteor.wrapAsync(Files.rawCollection().distinct,Files.rawCollection());
  const result = distinct('userId');
  console.log(result)
  return result
}

Client Call

uniqUser(){
  Meteor.call('uniqUser', function(err, data) {
    console.log(data);
    return data;
  });
}

the console.log looks good:

but my view show nothing!? also no errors...

uniqUser:
{{#each uniqUser}}
  <p>{{this}}</p>
{{/each}}

Answer 1

I have to use meteor-reactive-method LINK:

  uniqUser() {
     return ReactiveMethod.call("uniqUser");
  }

and eveything is fine!