$includeLinks value for a projection has no effect

[hg-jarlinghaus]

Describe the bug
When using projections, setting $includeLinks to false has no effect and functions the same as $includeLinks: true.

To Reproduce
Steps to reproduce the behavior:

1. Enable system projections
2. Insert a few instances of ANY_EVENT_YOU_WANT into a stream
3. Run the following projection

  options({
    $includeLinks: false,
  }) 
  fromStream("$et-ANY_EVENT_YOU_WANT")
  .when({
    $init: function(state, event) {
      return []
    },
    $any: function(state, event) {
      return [...state, event];
    },
  })

4. Run the projection again with $includeLinks: true
5. The results are identical

This applies to all streams with link events not just the system generated ones, that's just the simplest reproduction I thought of.
Expected behavior
I would expect the link events to not appear when $includeLinks is false, and the results to be empty.

Actual behavior
They appear and don't register as link events.

Config/Logs/Screenshots
True

False

EventStore details

• EventStore server version: 22.10.2

• Operating system: Ubuntu

• EventStore client version (if applicable): N/A

Additional context

Assuming you inserted all the ANY_EVENT_YOU_WANT events into STREAM_A, the state for the example reproduction basically looks as if you ran it against STREAM_A instead of $et-ANY_EVENT_YOU_WANT, except that the link metadata is populated. In other words, it sort of looks like having resolveLinkTos enabled via a client, (the eventType field is ANY_EVENT_YOU_WANT instead of $> for example) which might be causing the unexpected behavior? If that's the case, the resolveLinkTos kind of behavior for link events in projections is a feature I need, so if a fix for this changes that please have some way to preserve the current format of link events in projections.

[ylorph]

Could you explain why you need access to the link event itself ?

Is tath a change of behavior you noticed ?

note that changing this behavior will potentially break every projections that are currently in use .

[hg-jarlinghaus]

I don't at this moment have any need to access the link event, I only noticed that the $includeLinks option doesn't actually do what it says it should in the documentation and made a bug report for that. I don't know if the behavior was different at any time before