VTTCue StartTime Adjustment

[Alazaren]

Hi,
Is it possible to change the cue startTime? I am using this code to parse my cues, but they are out of synk, basically delayed:

track.addEventListener('cuechange', () => {
    const activeCues = Array.from(track.activeCues);
    
    const cue = activeCues[0];
    // I want it to be smaller number so cue is active earlier.  
    let timestamp = cue.startTime;
});

My thoughts are as follows: because the cues are parsed earlier than they are presented, I can shift the start time. I found the configuration option hlsClientConf.cueHandler, but it is not documented. After looking inside src/utils/cues.ts, I’m not even sure if it’s possible to copy and adjust the code due to the imports.

UPD:
I was wrong. My cues are ID3MetadataCues so I think I need to modify the id3-track-controller.ts

UPD 2:
I found, I need to update function createCueWithDataFields from id3-track-controller.ts with something like this

  let start = startTime - 0.25;
  let end = start + 0.03;
  let cue = new Cue(start, end, '')

The question now is it possible without creating the fork or patch but looks like no. Maybe someone could suggest a better apporach or some pitfalls of this.