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GitLab: hide system notes in the timeline

Hides system entries about label, milestone and assignee changes in the issue and MR timeline.

Code to copy

// Remove label, milestone and assignee system notes from the current timeline
document.querySelectorAll('.timeline-entry.system-note, .note.system-note')
  .forEach(function (note) {
    const txt = (note.textContent || '').toLowerCase();
    if (/\b(label|milestone|assigned|assignee|unassigned)\b/.test(txt)) {
      note.remove();
    }
  });

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Enable the action panel, add a button in the Actions tab and paste the code into it — run it with one click.