Created merge request (finally got around to this - sorry for the delay):
https://git.drupalcode.org/project/search_api_opensearch/-/merge_request...
Simple patch to check for TypeError.
Made changes to use core/once for Drupal 10 support. Patches 1.4
Sorry. Realized this is an issue with one of our internal patch. :) Please close.
Re-rolled patch #2, and also added a couple other small changes that where I have gotten errors opening Past Settings page:
/admin/config/development/past
Re-rolled #42 patch to check for empty of summary[$type] on appendTextToSummary() and prependTextToSummary() in src/Event/ParagraphSummaryAlterEvent.php
Not sure why but composer didn't seem to like that patch #23, saying it had a malformed line. Tried locally and this applied ok.
Re-rolling patch 21. It was missing the SpellcheckTextDataType file.
Re-rolled patch 90 for use on core 10.6.1
Re-rolled 2815981-15.patch for 2.1.0
Ahh... added the two new files in that last re-roll.
Re-rolling patch add_spellcheck_compatiblity--3339329-13-2x.patch for 2.0.0-beta3.
Rolling new patch of #12 for 6.2.0-rc1