The Drupal facets UI allows configuring the facet weight.
However, the JSON:API facet ordering is default alphabetically.
The current API response contains no weight information to allow presenting facets in the frontend according to the configured weight order.
Check the Search API response with facets, e.g /jsonapi/index/index_name?filter[fulltext]=keyword
Sort the facets by weight when adding the `meta` facet data.
Patch incoming
No user interface changes
Facet data is the same but the array order respects the configured weight from the Drupal facet UI configuration.
No data model changes.
Needs review
1.0
Code
Adding some screenshots to illustrate, with thanks for the useful module!