Port status: Entity Reference Referential Integrity (erri)

[sdsheridan]

Name of the module, theme, or layout you are working on
Entity Reference Referential Integrity (erri)

Link to the drupal.org module, theme, or layout
https://www.drupal.org/project/erri

(Optional) Link to the drupal.org issue where you notified the Drupal maintainer(s) of this port
https://www.drupal.org/project/erri/issues/3422509

Do you need assistance with this port?
I think it should be relatively straight-forward, but happy to have a review.

[sdsheridan]

I believe I've completed the port, and it's ready for inclusion in Backdrop's modules. It's currently sitting in my repository - https://github.com/sdsheridan/erri .