All of our tests now throw this warning when you test them on 9.0.x and up:
1x: Declaring ::setUp without a void return typehint in Drupal\Tests\entitygroupfield\FunctionalJavascript\EntityGroupFieldWidgetTest is deprecated in drupal:9.0.0. Typehinting will be required before drupal:10.0.0. See https://www.drupal.org/node/3114724
It looks like PHP return type hints are allowed as of PHP7. We require core 8.8, which requires PHP 7.0.8 and up. So I *think* we're safe to do this now.
Fixed
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Yay, we officially definitely no longer care about PHP 5, so this can proceed (and help with the D10 porting).
Automatically closed - issue fixed for 2 weeks with no activity.