13 files declare their use of EntityTypeRepositoryInterface in Drupal 8

ConfigEntityNormalizerTest.php in core/modules/serialization/tests/src/Unit/Normalizer/ConfigEntityNormalizerTest.php

ContentEntityNormalizer.php in core/modules/hal/src/Normalizer/ContentEntityNormalizer.php

ContentEntityNormalizerTest.php in core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php

ContentLanguageSettingsUnitTest.php in core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php

EntityFieldManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php

Contains \Drupal\Tests\Core\Entity\EntityFieldManagerTest.

EntityManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityManagerTest.php

EntityNormalizer.php in core/modules/serialization/src/Normalizer/EntityNormalizer.php

EntityNormalizerTest.php in core/modules/serialization/tests/src/Unit/Normalizer/EntityNormalizerTest.php

EntityUnitTest.php in core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php

ExtraFieldBlockDeriver.php in core/modules/layout_builder/src/Plugin/Derivative/ExtraFieldBlockDeriver.php

FieldBlockDeriver.php in core/modules/layout_builder/src/Plugin/Derivative/FieldBlockDeriver.php

FileEntityNormalizer.php in core/modules/hal/src/Normalizer/FileEntityNormalizer.php

ResponsiveImageStyleConfigEntityUnitTest.php in core/modules/responsive_image/tests/src/Unit/ResponsiveImageStyleConfigEntityUnitTest.php