drupal/core/modules/hal/hal.services.yml

services:
  serializer.normalizer.entity_reference_item.hal:
    class: Drupal\hal\Normalizer\EntityReferenceItemNormalizer
    arguments: ['@serialization.link_manager', '@serializer.entity_resolver']
    tags:
      - { name: normalizer, priority: 10 }
  serializer.normalizer.field_item.hal:
    class: Drupal\hal\Normalizer\FieldItemNormalizer
    tags:
      - { name: normalizer, priority: 10 }
  serializer.normalizer.field.hal:
    class: Drupal\hal\Normalizer\FieldNormalizer
    tags:
      - { name: normalizer, priority: 10 }
  serializer.normalizer.file_entity.hal:
    class: Drupal\hal\Normalizer\FileEntityNormalizer
    tags:
      - { name: normalizer, priority: 20 }
    arguments: ['@entity.manager', '@http_client', '@serialization.link_manager', '@module_handler']
  serializer.normalizer.entity.hal:
    class: Drupal\hal\Normalizer\ContentEntityNormalizer
    arguments: ['@serialization.link_manager', '@entity.manager', '@module_handler']
    tags:
      - { name: normalizer, priority: 10 }
  serializer.encoder.hal:
    class: Drupal\hal\Encoder\JsonEncoder
    tags:
      - { name: encoder, priority: 10, format: hal_json }