diff --git a/core/lib/Drupal/Core/Field/Annotation/FieldType.php b/core/lib/Drupal/Core/Field/Annotation/FieldType.php
index de42c80..3ea4589 100644
--- a/core/lib/Drupal/Core/Field/Annotation/FieldType.php
+++ b/core/lib/Drupal/Core/Field/Annotation/FieldType.php
@@ -91,4 +91,11 @@ class FieldType extends DataType {
    */
   public $list_class;
 
+  /**
+   * Computed that should be exported in processes such as normalization.
+   *
+   * @var array
+   */
+  public $export_computed_properties = [];
+
 }
diff --git a/core/modules/hal/hal.services.yml b/core/modules/hal/hal.services.yml
index f856128..97fcbfb 100644
--- a/core/modules/hal/hal.services.yml
+++ b/core/modules/hal/hal.services.yml
@@ -8,12 +8,6 @@ services:
     class: Drupal\hal\Normalizer\FieldItemNormalizer
     tags:
       - { name: normalizer, priority: 10 }
-  serializer.normalizer.text_item.hal:
-    class: Drupal\hal\Normalizer\TextItemBaseNormalizer
-    arguments: ['@renderer']
-    tags:
-      # The priority needs to higher than serializer.normalizer.field_item.hal.
-      - { name: normalizer, priority: 20 }
   serializer.normalizer.field.hal:
     class: Drupal\hal\Normalizer\FieldNormalizer
     tags:
diff --git a/core/modules/hal/src/Normalizer/FieldItemNormalizer.php b/core/modules/hal/src/Normalizer/FieldItemNormalizer.php
index 4ccf597..cf4769a 100644
--- a/core/modules/hal/src/Normalizer/FieldItemNormalizer.php
+++ b/core/modules/hal/src/Normalizer/FieldItemNormalizer.php
@@ -3,6 +3,7 @@
 namespace Drupal\hal\Normalizer;
 
 use Drupal\Core\Field\FieldItemInterface;
+use Drupal\serialization\Normalizer\ComputedPropertiesNormalizerTrait;
 use Symfony\Component\Serializer\Exception\InvalidArgumentException;
 
 /**
@@ -10,6 +11,8 @@
  */
 class FieldItemNormalizer extends NormalizerBase {
 
+  use ComputedPropertiesNormalizerTrait;
+
   /**
    * The interface or class that this Normalizer supports.
    *
@@ -30,6 +33,8 @@ public function normalize($field_item, $format = NULL, array $context = []) {
       $values[$property_name] = $this->serializer->normalize($property, $format, $context);
     }
 
+    $values = array_merge($values, $this->getComputedAttributes($field_item, $format, $context));
+
     if (isset($context['langcode'])) {
       $values['lang'] = $context['langcode'];
     }
diff --git a/core/modules/hal/src/Normalizer/TextItemBaseNormalizer.php b/core/modules/hal/src/Normalizer/TextItemBaseNormalizer.php
deleted file mode 100644
index 84adaf3..0000000
--- a/core/modules/hal/src/Normalizer/TextItemBaseNormalizer.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-
-namespace Drupal\hal\Normalizer;
-
-use Drupal\Core\Render\RendererInterface;
-use Drupal\text\Plugin\Field\FieldType\TextItemBase;
-
-/**
- * Adds processed text from text fields to normalizer data.
- *
- * This class does not implement DenormalizerInterface because the 'processed'
- * attribute is computed and represents text processed by the filter system
- * therefore it cannot be provided when creating new entities.
- */
-class TextItemBaseNormalizer extends FieldItemNormalizer {
-
-  /**
-   * The renderer.
-   *
-   * @var \Drupal\Core\Render\RendererInterface
-   */
-  protected $renderer;
-
-  /**
-   * {@inheritdoc}
-   */
-  protected $supportedInterfaceOrClass = TextItemBase::class;
-
-  /**
-   * Constructs a TextItemBaseNormalizer object.
-   *
-   * @param \Drupal\Core\Render\RendererInterface $renderer
-   *   The renderer service.
-   */
-  public function __construct(RendererInterface $renderer) {
-    $this->renderer = $renderer;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function normalize($field_item, $format = NULL, array $context = array()) {
-    /** @var \Drupal\text\Plugin\Field\FieldType\TextItemBase $field_item */
-    $values = parent::normalize($field_item, $format, $context);
-
-    $field = $field_item->getParent();
-
-    $processed_text = $field_item->process_result;
-    if (!empty($context['cacheability'])) {
-      /** @var \Drupal\Core\Cache\CacheableMetadata $cacheability */
-      $cacheability = $context['cacheability'];
-      $cacheability->addCacheableDependency($processed_text);
-    }
-    $values[$field->getName()][0]['processed'] = $this->serializer->normalize($processed_text->getProcessedText(), $format, $context);
-    return $values;
-  }
-
-}
diff --git a/core/modules/hal/tests/src/Kernel/NormalizeTest.php b/core/modules/hal/tests/src/Kernel/NormalizeTest.php
index 34555cd..e77d4b4 100644
--- a/core/modules/hal/tests/src/Kernel/NormalizeTest.php
+++ b/core/modules/hal/tests/src/Kernel/NormalizeTest.php
@@ -175,7 +175,7 @@ public function testNormalize() {
         [
           'value' => $values['field_test_text']['value'],
           'format' => $values['field_test_text']['format'],
-          'processed' => "<p>{$values['field_test_text']['value']}</p>",
+          'process_result' => "<p>{$values['field_test_text']['value']}</p>",
         ],
       ],
     ];
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php
index 2b582ec..0244f00 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Comment/CommentResourceTestBase.php
@@ -201,7 +201,7 @@ protected function getExpectedNormalizedEntity() {
         [
           'value' => 'The name "llama" was adopted by European settlers from native Peruvians.',
           'format' => 'plain_text',
-          'processed' => '<p>The name &quot;llama&quot; was adopted by European settlers from native Peruvians.</p>' . "\n",
+          'process_result' => '<p>The name &quot;llama&quot; was adopted by European settlers from native Peruvians.</p>' . "\n",
         ],
       ],
     ];
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/EntityTest/EntityTestTextItemNormalizerTest.php b/core/modules/rest/tests/src/Functional/EntityResource/EntityTest/EntityTestTextItemNormalizerTest.php
index b6f0a0f..c563b5c 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/EntityTest/EntityTestTextItemNormalizerTest.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/EntityTest/EntityTestTextItemNormalizerTest.php
@@ -31,7 +31,7 @@ protected function getExpectedNormalizedEntity() {
       [
         'value' => 'Cádiz is the oldest continuously inhabited city in Spain and a nice place to spend a Sunday with friends.',
         'format' => 'plain_text',
-        'processed' => '<p>Cádiz is the oldest continuously inhabited city in Spain and a nice place to spend a Sunday with friends.</p>' . "\n",
+        'process_result' => '<p>Cádiz is the oldest continuously inhabited city in Spain and a nice place to spend a Sunday with friends.</p>' . "\n",
       ],
     ];
     return $expected;
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Term/TermResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermResourceTestBase.php
index c050789..4d6b300 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/Term/TermResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermResourceTestBase.php
@@ -97,7 +97,7 @@ protected function getExpectedNormalizedEntity() {
         [
           'value' => 'It is a little known fact that llamas cannot count higher the seven.',
           'format' => NULL,
-          'processed' => "<p>It is a little known fact that llamas cannot count higher the seven.</p>\n",
+          'process_result' => "<p>It is a little known fact that llamas cannot count higher the seven.</p>\n",
         ],
       ],
       'parent' => [],
diff --git a/core/modules/serialization/src/Normalizer/ComputedPropertiesNormalizerTrait.php b/core/modules/serialization/src/Normalizer/ComputedPropertiesNormalizerTrait.php
new file mode 100644
index 0000000..3cf6148
--- /dev/null
+++ b/core/modules/serialization/src/Normalizer/ComputedPropertiesNormalizerTrait.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace Drupal\serialization\Normalizer;
+
+use Drupal\Core\Cache\CacheableDependencyInterface;
+use Drupal\Core\Field\FieldItemInterface;
+
+/**
+ * Normalization methods for computed field properties.
+ */
+trait ComputedPropertiesNormalizerTrait {
+
+  /**
+   * Normalized attributes for computed properties.
+   *
+   * @param \Drupal\Core\Field\FieldItemInterface $field_item
+   *   The field item being normalized.
+   * @param string $format
+   *   The normalization format.
+   * @param array $context
+   *   The context passed into the Normalizer.
+   *
+   * @return array
+   *   The normalized attributes from computed properties.
+   */
+  protected function getComputedAttributes(FieldItemInterface $field_item, $format, array $context) {
+    $attributes = [];
+    $plugin_definition = $field_item->getPluginDefinition();
+    foreach ($plugin_definition['export_computed_properties'] as $export_computed_property) {
+      $property = $field_item->get($export_computed_property);
+      $attribute = $this->serializer->normalize($property, $format, $context);
+
+      if ($attribute instanceof CacheableDependencyInterface && isset($context['cacheability'])) {
+        $context['cacheability']->addCacheableDependency($attribute);
+
+      }
+      if (is_object($attribute) && method_exists($attribute, '__toString')) {
+        $attribute = (string) $attribute;
+      }
+      $attributes[$export_computed_property] = $attribute;
+    }
+    return $attributes;
+  }
+
+}
diff --git a/core/modules/serialization/src/Normalizer/FieldItemNormalizer.php b/core/modules/serialization/src/Normalizer/FieldItemNormalizer.php
index decca43..0f8dbfe 100644
--- a/core/modules/serialization/src/Normalizer/FieldItemNormalizer.php
+++ b/core/modules/serialization/src/Normalizer/FieldItemNormalizer.php
@@ -11,6 +11,8 @@
  */
 class FieldItemNormalizer extends ComplexDataNormalizer implements DenormalizerInterface {
 
+  use ComputedPropertiesNormalizerTrait;
+
   /**
    * {@inheritdoc}
    */
@@ -54,4 +56,18 @@ protected function constructValue($data, $context) {
     return $data;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function normalize($object, $format = NULL, array $context = []) {
+    $attributes = [];
+    /** @var \Drupal\Core\Field\FieldItemInterface $object */
+    foreach ($object as $name => $field) {
+      $attributes[$name] = $this->serializer->normalize($field, $format, $context);
+    }
+
+    $attributes = array_merge($attributes, $this->getComputedAttributes($object, $format, $context));
+    return $attributes;
+  }
+
 }
diff --git a/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php b/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php
index 35e69e4..094a877 100644
--- a/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php
+++ b/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php
@@ -154,7 +154,7 @@ public function testNormalize() {
         [
           'value' => $this->values['field_test_text']['value'],
           'format' => $this->values['field_test_text']['format'],
-          'processed' => "<p>{$this->values['field_test_text']['value']}</p>",
+          'process_result' => "<p>{$this->values['field_test_text']['value']}</p>",
         ],
       ],
     ];
@@ -220,7 +220,7 @@ public function testSerialize() {
       'revision_id' => '<revision_id><value>' . $this->entity->getRevisionId() . '</value></revision_id>',
       'default_langcode' => '<default_langcode><value>1</value></default_langcode>',
       'non_rev_field' => '<non_rev_field/>',
-      'field_test_text' => '<field_test_text><value>' . $this->values['field_test_text']['value'] . '</value><format>' . $this->values['field_test_text']['format'] . '</format><processed><![CDATA[<p>' . $this->values['field_test_text']['value'] . '</p>]]></processed></field_test_text>',
+      'field_test_text' => '<field_test_text><value>' . $this->values['field_test_text']['value'] . '</value><format>' . $this->values['field_test_text']['format'] . '</format><process_result><![CDATA[<p>' . $this->values['field_test_text']['value'] . '</p>]]></process_result></field_test_text>',
     ];
     // Sort it in the same order as normalised.
     $expected = array_merge($normalized, $expected);
diff --git a/core/modules/text/src/Normalizer/TextItemBaseNormalizer.php b/core/modules/text/src/Normalizer/TextItemBaseNormalizer.php
deleted file mode 100644
index 495efa2..0000000
--- a/core/modules/text/src/Normalizer/TextItemBaseNormalizer.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-
-namespace Drupal\text\Normalizer;
-
-use Drupal\Core\Render\RendererInterface;
-use Drupal\serialization\Normalizer\ComplexDataNormalizer;
-
-/**
- * Adds processed text from text fields to normalizer data.
- *
- * This class does not implement DenormalizerInterface because the 'processed'
- * attribute is computed and represents text processed by the filter system
- * therefore it cannot be provided when creating new entities.
- */
-class TextItemBaseNormalizer extends ComplexDataNormalizer {
-
-  /**
-   * The renderer.
-   *
-   * @var \Drupal\Core\Render\RendererInterface
-   */
-  protected $renderer;
-
-  /**
-   * {@inheritdoc}
-   */
-  protected $supportedInterfaceOrClass = 'Drupal\text\Plugin\Field\FieldType\TextItemBase';
-
-  /**
-   * Constructs a TextItemBaseNormalizer object.
-   *
-   * @param \Drupal\Core\Render\RendererInterface $renderer
-   *   The renderer service.
-   */
-  public function __construct(RendererInterface $renderer) {
-    $this->renderer = $renderer;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function normalize($field_item, $format = NULL, array $context = []) {
-    $attributes = parent::normalize($field_item, $format, $context);
-    /** @var \Drupal\filter\FilterProcessResult $processed_text */
-    $processed_text = $field_item->process_result;
-    if (!empty($context['cacheability'])) {
-      /** @var \Drupal\Core\Cache\CacheableMetadata $cacheability */
-      $cacheability = $context['cacheability'];
-      $cacheability->addCacheableDependency($processed_text);
-    }
-    $attributes['processed'] = $this->serializer->normalize($processed_text->getProcessedText(), $format, $context);
-    return $attributes;
-  }
-
-}
diff --git a/core/modules/text/src/Plugin/Field/FieldType/TextItem.php b/core/modules/text/src/Plugin/Field/FieldType/TextItem.php
index 447a0b1..a22e561 100644
--- a/core/modules/text/src/Plugin/Field/FieldType/TextItem.php
+++ b/core/modules/text/src/Plugin/Field/FieldType/TextItem.php
@@ -14,7 +14,8 @@
  *   description = @Translation("This field stores a text with a text format."),
  *   category = @Translation("Text"),
  *   default_widget = "text_textfield",
- *   default_formatter = "text_default"
+ *   default_formatter = "text_default",
+ *   export_computed_properties = { "process_result" }
  * )
  */
 class TextItem extends TextItemBase {
diff --git a/core/modules/text/src/Plugin/Field/FieldType/TextLongItem.php b/core/modules/text/src/Plugin/Field/FieldType/TextLongItem.php
index 15e4eb6..e04c328 100644
--- a/core/modules/text/src/Plugin/Field/FieldType/TextLongItem.php
+++ b/core/modules/text/src/Plugin/Field/FieldType/TextLongItem.php
@@ -13,7 +13,8 @@
  *   description = @Translation("This field stores a long text with a text format."),
  *   category = @Translation("Text"),
  *   default_widget = "text_textarea",
- *   default_formatter = "text_default"
+ *   default_formatter = "text_default",
+ *   export_computed_properties = { "process_result" }
  * )
  */
 class TextLongItem extends TextItemBase {
diff --git a/core/modules/text/src/Plugin/Field/FieldType/TextWithSummaryItem.php b/core/modules/text/src/Plugin/Field/FieldType/TextWithSummaryItem.php
index 6af6d04..5d48488 100644
--- a/core/modules/text/src/Plugin/Field/FieldType/TextWithSummaryItem.php
+++ b/core/modules/text/src/Plugin/Field/FieldType/TextWithSummaryItem.php
@@ -15,7 +15,8 @@
  *   description = @Translation("This field stores long text with a format and an optional summary."),
  *   category = @Translation("Text"),
  *   default_widget = "text_textarea_with_summary",
- *   default_formatter = "text_default"
+ *   default_formatter = "text_default",
+ *   export_computed_properties = { "process_result" }
  * )
  */
 class TextWithSummaryItem extends TextItemBase {
diff --git a/core/modules/text/text.services.yml b/core/modules/text/text.services.yml
deleted file mode 100644
index 0d13007..0000000
--- a/core/modules/text/text.services.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-services:
-  serializer.normalizer.text_item_base:
-    class: Drupal\text\Normalizer\TextItemBaseNormalizer
-    arguments: ['@renderer', '@config.factory']
-    tags:
-      # This normalizer needs to be the same or greater priority than serializer.normalizer.field_item.hal
-      - { name: normalizer, priority: 10 }
-