diff --git a/src/Button.php b/src/Button.php
index 8a68774..fed7737 100644
--- a/src/Button.php
+++ b/src/Button.php
@@ -11,15 +11,11 @@
  */
 final class Button implements View
 {
-    private Url $url;
-    private View $label;
-    private bool $selected;
-
-    private function __construct(Url $url, View $label, bool $selected)
-    {
-        $this->url = $url;
-        $this->label = $label;
-        $this->selected = $selected;
+    private function __construct(
+        private Url $url,
+        private View $label,
+        private bool $selected,
+    ) {
     }
 
     /**
diff --git a/src/Card.php b/src/Card.php
index 2a7af56..c9a3f86 100644
--- a/src/Card.php
+++ b/src/Card.php
@@ -10,11 +10,8 @@
  */
 final class Card implements View
 {
-    private View $inner;
-
-    private function __construct(View $inner)
+    private function __construct(private View $inner)
     {
-        $this->inner = $inner;
     }
 
     /**
diff --git a/src/Center.php b/src/Center.php
index 5a703b1..ffc8917 100644
--- a/src/Center.php
+++ b/src/Center.php
@@ -10,11 +10,8 @@
  */
 final class Center implements View
 {
-    private View $inner;
-
-    private function __construct(View $inner)
+    private function __construct(private View $inner)
     {
-        $this->inner = $inner;
     }
 
     /**
diff --git a/src/Grid.php b/src/Grid.php
index 56a3df2..6621095 100644
--- a/src/Grid.php
+++ b/src/Grid.php
@@ -11,15 +11,11 @@
  */
 final class Grid implements View
 {
-    /** @var Sequence<Card> */
-    private Sequence $cards;
-
     /**
      * @param Sequence<Card> $cards
      */
-    private function __construct(Sequence $cards)
+    private function __construct(private Sequence $cards)
     {
-        $this->cards = $cards;
     }
 
     /**
diff --git a/src/Image.php b/src/Image.php
index 11c36be..ec18818 100644
--- a/src/Image.php
+++ b/src/Image.php
@@ -11,11 +11,8 @@
  */
 final class Image implements View
 {
-    private Url $src;
-
-    private function __construct(Url $src)
+    private function __construct(private Url $src)
     {
-        $this->src = $src;
     }
 
     /**
diff --git a/src/Listing.php b/src/Listing.php
index 524b897..01a2086 100644
--- a/src/Listing.php
+++ b/src/Listing.php
@@ -11,15 +11,11 @@
  */
 final class Listing implements View
 {
-    /** @var Sequence<View> */
-    private Sequence $elements;
-
     /**
      * @param Sequence<View> $elements
      */
-    private function __construct(Sequence $elements)
+    private function __construct(private Sequence $elements)
     {
-        $this->elements = $elements;
     }
 
     /**
diff --git a/src/NavigationLink.php b/src/NavigationLink.php
index 6609085..6deb547 100644
--- a/src/NavigationLink.php
+++ b/src/NavigationLink.php
@@ -11,15 +11,11 @@
  */
 final class NavigationLink implements View
 {
-    private Url $url;
-    private View $label;
-    private bool $selected;
-
-    private function __construct(Url $url, View $label, bool $selected)
-    {
-        $this->url = $url;
-        $this->label = $label;
-        $this->selected = $selected;
+    private function __construct(
+        private Url $url,
+        private View $label,
+        private bool $selected,
+    ) {
     }
 
     /**
diff --git a/src/Picker.php b/src/Picker.php
index b78dfb3..7fcec84 100644
--- a/src/Picker.php
+++ b/src/Picker.php
@@ -11,22 +11,14 @@
  */
 final class Picker implements View
 {
-    private \UnitEnum $selected;
-    /** @var Sequence<Picker\Value> */
-    private Sequence $values;
-    private bool $disable;
-
     /**
      * @param Sequence<Picker\Value> $values
      */
     private function __construct(
-        \UnitEnum $selected,
-        Sequence $values,
-        bool $disable,
+        private \UnitEnum $selected,
+        private Sequence $values,
+        private bool $disable,
     ) {
-        $this->selected = $selected;
-        $this->values = $values;
-        $this->disable = $disable;
     }
 
     /**
diff --git a/src/Picker/Value.php b/src/Picker/Value.php
index 717be65..30139a7 100644
--- a/src/Picker/Value.php
+++ b/src/Picker/Value.php
@@ -11,17 +11,13 @@
  */
 final class Value
 {
-    /** @var T */
-    private \UnitEnum $tag;
-    private View $view;
-
     /**
      * @param T $tag
      */
-    private function __construct(\UnitEnum $tag, View $view)
-    {
-        $this->tag = $tag;
-        $this->view = $view;
+    private function __construct(
+        private \UnitEnum $tag,
+        private View $view,
+    ) {
     }
 
     /**
diff --git a/src/ScrollView.php b/src/ScrollView.php
index fa1a9a8..7f8f598 100644
--- a/src/ScrollView.php
+++ b/src/ScrollView.php
@@ -10,11 +10,8 @@
  */
 final class ScrollView implements View
 {
-    private View $inner;
-
-    private function __construct(View $inner)
+    private function __construct(private View $inner)
     {
-        $this->inner = $inner;
     }
 
     /**
diff --git a/src/Shape/Kind.php b/src/Shape/Kind.php
index 30d9bea..2a06e6a 100644
--- a/src/Shape/Kind.php
+++ b/src/Shape/Kind.php
@@ -15,13 +15,10 @@
  */
 final class Kind implements View
 {
-    private View $inner;
-    private string $kind;
-
-    private function __construct(View $inner, string $kind)
-    {
-        $this->inner = $inner;
-        $this->kind = $kind;
+    private function __construct(
+        private View $inner,
+        private string $kind,
+    ) {
     }
 
     /**
diff --git a/src/Stack.php b/src/Stack.php
index ff45c0c..bd59286 100644
--- a/src/Stack.php
+++ b/src/Stack.php
@@ -11,17 +11,13 @@
  */
 final class Stack implements View
 {
-    private bool $horizontal;
-    /** @var Sequence<View> */
-    private Sequence $views;
-
     /**
      * @param Sequence<View> $views
      */
-    private function __construct(bool $horizontal, Sequence $views)
-    {
-        $this->horizontal = $horizontal;
-        $this->views = $views;
+    private function __construct(
+        private bool $horizontal,
+        private Sequence $views,
+    ) {
     }
 
     /**
diff --git a/src/Svg.php b/src/Svg.php
index d67df9b..fd085db 100644
--- a/src/Svg.php
+++ b/src/Svg.php
@@ -10,11 +10,8 @@
  */
 final class Svg implements View
 {
-    private Content $data;
-
-    private function __construct(Content $data)
+    private function __construct(private Content $data)
     {
-        $this->data = $data;
     }
 
     /**
diff --git a/src/Text.php b/src/Text.php
index 8627b8f..9ff887d 100644
--- a/src/Text.php
+++ b/src/Text.php
@@ -10,11 +10,8 @@
  */
 final class Text implements View
 {
-    private string $text;
-
-    private function __construct(string $text)
+    private function __construct(private string $text)
     {
-        $this->text = $text;
     }
 
     /**
diff --git a/src/Toolbar.php b/src/Toolbar.php
index 46a9f75..3943e81 100644
--- a/src/Toolbar.php
+++ b/src/Toolbar.php
@@ -10,18 +10,11 @@
  */
 final class Toolbar implements View
 {
-    private View $label;
-    private ?View $leading;
-    private ?View $trailing;
-
     private function __construct(
-        View $label,
-        ?View $leading,
-        ?View $trailing,
+        private View $label,
+        private ?View $leading,
+        private ?View $trailing,
     ) {
-        $this->label = $label;
-        $this->leading = $leading;
-        $this->trailing = $trailing;
     }
 
     /**
diff --git a/src/View/Container.php b/src/View/Container.php
index 39d3459..639fb2b 100644
--- a/src/View/Container.php
+++ b/src/View/Container.php
@@ -15,11 +15,8 @@
  */
 final class Container implements View
 {
-    private View $view;
-
-    private function __construct(View $view)
+    private function __construct(private View $view)
     {
-        $this->view = $view;
     }
 
     /**
diff --git a/src/Window.php b/src/Window.php
index b838c65..65ce9a0 100644
--- a/src/Window.php
+++ b/src/Window.php
@@ -11,18 +11,11 @@
  */
 final class Window implements View
 {
-    private string $title;
-    private ?View $body;
-    private ?Url $style;
-
     private function __construct(
-        string $title,
-        ?View $body,
-        ?Url $style,
+        private string $title,
+        private ?View $body,
+        private ?Url $style,
     ) {
-        $this->title = $title;
-        $this->body = $body;
-        $this->style = $style;
     }
 
     /**
diff --git a/src/Zoom.php b/src/Zoom.php
index acbea60..f64afd8 100644
--- a/src/Zoom.php
+++ b/src/Zoom.php
@@ -10,17 +10,13 @@
  */
 final class Zoom implements View
 {
-    private View $inner;
-    /** @var int<1, 100> */
-    private int $size;
-
     /**
      * @param int<1, 100> $size
      */
-    private function __construct(View $inner, int $size)
-    {
-        $this->inner = $inner;
-        $this->size = $size;
+    private function __construct(
+        private View $inner,
+        private int $size,
+    ) {
     }
 
     /**