Add nullable

Author: Christian Kolb

src/Day.php

@@ -5,9 +5,13 @@
 namespace DigitalCraftsman\DateTimePrecision;
 
 use DigitalCraftsman\SelfAwareNormalizers\Serializer\IntNormalizable;
+use DigitalCraftsman\SelfAwareNormalizers\Serializer\NullableIntDenormalizable;
+use DigitalCraftsman\SelfAwareNormalizers\Serializer\NullableIntDenormalizableTrait;
 
-final readonly class Day implements IntNormalizable
+final readonly class Day implements IntNormalizable, NullableIntDenormalizable
 {
+    use NullableIntDenormalizableTrait;
+
     // -- Construction
 
     public function __construct(

src/Days.php

@@ -5,12 +5,16 @@
 namespace DigitalCraftsman\DateTimePrecision;
 
 use DigitalCraftsman\SelfAwareNormalizers\Serializer\ArrayNormalizable;
+use DigitalCraftsman\SelfAwareNormalizers\Serializer\NullableArrayDenormalizable;
+use DigitalCraftsman\SelfAwareNormalizers\Serializer\NullableArrayDenormalizableTrait;
 
 /**
  * @psalm-type NormalizedDays = list<int>
  */
-final readonly class Days implements ArrayNormalizable
+final readonly class Days implements ArrayNormalizable, NullableArrayDenormalizable
 {
+    use NullableArrayDenormalizableTrait;
+
     // -- Construction
 
     /**

src/Weekdays.php

@@ -5,12 +5,16 @@
 namespace DigitalCraftsman\DateTimePrecision;
 
 use DigitalCraftsman\SelfAwareNormalizers\Serializer\ArrayNormalizable;
+use DigitalCraftsman\SelfAwareNormalizers\Serializer\NullableArrayDenormalizable;
+use DigitalCraftsman\SelfAwareNormalizers\Serializer\NullableArrayDenormalizableTrait;
 
 /**
  * @psalm-type NormalizedWeekdays = list<string>
  */
-final readonly class Weekdays implements ArrayNormalizable
+final readonly class Weekdays implements ArrayNormalizable, NullableArrayDenormalizable
 {
+    use NullableArrayDenormalizableTrait;
+
     // -- Construction
 
     /**