Applied suggestions by CodeRabbit

Author: tg666

src/Modifier/Codec/Codec.php

@@ -29,7 +29,7 @@ public function modifiersToPath(string|array $value): string
     {
         if (!is_array($value)) {
             throw new InvalidArgumentException(
-                message: 'Can not decode value of type string, the value must be array<string, string|numeric|bool>.',
+                message: 'Can not transform value of type string, the value must be array<string, string|numeric|bool>.',
             );
         }
 

src/Responsive/Descriptor/DescriptorInterface.php

@@ -23,7 +23,7 @@ public function validateModifierValue(
     ): mixed;
 
     /**
-     * @return array<string, string|numeric|bool>
+     * @param string|numeric|bool $value
      *
      * @return array<string, string|numeric|bool>
      * @throws InvalidArgumentException

src/Responsive/Descriptor/WDescriptor.php

@@ -64,7 +64,7 @@ public function validateModifierValue(
         mixed $default,
     ): int {
         if (true === $value) {
-            if (!is_numeric($default)) {
+            if (!is_numeric($default) && [] !== $this->widths) {
                 return $this->widths[0];
             }
 

src/Responsive/Descriptor/XDescriptor.php

@@ -44,7 +44,7 @@ public function validateModifierValue(
         mixed $default,
     ): float {
         if (true === $value) {
-            if (!is_numeric($default)) {
+            if (!is_numeric($default) && [] !== $this->pixelDensities) {
                 return $this->pixelDensities[0];
             }
 

tests/Modifier/Codec/CodecTest.phpt

@@ -15,7 +15,6 @@ use SixtyEightPublishers\ImageStorage\Modifier\ModifierInterface;
 use SixtyEightPublishers\ImageStorage\Modifier\ParsableModifierInterface;
 use Tester\Assert;
 use Tester\TestCase;
-use TypeError;
 use function assert;
 
 require __DIR__ . '/../../bootstrap.php';
@@ -78,18 +77,6 @@ final class CodecTest extends TestCase
         ]));
     }
 
-    public function testExceptionShouldBeThrownIfNonStringValueIsDecoded(): void
-    {
-        $config = Mockery::mock(ConfigInterface::class);
-        $modifierCollection = Mockery::mock(ModifierCollectionInterface::class);
-        $codec = new Codec($config, $modifierCollection);
-
-        Assert::exception(
-            static fn () => $codec->pathToModifiers([]),
-            TypeError::class,
-        );
-    }
-
     public function testExceptionShouldBeThrownIfEmptyStringValueIsDecoded(): void
     {
         $config = Mockery::mock(ConfigInterface::class);