diff --git a/src/Attributes/functions.php b/src/Attributes/functions.php
index c37ddec..d4a09ea 100644
--- a/src/Attributes/functions.php
+++ b/src/Attributes/functions.php
@@ -14,6 +14,7 @@
 namespace Chevere\Parameter\Attributes;
 
 use Chevere\Parameter\Interfaces\ArgumentsInterface;
+use LogicException;
 use ReflectionFunction;
 use ReflectionMethod;
 use function Chevere\Parameter\parameterAttr;
@@ -67,6 +68,9 @@ function genericAttr(string $name): GenericAttr
     return parameterAttr($name, $caller);
 }
 
+/**
+ * Get Arguments for an array parameter.
+ */
 function arrayArguments(string $name): ArgumentsInterface
 {
     $caller = debug_backtrace(0, 2)[1];
@@ -95,7 +99,6 @@ function arrayArguments(string $name): ArgumentsInterface
 
 /**
  * Validates argument `$name` against attribute rules.
- * @throws LogicException
  */
 function validate(?string $name = null): void
 {
@@ -120,3 +123,23 @@ function validate(?string $name = null): void
     }
     $parameters->get($name)->__invoke($arguments[$name]);
 }
+
+/**
+ * Validates `$var` against the return attribute.
+ *
+ * @return mixed The validated `$var`.
+ */
+function returnAttr(mixed $var): mixed
+{
+    $caller = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1];
+    $class = $caller['class'] ?? null;
+    $method = $caller['function'];
+    $reflection = $class
+        ? new ReflectionMethod($class, $method)
+        : new ReflectionFunction($method);
+    /** @var ReflectionAttribute<ReturnAttr> $attribute */
+    $attribute = $reflection->getAttributes(ReturnAttr::class)[0]
+        ?? throw new LogicException('No return attribute found');
+
+    return $attribute->newInstance()->__invoke($var);
+}
diff --git a/src/ReflectionParameterTyped.php b/src/ReflectionParameterTyped.php
index 8a47402..396bc3a 100644
--- a/src/ReflectionParameterTyped.php
+++ b/src/ReflectionParameterTyped.php
@@ -26,18 +26,6 @@
 
 final class ReflectionParameterTyped implements ReflectionParameterTypedInterface
 {
-    /**
-     * @var array<string, string>
-     */
-    public const TYPE_TO_PARAMETER = [
-        'array' => ArrayParameter::class,
-        'bool' => BoolParameter::class,
-        'float' => FloatParameter::class,
-        'int' => IntParameter::class,
-        'string' => StringParameter::class,
-        'object' => ObjectParameter::class,
-    ];
-
     private ReflectionNamedType $type;
 
     private ParameterInterface $parameter;
@@ -76,7 +64,7 @@ private function getType(): ReflectionNamedType
         if ($reflectionType === null) {
             throw new TypeError(
                 (string) message(
-                    'Missing type declaration for parameter %parameter%',
+                    'Missing type declaration for parameter `%parameter%`',
                     parameter: '$' . $this->reflection->getName()
                 )
             );
diff --git a/src/functions.php b/src/functions.php
index f08150e..f978c71 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -170,37 +170,21 @@ function assertNamedArgument(
     }
 }
 
-function reflectionToParameters(ReflectionFunction|ReflectionMethod $functionOrMethod): ParametersInterface
+function toParameter(string $type): ParameterInterface
 {
-    $parameters = parameters();
-    foreach ($functionOrMethod->getParameters() as $reflection) {
-        $reflectionParameter = new ReflectionParameterTyped($reflection);
-        $callable = match ($reflection->isOptional()) {
-            true => 'withOptional',
-            default => 'withRequired',
-        };
-
-        $parameters = $parameters->{$callable}(
-            $reflection->getName(),
-            $reflectionParameter->parameter()
-        );
+    $class = TypeInterface::TYPE_TO_PARAMETER[$type]
+        ?? null;
+    if ($class === null) {
+        $class = TypeInterface::TYPE_TO_PARAMETER['object'];
+        $className = $type;
     }
-
-    return $parameters;
-}
-
-function reflectionToReturnParameter(ReflectionFunction|ReflectionMethod $reflection): ParameterInterface
-{
-    $attributes = $reflection->getAttributes(ReturnAttr::class);
-    if ($attributes === []) {
-        $type =
-        throw new LogicException('No `ReturnAttr` attribute found');
+    $parameter = new $class();
+    if (isset($className)) {
+        // @phpstan-ignore-next-line
+        $parameter = $parameter->withClassName($className);
     }
 
-    /** @var ReflectionAttribute<ReturnAttr> $attribute */
-    $attribute = $attributes[0];
-
-    return $attribute->newInstance()->parameter();
+    return $parameter;
 }
 
 function arrayFrom(
@@ -266,26 +250,6 @@ function getType(mixed $variable): string
     };
 }
 
-/**
- * Validates `$var` against the return attribute.
- *
- * @return mixed The validated `$var`.
- */
-function returnAttr(mixed $var): mixed
-{
-    $caller = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1];
-    $class = $caller['class'] ?? null;
-    $method = $caller['function'];
-    $reflection = $class
-        ? new ReflectionMethod($class, $method)
-        : new ReflectionFunction($method);
-    /** @var ReflectionAttribute<ReturnAttr> $attribute */
-    $attribute = $reflection->getAttributes(ReturnAttr::class)[0]
-        ?? throw new LogicException('No return attribute found');
-
-    return $attribute->newInstance()->__invoke($var);
-}
-
 /**
  * Retrieves a Parameter attribute instance from a function or method parameter.
  * @param array<string, string> $caller The result of debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)[1]
@@ -309,6 +273,46 @@ function parameterAttr(string $parameter, array $caller): ParameterAttributeInte
     );
 }
 
+/**
+ * Get Parameters from a function or method reflection.
+ */
+function reflectionToParameters(ReflectionFunction|ReflectionMethod $reflection): ParametersInterface
+{
+    $parameters = parameters();
+    foreach ($reflection->getParameters() as $parameter) {
+        $reflectionParameter = new ReflectionParameterTyped($parameter);
+        $callable = match ($parameter->isOptional()) {
+            true => 'withOptional',
+            default => 'withRequired',
+        };
+
+        $parameters = $parameters->{$callable}(
+            $parameter->getName(),
+            $reflectionParameter->parameter()
+        );
+    }
+
+    return $parameters;
+}
+
+/**
+ * Get a return Parameter from a function or method reflection.
+ */
+function reflectionToReturnParameter(ReflectionFunction|ReflectionMethod $reflection): ParameterInterface
+{
+    $attributes = $reflection->getAttributes(ReturnAttr::class);
+    if ($attributes === []) {
+        $returnType = (string) $reflection->getReturnType();
+
+        return toParameter($returnType);
+    }
+
+    /** @var ReflectionAttribute<ReturnAttr> $attribute */
+    $attribute = $attributes[0];
+
+    return $attribute->newInstance()->parameter();
+}
+
 function reflectedParameterAttribute(
     string $parameter,
     ReflectionParameter $reflection,
@@ -329,19 +333,3 @@ function reflectedParameterAttribute(
         (string) message('No parameter attribute for `%name%`', name: $parameter)
     );
 }
-
-function toParameter(string $type): ParameterInterface
-{
-    $class = TypeInterface::TYPE_TO_PARAMETER[$type]
-        ?? null;
-    if ($class === null) {
-        $class = TypeInterface::TYPE_TO_PARAMETER['object'];
-        $className = $type;
-    }
-    $parameter = new $class();
-    if (isset($className)) {
-        $parameter = $parameter->withClassName($className);
-    }
-
-    return $parameter;
-}
diff --git a/tests/src/UsesParameterAttributes.php b/tests/src/UsesParameterAttributes.php
index 27225c1..752bbd2 100644
--- a/tests/src/UsesParameterAttributes.php
+++ b/tests/src/UsesParameterAttributes.php
@@ -22,9 +22,9 @@
 use function Chevere\Parameter\Attributes\arrayAttr;
 use function Chevere\Parameter\Attributes\genericAttr;
 use function Chevere\Parameter\Attributes\intAttr;
+use function Chevere\Parameter\Attributes\returnAttr;
 use function Chevere\Parameter\Attributes\stringAttr;
 use function Chevere\Parameter\Attributes\validate;
-use function Chevere\Parameter\returnAttr;
 
 final class UsesParameterAttributes
 {