bug #856 [LiveComponent] Throw clear error when using union types for LiveProps (Bart Vanderstukken)

This PR was merged into the 2.x branch.

Discussion
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[LiveComponent] Throw clear error when using union types for LiveProps

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Tickets       | Fix #853
| License       | MIT

As mentioned in #853 (comment), supporting union types for LiveProps will be quite tricky. Given that, at least a clear error should be thrown.

Commits
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af27571 Throw error when using union types for LiveProps

Author: weaverryan

src/LiveComponent/src/Metadata/LiveComponentMetadataFactory.php

@@ -71,6 +71,9 @@ public function createPropMetadatas(\ReflectionClass $class): array
             }
 
             $type = $property->getType();
+            if ($type instanceof \ReflectionUnionType || $type instanceof \ReflectionIntersectionType) {
+                throw new \LogicException(sprintf('Union or intersection types are not supported for LiveProps. You may want to change the type of property %s in %s.', $property->getName(), $property->getDeclaringClass()->getName()));
+            }
             $metadatas[$property->getName()] = new LivePropMetadata(
                 $property->getName(),
                 $attribute->newInstance(),