Do not use empty()

Author: sebastianbergmann

src/type/IntersectionType.php

@@ -34,7 +34,7 @@ public function __construct(Type ...$types)
         $this->ensureOnlyValidTypes(...$types);
         $this->ensureNoDuplicateTypes(...$types);
 
-        assert(!empty($types));
+        assert($types !== []);
 
         $this->types = $types;
     }

src/type/UnionType.php

@@ -32,7 +32,7 @@ public function __construct(Type ...$types)
         $this->ensureMinimumOfTwoTypes(...$types);
         $this->ensureOnlyValidTypes(...$types);
 
-        assert(!empty($types));
+        assert($types !== []);
 
         $this->types = $types;
     }