use class_exists instead of interface_exists, it's the closest approx…

…imation
vimeo · Jan 16, 2022 · f8fdedd · f8fdedd
1 parent 6d23c17
commit f8fdedd
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/Psalm/Internal/PhpVisitor/Reflector/ExpressionResolver.php b/src/Psalm/Internal/PhpVisitor/Reflector/ExpressionResolver.php
@@ -460,7 +460,9 @@ private static function functionEvaluatesToTrue(
                 $string_value = (string) $function->getArgs()[0]->value->class->getAttribute('resolvedName');
             }
 
-            if ($string_value && interface_exists($string_value)) {
+            // We're using class_exists here because enum_exists doesn't exist on old versions of PHP
+            // Not sure what happens if we try to autoload or reflect on an enum on an old version of PHP though...
+            if ($string_value && class_exists($string_value)) {
                 $reflection_class = new ReflectionClass($string_value);
 
                 if ($reflection_class->getFileName() !== $file_path) {