Prevent removing null from single null type

vimeo · May 27, 2019 · 442c307 · 442c307
1 parent c356c45
commit 442c307
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Psalm/Type/Union.php b/src/Psalm/Type/Union.php
@@ -1010,7 +1010,7 @@ public function replaceTemplateTypesWithStandins(
                         if ($input_type) {
                             $generic_param = clone $input_type;
 
-                            if ($this->isNullable() && $generic_param->isNullable()) {
+                            if ($this->isNullable() && $generic_param->isNullable() && !$generic_param->isNull()) {
                                 $generic_param->removeType('null');
                             }