Lighthouse 5.16

vendor/webonyx/graphql-php/src/Language/AST/Location.php

@@ -30,14 +30,14 @@ class Location
     /**
      * The Token at which this Node begins.
      *
-     * @var Token
+     * @var Token|null
      */
     public $startToken;
 
     /**
      * The Token at which this Node ends.
      *
-     * @var Token
+     * @var Token|null
      */
     public $endToken;
 
@@ -69,7 +69,7 @@ class Location
         $this->endToken   = $endToken;
         $this->source     = $source;
 
-        if (! $startToken || ! $endToken) {
+        if ($startToken === null || $endToken === null) {
             return;
         }