Move to PHPStan level 5

src/ExpressionParser/Infix/ArgumentsTrait.php

@@ -12,6 +12,7 @@
 namespace Twig\ExpressionParser\Infix;
 
 use Twig\Error\SyntaxError;
+use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Expression\ArrayExpression;
 use Twig\Node\Expression\Binary\SetBinary;
 use Twig\Node\Expression\Unary\SpreadUnary;
@@ -27,6 +28,7 @@ trait ArgumentsTrait
     {
         $arguments = new ArrayExpression([], $line);
         foreach ($this->parseNamedArguments($parser, $parseOpenParenthesis) as $k => $n) {
+            /** @var AbstractExpression $n */
             $arguments->addElement($n, new LocalVariable($k, $line));
         }
 

src/ExpressionParser/Infix/FunctionExpressionParser.php

@@ -20,6 +20,7 @@ use Twig\Node\EmptyNode;
 use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Expression\MacroReferenceExpression;
 use Twig\Node\Expression\Variable\ContextVariable;
+use Twig\Node\Expression\Variable\TemplateVariable;
 use Twig\Parser;
 use Twig\Token;
 
@@ -40,7 +41,10 @@ final class FunctionExpressionParser extends AbstractExpressionParser implements
         $name = $expr->getAttribute('name');
 
         if (null !== $alias = $parser->getImportedSymbol('function', $name)) {
-            return new MacroReferenceExpression($alias['node']->getNode('var'), $alias['name'], $this->parseCallableArguments($parser, $line, false), $line);
+            /** @var TemplateVariable $var */
+            $var = $alias['node']->getNode('var');
+
+            return new MacroReferenceExpression($var, $alias['name'], $this->parseCallableArguments($parser, $line, false), $line);
         }
 
         $args = $this->parseNamedArguments($parser, false);

src/ExpressionParser/Infix/IsExpressionParser.php

@@ -19,6 +19,7 @@ use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Expression\ArrayExpression;
 use Twig\Node\Expression\MacroReferenceExpression;
 use Twig\Node\Expression\Variable\ContextVariable;
+use Twig\Node\Expression\Variable\TemplateVariable;
 use Twig\Node\Nodes;
 use Twig\Parser;
 use Twig\Token;
@@ -43,7 +44,9 @@ class IsExpressionParser extends AbstractExpressionParser implements InfixExpres
         }
 
         if ('defined' === $test->getName() && $expr instanceof ContextVariable && null !== $alias = $parser->getImportedSymbol('function', $expr->getAttribute('name'))) {
-            $expr = new MacroReferenceExpression($alias['node']->getNode('var'), $alias['name'], new ArrayExpression([], $expr->getTemplateLine()), $expr->getTemplateLine());
+            /** @var TemplateVariable $var */
+            $var = $alias['node']->getNode('var');
+            $expr = new MacroReferenceExpression($var, $alias['name'], new ArrayExpression([], $expr->getTemplateLine()), $expr->getTemplateLine());
         }
 
         return new ($test->getNodeClass())($expr, $test, $arguments, $stream->getCurrent()->getLine());