Update Twig to v2.15.4

system/libs/Twig/Node/Expression/Binary/AbstractBinary.php

@@ -14,10 +14,11 @@ namespace Twig\Node\Expression\Binary;
 
 use Twig\Compiler;
 use Twig\Node\Expression\AbstractExpression;
+use Twig\Node\Node;
 
 abstract class AbstractBinary extends AbstractExpression
 {
-    public function __construct(\Twig_NodeInterface $left, \Twig_NodeInterface $right, $lineno)
+    public function __construct(Node $left, Node $right, int $lineno)
     {
         parent::__construct(['left' => $left, 'right' => $right], [], $lineno);
     }

system/libs/Twig/Node/Expression/Binary/PowerBinary.php

@@ -15,21 +15,6 @@ use Twig\Compiler;
 
 class PowerBinary extends AbstractBinary
 {
-    public function compile(Compiler $compiler)
-    {
-        if (\PHP_VERSION_ID >= 50600) {
-            return parent::compile($compiler);
-        }
-
-        $compiler
-            ->raw('pow(')
-            ->subcompile($this->getNode('left'))
-            ->raw(', ')
-            ->subcompile($this->getNode('right'))
-            ->raw(')')
-        ;
-    }
-
     public function operator(Compiler $compiler)
     {
         return $compiler->raw('**');

system/libs/Twig/Node/Expression/Binary/SpaceshipBinary.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\Node\Expression\Binary;
+
+use Twig\Compiler;
+
+class SpaceshipBinary extends AbstractBinary
+{
+    public function operator(Compiler $compiler)
+    {
+        return $compiler->raw('<=>');
+    }
+}