--- /dev/null
+<?php
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Converter\Functions;
+
+use Drupal\drupalmoduleupgrader\TargetInterface;
+use Pharborist\Functions\FunctionCallNode;
+use Pharborist\Objects\ClassMethodCallNode;
+
+/**
+ * @Converter(
+ * id = "variable_set",
+ * description = @Translation("Replaces variable_set() calls with Configuration API.")
+ * )
+ */
+class VariableSet extends VariableAPI {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function rewrite(FunctionCallNode $call, TargetInterface $target) {
+ if ($this->tryRewrite($call, $target)) {
+ $arguments = $call->getArguments();
+
+ return ClassMethodCallNode::create('\Drupal', 'configFactory')
+ ->appendMethodCall('getEditable')
+ ->appendArgument($target->id() . '.settings')
+ ->appendMethodCall('set')
+ ->appendArgument(clone $arguments[0])
+ ->appendArgument(clone $arguments[1])
+ ->appendMethodCall('save');
+ }
+ }
+
+}