From 9f3f420a5b1785d06b9b9170b5b953a6de04685e Mon Sep 17 00:00:00 2001
From: Matt Brown <github@muglug.com>
Date: Mon, 22 Mar 2021 09:44:15 -0400
Subject: [PATCH] Turn on unused variable detection by default on level 1

---
 src/Psalm/Config.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index 02e663cc7..62bb9a424 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -849,6 +849,15 @@ class Config
             $config->level = 2;
         }
 
+        // turn on unused variable detection in level 1
+        if (!isset($config_xml['findUnusedCode'])
+            && !isset($config_xml['findUnusedVariablesAndParams'])
+            && $config->level === 1
+            && $config->show_mixed_issues !== false
+        ) {
+            $config->find_unused_variables = true;
+        }
+
         if (isset($config_xml['errorBaseline'])) {
             $attribute_text = (string) $config_xml['errorBaseline'];
             $config->error_baseline = $attribute_text;