From 72af70bb0640b5a66b8d109be21aaca323b6e9d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=B6ller?= <am@localheinz.com>
Date: Mon, 22 Nov 2021 11:16:02 +0100
Subject: [PATCH] Fix: Verify that locker is an instance of Locker

---
 composer-require-checker.json    | 1 +
 src/Command/NormalizeCommand.php | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/composer-require-checker.json b/composer-require-checker.json
index a11ecf3b..b1208fb7 100644
--- a/composer-require-checker.json
+++ b/composer-require-checker.json
@@ -22,6 +22,7 @@
     "Composer\\IO\\IOInterface",
     "Composer\\Json\\JsonFile",
     "Composer\\Json\\JsonValidationException",
+    "Composer\\Package\\Locker",
     "Composer\\Plugin\\Capability\\CommandProvider",
     "Composer\\Plugin\\Capable",
     "Composer\\Plugin\\PluginInterface",
diff --git a/src/Command/NormalizeCommand.php b/src/Command/NormalizeCommand.php
index 6ef4e618..57bdbfbe 100644
--- a/src/Command/NormalizeCommand.php
+++ b/src/Command/NormalizeCommand.php
@@ -17,6 +17,7 @@
 use Composer\Console\Application;
 use Composer\Factory;
 use Composer\IO;
+use Composer\Package;
 use Ergebnis\Composer\Normalize\Exception;
 use Ergebnis\Composer\Normalize\Version;
 use Ergebnis\Json\Normalizer;
@@ -181,6 +182,7 @@ protected function execute(
 
         if (
             false === $input->getOption('no-check-lock')
+            && $locker instanceof Package\Locker
             && $locker->isLocked()
             && !$locker->isFresh()
         ) {
@@ -279,6 +281,7 @@ protected function execute(
 
         if (
             true === $input->getOption('no-update-lock')
+            || !$locker instanceof Package\Locker
             || false === $locker->isLocked()
         ) {
             return 0;