From 6a2f9870a7e7dfea187ff88ed2d4f991d11f723f Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Wed, 11 Nov 2020 17:08:23 +0100
Subject: [PATCH] Warn when init is being used non-interactively without any
 args passed in, instead of silently overwriting the file

---
 src/Composer/Command/InitCommand.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Composer/Command/InitCommand.php b/src/Composer/Command/InitCommand.php
index 7ece80ca6..885c1ba4f 100644
--- a/src/Composer/Command/InitCommand.php
+++ b/src/Composer/Command/InitCommand.php
@@ -129,6 +129,12 @@ EOT
 
                 return 1;
             }
+        } else {
+            if (json_encode($options) === '{"require":{}}') {
+                throw new \RuntimeException('You have to run this command in interactive mode, or specify at least some data using --name, --require, etc.');
+            }
+
+            $io->writeError('Writing composer.json');
         }
 
         $file->write($options);