From af86ca1fb3bde63ec351d78f431da5502318bc3f Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 1 Nov 2019 16:32:34 +0100
Subject: [PATCH] Output a hint that maybe you are not in the right directory,
 fixes #8404

---
 src/Composer/Command/RequireCommand.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Command/RequireCommand.php b/src/Composer/Command/RequireCommand.php
index 1fa280d3f..bb99fc310 100644
--- a/src/Composer/Command/RequireCommand.php
+++ b/src/Composer/Command/RequireCommand.php
@@ -139,7 +139,15 @@ EOT
         }
 
         $phpVersion = $this->repos->findPackage('php', '*')->getPrettyVersion();
-        $requirements = $this->determineRequirements($input, $output, $input->getArgument('packages'), $phpVersion, $preferredStability, !$input->getOption('no-update'));
+        try {
+            $requirements = $this->determineRequirements($input, $output, $input->getArgument('packages'), $phpVersion, $preferredStability, !$input->getOption('no-update'));
+        } catch (\Exception $e) {
+            if ($this->newlyCreated) {
+                throw new \RuntimeException('No composer.json present in the current directory, this may be the cause of the following exception.', 0, $e);
+            }
+
+            throw $e;
+        }
 
         $requireKey = $input->getOption('dev') ? 'require-dev' : 'require';
         $removeKey = $input->getOption('dev') ? 'require' : 'require-dev';