From cf7c5c2a0deedd391ab857f5689c7e95e1049fc4 Mon Sep 17 00:00:00 2001
From: Matt Brown <github@muglug.com>
Date: Thu, 25 Jan 2018 11:07:16 -0500
Subject: [PATCH] Fix #470 - follow vendor directory symlinks

---
 src/Psalm/Config.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index ab905098b..eacf5ec73 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -845,7 +845,11 @@ class Config
      */
     public function getComposerClassMap()
     {
-        $vendor_dir = $this->base_dir . 'vendor'; // this should ideally not be hardcoded
+        $vendor_dir = realpath($this->base_dir . 'vendor'); // this should ideally not be hardcoded
+
+        if (!$vendor_dir) {
+            return [];
+        }
 
         $autoload_files_classmap =
             $vendor_dir . DIRECTORY_SEPARATOR . 'composer' . DIRECTORY_SEPARATOR . 'autoload_classmap.php';