Prevent inheritance corner-cases

What if a PHP 5 project defines Error? And it's a singleton, not an exception? And we need to throw a TypeError?

This resolves that corner case.

1 files changed, 10 insertions, 3 deletions

diff --git a/lib/error_polyfill.php b/lib/error_polyfill.php
index 57cfefd..b5257b3 100644
--- a/lib/error_polyfill.php
+++ b/lib/error_polyfill.php
@@ -35,8 +35,15 @@ if (!class_exists('Error', false)) {
 }
 
 if (!class_exists('TypeError', false)) {
-    class TypeError extends Error
-    {
-        
+    if (is_subclass_of('Error', 'Exception')) {
+        class TypeError extends Error
+        {
+            
+        }
+    } else {
+        class TypeError extends Exception
+        {
+            
+        }
     }
 }