From 56474bab1550baa691b07130bebf8156cf11b653 Mon Sep 17 00:00:00 2001
From: Barney Wilks <barneywilks1@gmail.com>
Date: Thu, 9 Apr 2020 23:54:00 +0100
Subject: [PATCH] LibJS: Throw exception if LHS of assignment is of unexpected
 type

---
 Libraries/LibJS/AST.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Libraries/LibJS/AST.cpp b/Libraries/LibJS/AST.cpp
index a749d772ef..07b97edd07 100644
--- a/Libraries/LibJS/AST.cpp
+++ b/Libraries/LibJS/AST.cpp
@@ -711,7 +711,7 @@ Value AssignmentExpression::execute(Interpreter& interpreter) const
             object->put(property_name, rhs_result);
         }
     } else {
-        ASSERT_NOT_REACHED();
+        return interpreter.throw_exception<Error>("ReferenceError", "Invalid left-hand side in assignment");
     }
 
     return rhs_result;