LibJS: Check the target function of a bound function in is_constructor

This is not exactly compliant with the specification, but our current
bound function implementation isn't either, so its not currently
possible to implement it the way the specification requires.

1 files changed, 3 insertions, 1 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index a31d56e412..99e99b1bda 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -242,7 +242,9 @@ bool Value::is_constructor() const
         return false;
     if (is<NativeFunction>(as_object()))
         return static_cast<const NativeFunction&>(as_object()).has_constructor();
-    // OrdinaryFunctionObject or BoundFunction
+    if (is<BoundFunction>(as_object()))
+        return Value(&static_cast<const BoundFunction&>(as_object()).target_function()).is_constructor();
+    // OrdinaryFunctionObject
     return true;
 }