diff --git a/source/JsMaterialX/JsMaterialXCore/JsDefinition.cpp b/source/JsMaterialX/JsMaterialXCore/JsDefinition.cpp
index b86816ab08..0991c41901 100644
--- a/source/JsMaterialX/JsMaterialXCore/JsDefinition.cpp
+++ b/source/JsMaterialX/JsMaterialXCore/JsDefinition.cpp
@@ -30,7 +30,6 @@ EMSCRIPTEN_BINDINGS(definition)
         .function("getNodeGroup", &mx::NodeDef::getNodeGroup)
         BIND_MEMBER_FUNC("getImplementation", mx::NodeDef, getImplementation, 0, 1, stRef)
         .function("isVersionCompatible", &mx::NodeDef::isVersionCompatible)
-        BIND_MEMBER_FUNC("getDeclaration", mx::NodeDef, getDeclaration, 0, 1, stRef)
         .class_property("CATEGORY", &mx::NodeDef::CATEGORY)
         .class_property("NODE_ATTRIBUTE", &mx::NodeDef::NODE_ATTRIBUTE)
         .class_property("NODE_GROUP_ATTRIBUTE", &mx::NodeDef::NODE_GROUP_ATTRIBUTE)
@@ -53,7 +52,6 @@ EMSCRIPTEN_BINDINGS(definition)
         .function("getFunction", &mx::Implementation::getFunction)
         .function("setNodeDef", &mx::Implementation::setNodeDef)
         .function("getNodeDef", &mx::Implementation::getNodeDef)
-        BIND_MEMBER_FUNC("getDeclaration", mx::Implementation, getDeclaration, 0, 1, stRef)
         .class_property("CATEGORY", &mx::Implementation::CATEGORY)
         .class_property("FILE_ATTRIBUTE", &mx::Implementation::FILE_ATTRIBUTE)
         .class_property("FUNCTION_ATTRIBUTE", &mx::Implementation::FUNCTION_ATTRIBUTE);
diff --git a/source/JsMaterialX/JsMaterialXCore/JsInterface.cpp b/source/JsMaterialX/JsMaterialXCore/JsInterface.cpp
index 24aa3c96ad..88b4394245 100644
--- a/source/JsMaterialX/JsMaterialXCore/JsInterface.cpp
+++ b/source/JsMaterialX/JsMaterialXCore/JsInterface.cpp
@@ -61,7 +61,6 @@ EMSCRIPTEN_BINDINGS(interface)
     ems::class_<mx::Output, ems::base<mx::PortElement>>("Output")
         .smart_ptr_constructor("Output", &std::make_shared<mx::Output, mx::ElementPtr, const std::string &>)
         .smart_ptr<std::shared_ptr<const mx::Output>>("Output")
-        BIND_MEMBER_FUNC("getUpstreamEdge", mx::Output, getUpstreamEdge, 0, 1, std::size_t)
         .function("getUpstreamEdgeCount", &mx::Output::getUpstreamEdgeCount)
         .function("hasUpstreamCycle", &mx::Output::hasUpstreamCycle)
         .class_property("CATEGORY", &mx::Output::CATEGORY)
diff --git a/source/JsMaterialX/JsMaterialXCore/JsNode.cpp b/source/JsMaterialX/JsMaterialXCore/JsNode.cpp
index 882fd9fa90..7777bec503 100644
--- a/source/JsMaterialX/JsMaterialXCore/JsNode.cpp
+++ b/source/JsMaterialX/JsMaterialXCore/JsNode.cpp
@@ -26,11 +26,9 @@ EMSCRIPTEN_BINDINGS(node)
         .function("getConnectedOutput", &mx::Node::getConnectedOutput)
         BIND_MEMBER_FUNC("getNodeDef", mx::Node, getNodeDef, 0, 1, stRef)
         BIND_MEMBER_FUNC("getImplementation", mx::Node, getImplementation, 0, 1, stRef)
-        BIND_MEMBER_FUNC("getUpstreamEdge", mx::Node, getUpstreamEdge, 0, 1, size_t)
         .function("getUpstreamEdgeCount", &mx::Node::getUpstreamEdgeCount)
         .function("getNodeDefOutput", &mx::Node::getNodeDefOutput)
         .function("getDownstreamPorts", &mx::Node::getDownstreamPorts)
-        BIND_MEMBER_FUNC("getDeclaration", mx::Node, getDeclaration, 0, 1, stRef)
         .function("addInputFromNodeDef", &mx::Node::addInputFromNodeDef)
         .class_property("CATEGORY", &mx::Node::CATEGORY);
 
@@ -59,7 +57,6 @@ EMSCRIPTEN_BINDINGS(node)
         .function("setNodeDef", &mx::NodeGraph::setNodeDef)
         .function("getNodeDef", &mx::NodeGraph::getNodeDef)
         .function("getImplementation", &mx::NodeGraph::getImplementation)
-        BIND_MEMBER_FUNC("getDeclaration", mx::NodeGraph, getDeclaration, 0, 1, stRef)
         .function("addInterfaceName", &mx::NodeGraph::addInterfaceName)
         .function("removeInterfaceName", &mx::NodeGraph::removeInterfaceName)
         .function("modifyInterfaceName", &mx::NodeGraph::modifyInterfaceName)
diff --git a/source/JsMaterialX/JsMaterialXCore/JsUtil.cpp b/source/JsMaterialX/JsMaterialXCore/JsUtil.cpp
index 9c4488e98a..e6c9f166f7 100644
--- a/source/JsMaterialX/JsMaterialXCore/JsUtil.cpp
+++ b/source/JsMaterialX/JsMaterialXCore/JsUtil.cpp
@@ -29,7 +29,7 @@ EMSCRIPTEN_BINDINGS(util)
 
     ems::function("getVersionIntegers", ems::optional_override([]() {
         std::tuple<int, int, int> version = mx::getVersionIntegers();
-        return std::array<int, 3> { std::get<0>(version), std::get<1>(version), std::get<02>(version) };
+        return std::array<int, 3> { std::get<0>(version), std::get<1>(version), std::get<2>(version) };
     }));
 
     // Emscripten expects to provide a number from JS for a cpp 'char' parameter. 
diff --git a/source/JsMaterialX/JsMaterialXCore/JsValue.cpp b/source/JsMaterialX/JsMaterialXCore/JsValue.cpp
index 42a1a6579a..d38112e6b1 100644
--- a/source/JsMaterialX/JsMaterialXCore/JsValue.cpp
+++ b/source/JsMaterialX/JsMaterialXCore/JsValue.cpp
@@ -44,7 +44,7 @@ EMSCRIPTEN_BINDINGS(value)
     ems::class_<mx::Value>("Value")
         .smart_ptr<std::shared_ptr<mx::Value>>("Value")
         .smart_ptr<std::shared_ptr<const mx::Value>>("Value")
-        .function("copy", &mx::Value::copy) 
+        .function("copy", &mx::Value::copy, ems::pure_virtual()) 
         .function("getTypeString", &mx::Value::getTypeString)
         .function("getValueString", &mx::Value::getValueString)
         .class_function("createValueFromStrings", &mx::Value::createValueFromStrings)