diff --git a/api/sixtyfps-node/native/lib.rs b/api/sixtyfps-node/native/lib.rs
index c07f7ee64..595331724 100644
--- a/api/sixtyfps-node/native/lib.rs
+++ b/api/sixtyfps-node/native/lib.rs
@@ -1,6 +1,6 @@
 use neon::prelude::*;
 
-struct WrappedComponentType(Option<std::rc::Rc<interpreter::MyComponentType>>);
+struct WrappedComponentType(Option<std::rc::Rc<interpreter::ComponentDescription>>);
 
 fn load(mut cx: FunctionContext) -> JsResult<JsValue> {
     let path = cx.argument::<JsString>(0)?.value();
@@ -19,7 +19,7 @@ fn load(mut cx: FunctionContext) -> JsResult<JsValue> {
     Ok(obj.as_value(&mut cx))
 }
 
-fn show(ct: std::rc::Rc<interpreter::MyComponentType>) {
+fn show(ct: std::rc::Rc<interpreter::ComponentDescription>) {
     let component = interpreter::instentiate(ct);
     // FIXME: leak (that's because we somehow need a static life time)
     gl::sixtyfps_runtime_run_component_with_gl_renderer(component.leak())
diff --git a/sixtyfps_runtime/interpreter/dynamic_component.rs b/sixtyfps_runtime/interpreter/dynamic_component.rs
new file mode 100644
index 000000000..6cc03982e
--- /dev/null
+++ b/sixtyfps_runtime/interpreter/dynamic_component.rs
@@ -0,0 +1,286 @@
+use crate::{dynamic_type, eval};
+
+use core::cell::RefCell;
+use core::ptr::NonNull;
+use corelib::abi::datastructures::{ComponentBox, ComponentRef, ComponentVTable, ItemVTable};
+use corelib::rtti::PropertyInfo;
+use corelib::{EvaluationContext, Property, SharedString};
+use object_tree::Element;
+use sixtyfps_compiler::typeregister::Type;
+use sixtyfps_compiler::*;
+use std::collections::HashMap;
+use std::rc::Rc;
+
+pub(crate) struct ItemWithinComponent {
+    offset: usize,
+    pub(crate) rtti: Rc<RuntimeTypeInfo>,
+    elem: Rc<RefCell<Element>>,
+}
+
+impl ItemWithinComponent {
+    pub(crate) unsafe fn item_from_component(&self, mem: *const u8) -> vtable::VRef<ItemVTable> {
+        vtable::VRef::from_raw(
+            NonNull::from(self.rtti.vtable),
+            NonNull::new(mem.add(self.offset) as _).unwrap(),
+        )
+    }
+}
+
+pub(crate) struct PropertiesWithinComponent {
+    pub(crate) offset: usize,
+    pub(crate) prop: Box<dyn PropertyInfo<u8, eval::Value>>,
+}
+pub struct ComponentImpl {
+    pub(crate) mem: *mut u8,
+    pub(crate) component_type: Rc<MyComponentType>,
+}
+
+#[repr(C)]
+pub struct MyComponentType {
+    ct: ComponentVTable,
+    dynamic_type: Rc<dynamic_type::TypeInfo>,
+    it: Vec<corelib::abi::datastructures::ItemTreeNode>,
+    pub(crate) items: HashMap<String, ItemWithinComponent>,
+    pub(crate) custom_properties: HashMap<String, PropertiesWithinComponent>,
+    /// the usize is the offset within `mem` to the Signal<()>
+    pub(crate) custom_signals: HashMap<String, usize>,
+    /// Keep the Rc alive
+    pub(crate) original: object_tree::Document,
+}
+
+extern "C" fn item_tree(r: ComponentRef<'_>) -> *const corelib::abi::datastructures::ItemTreeNode {
+    // FIXME! unsafe is not correct here, as the ComponentVTable might not be a MyComponentType
+    // (one can safely take a copy of the vtable and call the create function to get a box)
+    unsafe { (*(r.get_vtable() as *const ComponentVTable as *const MyComponentType)).it.as_ptr() }
+}
+
+pub(crate) struct RuntimeTypeInfo {
+    vtable: &'static ItemVTable,
+    type_info: dynamic_type::StaticTypeInfo,
+    pub(crate) properties: HashMap<&'static str, Box<dyn eval::ErasedPropertyInfo>>,
+    /// The uszie is an offset within this item to the Signal.
+    /// Ideally, we would need a vtable::VFieldOffset<ItemVTable, corelib::Signal<()>>
+    pub(crate) signals: HashMap<&'static str, usize>,
+}
+
+fn rtti_for<
+    T: 'static + Default + corelib::rtti::BuiltinItem + vtable::HasStaticVTable<ItemVTable>,
+>() -> (&'static str, Rc<RuntimeTypeInfo>) {
+    (
+        T::name(),
+        Rc::new(RuntimeTypeInfo {
+            vtable: T::static_vtable(),
+            type_info: dynamic_type::StaticTypeInfo::new::<T>(),
+            properties: T::properties()
+                .into_iter()
+                .map(|(k, v)| (k, Box::new(v) as Box<dyn eval::ErasedPropertyInfo>))
+                .collect(),
+            signals: T::signals().into_iter().map(|(k, v)| (k, v.get_byte_offset())).collect(),
+        }),
+    )
+}
+
+pub fn load(
+    source: &str,
+    path: &std::path::Path,
+) -> Result<Rc<MyComponentType>, sixtyfps_compiler::diagnostics::Diagnostics> {
+    let (syntax_node, mut diag) = parser::parse(&source);
+    diag.current_path = path.into();
+    let mut tr = typeregister::TypeRegister::builtin();
+    let tree = object_tree::Document::from_node(syntax_node, &mut diag, &mut tr);
+    if !diag.inner.is_empty() {
+        return Err(diag);
+    }
+    run_passes(&tree, &mut diag, &mut tr);
+    if !diag.inner.is_empty() {
+        return Err(diag);
+    }
+
+    let mut rtti = HashMap::new();
+    {
+        use corelib::abi::primitives::*;
+        rtti.extend(
+            [
+                rtti_for::<Image>(),
+                rtti_for::<Text>(),
+                rtti_for::<Rectangle>(),
+                rtti_for::<TouchArea>(),
+            ]
+            .iter()
+            .cloned(),
+        );
+    }
+    let rtti = Rc::new(rtti);
+
+    let mut tree_array = vec![];
+    let mut items_types = HashMap::new();
+    let mut builder = dynamic_type::TypeBuilder::new();
+
+    generator::build_array_helper(&tree.root_component, |rc_item, child_offset| {
+        let item = rc_item.borrow();
+        let rt = &rtti[&*item.base_type.as_builtin().class_name];
+        let offset = builder.add_field(rt.type_info);
+        tree_array.push(corelib::abi::datastructures::ItemTreeNode::Item {
+            offset: offset as isize,
+            vtable: rt.vtable,
+            children_index: child_offset,
+            chilren_count: item.children.len() as _,
+        });
+        items_types.insert(
+            item.id.clone(),
+            ItemWithinComponent { offset, rtti: rt.clone(), elem: rc_item.clone() },
+        );
+    });
+
+    let mut custom_properties = HashMap::new();
+    let mut custom_signals = HashMap::new();
+    for (name, decl) in &tree.root_component.root_element.borrow().property_declarations {
+        fn property_info<T: Clone + Default + 'static>(
+        ) -> (Box<dyn PropertyInfo<u8, eval::Value>>, dynamic_type::StaticTypeInfo)
+        where
+            T: std::convert::TryInto<eval::Value>,
+            eval::Value: std::convert::TryInto<T>,
+        {
+            // Fixme: using u8 in PropertyInfo<> is not sound, we would need to materialize a type for out component
+            (
+                Box::new(unsafe { vtable::FieldOffset::<u8, Property<T>>::new_from_offset(0) }),
+                dynamic_type::StaticTypeInfo::new::<Property<T>>(),
+            )
+        }
+        let (prop, type_info) = match decl.property_type {
+            Type::Float32 => property_info::<f32>(),
+            Type::Int32 => property_info::<u32>(),
+            Type::String => property_info::<SharedString>(),
+            Type::Color => property_info::<u32>(),
+            Type::Image => property_info::<SharedString>(),
+            Type::Bool => property_info::<bool>(),
+            Type::Signal => {
+                custom_signals
+                    .insert(name.clone(), builder.add_field_type::<corelib::Signal<()>>());
+                continue;
+            }
+            _ => panic!("bad type"),
+        };
+        custom_properties.insert(
+            name.clone(),
+            PropertiesWithinComponent { offset: builder.add_field(type_info), prop },
+        );
+    }
+
+    let t = ComponentVTable { create: component_create, drop: component_destroy, item_tree };
+    let t = MyComponentType {
+        ct: t,
+        dynamic_type: builder.build(),
+        it: tree_array,
+        items: items_types,
+        custom_properties,
+        custom_signals,
+        original: tree,
+    };
+
+    Ok(Rc::new(t))
+}
+
+/// Safety: Can only be called for ComponentVTable which are in `MyComponentType`
+unsafe extern "C" fn component_create(s: &ComponentVTable) -> ComponentBox {
+    // This is safe because we have an instance of ComponentVTable which is the first field of MyComponentType
+    // And the only way to get a MyComponentType is through the load function which returns a Rc
+    let component_type =
+        Rc::<MyComponentType>::from_raw(s as *const ComponentVTable as *const MyComponentType);
+    // We need to increment the ref-count, as from_raw doesn't do that.
+    std::mem::forget(component_type.clone());
+    instentiate(component_type)
+}
+
+pub fn instentiate(component_type: Rc<MyComponentType>) -> ComponentBox {
+    let instance = component_type.dynamic_type.clone().create_instance();
+    let mem = instance as *mut u8;
+
+    let ctx = Rc::new(ComponentImpl { mem, component_type: component_type.clone() });
+
+    let component_box = unsafe {
+        ComponentBox::from_raw(
+            NonNull::from(&ctx.component_type.ct).cast(),
+            NonNull::new(mem).unwrap().cast(),
+        )
+    };
+    let eval_context = EvaluationContext { component: component_box.borrow() };
+
+    for item_within_component in ctx.component_type.items.values() {
+        unsafe {
+            let item = item_within_component.item_from_component(mem);
+            let elem = item_within_component.elem.borrow();
+            for (prop, expr) in &elem.bindings {
+                let ty = elem.lookup_property(prop.as_str());
+                if ty == Type::Signal {
+                    let signal = &mut *(item_within_component
+                        .rtti
+                        .signals
+                        .get(prop.as_str())
+                        .map(|o| item.as_ptr().add(*o) as *mut u8)
+                        .or_else(|| {
+                            ctx.component_type
+                                .custom_signals
+                                .get(prop.as_str())
+                                .map(|o| mem.add(*o))
+                        })
+                        .unwrap_or_else(|| panic!("unkown signal {}", prop))
+                        as *mut corelib::Signal<()>);
+                    let expr = expr.clone();
+                    let ctx = ctx.clone();
+                    signal.set_handler(move |eval_context, _| {
+                        eval::eval_expression(&expr, &*ctx, &eval_context);
+                    })
+                } else {
+                    if let Some(prop_rtti) =
+                        item_within_component.rtti.properties.get(prop.as_str())
+                    {
+                        if expr.is_constant() {
+                            prop_rtti.set(item, eval::eval_expression(expr, &*ctx, &eval_context));
+                        } else {
+                            let expr = expr.clone();
+                            let ctx = ctx.clone();
+                            prop_rtti.set_binding(
+                                item,
+                                Box::new(move |eval_context| {
+                                    eval::eval_expression(&expr, &*ctx, eval_context)
+                                }),
+                            );
+                        }
+                    } else if let Some(PropertiesWithinComponent { offset, prop, .. }) =
+                        ctx.component_type.custom_properties.get(prop.as_str())
+                    {
+                        if expr.is_constant() {
+                            let v = eval::eval_expression(expr, &*ctx, &eval_context);
+                            prop.set(&*mem.add(*offset), v).unwrap();
+                        } else {
+                            let expr = expr.clone();
+                            let ctx = ctx.clone();
+                            prop.set_binding(
+                                &*mem.add(*offset),
+                                Box::new(move |eval_context| {
+                                    eval::eval_expression(&expr, &*ctx, eval_context)
+                                }),
+                            );
+                        }
+                    } else {
+                        panic!("unkown property {}", prop);
+                    }
+                }
+            }
+        }
+    }
+
+    // The destructor of ComponentBox will take care of reducing the count
+    Rc::into_raw(component_type);
+    component_box
+}
+
+unsafe extern "C" fn component_destroy(component_ref: vtable::VRefMut<ComponentVTable>) {
+    // Take the reference count that the instentiate function leaked
+    let _vtable_rc = Rc::<MyComponentType>::from_raw(component_ref.get_vtable()
+        as *const ComponentVTable
+        as *const MyComponentType);
+
+    dynamic_type::TypeInfo::delete_instance(component_ref.as_ptr() as *mut dynamic_type::Instance);
+}
diff --git a/sixtyfps_runtime/interpreter/eval.rs b/sixtyfps_runtime/interpreter/eval.rs
index 48b9cafba..e276f779c 100644
--- a/sixtyfps_runtime/interpreter/eval.rs
+++ b/sixtyfps_runtime/interpreter/eval.rs
@@ -6,7 +6,7 @@ use std::convert::{TryFrom, TryInto};
 pub trait ErasedPropertyInfo {
     fn get(&self, item: ItemRef, context: &EvaluationContext) -> Value;
     fn set(&self, item: ItemRef, value: Value);
-    fn set_binding(&self, item: ItemRef, binding: Box<dyn Fn(&crate::EvaluationContext) -> Value>);
+    fn set_binding(&self, item: ItemRef, binding: Box<dyn Fn(&EvaluationContext) -> Value>);
 }
 
 impl<Item: vtable::HasStaticVTable<corelib::abi::datastructures::ItemVTable>> ErasedPropertyInfo
diff --git a/sixtyfps_runtime/interpreter/lib.rs b/sixtyfps_runtime/interpreter/lib.rs
index 04f09ddbc..e23450cf1 100644
--- a/sixtyfps_runtime/interpreter/lib.rs
+++ b/sixtyfps_runtime/interpreter/lib.rs
@@ -1,287 +1,26 @@
-use core::cell::RefCell;
-use core::ptr::NonNull;
-use corelib::abi::datastructures::{ComponentBox, ComponentRef, ComponentVTable, ItemVTable};
-use corelib::rtti::PropertyInfo;
-use corelib::{EvaluationContext, Property, SharedString};
-use object_tree::Element;
-use sixtyfps_compiler::typeregister::Type;
-use sixtyfps_compiler::*;
-use std::collections::HashMap;
-use std::rc::Rc;
-
+mod dynamic_component;
 mod dynamic_type;
 mod eval;
 
-struct ItemWithinComponent {
-    offset: usize,
-    rtti: Rc<RuntimeTypeInfo>,
-    elem: Rc<RefCell<Element>>,
-}
+pub(crate) use dynamic_component::ComponentImpl;
+pub use dynamic_component::MyComponentType as ComponentDescription;
+pub use dynamic_component::{instentiate, load};
 
-impl ItemWithinComponent {
-    unsafe fn item_from_component(&self, mem: *const u8) -> vtable::VRef<ItemVTable> {
-        vtable::VRef::from_raw(
-            NonNull::from(self.rtti.vtable),
-            NonNull::new(mem.add(self.offset) as _).unwrap(),
-        )
-    }
-}
-
-struct PropertiesWithinComponent {
-    offset: usize,
-    prop: Box<dyn PropertyInfo<u8, eval::Value>>,
-}
-pub struct ComponentImpl {
-    mem: *mut u8,
-    component_type: Rc<MyComponentType>,
-}
-
-#[repr(C)]
-pub struct MyComponentType {
-    ct: ComponentVTable,
-    dynamic_type: Rc<dynamic_type::TypeInfo>,
-    it: Vec<corelib::abi::datastructures::ItemTreeNode>,
-    items: HashMap<String, ItemWithinComponent>,
-    custom_properties: HashMap<String, PropertiesWithinComponent>,
-    /// the usize is the offset within `mem` to the Signal<()>
-    custom_signals: HashMap<String, usize>,
-    /// Keep the Rc alive
-    original: object_tree::Document,
-}
-
-extern "C" fn item_tree(r: ComponentRef<'_>) -> *const corelib::abi::datastructures::ItemTreeNode {
-    // FIXME! unsafe is not correct here, as the ComponentVTable might not be a MyComponentType
-    // (one can safely take a copy of the vtable and call the create function to get a box)
-    unsafe { (*(r.get_vtable() as *const ComponentVTable as *const MyComponentType)).it.as_ptr() }
-}
-
-struct RuntimeTypeInfo {
-    vtable: &'static ItemVTable,
-    type_info: dynamic_type::StaticTypeInfo,
-    properties: HashMap<&'static str, Box<dyn eval::ErasedPropertyInfo>>,
-    /// The uszie is an offset within this item to the Signal.
-    /// Ideally, we would need a vtable::VFieldOffset<ItemVTable, corelib::Signal<()>>
-    signals: HashMap<&'static str, usize>,
-}
-
-fn rtti_for<
-    T: 'static + Default + corelib::rtti::BuiltinItem + vtable::HasStaticVTable<ItemVTable>,
->() -> (&'static str, Rc<RuntimeTypeInfo>) {
-    (
-        T::name(),
-        Rc::new(RuntimeTypeInfo {
-            vtable: T::static_vtable(),
-            type_info: dynamic_type::StaticTypeInfo::new::<T>(),
-            properties: T::properties()
-                .into_iter()
-                .map(|(k, v)| (k, Box::new(v) as Box<dyn eval::ErasedPropertyInfo>))
-                .collect(),
-            signals: T::signals().into_iter().map(|(k, v)| (k, v.get_byte_offset())).collect(),
-        }),
-    )
-}
-
-pub fn load(
-    source: &str,
-    path: &std::path::Path,
-) -> Result<Rc<MyComponentType>, sixtyfps_compiler::diagnostics::Diagnostics> {
-    let (syntax_node, mut diag) = parser::parse(&source);
-    diag.current_path = path.into();
-    let mut tr = typeregister::TypeRegister::builtin();
-    let tree = object_tree::Document::from_node(syntax_node, &mut diag, &mut tr);
-    if !diag.inner.is_empty() {
-        return Err(diag);
-    }
-    run_passes(&tree, &mut diag, &mut tr);
-    if !diag.inner.is_empty() {
-        return Err(diag);
+impl ComponentDescription {
+    /// The name of this Component as written in the .60 file
+    pub fn id(&self) -> &str {
+        self.original.root_component.id.as_str()
     }
 
-    let mut rtti = HashMap::new();
-    {
-        use corelib::abi::primitives::*;
-        rtti.extend(
-            [
-                rtti_for::<Image>(),
-                rtti_for::<Text>(),
-                rtti_for::<Rectangle>(),
-                rtti_for::<TouchArea>(),
-            ]
+    /// List of publicly declared properties or signal
+    pub fn properties(&self) -> Vec<(String, sixtyfps_compiler::typeregister::Type)> {
+        self.original
+            .root_component
+            .root_element
+            .borrow()
+            .property_declarations
             .iter()
-            .cloned(),
-        );
+            .map(|(s, v)| (s.clone(), v.property_type.clone()))
+            .collect()
     }
-    let rtti = Rc::new(rtti);
-
-    let mut tree_array = vec![];
-    let mut items_types = HashMap::new();
-    let mut builder = dynamic_type::TypeBuilder::new();
-
-    generator::build_array_helper(&tree.root_component, |rc_item, child_offset| {
-        let item = rc_item.borrow();
-        let rt = &rtti[&*item.base_type.as_builtin().class_name];
-        let offset = builder.add_field(rt.type_info);
-        tree_array.push(corelib::abi::datastructures::ItemTreeNode::Item {
-            offset: offset as isize,
-            vtable: rt.vtable,
-            children_index: child_offset,
-            chilren_count: item.children.len() as _,
-        });
-        items_types.insert(
-            item.id.clone(),
-            ItemWithinComponent { offset, rtti: rt.clone(), elem: rc_item.clone() },
-        );
-    });
-
-    let mut custom_properties = HashMap::new();
-    let mut custom_signals = HashMap::new();
-    for (name, decl) in &tree.root_component.root_element.borrow().property_declarations {
-        fn property_info<T: Clone + Default + 'static>(
-        ) -> (Box<dyn PropertyInfo<u8, eval::Value>>, dynamic_type::StaticTypeInfo)
-        where
-            T: std::convert::TryInto<eval::Value>,
-            eval::Value: std::convert::TryInto<T>,
-        {
-            // Fixme: using u8 in PropertyInfo<> is not sound, we would need to materialize a type for out component
-            (
-                Box::new(unsafe { vtable::FieldOffset::<u8, Property<T>>::new_from_offset(0) }),
-                dynamic_type::StaticTypeInfo::new::<Property<T>>(),
-            )
-        }
-        let (prop, type_info) = match decl.property_type {
-            Type::Float32 => property_info::<f32>(),
-            Type::Int32 => property_info::<u32>(),
-            Type::String => property_info::<SharedString>(),
-            Type::Color => property_info::<u32>(),
-            Type::Image => property_info::<SharedString>(),
-            Type::Bool => property_info::<bool>(),
-            Type::Signal => {
-                custom_signals
-                    .insert(name.clone(), builder.add_field_type::<corelib::Signal<()>>());
-                continue;
-            }
-            _ => panic!("bad type"),
-        };
-        custom_properties.insert(
-            name.clone(),
-            PropertiesWithinComponent { offset: builder.add_field(type_info), prop },
-        );
-    }
-
-    let t = ComponentVTable { create: component_create, drop: component_destroy, item_tree };
-    let t = MyComponentType {
-        ct: t,
-        dynamic_type: builder.build(),
-        it: tree_array,
-        items: items_types,
-        custom_properties,
-        custom_signals,
-        original: tree,
-    };
-
-    Ok(Rc::new(t))
-}
-
-/// Safety: Can only be called for ComponentVTable which are in `MyComponentType`
-unsafe extern "C" fn component_create(s: &ComponentVTable) -> ComponentBox {
-    // This is safe because we have an instance of ComponentVTable which is the first field of MyComponentType
-    // And the only way to get a MyComponentType is through the load function which returns a Rc
-    let component_type =
-        Rc::<MyComponentType>::from_raw(s as *const ComponentVTable as *const MyComponentType);
-    // We need to increment the ref-count, as from_raw doesn't do that.
-    std::mem::forget(component_type.clone());
-    instentiate(component_type)
-}
-
-pub fn instentiate(component_type: Rc<MyComponentType>) -> ComponentBox {
-    let instance = component_type.dynamic_type.clone().create_instance();
-    let mem = instance as *mut u8;
-
-    let ctx = Rc::new(ComponentImpl { mem, component_type: component_type.clone() });
-
-    let component_box = unsafe {
-        ComponentBox::from_raw(
-            NonNull::from(&ctx.component_type.ct).cast(),
-            NonNull::new(mem).unwrap().cast(),
-        )
-    };
-    let eval_context = EvaluationContext { component: component_box.borrow() };
-
-    for item_within_component in ctx.component_type.items.values() {
-        unsafe {
-            let item = item_within_component.item_from_component(mem);
-            let elem = item_within_component.elem.borrow();
-            for (prop, expr) in &elem.bindings {
-                let ty = elem.lookup_property(prop.as_str());
-                if ty == Type::Signal {
-                    let signal = &mut *(item_within_component
-                        .rtti
-                        .signals
-                        .get(prop.as_str())
-                        .map(|o| item.as_ptr().add(*o) as *mut u8)
-                        .or_else(|| {
-                            ctx.component_type
-                                .custom_signals
-                                .get(prop.as_str())
-                                .map(|o| mem.add(*o))
-                        })
-                        .unwrap_or_else(|| panic!("unkown signal {}", prop))
-                        as *mut corelib::Signal<()>);
-                    let expr = expr.clone();
-                    let ctx = ctx.clone();
-                    signal.set_handler(move |eval_context, _| {
-                        eval::eval_expression(&expr, &*ctx, &eval_context);
-                    })
-                } else {
-                    if let Some(prop_rtti) =
-                        item_within_component.rtti.properties.get(prop.as_str())
-                    {
-                        if expr.is_constant() {
-                            prop_rtti.set(item, eval::eval_expression(expr, &*ctx, &eval_context));
-                        } else {
-                            let expr = expr.clone();
-                            let ctx = ctx.clone();
-                            prop_rtti.set_binding(
-                                item,
-                                Box::new(move |eval_context| {
-                                    eval::eval_expression(&expr, &*ctx, eval_context)
-                                }),
-                            );
-                        }
-                    } else if let Some(PropertiesWithinComponent { offset, prop, .. }) =
-                        ctx.component_type.custom_properties.get(prop.as_str())
-                    {
-                        if expr.is_constant() {
-                            let v = eval::eval_expression(expr, &*ctx, &eval_context);
-                            prop.set(&*mem.add(*offset), v).unwrap();
-                        } else {
-                            let expr = expr.clone();
-                            let ctx = ctx.clone();
-                            prop.set_binding(
-                                &*mem.add(*offset),
-                                Box::new(move |eval_context| {
-                                    eval::eval_expression(&expr, &*ctx, eval_context)
-                                }),
-                            );
-                        }
-                    } else {
-                        panic!("unkown property {}", prop);
-                    }
-                }
-            }
-        }
-    }
-
-    // The destructor of ComponentBox will take care of reducing the count
-    Rc::into_raw(component_type);
-    component_box
-}
-
-unsafe extern "C" fn component_destroy(component_ref: vtable::VRefMut<ComponentVTable>) {
-    // Take the reference count that the instentiate function leaked
-    let _vtable_rc = Rc::<MyComponentType>::from_raw(component_ref.get_vtable()
-        as *const ComponentVTable
-        as *const MyComponentType);
-
-    dynamic_type::TypeInfo::delete_instance(component_ref.as_ptr() as *mut dynamic_type::Instance);
 }