diff --git a/ftd/src/executor/test.rs b/ftd/src/executor/test.rs
index e87208f31c..461bd33e40 100644
--- a/ftd/src/executor/test.rs
+++ b/ftd/src/executor/test.rs
@@ -77,7 +77,7 @@ fn p(s: &str, t: &str, fix: bool, file_location: &std::path::PathBuf) {
     let doc = interpret_helper("foo", s).unwrap_or_else(|e| panic!("{:?}", e));
     let mut executor =
         ftd::executor::ExecuteDoc::from_interpreter(doc).unwrap_or_else(|e| panic!("{:?}", e));
-    for thing in ftd::interpreter::default::default_bag().keys() {
+    for thing in ftd::interpreter::default::get_default_bag().keys() {
         executor.bag.remove(thing);
     }
     let expected_json = serde_json::to_string_pretty(&executor).unwrap();
diff --git a/ftd/src/interpreter/main.rs b/ftd/src/interpreter/main.rs
index ae34cca2c1..c3664a3d1e 100644
--- a/ftd/src/interpreter/main.rs
+++ b/ftd/src/interpreter/main.rs
@@ -78,7 +78,7 @@ impl InterpreterState {
     fn new(id: String) -> InterpreterState {
         InterpreterState {
             id,
-            bag: ftd::interpreter::default::default_bag(),
+            bag: ftd::interpreter::default::get_default_bag().clone(),
             ..Default::default()
         }
     }
diff --git a/ftd/src/interpreter/test.rs b/ftd/src/interpreter/test.rs
index 1f0de8e030..85ba03bf35 100644
--- a/ftd/src/interpreter/test.rs
+++ b/ftd/src/interpreter/test.rs
@@ -73,7 +73,7 @@ pub fn interpret_helper(
 #[track_caller]
 fn p(s: &str, t: &str, fix: bool, file_location: &std::path::PathBuf) {
     let mut i = interpret_helper("foo", s).unwrap_or_else(|e| panic!("{:?}", e));
-    for thing in ftd::interpreter::default::default_bag().keys() {
+    for thing in ftd::interpreter::default::get_default_bag().keys() {
         i.data.remove(thing);
     }
     let expected_json = serde_json::to_string_pretty(&i).unwrap();
diff --git a/ftd/src/interpreter/things/default.rs b/ftd/src/interpreter/things/default.rs
index 240b4ceed0..cf8985a068 100644
--- a/ftd/src/interpreter/things/default.rs
+++ b/ftd/src/interpreter/things/default.rs
@@ -7597,7 +7597,7 @@ pub fn default_bag() -> indexmap::IndexMap<String, ftd::interpreter::Thing> {
                                     value: ftd::interpreter::Value::Record {
                                         name: ftd::interpreter::FTD_COLOR.to_string(),
                                         fields: std::iter::IntoIterator::into_iter([(
-                                            "light".to_string(),
+                                            "light".to_string().to_string(),
                                             ftd::interpreter::PropertyValue::Value {
                                                 value:
                                                 ftd::interpreter::Value::String {
@@ -7879,7 +7879,7 @@ pub fn default_bag() -> indexmap::IndexMap<String, ftd::interpreter::Thing> {
                                                                 line_number: 0,
                                                             },
                                                         ), (
-                                                            "dark".to_string(),
+                                                            "dark".to_string().to_string(),
                                                             ftd::interpreter::PropertyValue::Value {
                                                                 value: ftd::interpreter::Value::String {
                                                                     text: "#65b693".to_string()
@@ -9784,75 +9784,7 @@ pub fn default_bag() -> indexmap::IndexMap<String, ftd::interpreter::Thing> {
                 line_number: 0,
             }),
         ),
-        // mask-position
-        (
-            ftd::interpreter::FTD_MASK_MULTI_DATA.to_string(),
-            ftd::interpreter::Thing::Record(ftd::interpreter::Record {
-                name: ftd::interpreter::FTD_MASK_MULTI_DATA.to_string(),
-                fields: std::iter::IntoIterator::into_iter([
-                    ftd::interpreter::Field {
-                        name: "image".to_string(),
-                        kind: ftd::interpreter::Kind::record(ftd::interpreter::FTD_MASK_IMAGE_DATA)
-                            .into_kind_data(),
-                        mutable: false,
-                        value: None,
-                        access_modifier: Default::default(),
-                        line_number: 0,
-                    },
-                    ftd::interpreter::Field {
-                        name: "size".to_string(),
-                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_SIZE)
-                            .into_kind_data()
-                            .into_optional(),
-                        mutable: false,
-                        value: None,
-                        access_modifier: Default::default(),
-                        line_number: 0,
-                    },
-                    ftd::interpreter::Field {
-                        name: "size-x".to_string(),
-                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_SIZE)
-                            .into_kind_data()
-                            .into_optional(),
-                        mutable: false,
-                        value: None,
-                        access_modifier: Default::default(),
-                        line_number: 0,
-                    },
-                    ftd::interpreter::Field {
-                        name: "size-y".to_string(),
-                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_SIZE)
-                            .into_kind_data()
-                            .into_optional(),
-                        mutable: false,
-                        value: None,
-                        access_modifier: Default::default(),
-                        line_number: 0,
-                    },
-                    ftd::interpreter::Field {
-                        name: "repeat".to_string(),
-                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_REPEAT)
-                            .into_kind_data()
-                            .into_optional(),
-                        mutable: false,
-                        value: None,
-                        access_modifier: Default::default(),
-                        line_number: 0,
-                    },
-                    ftd::interpreter::Field {
-                        name: "position".to_string(),
-                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_POSITION)
-                            .into_kind_data()
-                            .into_optional(),
-                        mutable: false,
-                        value: None,
-                        access_modifier: Default::default(),
-                        line_number: 0,
-                    },
-                ]).collect(),
-                line_number: 0,
-            }),
-        ),
+
         (
             ftd::interpreter::FTD_MASK_REPEAT.to_string(),
             ftd::interpreter::Thing::OrType(ftd::interpreter::OrType {
@@ -10075,6 +10007,74 @@ pub fn default_bag() -> indexmap::IndexMap<String, ftd::interpreter::Thing> {
                 line_number: 0,
             }),
         ),
+        (
+            ftd::interpreter::FTD_MASK_MULTI_DATA.to_string(),
+            ftd::interpreter::Thing::Record(ftd::interpreter::Record {
+                name: ftd::interpreter::FTD_MASK_MULTI_DATA.to_string(),
+                fields: std::iter::IntoIterator::into_iter([
+                    ftd::interpreter::Field {
+                        name: "image".to_string(),
+                        kind: ftd::interpreter::Kind::record(ftd::interpreter::FTD_MASK_IMAGE_DATA)
+                            .into_kind_data(),
+                        mutable: false,
+                        value: None,
+                        access_modifier: Default::default(),
+                        line_number: 0,
+                    },
+                    ftd::interpreter::Field {
+                        name: "size".to_string(),
+                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_SIZE)
+                            .into_kind_data()
+                            .into_optional(),
+                        mutable: false,
+                        value: None,
+                        access_modifier: Default::default(),
+                        line_number: 0,
+                    },
+                    ftd::interpreter::Field {
+                        name: "size-x".to_string(),
+                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_SIZE)
+                            .into_kind_data()
+                            .into_optional(),
+                        mutable: false,
+                        value: None,
+                        access_modifier: Default::default(),
+                        line_number: 0,
+                    },
+                    ftd::interpreter::Field {
+                        name: "size-y".to_string(),
+                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_SIZE)
+                            .into_kind_data()
+                            .into_optional(),
+                        mutable: false,
+                        value: None,
+                        access_modifier: Default::default(),
+                        line_number: 0,
+                    },
+                    ftd::interpreter::Field {
+                        name: "repeat".to_string(),
+                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_REPEAT)
+                            .into_kind_data()
+                            .into_optional(),
+                        mutable: false,
+                        value: None,
+                        access_modifier: Default::default(),
+                        line_number: 0,
+                    },
+                    ftd::interpreter::Field {
+                        name: "position".to_string(),
+                        kind: ftd::interpreter::Kind::or_type(ftd::interpreter::FTD_MASK_POSITION)
+                            .into_kind_data()
+                            .into_optional(),
+                        mutable: false,
+                        value: None,
+                        access_modifier: Default::default(),
+                        line_number: 0,
+                    },
+                ]).collect(),
+                line_number: 0,
+            }),
+        ),
         (
             ftd::interpreter::FTD_MASK.to_string(),
             ftd::interpreter::Thing::OrType(ftd::interpreter::OrType {
@@ -10096,7 +10096,6 @@ pub fn default_bag() -> indexmap::IndexMap<String, ftd::interpreter::Thing> {
                         None,
                         0,
                     )),
-                    // todo: mode, position, composite, etc.
                 ],
                 line_number: 0,
             }),
@@ -10105,6 +10104,14 @@ pub fn default_bag() -> indexmap::IndexMap<String, ftd::interpreter::Thing> {
     .collect()
 }
 
+pub static DEFAULT_BAG: once_cell::sync::OnceCell<
+    indexmap::IndexMap<String, ftd::interpreter::things::Thing>,
+> = once_cell::sync::OnceCell::new();
+
+pub fn get_default_bag() -> &'static indexmap::IndexMap<String, ftd::interpreter::things::Thing> {
+    DEFAULT_BAG.get_or_init(ftd::interpreter::things::default::default_bag)
+}
+
 pub fn image_function() -> ftd::interpreter::ComponentDefinition {
     ftd::interpreter::ComponentDefinition {
         name: "ftd#image".to_string(),
diff --git a/ftd/src/js/element.rs b/ftd/src/js/element.rs
index cdccca909e..fbd3b0d535 100644
--- a/ftd/src/js/element.rs
+++ b/ftd/src/js/element.rs
@@ -147,7 +147,7 @@ pub struct CheckBox {
 
 impl CheckBox {
     pub fn from(component: &ftd::interpreter::Component) -> CheckBox {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#checkbox")
             .unwrap()
             .clone()
@@ -233,7 +233,7 @@ pub struct TextInput {
 
 impl TextInput {
     pub fn from(component: &ftd::interpreter::Component) -> TextInput {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#text-input")
             .unwrap()
             .clone()
@@ -377,7 +377,7 @@ pub struct Iframe {
 
 impl Iframe {
     pub fn from(component: &ftd::interpreter::Component) -> Iframe {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#iframe")
             .unwrap()
             .clone()
@@ -495,7 +495,7 @@ pub struct Code {
 
 impl Code {
     pub fn from(component: &ftd::interpreter::Component, _doc: &ftd::interpreter::TDoc) -> Code {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#code")
             .unwrap()
             .clone()
@@ -619,7 +619,7 @@ pub struct Image {
 
 impl Image {
     pub fn from(component: &ftd::interpreter::Component) -> Image {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#image")
             .unwrap()
             .clone()
@@ -718,7 +718,7 @@ pub struct Video {
 
 impl Video {
     pub fn from(component: &ftd::interpreter::Component) -> Video {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#video")
             .unwrap()
             .clone()
@@ -1124,7 +1124,7 @@ impl InheritedProperties {
 
 impl Text {
     pub fn from(component: &ftd::interpreter::Component) -> Text {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#text")
             .unwrap()
             .clone()
@@ -1190,7 +1190,7 @@ impl Text {
 
 impl Integer {
     pub fn from(component: &ftd::interpreter::Component) -> Integer {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#integer")
             .unwrap()
             .clone()
@@ -1255,7 +1255,7 @@ impl Integer {
 
 impl Decimal {
     pub fn from(component: &ftd::interpreter::Component) -> Decimal {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#decimal")
             .unwrap()
             .clone()
@@ -1320,7 +1320,7 @@ impl Decimal {
 
 impl Boolean {
     pub fn from(component: &ftd::interpreter::Component) -> Boolean {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#boolean")
             .unwrap()
             .clone()
@@ -1385,7 +1385,7 @@ impl Boolean {
 
 impl Document {
     pub fn from(component: &ftd::interpreter::Component) -> Document {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#document")
             .unwrap()
             .clone()
@@ -1636,7 +1636,7 @@ impl DocumentMeta {
 
 impl Column {
     pub fn from(component: &ftd::interpreter::Component) -> Column {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#column")
             .unwrap()
             .clone()
@@ -1702,7 +1702,7 @@ impl Column {
 
 impl Row {
     pub fn from(component: &ftd::interpreter::Component) -> Row {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#row")
             .unwrap()
             .clone()
@@ -1768,7 +1768,7 @@ impl Row {
 
 impl ContainerElement {
     pub fn from(component: &ftd::interpreter::Component) -> ContainerElement {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#container")
             .unwrap()
             .clone()
@@ -1836,7 +1836,7 @@ pub struct Device {
 
 impl Device {
     pub fn from(component: &ftd::interpreter::Component, device: &str) -> Device {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get(device)
             .unwrap()
             .clone()
@@ -2021,7 +2021,7 @@ pub struct Rive {
 
 impl Rive {
     pub fn from(component: &ftd::interpreter::Component) -> Rive {
-        let component_definition = ftd::interpreter::default::default_bag()
+        let component_definition = ftd::interpreter::default::get_default_bag()
             .get("ftd#rive")
             .unwrap()
             .clone()
diff --git a/ftd/src/js/mod.rs b/ftd/src/js/mod.rs
index 2fcde906df..0414e3570b 100644
--- a/ftd/src/js/mod.rs
+++ b/ftd/src/js/mod.rs
@@ -23,14 +23,14 @@ pub fn all_js_without_test(package_name: &str) -> String {
 /// This returns asts of things present in `ftd` module or `default_bag`
 pub fn default_bag_into_js_ast() -> Vec<fastn_js::Ast> {
     let mut ftd_asts = vec![];
-    let bag = ftd::interpreter::default::default_bag();
+    let bag = ftd::interpreter::default::get_default_bag();
     let doc = ftd::interpreter::TDoc {
         name: "",
         aliases: &ftd::interpreter::default::default_aliases(),
-        bag: ftd::interpreter::BagOrState::Bag(&bag),
+        bag: ftd::interpreter::BagOrState::Bag(bag),
     };
     let mut export_asts = vec![];
-    for thing in ftd::interpreter::default::default_bag().values() {
+    for thing in ftd::interpreter::default::get_default_bag().values() {
         if let ftd::interpreter::Thing::Variable(v) = thing {
             ftd_asts.push(v.to_ast(&doc, None, &mut false));
         } else if let ftd::interpreter::Thing::Function(f) = thing {
@@ -98,7 +98,7 @@ pub fn document_into_js_ast(document: ftd::interpreter::Document) -> JSAstData {
         &doc,
         &mut has_rive_components,
     )];
-    let default_thing_name = ftd::interpreter::default::default_bag()
+    let default_thing_name = ftd::interpreter::default::get_default_bag()
         .into_iter()
         .map(|v| v.0)
         .collect_vec();
@@ -106,7 +106,7 @@ pub fn document_into_js_ast(document: ftd::interpreter::Document) -> JSAstData {
     let mut export_asts = vec![];
 
     for (key, thing) in document.data.iter() {
-        if default_thing_name.contains(key) {
+        if default_thing_name.contains(&key) {
             continue;
         }
         if let ftd::interpreter::Thing::Component(c) = thing {
diff --git a/ftd/src/node/test.rs b/ftd/src/node/test.rs
index 9d657f9ae3..559327f8b5 100644
--- a/ftd/src/node/test.rs
+++ b/ftd/src/node/test.rs
@@ -76,7 +76,7 @@ fn p(s: &str, t: &str, fix: bool, file_location: &std::path::PathBuf) {
     let executor =
         ftd::executor::ExecuteDoc::from_interpreter(doc).unwrap_or_else(|e| panic!("{:?}", e));
     let mut node = ftd::node::NodeData::from_rt(executor);
-    for thing in ftd::interpreter::default::default_bag().keys() {
+    for thing in ftd::interpreter::default::get_default_bag().keys() {
         node.bag.remove(thing);
     }
     let expected_json = serde_json::to_string_pretty(&node).unwrap();