diff --git a/.changeset/cuddly-showers-shine.md b/.changeset/cuddly-showers-shine.md
new file mode 100644
index 00000000..fd7ce8a5
--- /dev/null
+++ b/.changeset/cuddly-showers-shine.md
@@ -0,0 +1,5 @@
+---
+"@devup-ui/wasm": patch
+---
+
+Support void 0
diff --git a/libs/extractor/src/extractor/extract_style_from_expression.rs b/libs/extractor/src/extractor/extract_style_from_expression.rs
index 510dea1c..7a4498bc 100644
--- a/libs/extractor/src/extractor/extract_style_from_expression.rs
+++ b/libs/extractor/src/extractor/extract_style_from_expression.rs
@@ -22,7 +22,7 @@ use oxc_ast::{
     AstBuilder,
     ast::{
         BinaryOperator, Expression, LogicalOperator, ObjectPropertyKind, PropertyKey,
-        TemplateElementValue,
+        TemplateElementValue, UnaryOperator,
     },
 };
 use oxc_span::SPAN;
@@ -37,6 +37,7 @@ pub fn extract_style_from_expression<'a>(
     selector: &Option<StyleSelector>,
 ) -> ExtractResult<'a> {
     let mut typo = false;
+    println!("expression: {:?}", expression);
 
     if name.is_none() && selector.is_none() {
         let mut style_order = None;
@@ -287,8 +288,22 @@ pub fn extract_style_from_expression<'a>(
         }
     } else {
         match expression {
-            Expression::UnaryExpression(_)
-            | Expression::BinaryExpression(_)
+            Expression::UnaryExpression(un) => ExtractResult {
+                styles: if un.operator == UnaryOperator::Void {
+                    vec![]
+                } else {
+                    vec![ExtractStyleProp::Static(ExtractStyleValue::Dynamic(
+                        ExtractDynamicStyle::new(
+                            name.unwrap(),
+                            level,
+                            &expression_to_code(expression),
+                            selector.clone(),
+                        ),
+                    ))]
+                },
+                ..ExtractResult::default()
+            },
+            Expression::BinaryExpression(_)
             | Expression::StaticMemberExpression(_)
             | Expression::CallExpression(_) => ExtractResult {
                 styles: vec![ExtractStyleProp::Static(ExtractStyleValue::Dynamic(
diff --git a/libs/extractor/src/lib.rs b/libs/extractor/src/lib.rs
index 66ac074f..6ea16db1 100644
--- a/libs/extractor/src/lib.rs
+++ b/libs/extractor/src/lib.rs
@@ -1513,6 +1513,23 @@ import clsx from 'clsx'
                 "test.tsx",
                 r#"import { Box } from "@devup-ui/core";
 <Box margin={a === b ? undefined : null} />;
+"#,
+                ExtractOption {
+                    package: "@devup-ui/core".to_string(),
+                    css_dir: "@devup-ui/core".to_string(),
+                    single_css: true,
+                    import_main_css: false
+                }
+            )
+            .unwrap()
+        ));
+
+        reset_class_map();
+        assert_debug_snapshot!(ToBTreeSet::from(
+            extract(
+                "test.tsx",
+                r#"import { Box } from "@devup-ui/core";
+<Box _hover={b ? void 0 : { bg: "blue" }} />;
 "#,
                 ExtractOption {
                     package: "@devup-ui/core".to_string(),
diff --git a/libs/extractor/src/snapshots/extractor__tests__extract_conditional_style_props-11.snap b/libs/extractor/src/snapshots/extractor__tests__extract_conditional_style_props-11.snap
new file mode 100644
index 00000000..8fff99cf
--- /dev/null
+++ b/libs/extractor/src/snapshots/extractor__tests__extract_conditional_style_props-11.snap
@@ -0,0 +1,22 @@
+---
+source: libs/extractor/src/lib.rs
+expression: "ToBTreeSet::from(extract(\"test.tsx\",\nr#\"import { Box } from \"@devup-ui/core\";\n<Box _hover={b ? void 0 : { bg: \"blue\" }} />;\n\"#,\nExtractOption\n{\n    package: \"@devup-ui/core\".to_string(), css_dir:\n    \"@devup-ui/core\".to_string(), single_css: true, import_main_css: false\n}).unwrap())"
+---
+ToBTreeSet {
+    styles: {
+        Static(
+            ExtractStaticStyle {
+                property: "background",
+                value: "blue",
+                level: 0,
+                selector: Some(
+                    Selector(
+                        "&:hover",
+                    ),
+                ),
+                style_order: None,
+            },
+        ),
+    },
+    code: "import \"@devup-ui/core/devup-ui.css\";\n<div className={b ? \"\" : \"a\"} />;\n",
+}