perf(styled-components): Check before allocating (#399)

Author: kdy1

Cargo.lock

@@ -1,5 +1,11 @@
 # @swc/plugin-styled-components
 
+## 6.5.0
+
+### Minor Changes
+
+- 04c2925: Improve performance
+
 ## 6.4.0
 
 ### Minor Changes

packages/styled-components/CHANGELOG.md

@@ -28,6 +28,12 @@ Then update your `.swcrc` file like below:
 
 # @swc/plugin-styled-components
 
+## 6.5.0
+
+### Minor Changes
+
+- 04c2925: Improve performance
+
 ## 6.4.0
 
 ### Minor Changes

packages/styled-components/README.md

@@ -1,6 +1,6 @@
 {
   "name": "@swc/plugin-styled-components",
-  "version": "6.4.0",
+  "version": "6.5.0",
   "description": "SWC plugin for styled-components",
   "main": "swc_plugin_styled_components.wasm",
   "scripts": {

packages/styled-components/package.json

@@ -12,7 +12,7 @@ homepage     = { workspace = true }
 license      = { workspace = true }
 repository   = { workspace = true }
 rust-version = { workspace = true }
-version      = "0.100.0"
+version      = "0.100.1"
 
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

packages/styled-components/transform/Cargo.toml

@@ -377,6 +377,10 @@ impl VisitMut for TranspileCssProp<'_> {
             );
         }
 
+        if !self.state.need_work() {
+            return;
+        }
+
         let mut serialized_body: Vec<ModuleItem> = vec![];
         let body = std::mem::take(&mut n.body);
         for item in body {