diff --git a/.cargo/config.toml b/.cargo/config.toml
index 5e9878a..1bd9339 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -3,3 +3,6 @@
 # Alias to build actual plugin binary for the specified target.
 build-wasip1 = "build --target wasm32-wasip1"
 build-wasm32 = "build --target wasm32-unknown-unknown"
+
+[target.'cfg(target_arch = "wasm32")']
+rustflags = ["--cfg=swc_ast_unknown"]
diff --git a/Cargo.toml b/Cargo.toml
index 777b4f1..614bfc7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,3 +52,6 @@ testing = "18"
 # .cargo/config defines few alias to build plugin.
 # cargo build-wasip1 generates wasm-wasi32 binary
 # cargo build-wasm32 generates wasm32-unknown-unknown binary.
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
diff --git a/src/injector.rs b/src/injector.rs
index 2df4ddf..51bfc1d 100644
--- a/src/injector.rs
+++ b/src/injector.rs
@@ -215,6 +215,8 @@ impl VisitMut for Injector {
 
             // import * as styles from "./Component.module.css"
             ImportSpecifier::Namespace(namespace) => self.new_import(&namespace.local.sym, src),
+            #[cfg(swc_ast_unknown)]
+            _ => {}
         });
 
         // import styles from "./Component.module.css";