swc-project · quininer · Nov 5, 2025 · Nov 5, 2025
diff --git a/.cargo/config.toml b/.cargo/config.toml
@@ -27,3 +27,8 @@ rustflags = ["-C", "target-feature=-crt-static", "-C", "link-arg=-lgcc"]
 
 [target.armv7-unknown-linux-gnueabihf]
 linker = "arm-linux-gnueabihf-gcc"
+
+[target.'cfg(target_arch = "wasm32")']
+rustflags = [
+  "--cfg=swc_ast_unknown"
+]
diff --git a/packages/emotion/transform/Cargo.toml b/packages/emotion/transform/Cargo.toml
@@ -12,6 +12,9 @@ version      = "0.105.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 base64              = { workspace = true }
 byteorder           = { workspace = true }

diff --git a/packages/emotion/transform/src/lib.rs b/packages/emotion/transform/src/lib.rs
@@ -291,6 +291,8 @@ impl<'a, C: Comments> EmotionTransformer<'a, C> {
                                         ModuleExportName::Str(v) => {
                                             v.value.as_str() == Some(exported.name.as_str())
                                         }
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unknown node")
                                     },
                                     _ => named.local.as_ref() == exported.name,
                                 };
@@ -312,6 +314,8 @@ impl<'a, C: Comments> EmotionTransformer<'a, C> {
                             self.import_packages
                                 .insert(namespace.local.to_id(), PackageMeta::Namespace(c.clone()));
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unknown node")
                     }
                 }
             }

diff --git a/packages/formatjs/transform/Cargo.toml b/packages/formatjs/transform/Cargo.toml
@@ -10,6 +10,9 @@ name = "swc_formatjs_transform"
 repository = { workspace = true }
 version = "12.0.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 custom_transform = []
 

diff --git a/packages/formatjs/transform/src/lib.rs b/packages/formatjs/transform/src/lib.rs
@@ -89,6 +89,8 @@ fn get_message_descriptor_key_from_jsx(name: &JSXAttrName) -> &str {
     match name {
         JSXAttrName::Ident(name)
         | JSXAttrName::JSXNamespacedName(JSXNamespacedName { name, .. }) => &name.sym,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 
     // NOTE: Do not support evaluatePath()

diff --git a/packages/prefresh/transform/Cargo.toml b/packages/prefresh/transform/Cargo.toml
@@ -12,6 +12,9 @@ repository   = { workspace = true }
 rust-version = { workspace = true }
 version      = "0.32.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 serde          = { workspace = true, features = ["derive"] }
 swc_atoms      = { workspace = true }

diff --git a/packages/prefresh/transform/src/lib.rs b/packages/prefresh/transform/src/lib.rs
@@ -105,6 +105,8 @@ impl VisitMut for PrefreshPlugin {
                         let name = match imported {
                             ModuleExportName::Ident(ident) => &ident.sym,
                             ModuleExportName::Str(s) => &s.value.to_atom_lossy(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unknown node")
                         };
                         if name == "createContext" {
                             self.local.insert(spec.local.to_id());
@@ -116,6 +118,8 @@ impl VisitMut for PrefreshPlugin {
                 ImportSpecifier::Namespace(spec) => {
                     self.lib_local.insert(spec.local.to_id());
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unknown node")
             }
         }
     }

diff --git a/packages/styled-components/transform/Cargo.toml b/packages/styled-components/transform/Cargo.toml
@@ -17,6 +17,9 @@ version      = "0.129.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 Inflector      = { workspace = true }
 once_cell      = { workspace = true }

diff --git a/packages/styled-components/transform/src/utils/analyzer.rs b/packages/styled-components/transform/src/utils/analyzer.rs
@@ -80,6 +80,8 @@ impl Visit for Analyzer<'_> {
                                 ModuleExportName::Str(v) => {
                                     v.value.as_str().expect("non-utf8 export name")
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unknown node")
                             })
                             .unwrap_or(&*s.local.sym);
                         self.state
@@ -92,6 +94,8 @@ impl Visit for Analyzer<'_> {
                     ImportSpecifier::Namespace(s) => {
                         self.state.imported_local_ns = Some(s.local.to_id());
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unknown node")
                 }
             }
         }

diff --git a/packages/styled-components/transform/src/utils/mod.rs b/packages/styled-components/transform/src/utils/mod.rs
@@ -16,6 +16,8 @@ pub(crate) fn get_prop_key_as_expr(p: &Prop) -> Cow<Expr> {
         Prop::Getter(p) => prop_name_to_expr(&p.key),
         Prop::Setter(p) => prop_name_to_expr(&p.key),
         Prop::Method(p) => prop_name_to_expr(&p.key),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 
@@ -26,6 +28,8 @@ pub(crate) fn prop_name_to_expr(p: &PropName) -> Cow<Expr> {
         PropName::Num(p) => Cow::Owned(Expr::Lit(Lit::Num(p.clone()))),
         PropName::BigInt(p) => Cow::Owned(Expr::Lit(Lit::BigInt(p.clone()))),
         PropName::Computed(e) => Cow::Borrowed(&e.expr),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 
@@ -37,6 +41,8 @@ pub(crate) fn get_prop_name(p: &Prop) -> Option<&PropName> {
         Prop::Getter(p) => Some(&p.key),
         Prop::Setter(p) => Some(&p.key),
         Prop::Method(p) => Some(&p.key),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 
@@ -48,6 +54,8 @@ pub(crate) fn get_prop_name2(p: &Prop) -> PropName {
         Prop::Getter(p) => p.key.clone(),
         Prop::Setter(p) => p.key.clone(),
         Prop::Method(p) => p.key.clone(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 

diff --git a/...tyled-components/transform/src/visitors/transpile_css_prop/top_level_binding_collector.rs b/...tyled-components/transform/src/visitors/transpile_css_prop/top_level_binding_collector.rs
@@ -37,6 +37,8 @@ impl Visit for TopLevelBindingCollector {
                         ObjectPatProp::Assign(a) => self.add(&a.key.to_id()),
                         ObjectPatProp::KeyValue(k) => k.value.visit_with(self),
                         ObjectPatProp::Rest(_) => {}
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unknown node")
                     }
                 }
             }

diff --git a/packages/styled-components/transform/src/visitors/transpile_css_prop/transpile.rs b/packages/styled-components/transform/src/visitors/transpile_css_prop/transpile.rs
@@ -323,6 +323,8 @@ impl VisitMut for TranspileCssProp<'_> {
                     }
                 }
                 JSXAttrOrSpread::SpreadElement(_) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unknown node")
             }
         }
 
@@ -337,6 +339,8 @@ impl VisitMut for TranspileCssProp<'_> {
                     }
                 }
                 JSXAttrOrSpread::SpreadElement(_) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unknown node")
             }
             true
         });
@@ -418,6 +422,8 @@ fn get_name_expr(name: &JSXElementName) -> Box<Expr> {
                 obj: get_name_expr_jsx_object(&n.obj),
                 prop: MemberProp::Ident(n.prop.clone()),
             })),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unknown node")
         }
     }
     match name {
@@ -430,6 +436,8 @@ fn get_name_expr(name: &JSXElementName) -> Box<Expr> {
         JSXElementName::JSXNamespacedName(..) => {
             unimplemented!("get_name_expr for JSXNamespacedName")
         }
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 
@@ -542,6 +550,8 @@ impl PropertyReducer<'_> {
                     acc.push(property);
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unknown node")
         }
 
         acc
@@ -563,6 +573,8 @@ fn set_value_of_prop(prop: &mut Prop, value: Box<Expr>) {
         Prop::Getter(_p) => todo!(),
         Prop::Setter(_p) => todo!(),
         Prop::Method(_p) => todo!(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 
@@ -574,6 +586,8 @@ fn take_prop_value(prop: &mut Prop) -> Box<Expr> {
         Prop::Getter(_p) => todo!(),
         Prop::Setter(_p) => todo!(),
         Prop::Method(_p) => todo!(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 
@@ -627,6 +641,8 @@ fn get_name_of_jsx_obj(el: &JSXObject) -> Atom {
         JSXObject::JSXMemberExpr(e) => {
             format!("{}{}", get_name_of_jsx_obj(&e.obj), e.prop.sym).into()
         }
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
 

diff --git a/packages/swc-magic/transform/Cargo.toml b/packages/swc-magic/transform/Cargo.toml
@@ -12,6 +12,8 @@ repository   = { workspace = true }
 rust-version = { workspace = true }
 version      = "0.49.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
 
 [dependencies]
 rustc-hash     = { workspace = true }

diff --git a/packages/swc-magic/transform/src/import_analyzer.rs b/packages/swc-magic/transform/src/import_analyzer.rs
@@ -75,6 +75,8 @@ impl Visit for Analyzer<'_> {
                         .insert(s.local.to_id(), import.src.value.clone());
                     continue;
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unknown node")
             };
 
             self.data
@@ -88,5 +90,7 @@ fn orig_name(n: &ModuleExportName) -> Atom {
     match n {
         ModuleExportName::Ident(v) => v.sym.clone(),
         ModuleExportName::Str(v) => v.value.as_atom().expect("non-utf8 export name").clone(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
diff --git a/packages/swc-sdk/transform/Cargo.toml b/packages/swc-sdk/transform/Cargo.toml
@@ -12,6 +12,8 @@ repository   = { workspace = true }
 rust-version = { workspace = true }
 version      = "0.5.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
 
 [dependencies]
 default-from-serde = { workspace = true }

diff --git a/packages/swc-sdk/transform/src/import_analyzer.rs b/packages/swc-sdk/transform/src/import_analyzer.rs
@@ -92,6 +92,8 @@ impl Visit for Analyzer<'_> {
                         .insert(s.local.to_id(), (import.src.value.clone(), s.local.span));
                     continue;
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unknown node")
             };
 
             self.data
@@ -105,5 +107,7 @@ fn orig_name(n: &ModuleExportName) -> Atom {
     match n {
         ModuleExportName::Ident(v) => v.sym.clone(),
         ModuleExportName::Str(v) => v.value.to_atom_lossy().into_owned(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unknown node")
     }
 }
diff --git a/packages/transform-imports/transform/Cargo.toml b/packages/transform-imports/transform/Cargo.toml
@@ -15,6 +15,9 @@ version      = "0.101.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 convert_case   = { workspace = true }
 handlebars     = { workspace = true }

diff --git a/packages/transform-imports/transform/src/lib.rs b/packages/transform-imports/transform/src/lib.rs
@@ -179,6 +179,8 @@ impl Rewriter<'_> {
                     let name_str = match name_str {
                         ModuleExportName::Ident(x) => Cow::Borrowed(x.as_ref()),
                         ModuleExportName::Str(x) => x.value.to_string_lossy(),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unknown node")
                     };
 
                     let new_path = self.new_path(Some(name_str.as_ref()));
@@ -213,6 +215,8 @@ impl Rewriter<'_> {
                     let name_str = match &ns_spec.name {
                         ModuleExportName::Ident(x) => Cow::Borrowed(x.as_ref()),
                         ModuleExportName::Str(x) => x.value.to_string_lossy(),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unknown node")
                     };
                     let new_path = self.new_path(Some(name_str.as_ref()));
                     let specifier = ExportSpecifier::Namespace(ns_spec.clone());
@@ -255,6 +259,8 @@ impl Rewriter<'_> {
                         .map(|x| match x {
                             ModuleExportName::Ident(x) => Cow::Borrowed(x.as_ref()),
                             ModuleExportName::Str(x) => x.value.to_string_lossy(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unknown node")
                         })
                         .unwrap_or_else(|| Cow::Borrowed(named_spec.local.as_ref()));