diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 8fa57368b670..928cdc6bada3 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -354,6 +354,11 @@ jobs:
         run: |
           ./scripts/github/run-cargo-hack.sh ${{ matrix.settings.crate }}
 
+      - name: Check unknown variant with transforms
+        if: matrix.settings.crate == 'swc_ecma_transforms'
+        run: |
+          env RUSTFLAGS="--cfg swc_ast_unknown" cargo check -p ${{ matrix.settings.crate }} --features typescript,react,proposal,optimization,module,compat
+
   node-test:
     name: Test node bindings - ${{ matrix.os }}
     if: >-
diff --git a/crates/ast_node/src/lib.rs b/crates/ast_node/src/lib.rs
index bc58300dc4ea..ade3332a9eba 100644
--- a/crates/ast_node/src/lib.rs
+++ b/crates/ast_node/src/lib.rs
@@ -158,29 +158,34 @@ pub fn ast_node(
     let mut item = TokenStream::new();
     match input.data {
         Data::Enum(..) => {
-            struct EnumArgs {
-                clone: bool,
-            }
-            impl parse::Parse for EnumArgs {
-                fn parse(i: parse::ParseStream<'_>) -> syn::Result<Self> {
-                    let name: Ident = i.parse()?;
-                    if name != "no_clone" {
-                        return Err(i.error("unknown attribute"));
-                    }
-                    Ok(EnumArgs { clone: false })
+            use syn::parse::Parser;
+
+            let attrs = <syn::punctuated::Punctuated<syn::Ident, syn::Token![,]>>::parse_terminated
+                .parse(args)
+                .expect("failed to parse #[ast_node]");
+
+            let mut has_no_clone = false;
+            let mut has_no_unknown = false;
+            for attr in &attrs {
+                if attr == "no_clone" {
+                    has_no_clone = true;
+                } else if attr == "no_unknown" {
+                    has_no_unknown = true;
+                } else {
+                    panic!("unknown attribute: {attr:?}")
                 }
             }
-            let args = if args.is_empty() {
-                EnumArgs { clone: true }
-            } else {
-                parse(args).expect("failed to parse args of #[ast_node]")
-            };
 
-            let clone = if args.clone {
+            let clone = if !has_no_clone {
                 Some(quote!(#[derive(Clone)]))
             } else {
                 None
             };
+            let non_exhaustive = if !has_no_unknown {
+                Some(quote!(#[cfg_attr(swc_ast_unknown, non_exhaustive)]))
+            } else {
+                None
+            };
 
             item.extend(quote!(
                 #[allow(clippy::derive_partial_eq_without_eq)]
@@ -198,6 +203,7 @@ pub fn ast_node(
                     ::swc_common::DeserializeEnum,
                 )]
                 #clone
+                #non_exhaustive
                 #[cfg_attr(
                     feature = "rkyv-impl",
                     derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize)
diff --git a/crates/jsdoc/src/ast.rs b/crates/jsdoc/src/ast.rs
index 8b98f083ccc4..7ac521b58773 100644
--- a/crates/jsdoc/src/ast.rs
+++ b/crates/jsdoc/src/ast.rs
@@ -30,7 +30,6 @@ pub struct TagItem {
 }
 
 #[ast_node]
-#[non_exhaustive]
 pub enum Tag {
     #[tag("Yield")]
     Yield(YieldTag),
diff --git a/crates/swc_bundler/Cargo.toml b/crates/swc_bundler/Cargo.toml
index f2a5377ae1ee..40a436372323 100644
--- a/crates/swc_bundler/Cargo.toml
+++ b/crates/swc_bundler/Cargo.toml
@@ -18,6 +18,9 @@ version       = "32.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [features]
 concurrent = ["swc_common/concurrent", "dashmap", "rayon", "indexmap/rayon"]
diff --git a/crates/swc_bundler/src/bundler/chunk/cjs.rs b/crates/swc_bundler/src/bundler/chunk/cjs.rs
index 4d6e1c6fc2c6..8b7db90b3886 100644
--- a/crates/swc_bundler/src/bundler/chunk/cjs.rs
+++ b/crates/swc_bundler/src/bundler/chunk/cjs.rs
@@ -140,6 +140,8 @@ fn wrap_module(
                             unreachable!("module item found but is_es6 is false: {:?}", i)
                         }
                         ModuleItem::Stmt(s) => s,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     })
                     .collect(),
                 ..Default::default()
@@ -318,6 +320,8 @@ where
                         .into();
                         return;
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
 
diff --git a/crates/swc_bundler/src/bundler/chunk/computed_key.rs b/crates/swc_bundler/src/bundler/chunk/computed_key.rs
index bef0b974fd4b..677043d014f0 100644
--- a/crates/swc_bundler/src/bundler/chunk/computed_key.rs
+++ b/crates/swc_bundler/src/bundler/chunk/computed_key.rs
@@ -73,6 +73,8 @@ where
                                 ModuleExportName::Str(..) => {
                                     unimplemented!("module string names unimplemented")
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             };
                             if ctx.transitive_remap.get(&exported.ctxt).is_some() {
                                 let specifier = ExportSpecifier::Named(ExportNamedSpecifier {
@@ -230,6 +232,8 @@ impl Fold for ExportToReturn {
         let decl = match item {
             ModuleItem::ModuleDecl(decl) => decl,
             ModuleItem::Stmt(_) => return item,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         let stmt = match decl {
@@ -287,6 +291,8 @@ impl Fold for ExportToReturn {
                     )
                 }
                 DefaultDecl::TsInterfaceDecl(_) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             ModuleDecl::ExportDefaultExpr(_) => None,
             ModuleDecl::ExportAll(export) => return export.into(),
@@ -308,6 +314,8 @@ impl Fold for ExportToReturn {
                             Some(ModuleExportName::Str(..)) => {
                                 unimplemented!("module string names unimplemented")
                             }
+                            #[cfg(swc_ast_unknown)]
+                            Some(_) => panic!("unable to access unknown nodes"),
                             None => {
                                 if let ModuleExportName::Ident(orig) = &named.orig {
                                     self.export_id(orig.clone());
@@ -316,6 +324,8 @@ impl Fold for ExportToReturn {
                                 }
                             }
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -332,6 +342,8 @@ impl Fold for ExportToReturn {
             ModuleDecl::TsImportEquals(_) => None,
             ModuleDecl::TsExportAssignment(_) => None,
             ModuleDecl::TsNamespaceExport(_) => None,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if let Some(stmt) = stmt {
diff --git a/crates/swc_bundler/src/bundler/chunk/merge.rs b/crates/swc_bundler/src/bundler/chunk/merge.rs
index 7fae8feaae94..4263aafef3ee 100644
--- a/crates/swc_bundler/src/bundler/chunk/merge.rs
+++ b/crates/swc_bundler/src/bundler/chunk/merge.rs
@@ -264,6 +264,8 @@ where
                                             ModuleExportName::Str(..) => {
                                                 unimplemented!("module string names unimplemented")
                                             }
+                                            #[cfg(swc_ast_unknown)]
+                                            _ => panic!("unable to access unknown nodes"),
                                         };
 
                                         let id: Id = exported.into();
@@ -286,9 +288,13 @@ where
                                             ModuleExportName::Str(..) => {
                                                 unimplemented!("module string names unimplemented")
                                             }
+                                            #[cfg(swc_ast_unknown)]
+                                            _ => panic!("unable to access unknown nodes"),
                                         }
                                     }
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             }
                         }
                     }
@@ -380,11 +386,15 @@ where
                             Expr::Call(CallExpr { callee, .. }) => match callee {
                                 Callee::Super(_) | Callee::Import(_) => continue,
                                 Callee::Expr(v) => v,
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             },
                             Expr::Await(AwaitExpr { arg, .. }) => match &mut **arg {
                                 Expr::Call(CallExpr { callee, .. }) => match callee {
                                     Callee::Super(_) | Callee::Import(_) => continue,
                                     Callee::Expr(v) => v,
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 },
                                 _ => continue,
                             },
@@ -518,6 +528,8 @@ where
                             ModuleExportName::Str(..) => {
                                 unimplemented!("module string names unimplemented")
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         };
                         // Default is not exported via `export *`
                         if &*exported.sym == "default" {
@@ -613,6 +625,8 @@ where
                                             ModuleExportName::Str(..) => {
                                                 unimplemented!("module string names unimplemented")
                                             }
+                                            #[cfg(swc_ast_unknown)]
+                                            _ => panic!("unable to access unknown nodes"),
                                         };
                                         new.push(
                                             imported
@@ -665,6 +679,8 @@ where
                                         );
                                     }
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             }
                         }
 
@@ -754,6 +770,8 @@ where
                                 }
                             }
                             DefaultDecl::TsInterfaceDecl(_) => continue,
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
 
                         // Create `export { local_default as default }`
@@ -926,6 +944,8 @@ where
                             | Decl::TsEnum(_)
                             | Decl::TsModule(_)
                             | Decl::Using(..) => continue,
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         };
 
                         tracing::trace!(
@@ -1023,6 +1043,8 @@ where
                                                             "module string names unimplemented"
                                                         )
                                                     }
+                                                    #[cfg(swc_ast_unknown)]
+                                                    _ => panic!("unable to access unknown nodes"),
                                                 };
                                             }
                                             ExportSpecifier::Default(s) => {
@@ -1069,6 +1091,8 @@ where
                                                     definite: Default::default(),
                                                 });
                                             }
+                                            #[cfg(swc_ast_unknown)]
+                                            _ => panic!("unable to access unknown nodes"),
                                         }
                                     }
 
@@ -1101,6 +1125,8 @@ where
                                         ModuleExportName::Str(..) => {
                                             unimplemented!("module string names unimplemented")
                                         }
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unable to access unknown nodes"),
                                     };
                                     let orig_ident = match orig {
                                         ModuleExportName::Ident(ident) => ident,
@@ -1202,6 +1228,8 @@ where
                                             ModuleExportName::Str(..) => {
                                                 unimplemented!("module string names unimplemented")
                                             }
+                                            #[cfg(swc_ast_unknown)]
+                                            _ => panic!("unable to access unknown nodes"),
                                         }
                                     }
                                 }
@@ -1262,6 +1290,8 @@ where
                                         ModuleExportName::Str(..) => {
                                             unimplemented!("module string names unimplemented")
                                         }
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unable to access unknown nodes"),
                                     };
                                     vars.push((
                                         module_id,
@@ -1317,6 +1347,8 @@ where
                                     continue;
                                 }
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
                     }
 
diff --git a/crates/swc_bundler/src/bundler/export.rs b/crates/swc_bundler/src/bundler/export.rs
index 234e6d6e419b..8d224dc7360c 100644
--- a/crates/swc_bundler/src/bundler/export.rs
+++ b/crates/swc_bundler/src/bundler/export.rs
@@ -229,6 +229,8 @@ where
                                 ModuleExportName::Str(..) => {
                                     unimplemented!("module string names unimplemented")
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             };
                         }
                         ExportSpecifier::Default(d) => {
@@ -243,6 +245,8 @@ where
                                 ModuleExportName::Str(..) => {
                                     unimplemented!("module string names unimplemented")
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             };
                             if let Some((_, export_ctxt)) = ctxt {
                                 orig.ctxt = export_ctxt;
@@ -255,6 +259,8 @@ where
                                 Some(ModuleExportName::Str(..)) => {
                                     unimplemented!("module string names unimplemented")
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                Some(_) => panic!("unable to access unknown nodes"),
                                 None => {
                                     let mut exported: Ident = orig.clone();
                                     exported.ctxt = self.export_ctxt;
@@ -280,6 +286,8 @@ where
                                 }
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
diff --git a/crates/swc_bundler/src/bundler/finalize.rs b/crates/swc_bundler/src/bundler/finalize.rs
index 8a5fcd9170c9..59aef6b95fac 100644
--- a/crates/swc_bundler/src/bundler/finalize.rs
+++ b/crates/swc_bundler/src/bundler/finalize.rs
@@ -164,6 +164,8 @@ where
                     let decl = match item {
                         ModuleItem::ModuleDecl(v) => v,
                         ModuleItem::Stmt(stmt) => return Some(stmt),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     match decl {
@@ -224,6 +226,8 @@ where
                                                 ModuleExportName::Str(..) => unimplemented!(
                                                     "module string names unimplemented"
                                                 ),
+                                                #[cfg(swc_ast_unknown)]
+                                                _ => panic!("unable to access unknown nodes"),
                                             };
                                             props.push(PropOrSpread::Prop(Box::new(
                                                 Prop::KeyValue(KeyValueProp {
@@ -235,18 +239,24 @@ where
                                         Some(ModuleExportName::Str(..)) => {
                                             unimplemented!("module string names unimplemented")
                                         }
+                                        #[cfg(swc_ast_unknown)]
+                                        Some(_) => panic!("unable to access unknown nodes"),
                                         None => {
                                             let orig = match s.orig {
                                                 ModuleExportName::Ident(ident) => ident,
                                                 ModuleExportName::Str(..) => unimplemented!(
                                                     "module string names unimplemented"
                                                 ),
+                                                #[cfg(swc_ast_unknown)]
+                                                _ => panic!("unable to access unknown nodes"),
                                             };
                                             props.push(PropOrSpread::Prop(Box::new(
                                                 Prop::Shorthand(orig),
                                             )));
                                         }
                                     },
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 }
                             }
 
@@ -303,6 +313,8 @@ where
                                 )
                             }
                             DefaultDecl::TsInterfaceDecl(_) => None,
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
                         ModuleDecl::ExportDefaultExpr(export) => {
                             let default_var = private_ident!("default");
@@ -328,6 +340,9 @@ where
                         }
 
                         ModuleDecl::ExportAll(_) => None,
+
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 })
                 .collect(),
diff --git a/crates/swc_bundler/src/bundler/import/mod.rs b/crates/swc_bundler/src/bundler/import/mod.rs
index 7260fd34cf01..8c79601ab0d3 100644
--- a/crates/swc_bundler/src/bundler/import/mod.rs
+++ b/crates/swc_bundler/src/bundler/import/mod.rs
@@ -368,6 +368,8 @@ where
         let orig = match &s.orig {
             ModuleExportName::Ident(ident) => ident,
             ModuleExportName::Str(..) => unimplemented!("module string names unimplemented"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         self.add_forced_ns_for(orig.to_id());
@@ -378,6 +380,8 @@ where
                 exported.ctxt = self.module_ctxt;
             }
             Some(ModuleExportName::Str(..)) => unimplemented!("module string names unimplemented"),
+            #[cfg(swc_ast_unknown)]
+            Some(_) => panic!("unable to access unknown nodes"),
             None => {
                 let exported = Ident::new(orig.sym.clone(), orig.span, self.module_ctxt);
                 s.exported = Some(ModuleExportName::Ident(exported));
@@ -438,6 +442,8 @@ where
                                 Some(ModuleExportName::Str(..)) => {
                                     unimplemented!("module string names unimplemented")
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                Some(_) => panic!("unable to access unknown nodes"),
                                 None => {
                                     let mut imported: Ident = n.local.clone();
                                     imported.ctxt = export_ctxt;
@@ -451,6 +457,8 @@ where
                         ImportSpecifier::Namespace(n) => {
                             self.imported_idents.insert(n.local.to_id(), export_ctxt);
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
             }
diff --git a/crates/swc_bundler/src/bundler/keywords.rs b/crates/swc_bundler/src/bundler/keywords.rs
index 53112c77f4f3..f5bcf0b2a956 100644
--- a/crates/swc_bundler/src/bundler/keywords.rs
+++ b/crates/swc_bundler/src/bundler/keywords.rs
@@ -61,6 +61,8 @@ impl VisitMut for KeywordRenamer {
         let orig = match &n.orig {
             ModuleExportName::Ident(ident) => ident,
             ModuleExportName::Str(..) => unimplemented!("module string names unimplemented"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         if let Some(renamed) = self.renamed(orig) {
             n.orig = ModuleExportName::Ident(renamed);
diff --git a/crates/swc_bundler/src/bundler/load.rs b/crates/swc_bundler/src/bundler/load.rs
index 23f9362ade00..4d5bc47b26c1 100644
--- a/crates/swc_bundler/src/bundler/load.rs
+++ b/crates/swc_bundler/src/bundler/load.rs
@@ -373,6 +373,8 @@ where
                                 all: forced_ns.contains(&src.src.value),
                             });
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -438,6 +440,8 @@ impl Visit for Es6ModuleDetector {
                 }
             }
             Callee::Super(_) | Callee::Import(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -480,6 +484,8 @@ impl Visit for Es6ModuleDetector {
             ModuleDecl::TsImportEquals(_) => {}
             ModuleDecl::TsExportAssignment(_) => {}
             ModuleDecl::TsNamespaceExport(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_bundler/src/inline.rs b/crates/swc_bundler/src/inline.rs
index 6545db636344..1d8c6496225e 100644
--- a/crates/swc_bundler/src/inline.rs
+++ b/crates/swc_bundler/src/inline.rs
@@ -141,6 +141,8 @@ impl VisitMut for Inliner {
                 e.expr.visit_mut_with(self);
             }
             PropName::BigInt(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
diff --git a/crates/swc_bundler/src/modules/sort/stmt.rs b/crates/swc_bundler/src/modules/sort/stmt.rs
index 719c01f80cca..f3b7366ab667 100644
--- a/crates/swc_bundler/src/modules/sort/stmt.rs
+++ b/crates/swc_bundler/src/modules/sort/stmt.rs
@@ -422,6 +422,8 @@ impl Visit for FieldInitFinder {
                     }
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         e.visit_children_with(self);
@@ -568,6 +570,8 @@ impl Visit for RequirementCalculator {
         let orig = match &n.orig {
             ModuleExportName::Ident(ident) => ident,
             ModuleExportName::Str(..) => unimplemented!("module string names unimplemented"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         self.insert(orig.clone().into());
     }
diff --git a/crates/swc_css_ast/src/at_rule.rs b/crates/swc_css_ast/src/at_rule.rs
index 062c200b41b0..cb530c76cf41 100644
--- a/crates/swc_css_ast/src/at_rule.rs
+++ b/crates/swc_css_ast/src/at_rule.rs
@@ -18,7 +18,7 @@ pub struct AtRule {
     pub block: Option<SimpleBlock>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AtRuleName {
     #[tag("DashedIdent")]
@@ -46,7 +46,7 @@ impl PartialEq<Atom> for AtRuleName {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AtRulePrelude {
     #[tag("ListOfComponentValues")]
@@ -99,7 +99,7 @@ pub struct ScopeRange {
     pub scope_end: Option<ForgivingSelectorList>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ColorProfileName {
     #[tag("DashedIdent")]
@@ -122,7 +122,7 @@ pub struct FontFeatureValuesPrelude {
     pub font_family: Vec<FamilyName>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum DocumentPreludeMatchingFunction {
     #[tag("Url")]
@@ -131,7 +131,7 @@ pub enum DocumentPreludeMatchingFunction {
     Function(Function),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum KeyframesName {
     #[tag("CustomIdent")]
@@ -170,7 +170,7 @@ pub struct KeyframeBlock {
     pub block: SimpleBlock,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum KeyframeSelector {
     #[tag("Ident")]
@@ -188,7 +188,7 @@ pub struct ImportPrelude {
     pub import_conditions: Option<Box<ImportConditions>>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ImportHref {
     #[tag("Url")]
@@ -197,7 +197,7 @@ pub enum ImportHref {
     Str(Str),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ImportLayerName {
     #[tag("Ident")]
@@ -222,7 +222,7 @@ pub struct NamespacePrelude {
     pub uri: Box<NamespacePreludeUri>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum NamespacePreludeUri {
     #[tag("Url")]
@@ -269,14 +269,14 @@ impl EqIgnoreSpan for MediaQuery {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaType {
     #[tag("Ident")]
     Ident(Ident),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaConditionType {
     #[tag("MediaCondition")]
@@ -300,7 +300,7 @@ pub struct MediaConditionWithoutOr {
     pub conditions: Vec<MediaConditionWithoutOrType>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaConditionAllType {
     #[tag("MediaNot")]
@@ -316,7 +316,7 @@ pub enum MediaConditionAllType {
     MediaInParens(MediaInParens),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaConditionWithoutOrType {
     #[tag("MediaNot")]
@@ -371,7 +371,7 @@ impl EqIgnoreSpan for MediaOr {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaInParens {
     #[tag("MediaCondition")]
@@ -384,7 +384,7 @@ pub enum MediaInParens {
     GeneralEnclosed(GeneralEnclosed),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaFeature {
     #[tag("MediaFeaturePlain")]
@@ -400,7 +400,7 @@ pub enum MediaFeature {
     RangeInterval(MediaFeatureRangeInterval),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaFeatureName {
     #[tag("Ident")]
@@ -410,7 +410,7 @@ pub enum MediaFeatureName {
     ExtensionName(ExtensionName),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum MediaFeatureValue {
     #[tag("Number")]
@@ -502,7 +502,7 @@ pub struct SupportsCondition {
     pub conditions: Vec<SupportsConditionType>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SupportsConditionType {
     #[tag("SupportsNot")]
@@ -560,7 +560,7 @@ impl EqIgnoreSpan for SupportsOr {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SupportsInParens {
     #[tag("SupportsCondition")]
@@ -573,7 +573,7 @@ pub enum SupportsInParens {
     GeneralEnclosed(GeneralEnclosed),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SupportsFeature {
     #[tag("Declaration")]
@@ -582,7 +582,7 @@ pub enum SupportsFeature {
     Function(Function),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum GeneralEnclosed {
     #[tag("Function")]
@@ -620,7 +620,7 @@ pub struct PageSelectorPseudo {
     pub value: Ident,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum LayerPrelude {
     #[tag("LayerName")]
@@ -651,7 +651,7 @@ pub struct ContainerCondition {
     pub query: ContainerQuery,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ContainerName {
     #[tag("CustomIdent")]
@@ -665,7 +665,7 @@ pub struct ContainerQuery {
     pub queries: Vec<ContainerQueryType>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ContainerQueryType {
     #[tag("ContainerQueryNot")]
@@ -723,7 +723,7 @@ impl EqIgnoreSpan for ContainerQueryOr {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum QueryInParens {
     #[tag("ContainerQuery")]
@@ -740,7 +740,7 @@ pub enum QueryInParens {
     GeneralEnclosed(GeneralEnclosed),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SizeFeature {
     #[tag("SizeFeaturePlain")]
@@ -822,7 +822,7 @@ pub struct SizeFeatureRangeInterval {
     pub right: Box<SizeFeatureValue>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SizeFeatureValue {
     #[tag("Number")]
@@ -841,7 +841,7 @@ pub enum SizeFeatureValue {
     Function(Function),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SizeFeatureName {
     #[tag("Ident")]
@@ -893,7 +893,7 @@ impl Take for CustomMediaQuery {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum CustomMediaQueryMediaType {
     #[tag("Ident")]
diff --git a/crates/swc_css_ast/src/base.rs b/crates/swc_css_ast/src/base.rs
index a877d72ed109..4638cf78a60a 100644
--- a/crates/swc_css_ast/src/base.rs
+++ b/crates/swc_css_ast/src/base.rs
@@ -16,7 +16,7 @@ pub struct Stylesheet {
     pub rules: Vec<Rule>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Rule {
     #[tag("QualifiedRule")]
@@ -53,7 +53,7 @@ impl Take for QualifiedRule {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum QualifiedRulePrelude {
     #[tag("SelectorList")]
@@ -70,7 +70,7 @@ impl Take for QualifiedRulePrelude {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum StyleBlock {
     #[tag("AtRule")]
@@ -101,7 +101,7 @@ impl Take for SimpleBlock {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum FunctionName {
     #[tag("Ident")]
@@ -162,7 +162,7 @@ pub struct ListOfComponentValues {
     pub children: Vec<ComponentValue>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ComponentValue {
     // No grammar
@@ -284,7 +284,7 @@ impl From<Rule> for ComponentValue {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum DeclarationOrAtRule {
     #[tag("Declaration")]
@@ -306,7 +306,7 @@ pub struct Declaration {
     pub important: Option<ImportantFlag>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum DeclarationName {
     #[tag("Ident")]
diff --git a/crates/swc_css_ast/src/selector.rs b/crates/swc_css_ast/src/selector.rs
index 4854ac390c29..de5555b51e42 100644
--- a/crates/swc_css_ast/src/selector.rs
+++ b/crates/swc_css_ast/src/selector.rs
@@ -28,7 +28,7 @@ pub struct ForgivingSelectorList {
     pub children: Vec<ForgivingComplexSelector>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ForgivingComplexSelector {
     #[tag("ComplexSelector")]
@@ -58,7 +58,7 @@ pub struct ForgivingRelativeSelectorList {
     pub children: Vec<ForgivingRelativeSelector>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ForgivingRelativeSelector {
     #[tag("RelativeSelector")]
@@ -83,7 +83,7 @@ impl Take for ComplexSelector {
     }
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum ComplexSelectorChildren {
     #[tag("CompoundSelector")]
@@ -153,7 +153,7 @@ pub struct NestingSelector {
     pub span: Span,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum TypeSelector {
     #[tag("TagNameSelector")]
@@ -183,7 +183,7 @@ pub struct NamespacePrefix {
     pub namespace: Option<Namespace>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Namespace {
     #[tag("NamedNamespace")]
@@ -213,7 +213,7 @@ pub struct WqName {
     pub value: Ident,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum SubclassSelector {
     #[tag("IdSelector")]
@@ -297,7 +297,7 @@ pub struct AttributeSelectorMatcher {
     pub value: AttributeSelectorMatcherValue,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AttributeSelectorValue {
     #[tag("String")]
@@ -322,7 +322,7 @@ pub struct PseudoClassSelector {
     pub children: Option<Vec<PseudoClassSelectorChildren>>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum PseudoClassSelectorChildren {
     #[tag("TokenAndSpan")]
@@ -362,7 +362,7 @@ pub enum PseudoClassSelectorChildren {
     CompoundSelector(CompoundSelector),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AnPlusB {
     #[tag("Ident")]
@@ -389,7 +389,7 @@ pub struct PseudoElementSelector {
     pub children: Option<Vec<PseudoElementSelectorChildren>>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum PseudoElementSelectorChildren {
     #[tag("TokenAndSpan")]
diff --git a/crates/swc_css_ast/src/value.rs b/crates/swc_css_ast/src/value.rs
index 5bde31084d6b..dbd8faa64c4d 100644
--- a/crates/swc_css_ast/src/value.rs
+++ b/crates/swc_css_ast/src/value.rs
@@ -141,7 +141,7 @@ pub struct Delimiter {
 
 // TODO small AST improve for `CurrentColorOrSystemColor` and
 // `NamedColorOrTransparent`
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Color {
     #[tag("AbsoluteColorBase")]
@@ -153,7 +153,7 @@ pub enum Color {
     Function(Function),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AbsoluteColorBase {
     #[tag("HexColor")]
@@ -175,7 +175,7 @@ pub struct HexColor {
     pub raw: Option<Atom>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AlphaValue {
     #[tag("Number")]
@@ -184,7 +184,7 @@ pub enum AlphaValue {
     Percentage(Percentage),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Hue {
     #[tag("Number")]
@@ -193,7 +193,7 @@ pub enum Hue {
     Angle(Angle),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum CmykComponent {
     #[tag("Number")]
@@ -204,7 +204,7 @@ pub enum CmykComponent {
     Function(Function),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Dimension {
     #[tag("Length")]
@@ -292,7 +292,7 @@ pub struct Percentage {
     pub value: Number,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum LengthPercentage {
     #[tag("Length")]
@@ -301,7 +301,7 @@ pub enum LengthPercentage {
     Percentage(Percentage),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum FrequencyPercentage {
     #[tag("Frequency")]
@@ -310,7 +310,7 @@ pub enum FrequencyPercentage {
     Percentage(Percentage),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum AnglePercentage {
     #[tag("Angle")]
@@ -319,7 +319,7 @@ pub enum AnglePercentage {
     Percentage(Percentage),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum TimePercentage {
     #[tag("Time")]
@@ -420,7 +420,7 @@ pub struct Url {
     pub modifiers: Option<Vec<UrlModifier>>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum UrlValue {
     #[tag("Str")]
@@ -438,7 +438,7 @@ pub struct UrlValueRaw {
     pub raw: Option<Atom>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum UrlModifier {
     #[tag("Ident")]
@@ -472,7 +472,7 @@ pub struct CalcSum {
     pub expressions: Vec<CalcProductOrOperator>,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum CalcProductOrOperator {
     #[tag("CalcProduct")]
@@ -518,7 +518,7 @@ pub enum CalcOperatorType {
     Div,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum CalcValueOrOperator {
     #[tag("CalcValue")]
@@ -527,7 +527,7 @@ pub enum CalcValueOrOperator {
     Operator(CalcOperator),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum CalcValue {
     #[tag("Number")]
@@ -544,7 +544,7 @@ pub enum CalcValue {
     Function(Function),
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum FamilyName {
     #[tag("Str")]
diff --git a/crates/swc_ecma_ast/Cargo.toml b/crates/swc_ecma_ast/Cargo.toml
index 48c1dfe7a3b0..91b5ea374398 100644
--- a/crates/swc_ecma_ast/Cargo.toml
+++ b/crates/swc_ecma_ast/Cargo.toml
@@ -15,6 +15,9 @@ version       = "15.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 __rkyv = []
 default = []
@@ -34,7 +37,6 @@ shrink-to-fit = [
   "swc_common/shrink-to-fit",
 ]
 
-
 [dependencies]
 arbitrary        = { workspace = true, features = ["derive"], optional = true }
 bitflags         = { workspace = true }
diff --git a/crates/swc_ecma_ast/src/class.rs b/crates/swc_ecma_ast/src/class.rs
index b14aa3ed870b..86daf8b68230 100644
--- a/crates/swc_ecma_ast/src/class.rs
+++ b/crates/swc_ecma_ast/src/class.rs
@@ -271,6 +271,7 @@ pub struct Decorator {
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
 #[cfg_attr(feature = "serde-impl", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "shrink-to-fit", derive(shrink_to_fit::ShrinkToFit))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum MethodKind {
     #[default]
     #[cfg_attr(feature = "serde-impl", serde(rename = "method"))]
diff --git a/crates/swc_ecma_ast/src/decl.rs b/crates/swc_ecma_ast/src/decl.rs
index 69fdaf7d589b..40282c8cec7d 100644
--- a/crates/swc_ecma_ast/src/decl.rs
+++ b/crates/swc_ecma_ast/src/decl.rs
@@ -179,6 +179,7 @@ impl Take for VarDecl {
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
 #[cfg_attr(feature = "shrink-to-fit", derive(shrink_to_fit::ShrinkToFit))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum VarDeclKind {
     /// `var`
     #[default]
diff --git a/crates/swc_ecma_ast/src/expr.rs b/crates/swc_ecma_ast/src/expr.rs
index af7d6c2f5b05..e87bcdc188a4 100644
--- a/crates/swc_ecma_ast/src/expr.rs
+++ b/crates/swc_ecma_ast/src/expr.rs
@@ -1116,6 +1116,7 @@ pub struct MetaPropExpr {
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
 #[cfg_attr(feature = "shrink-to-fit", derive(shrink_to_fit::ShrinkToFit))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum MetaPropKind {
     /// `new.target`
     NewTarget,
diff --git a/crates/swc_ecma_ast/src/module_decl.rs b/crates/swc_ecma_ast/src/module_decl.rs
index f3ec54af99dd..a8a03e4499a4 100644
--- a/crates/swc_ecma_ast/src/module_decl.rs
+++ b/crates/swc_ecma_ast/src/module_decl.rs
@@ -146,6 +146,7 @@ pub struct ImportDecl {
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
 #[cfg_attr(feature = "serde-impl", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum ImportPhase {
     #[default]
     #[cfg_attr(feature = "serde-impl", serde(rename = "evaluation"))]
diff --git a/crates/swc_ecma_ast/src/operators.rs b/crates/swc_ecma_ast/src/operators.rs
index 89160a819240..eb1c7bad272d 100644
--- a/crates/swc_ecma_ast/src/operators.rs
+++ b/crates/swc_ecma_ast/src/operators.rs
@@ -10,6 +10,7 @@ use swc_common::EqIgnoreSpan;
 )]
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum BinaryOp {
     /// `==`
     #[default]
@@ -123,6 +124,7 @@ impl BinaryOp {
 )]
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum AssignOp {
     /// `=`
     #[default]
@@ -200,6 +202,7 @@ impl AssignOp {
 )]
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum UpdateOp {
     /// `++`
     #[default]
@@ -217,6 +220,7 @@ pub enum UpdateOp {
 )]
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum UnaryOp {
     /// `-`
     Minus,
diff --git a/crates/swc_ecma_ast/src/typescript.rs b/crates/swc_ecma_ast/src/typescript.rs
index 0fb25f40c096..fc983b812ac8 100644
--- a/crates/swc_ecma_ast/src/typescript.rs
+++ b/crates/swc_ecma_ast/src/typescript.rs
@@ -410,6 +410,7 @@ pub struct TsKeywordType {
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
 #[cfg_attr(feature = "serde-impl", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum TsKeywordTypeKind {
     #[cfg_attr(feature = "serde-impl", serde(rename = "any"))]
     TsAnyKeyword,
@@ -729,6 +730,7 @@ pub struct TsTypeOperator {
 )]
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum TsTypeOperatorOp {
     /// `keyof`
     KeyOf,
@@ -759,6 +761,7 @@ pub struct TsIndexedAccessType {
 )]
 #[cfg_attr(feature = "rkyv-impl", derive(bytecheck::CheckBytes))]
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum TruePlusMinus {
     True,
     Plus,
@@ -1162,6 +1165,7 @@ pub struct TsSatisfiesExpr {
 #[cfg_attr(feature = "rkyv-impl", repr(u32))]
 #[cfg_attr(feature = "serde-impl", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "shrink-to-fit", derive(shrink_to_fit::ShrinkToFit))]
+#[cfg_attr(swc_ast_unknown, non_exhaustive)]
 pub enum Accessibility {
     #[cfg_attr(feature = "serde-impl", serde(rename = "public"))]
     Public,
diff --git a/crates/swc_ecma_codegen/Cargo.toml b/crates/swc_ecma_codegen/Cargo.toml
index f5ba510e83c2..54e68fbed5bb 100644
--- a/crates/swc_ecma_codegen/Cargo.toml
+++ b/crates/swc_ecma_codegen/Cargo.toml
@@ -13,6 +13,9 @@ version       = "17.0.2"
 # This does not enable serde for ast nodes.
 serde-impl = ["swc_ecma_ast/serde"]
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [lib]
 bench = false
 
diff --git a/crates/swc_ecma_codegen/src/class.rs b/crates/swc_ecma_codegen/src/class.rs
index 58607f1529d2..6547c3a01105 100644
--- a/crates/swc_ecma_codegen/src/class.rs
+++ b/crates/swc_ecma_codegen/src/class.rs
@@ -2,6 +2,8 @@ use swc_common::{SourceMapper, Spanned};
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 use crate::{
     text_writer::WriteJs, util::StartsWithAlphaNum, Emitter, ListFormat, Result, SourceMapperExt,
 };
@@ -146,6 +148,8 @@ impl MacroNode for ClassMember {
             ClassMember::Empty(ref n) => emit!(n),
             ClassMember::StaticBlock(ref n) => emit!(n),
             ClassMember::AutoAccessor(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -207,6 +211,8 @@ impl MacroNode for Key {
         match self {
             Key::Private(n) => emit!(n),
             Key::Public(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -248,6 +254,8 @@ impl MacroNode for PrivateMethod {
 
                 emit!(self.key);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         emitter.emit_fn_trailing(&self.function)?;
@@ -286,6 +294,8 @@ impl MacroNode for ClassMethod {
                 }
                 MethodKind::Getter => true,
                 MethodKind::Setter => true,
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             };
 
             if starts_with_alpha_num {
@@ -339,6 +349,8 @@ impl MacroNode for ClassMethod {
 
                 emit!(self.key);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         if self.is_optional {
@@ -563,6 +575,8 @@ where
                 Accessibility::Public => keyword!(self, "public"),
                 Accessibility::Protected => keyword!(self, "protected"),
                 Accessibility::Private => keyword!(self, "private"),
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             }
             space!(self);
         }
diff --git a/crates/swc_ecma_codegen/src/decl.rs b/crates/swc_ecma_codegen/src/decl.rs
index f88406756206..e30fa8471df3 100644
--- a/crates/swc_ecma_codegen/src/decl.rs
+++ b/crates/swc_ecma_codegen/src/decl.rs
@@ -4,6 +4,8 @@ use swc_ecma_codegen_macros::node_impl;
 
 use super::{Emitter, Result};
 use crate::text_writer::WriteJs;
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 
 impl<W, S: SourceMapper> Emitter<'_, W, S>
 where
@@ -98,6 +100,8 @@ impl MacroNode for Decl {
             Decl::TsInterface(n) => emit!(n),
             Decl::TsModule(n) => emit!(n),
             Decl::TsTypeAlias(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
diff --git a/crates/swc_ecma_codegen/src/jsx.rs b/crates/swc_ecma_codegen/src/jsx.rs
index 420dd443bf9e..9e9bf76c38ea 100644
--- a/crates/swc_ecma_codegen/src/jsx.rs
+++ b/crates/swc_ecma_codegen/src/jsx.rs
@@ -4,6 +4,8 @@ use swc_ecma_codegen_macros::node_impl;
 
 use super::Emitter;
 use crate::text_writer::WriteJs;
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 
 impl<W, S: SourceMapper> Emitter<'_, W, S>
 where
@@ -63,6 +65,8 @@ impl MacroNode for JSXElementName {
             JSXElementName::Ident(ref n) => emit!(n),
             JSXElementName::JSXMemberExpr(ref n) => emit!(n),
             JSXElementName::JSXNamespacedName(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -89,6 +93,8 @@ impl MacroNode for JSXAttrValue {
             JSXAttrValue::JSXExprContainer(ref n) => emit!(n),
             JSXAttrValue::JSXElement(ref n) => emit!(n),
             JSXAttrValue::JSXFragment(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -100,6 +106,8 @@ impl MacroNode for JSXAttrName {
         match *self {
             JSXAttrName::Ident(ref n) => emit!(n),
             JSXAttrName::JSXNamespacedName(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -115,6 +123,8 @@ impl MacroNode for JSXAttrOrSpread {
                 emit!(n);
                 punct!(emitter, "}");
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -129,6 +139,8 @@ impl MacroNode for JSXElementChild {
             JSXElementChild::JSXFragment(ref n) => emit!(n),
             JSXElementChild::JSXSpreadChild(ref n) => emit!(n),
             JSXElementChild::JSXText(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -162,6 +174,8 @@ impl MacroNode for JSXExpr {
         match *self {
             JSXExpr::Expr(ref n) => emit!(n),
             JSXExpr::JSXEmptyExpr(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -250,6 +264,8 @@ impl MacroNode for JSXObject {
         match *self {
             JSXObject::Ident(ref n) => emit!(n),
             JSXObject::JSXMemberExpr(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
diff --git a/crates/swc_ecma_codegen/src/lib.rs b/crates/swc_ecma_codegen/src/lib.rs
index 3e599c0706f0..aae7558fd7b8 100644
--- a/crates/swc_ecma_codegen/src/lib.rs
+++ b/crates/swc_ecma_codegen/src/lib.rs
@@ -794,6 +794,8 @@ where
                     Callee::Super(callee) => span_has_leading_comment(cmt, callee.span),
                     Callee::Import(callee) => span_has_leading_comment(cmt, callee.span),
                     Callee::Expr(callee) => self.has_leading_comment(callee),
+                    #[cfg(swc_ast_unknown)]
+                    _ => false,
                 };
 
                 if has_leading {
@@ -847,7 +849,11 @@ where
                         AssignTargetPat::Array(a) => span_has_leading_comment(cmt, a.span),
                         AssignTargetPat::Object(o) => span_has_leading_comment(cmt, o.span),
                         AssignTargetPat::Invalid(..) => false,
+                        #[cfg(swc_ast_unknown)]
+                        _ => false,
                     },
+                    #[cfg(swc_ast_unknown)]
+                    _ => false,
                 };
 
                 if has_leading {
@@ -866,6 +872,8 @@ where
                         return true;
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => (),
             },
 
             _ => {}
@@ -1409,6 +1417,8 @@ impl MacroNode for Program {
         match self {
             Program::Module(m) => emit!(m),
             Program::Script(s) => emit!(s),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
             // TODO: reenable once experimental_metadata breaking change is merged
             // _ => unreachable!(),
         }
@@ -1480,6 +1490,8 @@ impl MacroNode for ModuleItem {
         match self {
             ModuleItem::Stmt(stmt) => emit!(stmt),
             ModuleItem::ModuleDecl(decl) => emit!(decl),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         emitter.emit_trailing_comments_of_pos(self.span().hi, true, true)?;
 
@@ -1500,6 +1512,8 @@ impl MacroNode for Callee {
             }
             Callee::Super(n) => emit!(n),
             Callee::Import(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -1581,6 +1595,8 @@ impl MacroNode for Expr {
             Expr::TsSatisfies(n) => {
                 emit!(n)
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         if emitter.comments.is_some() {
@@ -1613,6 +1629,8 @@ impl MacroNode for OptChainExpr {
                     MemberProp::Computed(computed) => emit!(computed),
                     MemberProp::Ident(i) => emit!(i),
                     MemberProp::PrivateName(p) => emit!(p),
+                    #[cfg(swc_ast_unknown)]
+                    _ => return Err(unknown_error()),
                 }
             }
             OptChainBase::Call(e) => {
@@ -1631,6 +1649,8 @@ impl MacroNode for OptChainExpr {
                 )?;
                 punct!(emitter, ")");
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -1735,6 +1755,8 @@ impl MacroNode for MemberExpr {
                 punct!(emitter, ".");
                 emit!(private);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         srcmap!(emitter, self, false);
@@ -1761,6 +1783,8 @@ impl MacroNode for SuperPropExpr {
                 punct!(emitter, ".");
                 emit!(i);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -1836,6 +1860,9 @@ impl MacroNode for MetaPropExpr {
             MetaPropKind::ImportMeta => keyword!(emitter, "import.meta"),
 
             MetaPropKind::NewTarget => keyword!(emitter, "new.target"),
+
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -2002,6 +2029,8 @@ impl MacroNode for BlockStmtOrExpr {
                 emit!(expr);
                 emitter.wr.decrease_indent()?;
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -2132,6 +2161,8 @@ impl MacroNode for UnaryExpr {
                 punct!(emitter, self.op.as_str());
                 false
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         };
 
         if should_emit_whitespace_before_operand(self) {
@@ -2327,3 +2358,11 @@ impl MacroNode for IdentName {
         Ok(())
     }
 }
+
+#[cfg(swc_ast_unknown)]
+fn unknown_error() -> io::Error {
+    io::Error::new(
+        io::ErrorKind::Unsupported,
+        "emit unknown variant is not supported",
+    )
+}
diff --git a/crates/swc_ecma_codegen/src/lit.rs b/crates/swc_ecma_codegen/src/lit.rs
index 1ebe6497faf6..9f9f5d81b974 100644
--- a/crates/swc_ecma_codegen/src/lit.rs
+++ b/crates/swc_ecma_codegen/src/lit.rs
@@ -6,6 +6,8 @@ use swc_common::{Spanned, DUMMY_SP};
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 use crate::{text_writer::WriteJs, CowStr, Emitter, SourceMapperExt};
 
 #[node_impl]
@@ -34,6 +36,8 @@ impl MacroNode for Lit {
                 emitter.wr.write_str(&n.flags)?;
             }
             Lit::JSXText(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
diff --git a/crates/swc_ecma_codegen/src/module_decls.rs b/crates/swc_ecma_codegen/src/module_decls.rs
index 5fc63e4d71e6..49ce14bffaae 100644
--- a/crates/swc_ecma_codegen/src/module_decls.rs
+++ b/crates/swc_ecma_codegen/src/module_decls.rs
@@ -2,6 +2,8 @@ use swc_common::Spanned;
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 use crate::{util::StartsWithAlphaNum, ListFormat};
 
 #[node_impl]
@@ -19,6 +21,8 @@ impl MacroNode for ModuleDecl {
             ModuleDecl::TsExportAssignment(ref n) => emit!(n),
             ModuleDecl::TsImportEquals(ref n) => emit!(n),
             ModuleDecl::TsNamespaceExport(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         emitter.emit_trailing_comments_of_pos(self.span().hi, true, true)?;
@@ -101,6 +105,8 @@ impl MacroNode for ExportDefaultDecl {
             DefaultDecl::Class(ref n) => emit!(n),
             DefaultDecl::Fn(ref n) => emit!(n),
             DefaultDecl::TsInterfaceDecl(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -131,6 +137,8 @@ impl MacroNode for ImportDecl {
                 space!(emitter);
                 keyword!(emitter, "defer");
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         let starts_with_ident = !self.specifiers.is_empty()
@@ -171,6 +179,8 @@ impl MacroNode for ImportDecl {
                     space!(emitter);
                     emit!(ns.local);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             }
         }
 
@@ -254,6 +264,8 @@ impl MacroNode for ExportSpecifier {
             }
             ExportSpecifier::Namespace(ref node) => emit!(node),
             ExportSpecifier::Named(ref node) => emit!(node),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
diff --git a/crates/swc_ecma_codegen/src/object.rs b/crates/swc_ecma_codegen/src/object.rs
index c329826a5cec..9e6200eae0a3 100644
--- a/crates/swc_ecma_codegen/src/object.rs
+++ b/crates/swc_ecma_codegen/src/object.rs
@@ -2,6 +2,8 @@ use swc_common::{Spanned, DUMMY_SP};
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 use crate::{is_empty_comments, ListFormat};
 
 #[node_impl]
@@ -50,6 +52,8 @@ impl MacroNode for Prop {
             Prop::Getter(ref n) => emit!(n),
             Prop::Setter(ref n) => emit!(n),
             Prop::Method(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -227,6 +231,8 @@ impl MacroNode for PropName {
             PropName::Num(ref n) => emit!(n),
             PropName::BigInt(ref n) => emit!(n),
             PropName::Computed(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
diff --git a/crates/swc_ecma_codegen/src/pat.rs b/crates/swc_ecma_codegen/src/pat.rs
index 5e2165e1c9b1..2c5bc283b188 100644
--- a/crates/swc_ecma_codegen/src/pat.rs
+++ b/crates/swc_ecma_codegen/src/pat.rs
@@ -2,6 +2,9 @@ use swc_common::Spanned;
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
+
 #[node_impl]
 impl MacroNode for Param {
     fn emit(&mut self, emitter: &mut Macro) -> Result {
@@ -30,6 +33,8 @@ impl MacroNode for Pat {
             Pat::Object(ref n) => emit!(n),
             Pat::Rest(ref n) => emit!(n),
             Pat::Invalid(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         if emitter.comments.is_some() {
@@ -64,6 +69,8 @@ impl MacroNode for PropOrSpread {
         match self {
             PropOrSpread::Prop(ref n) => emit!(n),
             PropOrSpread::Spread(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -94,6 +101,8 @@ impl MacroNode for AssignTarget {
         match self {
             AssignTarget::Simple(ref n) => emit!(n),
             AssignTarget::Pat(ref n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -115,6 +124,8 @@ impl MacroNode for SimpleAssignTarget {
             SimpleAssignTarget::TsSatisfies(n) => emit!(n),
             SimpleAssignTarget::TsTypeAssertion(n) => emit!(n),
             SimpleAssignTarget::TsInstantiation(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -128,6 +139,8 @@ impl MacroNode for AssignTargetPat {
             AssignTargetPat::Array(n) => emit!(n),
             AssignTargetPat::Object(n) => emit!(n),
             AssignTargetPat::Invalid(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -225,6 +238,8 @@ impl MacroNode for ObjectPatProp {
             ObjectPatProp::KeyValue(ref node) => emit!(node),
             ObjectPatProp::Assign(ref node) => emit!(node),
             ObjectPatProp::Rest(ref node) => emit!(node),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -277,6 +292,8 @@ impl MacroNode for ForHead {
             ForHead::Pat(n) => emit!(n),
             ForHead::VarDecl(n) => emit!(n),
             ForHead::UsingDecl(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
diff --git a/crates/swc_ecma_codegen/src/stmt.rs b/crates/swc_ecma_codegen/src/stmt.rs
index 9f28b5f1fb7d..189f45dfa8db 100644
--- a/crates/swc_ecma_codegen/src/stmt.rs
+++ b/crates/swc_ecma_codegen/src/stmt.rs
@@ -2,6 +2,8 @@ use swc_common::Spanned;
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
 use crate::util::{EndsWithAlphaNum, StartsWithAlphaNum};
 
 #[node_impl]
@@ -38,6 +40,8 @@ impl MacroNode for Stmt {
                 semi!(emitter);
             }
             Stmt::Decl(ref e) => emit!(e),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         if emitter.comments.is_some() {
             emitter.emit_trailing_comments_of_pos(self.span().hi(), true, true)?;
@@ -582,6 +586,8 @@ impl MacroNode for ModuleExportName {
         match self {
             ModuleExportName::Ident(ident) => emit!(ident),
             ModuleExportName::Str(s) => emit!(s),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -594,6 +600,8 @@ impl MacroNode for VarDeclOrExpr {
         match self {
             VarDeclOrExpr::Expr(node) => emit!(node),
             VarDeclOrExpr::VarDecl(node) => emit!(node),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
diff --git a/crates/swc_ecma_codegen/src/typescript.rs b/crates/swc_ecma_codegen/src/typescript.rs
index 39757b7f87e4..bc7cbb59be61 100644
--- a/crates/swc_ecma_codegen/src/typescript.rs
+++ b/crates/swc_ecma_codegen/src/typescript.rs
@@ -2,12 +2,17 @@ use swc_common::Spanned;
 use swc_ecma_ast::*;
 use swc_ecma_codegen_macros::node_impl;
 
+#[cfg(swc_ast_unknown)]
+use crate::unknown_error;
+
 #[node_impl]
 impl MacroNode for ParamOrTsParamProp {
     fn emit(&mut self, emitter: &mut Macro) -> Result {
         match self {
             ParamOrTsParamProp::Param(n) => emit!(n),
             ParamOrTsParamProp::TsParamProp(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
 
         Ok(())
@@ -170,6 +175,8 @@ impl MacroNode for TsEntityName {
                 emit!(n);
             }
             TsEntityName::Ident(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -228,6 +235,8 @@ impl MacroNode for TsEnumMemberId {
         match self {
             TsEnumMemberId::Ident(n) => emit!(n),
             TsEnumMemberId::Str(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -280,6 +289,8 @@ impl MacroNode for TsFnOrConstructorType {
         match self {
             TsFnOrConstructorType::TsFnType(n) => emit!(n),
             TsFnOrConstructorType::TsConstructorType(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -293,6 +304,8 @@ impl MacroNode for TsFnParam {
             TsFnParam::Array(n) => emit!(n),
             TsFnParam::Rest(n) => emit!(n),
             TsFnParam::Object(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -485,6 +498,8 @@ impl MacroNode for TsKeywordType {
             TsKeywordTypeKind::TsNullKeyword => keyword!(emitter, self.span, "null"),
             TsKeywordTypeKind::TsNeverKeyword => keyword!(emitter, self.span, "never"),
             TsKeywordTypeKind::TsIntrinsicKeyword => keyword!(emitter, self.span, "intrinsic"),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -499,6 +514,8 @@ impl MacroNode for TsLit {
             TsLit::Str(n) => emit!(n),
             TsLit::Bool(n) => emit!(n),
             TsLit::Tpl(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -562,6 +579,8 @@ impl MacroNode for TsMappedType {
                     keyword!(emitter, "readonly");
                     space!(emitter);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             },
         }
 
@@ -606,6 +625,8 @@ impl MacroNode for TsMappedType {
                     punct!(emitter, "-");
                     punct!(emitter, "?");
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             },
         }
 
@@ -689,6 +710,8 @@ impl MacroNode for TsModuleDecl {
                 // deprecate the module keyword in this context
                 TsModuleName::Ident(_) => keyword!(emitter, "namespace"),
                 TsModuleName::Str(_) => keyword!(emitter, "module"),
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             }
             space!(emitter);
             emit!(self.id);
@@ -713,6 +736,8 @@ impl MacroNode for TsModuleName {
         match self {
             TsModuleName::Ident(n) => emit!(n),
             TsModuleName::Str(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -726,6 +751,8 @@ impl MacroNode for TsModuleRef {
         match self {
             TsModuleRef::TsEntityName(n) => emit!(n),
             TsModuleRef::TsExternalModuleRef(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -741,6 +768,8 @@ impl MacroNode for TsNamespaceBody {
         match self {
             TsNamespaceBody::TsModuleBlock(n) => emit!(n),
             TsNamespaceBody::TsNamespaceDecl(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         emitter.wr.decrease_indent()?;
         punct!(emitter, "}");
@@ -816,6 +845,8 @@ impl MacroNode for TsParamProp {
                 Accessibility::Public => keyword!(emitter, "public"),
                 Accessibility::Protected => keyword!(emitter, "protected"),
                 Accessibility::Private => keyword!(emitter, "private"),
+                #[cfg(swc_ast_unknown)]
+                _ => return Err(unknown_error()),
             }
             space!(emitter);
         }
@@ -843,6 +874,8 @@ impl MacroNode for TsParamPropParam {
         match self {
             TsParamPropParam::Ident(n) => emit!(n),
             TsParamPropParam::Assign(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -932,6 +965,8 @@ impl MacroNode for TsThisTypeOrIdent {
         match self {
             TsThisTypeOrIdent::TsThisType(n) => emit!(n),
             TsThisTypeOrIdent::Ident(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -993,6 +1028,8 @@ impl MacroNode for TsType {
             TsType::TsLitType(n) => emit!(n),
             TsType::TsTypePredicate(n) => emit!(n),
             TsType::TsImportType(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -1130,6 +1167,8 @@ impl MacroNode for TsTypeElement {
             TsTypeElement::TsSetterSignature(n) => {
                 emit!(n)
             }
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         formatting_semi!(emitter);
         Ok(())
@@ -1209,6 +1248,8 @@ impl MacroNode for TsTypeOperator {
             TsTypeOperatorOp::KeyOf => keyword!(emitter, "keyof"),
             TsTypeOperatorOp::Unique => keyword!(emitter, "unique"),
             TsTypeOperatorOp::ReadOnly => keyword!(emitter, "readonly"),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         space!(emitter);
         emit!(self.type_ann);
@@ -1323,6 +1364,8 @@ impl MacroNode for TsTypeQueryExpr {
         match self {
             TsTypeQueryExpr::TsEntityName(n) => emit!(n),
             TsTypeQueryExpr::Import(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
@@ -1350,6 +1393,8 @@ impl MacroNode for TsUnionOrIntersectionType {
         match self {
             TsUnionOrIntersectionType::TsUnionType(n) => emit!(n),
             TsUnionOrIntersectionType::TsIntersectionType(n) => emit!(n),
+            #[cfg(swc_ast_unknown)]
+            _ => return Err(unknown_error()),
         }
         Ok(())
     }
diff --git a/crates/swc_ecma_codegen/src/util.rs b/crates/swc_ecma_codegen/src/util.rs
index 9ee6ad134f3b..7c742f67c03f 100644
--- a/crates/swc_ecma_codegen/src/util.rs
+++ b/crates/swc_ecma_codegen/src/util.rs
@@ -10,6 +10,8 @@ impl EndsWithAlphaNum for ForHead {
             ForHead::VarDecl(n) => n.ends_with_alpha_num(),
             ForHead::Pat(n) => n.ends_with_alpha_num(),
             ForHead::UsingDecl(n) => n.ends_with_alpha_num(),
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -72,6 +74,8 @@ impl EndsWithAlphaNum for Expr {
             Expr::OptChain(n) => match n.base.as_ref() {
                 OptChainBase::Member(base) => !base.prop.is_computed(),
                 OptChainBase::Call(_) => false,
+                #[cfg(swc_ast_unknown)]
+                _ => false,
             },
 
             Expr::Bin(n) => n.right.ends_with_alpha_num(),
@@ -99,6 +103,8 @@ macro_rules! alpha_num_enum {
                     $(
                         Self::$name(ref n) => n.starts_with_alpha_num(),
                     )*
+                    #[cfg(swc_ast_unknown)]
+                    _ => false,
                 }
             }
         }
@@ -162,6 +168,8 @@ impl StartsWithAlphaNum for PropName {
         match self {
             PropName::Str(_) | PropName::Computed(_) => false,
             PropName::Ident(_) | PropName::Num(_) | PropName::BigInt(_) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -246,6 +254,8 @@ impl StartsWithAlphaNum for Expr {
             Expr::OptChain(e) => e.starts_with_alpha_num(),
 
             Expr::Invalid(..) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -255,6 +265,8 @@ impl StartsWithAlphaNum for OptChainExpr {
         match &*self.base {
             OptChainBase::Member(base) => base.obj.starts_with_alpha_num(),
             OptChainBase::Call(base) => base.callee.starts_with_alpha_num(),
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -267,6 +279,8 @@ impl StartsWithAlphaNum for Pat {
             Pat::Object(..) | Pat::Array(..) | Pat::Rest(..) => false,
             Pat::Expr(ref expr) => expr.starts_with_alpha_num(),
             Pat::Invalid(..) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -308,6 +322,8 @@ impl StartsWithAlphaNum for Callee {
         match *self {
             Callee::Super(_) | Callee::Import(_) => true,
             Callee::Expr(ref e) => e.starts_with_alpha_num(),
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -332,6 +348,8 @@ impl StartsWithAlphaNum for Stmt {
             | Stmt::ForOf(..)
             | Stmt::If(..) => true,
             Stmt::Block(..) | Stmt::Empty(..) => false,
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
@@ -347,6 +365,8 @@ impl StartsWithAlphaNum for Decl {
             | Decl::TsModule(..)
             | Decl::TsTypeAlias(..)
             | Decl::Using(..) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
diff --git a/crates/swc_ecma_compat_common/src/macros.rs b/crates/swc_ecma_compat_common/src/macros.rs
index 2bf89c9a602a..749968c62e41 100644
--- a/crates/swc_ecma_compat_common/src/macros.rs
+++ b/crates/swc_ecma_compat_common/src/macros.rs
@@ -44,6 +44,7 @@ macro_rules! impl_visit_mut_fn {
                         })],
                         ..Default::default()
                     },
+                    _ => panic!("unable to access unknown nodes"),
                 },
             );
 
diff --git a/crates/swc_ecma_compat_es2015/Cargo.toml b/crates/swc_ecma_compat_es2015/Cargo.toml
index ff0d4072cf19..1f2dd41d58d7 100644
--- a/crates/swc_ecma_compat_es2015/Cargo.toml
+++ b/crates/swc_ecma_compat_es2015/Cargo.toml
@@ -12,6 +12,9 @@ version       = "29.0.0"
 
 # 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]
 arrayvec     = { workspace = true }
 indexmap     = { workspace = true }
diff --git a/crates/swc_ecma_compat_es2015/src/arrow.rs b/crates/swc_ecma_compat_es2015/src/arrow.rs
index 208d46738632..a5bcfd1c5d70 100644
--- a/crates/swc_ecma_compat_es2015/src/arrow.rs
+++ b/crates/swc_ecma_compat_es2015/src/arrow.rs
@@ -158,6 +158,8 @@ impl VisitMut for Arrow {
                             })],
                             ..Default::default()
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }),
                     ..Default::default()
                 }
diff --git a/crates/swc_ecma_compat_es2015/src/block_scoping/mod.rs b/crates/swc_ecma_compat_es2015/src/block_scoping/mod.rs
index e6b35370283f..d0410f961543 100644
--- a/crates/swc_ecma_compat_es2015/src/block_scoping/mod.rs
+++ b/crates/swc_ecma_compat_es2015/src/block_scoping/mod.rs
@@ -700,6 +700,8 @@ impl VisitMut for FlowHelper<'_> {
                     self.check(id);
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         n.visit_mut_children_with(self);
diff --git a/crates/swc_ecma_compat_es2015/src/block_scoping/vars.rs b/crates/swc_ecma_compat_es2015/src/block_scoping/vars.rs
index 12f7b0e124d8..7b5357c6145e 100644
--- a/crates/swc_ecma_compat_es2015/src/block_scoping/vars.rs
+++ b/crates/swc_ecma_compat_es2015/src/block_scoping/vars.rs
@@ -252,6 +252,8 @@ impl VisitMut for BlockScopedVars {
                 BlockStmtOrExpr::Expr(b) => {
                     b.visit_mut_with(v);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         });
     }
diff --git a/crates/swc_ecma_compat_es2015/src/classes/mod.rs b/crates/swc_ecma_compat_es2015/src/classes/mod.rs
index f61a92c14876..677f7c821b02 100644
--- a/crates/swc_ecma_compat_es2015/src/classes/mod.rs
+++ b/crates/swc_ecma_compat_es2015/src/classes/mod.rs
@@ -520,6 +520,9 @@ impl Classes {
                 | ClassMember::StaticBlock(..)
                 | ClassMember::AutoAccessor(..) => {}
                 ClassMember::Empty(..) => {}
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -632,6 +635,8 @@ impl Classes {
                     }
                     .into(),
                     PropName::Computed(c) => c.expr,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
             }))
         }
@@ -657,6 +662,8 @@ impl Classes {
                     .into(),
                 }),
                 PropName::Computed(c) => MemberProp::Computed(c),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -832,6 +839,8 @@ impl Classes {
                     data.set = None;
                     data.method = Some(value)
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
diff --git a/crates/swc_ecma_compat_es2015/src/classes/prop_name.rs b/crates/swc_ecma_compat_es2015/src/classes/prop_name.rs
index 4373cbeb2674..f5d11838a0d9 100644
--- a/crates/swc_ecma_compat_es2015/src/classes/prop_name.rs
+++ b/crates/swc_ecma_compat_es2015/src/classes/prop_name.rs
@@ -18,6 +18,8 @@ impl From<&PropName> for HashKey {
             PropName::Num(Number { value, .. }) => HashKey::Str(value.to_string().into()),
             PropName::BigInt(BigInt { value, .. }) => HashKey::Str(value.to_string().into()),
             PropName::Computed(expr) => HashKey::Computed(expr.span()),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -36,6 +38,8 @@ pub fn is_pure_prop_name(p: &PropName) -> bool {
             Expr::Tpl(tpl) => tpl.exprs.is_empty(),
             _ => false,
         },
+        #[cfg(swc_ast_unknown)]
+        _ => false,
     }
 }
 
diff --git a/crates/swc_ecma_compat_es2015/src/computed_props.rs b/crates/swc_ecma_compat_es2015/src/computed_props.rs
index e63e5c9dc3d6..b621892ed940 100644
--- a/crates/swc_ecma_compat_es2015/src/computed_props.rs
+++ b/crates/swc_ecma_compat_es2015/src/computed_props.rs
@@ -249,8 +249,12 @@ impl VisitMut for ComputedProps {
                             }
                             .into(),
                         ),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     },
                     PropOrSpread::Spread(..) => unimplemented!("computed spread property"),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
 
                 if !self.c.loose && props_cnt == 1 {
@@ -425,6 +429,8 @@ fn prop_name_to_expr(p: PropName, loose: bool) -> (Expr, bool) {
         PropName::Num(n) => (Lit::Num(n).into(), true),
         PropName::BigInt(b) => (Lit::BigInt(b).into(), true),
         PropName::Computed(c) => (*c.expr, true),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
diff --git a/crates/swc_ecma_compat_es2015/src/destructuring.rs b/crates/swc_ecma_compat_es2015/src/destructuring.rs
index 1200f292a2b3..0f2e7b26cfda 100644
--- a/crates/swc_ecma_compat_es2015/src/destructuring.rs
+++ b/crates/swc_ecma_compat_es2015/src/destructuring.rs
@@ -124,6 +124,9 @@ macro_rules! impl_for_for_stmt {
                 ForHead::UsingDecl(..) => {
                     unreachable!("using declaration must be removed by previous pass")
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
 
             for_stmt.left = left;
@@ -420,6 +423,8 @@ impl AssignFolder {
                             "Object rest pattern should be removed by es2018::object_rest_spread \
                              pass"
                         ),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
             }
@@ -520,6 +525,8 @@ impl Destructuring {
                 }
                 Pat::Rest(..) | Pat::Expr(..) => params.push(param),
                 Pat::Invalid(..) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -1004,6 +1011,8 @@ impl VisitMut for AssignFolder {
                                 "object rest pattern should be removed by \
                                  es2018::object_rest_spread pass"
                             ),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
                     }
 
@@ -1018,6 +1027,8 @@ impl VisitMut for AssignFolder {
                 }
 
                 AssignTargetPat::Invalid(..) => unreachable!(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         };
     }
@@ -1295,6 +1306,8 @@ fn can_be_null(e: &Expr) -> bool {
         | Expr::TsSatisfies(TsSatisfiesExpr { ref expr, .. }) => can_be_null(expr),
 
         Expr::Invalid(..) => unreachable!(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
diff --git a/crates/swc_ecma_compat_es2015/src/for_of.rs b/crates/swc_ecma_compat_es2015/src/for_of.rs
index f4eca94ea553..203569fbfb48 100644
--- a/crates/swc_ecma_compat_es2015/src/for_of.rs
+++ b/crates/swc_ecma_compat_es2015/src/for_of.rs
@@ -185,6 +185,9 @@ impl ForOf {
                 ForHead::UsingDecl(..) => {
                     unreachable!("using declaration must be removed by previous pass")
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
 
             let stmt = ForStmt {
@@ -286,6 +289,9 @@ impl ForOf {
                 ForHead::UsingDecl(..) => {
                     unreachable!("using declaration must be removed by previous pass")
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
 
             // !(_step = _iterator()).done;
@@ -377,6 +383,8 @@ impl ForOf {
                 ForHead::UsingDecl(..) => {
                     unreachable!("using declaration must be removed by previous pass")
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
         );
 
diff --git a/crates/swc_ecma_compat_es2015/src/generator.rs b/crates/swc_ecma_compat_es2015/src/generator.rs
index 924cbba6383c..56171a8a1d04 100644
--- a/crates/swc_ecma_compat_es2015/src/generator.rs
+++ b/crates/swc_ecma_compat_es2015/src/generator.rs
@@ -623,6 +623,8 @@ impl VisitMut for Generator {
                                     expr: prop.into(),
                                 });
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
                         // [source]
                     }
@@ -735,6 +737,8 @@ impl VisitMut for Generator {
                                     props.push(CompiledProp::Prop(p));
                                 }
                             },
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
 
                         props
@@ -1271,6 +1275,8 @@ impl Generator {
                     right: p.function.into(),
                 }
                 .into(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             CompiledProp::Accessor(getter, setter) => {
                 let key = getter
@@ -1704,6 +1710,8 @@ impl Generator {
                             .into(),
                         );
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
 
@@ -1830,6 +1838,9 @@ impl Generator {
                 ForHead::UsingDecl(..) => {
                     unreachable!("using declaration must be removed by previous pass")
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
             self.emit_assignment(
                 variable.try_into().unwrap(),
diff --git a/crates/swc_ecma_compat_es2015/src/object_super.rs b/crates/swc_ecma_compat_es2015/src/object_super.rs
index 85b4fea6d3f1..09e3fa4f4f6f 100644
--- a/crates/swc_ecma_compat_es2015/src/object_super.rs
+++ b/crates/swc_ecma_compat_es2015/src/object_super.rs
@@ -150,6 +150,8 @@ impl VisitMut for SuperReplacer {
                         }
                     }
                     Prop::Shorthand(_) | Prop::Assign(_) => (),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
         }
@@ -200,6 +202,8 @@ impl SuperReplacer {
             .into(),
 
             SuperProp::Computed(ComputedPropName { expr, .. }) => expr,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -287,6 +291,8 @@ impl SuperReplacer {
                     let op = match op {
                         op!("++") => op!("+="),
                         op!("--") => op!("-="),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
                     *n = self.super_to_set_call(*super_token, true, prop, op, 1.0.into(), *prefix);
                 }
@@ -396,6 +402,8 @@ impl SuperReplacer {
         let computed = match prop {
             SuperProp::Ident(_) => false,
             SuperProp::Computed(_) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         let mut prop = self.normalize_computed_expr(prop);
         match op {
diff --git a/crates/swc_ecma_compat_es2015/src/parameters.rs b/crates/swc_ecma_compat_es2015/src/parameters.rs
index d781c1d14ef9..f57d92ff3e18 100644
--- a/crates/swc_ecma_compat_es2015/src/parameters.rs
+++ b/crates/swc_ecma_compat_es2015/src/parameters.rs
@@ -650,6 +650,8 @@ impl VisitMut for Params {
                         })],
                         ..Default::default()
                     },
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
 
                 self.visit_mut_fn_like(&mut params, &mut body, false);
diff --git a/crates/swc_ecma_compat_es2016/Cargo.toml b/crates/swc_ecma_compat_es2016/Cargo.toml
index 5ad6dde071e2..3d793ebcc56e 100644
--- a/crates/swc_ecma_compat_es2016/Cargo.toml
+++ b/crates/swc_ecma_compat_es2016/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 
 # 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]
 swc_common                 = { version = "14.0.4", path = "../swc_common" }
 swc_ecma_ast               = { version = "15.0.0", path = "../swc_ecma_ast" }
diff --git a/crates/swc_ecma_compat_es2017/Cargo.toml b/crates/swc_ecma_compat_es2017/Cargo.toml
index 72feccef36c3..f38b2dc75b0b 100644
--- a/crates/swc_ecma_compat_es2017/Cargo.toml
+++ b/crates/swc_ecma_compat_es2017/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 
 # 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]
 serde   = { workspace = true, features = ["derive"] }
 tracing = { workspace = true }
diff --git a/crates/swc_ecma_compat_es2017/src/async_to_generator.rs b/crates/swc_ecma_compat_es2017/src/async_to_generator.rs
index 078954baa35e..6cc0cfdbfd43 100644
--- a/crates/swc_ecma_compat_es2017/src/async_to_generator.rs
+++ b/crates/swc_ecma_compat_es2017/src/async_to_generator.rs
@@ -207,6 +207,8 @@ impl VisitMut for AsyncToGenerator {
                 .into()],
                 ..Default::default()
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         let expr = make_fn_ref(&fn_state, vec![], body);
@@ -571,6 +573,9 @@ fn handle_await_for(stmt: &mut Stmt, is_async_generator: bool) {
             ForHead::UsingDecl(..) => {
                 unreachable!("using declaration must be removed by previous pass")
             }
+
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         for_loop_body.extend(orig_body);
diff --git a/crates/swc_ecma_compat_es2018/Cargo.toml b/crates/swc_ecma_compat_es2018/Cargo.toml
index 58e67aea7c20..f1b017d4d8e1 100644
--- a/crates/swc_ecma_compat_es2018/Cargo.toml
+++ b/crates/swc_ecma_compat_es2018/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 
 # 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]
 serde   = { workspace = true, features = ["derive"] }
 tracing = { workspace = true }
diff --git a/crates/swc_ecma_compat_es2018/src/object_rest.rs b/crates/swc_ecma_compat_es2018/src/object_rest.rs
index ca43ed2ddf82..e1f900820168 100644
--- a/crates/swc_ecma_compat_es2018/src/object_rest.rs
+++ b/crates/swc_ecma_compat_es2018/src/object_rest.rs
@@ -109,6 +109,9 @@ macro_rules! impl_for_for_stmt {
                 ForHead::UsingDecl(..) => {
                     unreachable!("using declaration must be removed by previous pass")
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
             for_stmt.left = left;
 
@@ -779,6 +782,8 @@ impl ObjectRest {
                                 }),
                             )
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     let value = Box::new(
@@ -965,6 +970,8 @@ fn excluded_props(props: &[ObjectPatProp]) -> Vec<Option<ExprOrSpread>> {
                 })
                 .as_arg(),
                 PropName::Computed(c) => c.expr.clone().as_arg(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             ObjectPatProp::Assign(AssignPatProp { key, .. }) => Lit::Str(Str {
                 span: key.span,
@@ -973,6 +980,8 @@ fn excluded_props(props: &[ObjectPatProp]) -> Vec<Option<ExprOrSpread>> {
             })
             .as_arg(),
             ObjectPatProp::Rest(..) => unreachable!("invalid syntax (multiple rest element)"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         })
         .map(Some)
         .collect()
diff --git a/crates/swc_ecma_compat_es2018/src/object_spread.rs b/crates/swc_ecma_compat_es2018/src/object_spread.rs
index 5c9403b1952e..65ea9a644288 100644
--- a/crates/swc_ecma_compat_es2018/src/object_spread.rs
+++ b/crates/swc_ecma_compat_es2018/src/object_spread.rs
@@ -82,6 +82,8 @@ impl VisitMut for ObjectSpread {
 
                             buf.push(expr.as_arg());
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
diff --git a/crates/swc_ecma_compat_es2019/Cargo.toml b/crates/swc_ecma_compat_es2019/Cargo.toml
index f12e59986021..8b970d5aeba1 100644
--- a/crates/swc_ecma_compat_es2019/Cargo.toml
+++ b/crates/swc_ecma_compat_es2019/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 
 # 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]
 tracing = { workspace = true }
 swc_common               = { version = "14.0.4", path = "../swc_common" }
diff --git a/crates/swc_ecma_compat_es2020/Cargo.toml b/crates/swc_ecma_compat_es2020/Cargo.toml
index e7f260a5b3e8..2da905567e9c 100644
--- a/crates/swc_ecma_compat_es2020/Cargo.toml
+++ b/crates/swc_ecma_compat_es2020/Cargo.toml
@@ -12,6 +12,9 @@ version       = "28.0.0"
 
 # 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]
 serde   = { workspace = true, features = ["derive"] }
 tracing = { workspace = true }
diff --git a/crates/swc_ecma_compat_es2021/Cargo.toml b/crates/swc_ecma_compat_es2021/Cargo.toml
index cfef9baf72fd..f7a010f284f1 100644
--- a/crates/swc_ecma_compat_es2021/Cargo.toml
+++ b/crates/swc_ecma_compat_es2021/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 
 # 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]
 tracing = { workspace = true }
 
diff --git a/crates/swc_ecma_compat_es2022/Cargo.toml b/crates/swc_ecma_compat_es2022/Cargo.toml
index d35e5a0d3b32..357f086bbce0 100644
--- a/crates/swc_ecma_compat_es2022/Cargo.toml
+++ b/crates/swc_ecma_compat_es2022/Cargo.toml
@@ -12,6 +12,9 @@ version       = "28.0.0"
 
 # 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]
 rustc-hash = { workspace = true }
 tracing    = { workspace = true }
diff --git a/crates/swc_ecma_compat_es2022/src/class_properties/mod.rs b/crates/swc_ecma_compat_es2022/src/class_properties/mod.rs
index 25eec4cd9a9d..4ba106ce8af3 100644
--- a/crates/swc_ecma_compat_es2022/src/class_properties/mod.rs
+++ b/crates/swc_ecma_compat_es2022/src/class_properties/mod.rs
@@ -448,6 +448,8 @@ impl ClassProperties {
                                         MethodKind::Getter => kind.has_getter = true,
                                         MethodKind::Setter => kind.has_setter = true,
                                         MethodKind::Method => unreachable!(),
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unable to access unknown nodes"),
                                     }
                                 }
                             } else {
@@ -524,6 +526,9 @@ impl ClassProperties {
             | ClassMember::AutoAccessor(_)
             | ClassMember::PrivateProp(_)
             | ClassMember::StaticBlock(_) => true,
+
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         });
 
         for member in class.body {
@@ -791,6 +796,8 @@ impl ClassProperties {
                                     method.key.name.clone()
                                 }
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
                         method.span,
                         SyntaxContext::empty().apply_mark(self.private.cur_mark()),
@@ -879,6 +886,8 @@ impl ClassProperties {
                                 None
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     if let Some(extra) = extra_collect {
@@ -937,6 +946,9 @@ impl ClassProperties {
                 ClassMember::AutoAccessor(..) => {
                     unreachable!("auto_accessor pass should remove this")
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
diff --git a/crates/swc_ecma_compat_es2022/src/optional_chaining_impl.rs b/crates/swc_ecma_compat_es2022/src/optional_chaining_impl.rs
index 510464e6333b..240081e795f6 100644
--- a/crates/swc_ecma_compat_es2022/src/optional_chaining_impl.rs
+++ b/crates/swc_ecma_compat_es2022/src/optional_chaining_impl.rs
@@ -217,6 +217,9 @@ impl OptionalChaining {
                         Gathering::Call(c.take().into())
                     });
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
 
             match *next {
diff --git a/crates/swc_ecma_compat_es3/Cargo.toml b/crates/swc_ecma_compat_es3/Cargo.toml
index 70f31b8d2c00..1d03143120d7 100644
--- a/crates/swc_ecma_compat_es3/Cargo.toml
+++ b/crates/swc_ecma_compat_es3/Cargo.toml
@@ -12,6 +12,9 @@ version       = "22.0.0"
 
 # 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]
 tracing = { workspace = true }
 
diff --git a/crates/swc_ecma_compiler/Cargo.toml b/crates/swc_ecma_compiler/Cargo.toml
index 2843790ce1f2..3f549fb6739f 100644
--- a/crates/swc_ecma_compiler/Cargo.toml
+++ b/crates/swc_ecma_compiler/Cargo.toml
@@ -9,6 +9,9 @@ name          = "swc_ecma_compiler"
 repository    = { workspace = true }
 version       = "5.0.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 bitflags   = { workspace = true }
 rustc-hash = { workspace = true }
diff --git a/crates/swc_ecma_compiler/src/es2020/export_namespace_from.rs b/crates/swc_ecma_compiler/src/es2020/export_namespace_from.rs
index 06f08b04b02e..ea6ed58a8f7d 100644
--- a/crates/swc_ecma_compiler/src/es2020/export_namespace_from.rs
+++ b/crates/swc_ecma_compiler/src/es2020/export_namespace_from.rs
@@ -62,6 +62,8 @@ impl<'a> CompilerImpl<'a> {
                             ExportSpecifier::Default(..) | ExportSpecifier::Named(..) => {
                                 origin_specifiers.push(s);
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
                     }
 
@@ -115,5 +117,7 @@ fn normalize_name(module_export_name: &ModuleExportName) -> &Atom {
     match module_export_name {
         ModuleExportName::Ident(Ident { sym: name, .. })
         | ModuleExportName::Str(Str { value: name, .. }) => name,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
diff --git a/crates/swc_ecma_lexer/Cargo.toml b/crates/swc_ecma_lexer/Cargo.toml
index 5f59a2d9d79f..cfdb164df604 100644
--- a/crates/swc_ecma_lexer/Cargo.toml
+++ b/crates/swc_ecma_lexer/Cargo.toml
@@ -16,6 +16,9 @@ version       = "23.0.2"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 # Used for debugging
 debug         = ["tracing-spans"]
diff --git a/crates/swc_ecma_lexer/src/common/parser/class_and_fn.rs b/crates/swc_ecma_lexer/src/common/parser/class_and_fn.rs
index be2f52dfe7cc..7e4db577a09b 100644
--- a/crates/swc_ecma_lexer/src/common/parser/class_and_fn.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/class_and_fn.rs
@@ -582,6 +582,8 @@ where
             }
             .into())
         }
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
 }
 
@@ -817,6 +819,8 @@ fn make_property<'a, P: Parser<'a>>(
                 }
                 .into()
             }
+            #[cfg(swc_ast_unknown)]
+            _ => unreachable!(),
         })
     })
 }
diff --git a/crates/swc_ecma_lexer/src/common/parser/expr.rs b/crates/swc_ecma_lexer/src/common/parser/expr.rs
index 8a74f6fb7899..e26512d5ce74 100644
--- a/crates/swc_ecma_lexer/src/common/parser/expr.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/expr.rs
@@ -586,6 +586,8 @@ fn parse_subscript<'a, P: Parser<'a>>(
                     )
                 }
                 Callee::Expr(expr) => expr,
+                #[cfg(swc_ast_unknown)]
+                _ => unreachable!(),
             };
             return Ok((
                 TsNonNullExpr {
@@ -808,6 +810,8 @@ fn parse_subscript<'a, P: Parser<'a>>(
                         expr
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => unreachable!(),
             }),
             true,
         ));
@@ -853,6 +857,8 @@ fn parse_subscript<'a, P: Parser<'a>>(
                     .into(),
                     true,
                 )),
+                #[cfg(swc_ast_unknown)]
+                _ => unreachable!(),
             }
         } else {
             Ok((
@@ -944,6 +950,8 @@ fn parse_subscript<'a, P: Parser<'a>>(
                                 )
                             }
                             MemberProp::Computed(..) => unreachable!(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => unreachable!(),
                         }
                     }
                 }
@@ -972,6 +980,8 @@ fn parse_subscript<'a, P: Parser<'a>>(
                         expr
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => unreachable!(),
             }),
             true,
         ));
@@ -1013,6 +1023,8 @@ fn parse_subscript<'a, P: Parser<'a>>(
         Callee::Import(..) => {
             syntax_error!(p, p.input().cur_span(), SyntaxError::InvalidImport);
         }
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
 }
 
@@ -1962,6 +1974,8 @@ fn parse_args_or_pats_inner<'a, P: Parser<'a>>(
                     // creating `Invalid`, we don't have to emit a new
                     // error.
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => (),
             }
 
             if p.input_mut().eat(&P::Token::EQUAL) {
diff --git a/crates/swc_ecma_lexer/src/common/parser/expr_ext.rs b/crates/swc_ecma_lexer/src/common/parser/expr_ext.rs
index 40b3c9c5e09b..aa5e2bd14756 100644
--- a/crates/swc_ecma_lexer/src/common/parser/expr_ext.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/expr_ext.rs
@@ -74,6 +74,9 @@ pub trait ExprExt {
             Expr::TsConstAssertion(..) => false,
 
             Expr::Invalid(..) => false,
+
+            #[cfg(swc_ast_unknown)]
+            _ => false,
         }
     }
 }
diff --git a/crates/swc_ecma_lexer/src/common/parser/jsx.rs b/crates/swc_ecma_lexer/src/common/parser/jsx.rs
index ac01484a1abf..248207d90b7b 100644
--- a/crates/swc_ecma_lexer/src/common/parser/jsx.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/jsx.rs
@@ -101,6 +101,8 @@ fn parse_jsx_element_name<'a, P: Parser<'a>>(p: &mut P) -> PResult<JSXElementNam
     let mut node = match parse_jsx_namespaced_name(p)? {
         JSXAttrName::Ident(i) => JSXElementName::Ident(i.into()),
         JSXAttrName::JSXNamespacedName(i) => JSXElementName::JSXNamespacedName(i),
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     };
     while p.input_mut().eat(&P::Token::DOT) {
         let prop = parse_jsx_ident(p).map(IdentName::from)?;
@@ -149,6 +151,8 @@ pub fn jsx_expr_container_to_jsx_attr_value<'a, P: Parser<'a>>(
             syntax_error!(p, p.span(start), SyntaxError::EmptyJSXAttr)
         }
         JSXExpr::Expr(..) => Ok(node.into()),
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
 }
 
diff --git a/crates/swc_ecma_lexer/src/common/parser/module_item.rs b/crates/swc_ecma_lexer/src/common/parser/module_item.rs
index 8437bbceffea..cd94241a5c5d 100644
--- a/crates/swc_ecma_lexer/src/common/parser/module_item.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/module_item.rs
@@ -331,6 +331,9 @@ fn parse_import_specifier<'a, P: Parser<'a>>(
                 )
             }
         }
+
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
 }
 
@@ -685,6 +688,8 @@ fn parse_export<'a, P: Parser<'a>>(
                         let export_name = match &namespace.name {
                             ModuleExportName::Ident(i) => i.sym.clone(),
                             ModuleExportName::Str(s) => s.value.clone(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => unreachable!(),
                         };
                         p.emit_err(namespace.span, SyntaxError::ExportExpectFrom(export_name));
                     }
@@ -697,6 +702,8 @@ fn parse_export<'a, P: Parser<'a>>(
                         }
                         _ => {}
                     },
+                    #[cfg(swc_ast_unknown)]
+                    _ => (),
                 }
             }
 
diff --git a/crates/swc_ecma_lexer/src/common/parser/pat.rs b/crates/swc_ecma_lexer/src/common/parser/pat.rs
index c99ee929d652..66d97a3538c4 100644
--- a/crates/swc_ecma_lexer/src/common/parser/pat.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/pat.rs
@@ -51,11 +51,15 @@ fn pat_is_valid_argument_in_strict<'a>(p: &mut impl Parser<'a>, pat: &Pat) {
                             p.emit_strict_mode_err(key.span, SyntaxError::EvalAndArgumentsInStrict)
                         }
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => (),
                 }
             }
         }
         Pat::Assign(a) => pat_is_valid_argument_in_strict(p, &a.left),
         Pat::Invalid(_) | Pat::Expr(_) => (),
+        #[cfg(swc_ast_unknown)]
+        _ => (),
     }
 }
 
@@ -175,6 +179,8 @@ fn reparse_expr_as_pat_inner<'a>(
                         Box::new(reparse_expr_as_pat(p, pat_ty, left.into())?)
                     }
                     AssignTarget::Pat(pat) => pat.into(),
+                    #[cfg(swc_ast_unknown)]
+                    _ => unreachable!(),
                 },
                 right,
             }
@@ -250,6 +256,9 @@ fn reparse_expr_as_pat_inner<'a>(
                                     type_ann: None,
                                 }))
                             }
+
+                            #[cfg(swc_ast_unknown)]
+                            _ => unreachable!(),
                         }
                     })
                     .collect::<PResult<_>>()?,
diff --git a/crates/swc_ecma_lexer/src/common/parser/stmt.rs b/crates/swc_ecma_lexer/src/common/parser/stmt.rs
index ba4bcad6ad68..1e92f9858b32 100644
--- a/crates/swc_ecma_lexer/src/common/parser/stmt.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/stmt.rs
@@ -783,6 +783,8 @@ fn parse_catch_param<'a, P: Parser<'a>>(p: &mut P) -> PResult<Option<Pat>> {
                 Pat::Assign(..) => {}
                 Pat::Invalid(_) => {}
                 Pat::Expr(_) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => {}
             }
         }
         expect!(p, &P::Token::RPAREN);
diff --git a/crates/swc_ecma_lexer/src/common/parser/typescript.rs b/crates/swc_ecma_lexer/src/common/parser/typescript.rs
index 98cc59d4f64b..6ca9d4bd5656 100644
--- a/crates/swc_ecma_lexer/src/common/parser/typescript.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/typescript.rs
@@ -1770,6 +1770,8 @@ fn parse_ts_type_operator<'a, P: Parser<'a>>(
         TsTypeOperatorOp::Unique => expect!(p, &P::Token::UNIQUE),
         TsTypeOperatorOp::KeyOf => expect!(p, &P::Token::KEYOF),
         TsTypeOperatorOp::ReadOnly => expect!(p, &P::Token::READONLY),
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
 
     let type_ann = parse_ts_type_operator_or_higher(p)?;
diff --git a/crates/swc_ecma_lexer/src/common/parser/util.rs b/crates/swc_ecma_lexer/src/common/parser/util.rs
index 66a98e871c72..ea2a02856f74 100644
--- a/crates/swc_ecma_lexer/src/common/parser/util.rs
+++ b/crates/swc_ecma_lexer/src/common/parser/util.rs
@@ -59,6 +59,8 @@ pub fn get_qualified_jsx_name(name: &JSXElementName) -> Atom {
                 member.prop.sym
             )
             .into(),
+            #[cfg(swc_ast_unknown)]
+            _ => unreachable!(),
         }
     }
     match *name {
@@ -69,6 +71,8 @@ pub fn get_qualified_jsx_name(name: &JSXElementName) -> Atom {
         JSXElementName::JSXMemberExpr(JSXMemberExpr {
             ref obj, ref prop, ..
         }) => format!("{}.{}", get_qualified_obj_name(obj), prop.sym).into(),
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
 }
 
@@ -83,6 +87,8 @@ pub fn make_decl_declare(mut decl: Decl) -> Decl {
         Decl::TsEnum(ref mut e) => e.declare = true,
         Decl::TsModule(ref mut m) => m.declare = true,
         Decl::Using(..) => unreachable!("Using is not a valid declaration for `declare` keyword"),
+        #[cfg(swc_ast_unknown)]
+        _ => unreachable!(),
     }
     decl
 }
diff --git a/crates/swc_ecma_lexer/src/parser/mod.rs b/crates/swc_ecma_lexer/src/parser/mod.rs
index a8eafa497232..51481a5f1eab 100644
--- a/crates/swc_ecma_lexer/src/parser/mod.rs
+++ b/crates/swc_ecma_lexer/src/parser/mod.rs
@@ -251,6 +251,8 @@ impl<I: Tokens<TokenAndSpan>> Parser<I> {
     above"
                     ),
                     ModuleItem::Stmt(stmt) => stmt,
+                    #[cfg(swc_ast_unknown)]
+                    _ => unreachable!(),
                 })
                 .collect();
             Program::Script(Script {
diff --git a/crates/swc_ecma_lints/Cargo.toml b/crates/swc_ecma_lints/Cargo.toml
index 49fc253fc28b..57793e717f63 100644
--- a/crates/swc_ecma_lints/Cargo.toml
+++ b/crates/swc_ecma_lints/Cargo.toml
@@ -12,6 +12,9 @@ version     = "22.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 auto_impl   = { workspace = true }
 dashmap     = { workspace = true }
@@ -42,7 +45,6 @@ testing                   = { version = "15.0.0", path = "../testing" }
 [features]
 non_critical_lints = []
 
-
 [[bench]]
 harness = false
 name    = "all"
diff --git a/crates/swc_ecma_lints/src/rules/critical_rules.rs b/crates/swc_ecma_lints/src/rules/critical_rules.rs
index 5abea66d21f6..5f3430551a91 100644
--- a/crates/swc_ecma_lints/src/rules/critical_rules.rs
+++ b/crates/swc_ecma_lints/src/rules/critical_rules.rs
@@ -628,6 +628,8 @@ impl Visit for CriticalRules {
         let orig = match &s.orig {
             ModuleExportName::Ident(ident) => ident,
             ModuleExportName::Str(..) => return,
+            #[cfg(swc_ast_unknown)]
+            _ => return,
         };
         self.add_export(exported.as_ref().unwrap_or(&orig));
     }
@@ -636,6 +638,8 @@ impl Visit for CriticalRules {
         match &s.name {
             ModuleExportName::Ident(name) => self.add_export(name),
             ModuleExportName::Str(..) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         };
     }
 
@@ -689,6 +693,8 @@ impl Visit for ConstCollector<'_> {
             | ImportSpecifier::Namespace(ImportStarAsSpecifier { local, .. }) => {
                 self.import_binding.insert(local.to_id(), local.span);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 
diff --git a/crates/swc_ecma_lints/src/rules/mod.rs b/crates/swc_ecma_lints/src/rules/mod.rs
index 8ecf067f6aef..e1292d106f0a 100644
--- a/crates/swc_ecma_lints/src/rules/mod.rs
+++ b/crates/swc_ecma_lints/src/rules/mod.rs
@@ -231,6 +231,8 @@ where
         match program {
             Program::Module(m) => self.0.lint_module(m),
             Program::Script(s) => self.0.lint_script(s),
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
diff --git a/crates/swc_ecma_minifier/Cargo.toml b/crates/swc_ecma_minifier/Cargo.toml
index 9975e090d897..62bb32338472 100644
--- a/crates/swc_ecma_minifier/Cargo.toml
+++ b/crates/swc_ecma_minifier/Cargo.toml
@@ -16,6 +16,9 @@ version       = "33.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 # This enables global concurrent mode
 concurrent = [
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/evaluate.rs b/crates/swc_ecma_minifier/src/compress/optimize/evaluate.rs
index 0e98eaf0d6ff..6764c6245219 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/evaluate.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/evaluate.rs
@@ -380,6 +380,8 @@ impl Optimizer<'_> {
                                     },
                                     _ => return,
                                 },
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             }
                         }
 
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/iife.rs b/crates/swc_ecma_minifier/src/compress/optimize/iife.rs
index 661d38e40081..3ae5cac8fcca 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/iife.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/iife.rs
@@ -35,6 +35,8 @@ impl Optimizer<'_> {
         let callee = match &mut expr.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if let Expr::Fn(..) = callee {
@@ -66,6 +68,8 @@ impl Optimizer<'_> {
         let callee = match &mut test_call.callee {
             Callee::Super(_) | Callee::Import(_) => return false,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         match callee {
@@ -153,6 +157,8 @@ impl Optimizer<'_> {
         let callee = match &mut e.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if let Some(scope) = find_scope(self.data, callee) {
@@ -328,6 +334,8 @@ impl Optimizer<'_> {
         let callee = match &mut e.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         match find_body(callee) {
@@ -441,6 +449,8 @@ impl Optimizer<'_> {
         let callee = match &call.callee {
             Callee::Super(_) | Callee::Import(_) => return false,
             Callee::Expr(e) => &**e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if self.ctx.bit_ctx.contains(BitCtx::DontInvokeIife) {
@@ -560,6 +570,8 @@ impl Optimizer<'_> {
         let callee = match &mut call.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         match callee {
@@ -627,6 +639,8 @@ impl Optimizer<'_> {
                         *e = *Expr::from_exprs(exprs);
                         e.visit_mut_with(self);
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
             Expr::Fn(f) => {
@@ -691,6 +705,8 @@ impl Optimizer<'_> {
         let callee = match &mut call.callee {
             Callee::Super(_) | Callee::Import(_) => return None,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         match callee {
@@ -709,6 +725,8 @@ impl Optimizer<'_> {
                             call.span,
                         )
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
             Expr::Fn(f) => {
@@ -1311,6 +1329,8 @@ impl Optimizer<'_> {
                             }
                             _ => return false,
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -1360,6 +1380,8 @@ fn find_body(callee: &mut Expr) -> Option<Either<&mut BlockStmt, &mut Expr>> {
         Expr::Arrow(e) => match &mut *e.body {
             BlockStmtOrExpr::BlockStmt(b) => Some(Either::Left(b)),
             BlockStmtOrExpr::Expr(b) => Some(Either::Right(&mut **b)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         },
         Expr::Fn(e) => Some(Either::Left(e.function.body.as_mut().unwrap())),
         _ => None,
@@ -1453,6 +1475,8 @@ impl Visit for DeclVisitor {
             Decl::Var(var_decl) => var_decl.decls.len(),
             Decl::Using(using_decl) => using_decl.decls.len(),
             Decl::TsInterface(_) | Decl::TsTypeAlias(_) | Decl::TsEnum(_) | Decl::TsModule(_) => 0,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
     }
 
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/inline.rs b/crates/swc_ecma_minifier/src/compress/optimize/inline.rs
index 710a70a5be5a..6273a5e28c9c 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/inline.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/inline.rs
@@ -978,6 +978,8 @@ fn is_arrow_simple_enough_for_copy(e: &ArrowExpr) -> Option<u8> {
     match &*e.body {
         BlockStmtOrExpr::BlockStmt(s) => is_block_stmt_of_fn_simple_enough_for_copy(s),
         BlockStmtOrExpr::Expr(e) => is_arrow_body_simple_enough_for_copy(e),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/loops.rs b/crates/swc_ecma_minifier/src/compress/optimize/loops.rs
index c11009082176..4ec242fa0da4 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/loops.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/loops.rs
@@ -34,6 +34,8 @@ impl Optimizer<'_> {
                     expr,
                 }
                 .into(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }));
         self.prepend_stmts.extend(f.test.take().map(|expr| {
@@ -94,6 +96,8 @@ impl Optimizer<'_> {
                                     expr,
                                 }
                                 .into(),
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             }
                         }));
                         self.prepend_stmts.push(
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/mod.rs b/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
index 4b703a403763..ea52199abfa4 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/mod.rs
@@ -802,6 +802,8 @@ impl Optimizer<'_> {
                 Expr::Arrow(f) => match &*f.body {
                     BlockStmtOrExpr::BlockStmt(body) => body.stmts.is_empty(),
                     BlockStmtOrExpr::Expr(_) => false,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
                 _ => false,
             } && args.is_empty() =>
@@ -1078,6 +1080,8 @@ impl Optimizer<'_> {
                                         );
                                     }
                                     PropName::BigInt(_) => {}
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 }
 
                                 exprs.extend(self.ignore_return_value(&mut value).map(Box::new));
@@ -1094,6 +1098,8 @@ impl Optimizer<'_> {
                                     );
                                 }
                                 PropName::BigInt(_) => {}
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             },
 
                             Prop::Assign(mut prop) => {
@@ -1103,7 +1109,11 @@ impl Optimizer<'_> {
                             }
 
                             Prop::Shorthand(_) => {}
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -1513,6 +1523,8 @@ impl VisitMut for Optimizer<'_> {
                         ..Default::default()
                     }));
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -1602,6 +1614,8 @@ impl VisitMut for Optimizer<'_> {
                 self.drop_else_token(&mut n.stmts);
             }
             BlockStmtOrExpr::Expr(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -1610,6 +1624,8 @@ impl VisitMut for Optimizer<'_> {
         let is_this_undefined = match &e.callee {
             Callee::Super(_) | Callee::Import(_) => false,
             Callee::Expr(e) => e.is_ident(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         {
             let ctx = self
@@ -1622,6 +1638,8 @@ impl VisitMut for Optimizer<'_> {
                         || match &e.callee {
                             Callee::Super(_) | Callee::Import(_) => false,
                             Callee::Expr(callee) => is_callee_this_aware(callee),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
                 )
                 .with(BitCtx::IsLhsOfAssign, false)
@@ -1762,6 +1780,8 @@ impl VisitMut for Optimizer<'_> {
                 self.drop_unused_params(&mut f.function.params);
             }
             DefaultDecl::TsInterfaceDecl(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         n.visit_mut_children_with(self);
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/props.rs b/crates/swc_ecma_minifier/src/compress/optimize/props.rs
index 67e635a13d65..d8a354d2e9cc 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/props.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/props.rs
@@ -82,6 +82,8 @@ impl Optimizer<'_> {
                     let prop = match prop {
                         PropOrSpread::Spread(_) => return None,
                         PropOrSpread::Prop(prop) => prop,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     match &**prop {
@@ -141,6 +143,8 @@ impl Optimizer<'_> {
                 let prop = match prop {
                     PropOrSpread::Spread(_) => unreachable!(),
                     PropOrSpread::Prop(prop) => prop,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
 
                 let value = match &mut **prop {
@@ -244,6 +248,8 @@ fn is_expr_fine_for_hoist_props(value: &Expr) -> bool {
                 Prop::KeyValue(p) => is_expr_fine_for_hoist_props(&p.value),
                 _ => false,
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }),
 
         _ => false,
@@ -292,7 +298,11 @@ impl Optimizer<'_> {
                     Prop::Getter(p) => prop_name_eq(&p.key, &key.sym),
                     Prop::Setter(p) => prop_name_eq(&p.key, &key.sym),
                     Prop::Method(p) => prop_name_eq(&p.key, &key.sym),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             })
             .count()
             != 1;
@@ -322,7 +332,11 @@ impl Optimizer<'_> {
                 Prop::Getter(p) => p.key.is_computed(),
                 Prop::Setter(p) => p.key.is_computed(),
                 Prop::Method(p) => p.key.is_computed(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }) {
             log_abort!("Property accesses should not be inlined to preserve side effects");
             return;
@@ -348,7 +362,11 @@ impl Optimizer<'_> {
                     Prop::Getter(_) => {}
                     Prop::Setter(_) => {}
                     Prop::Method(_) => {}
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
     }
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs b/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
index 83a2ab135615..07eb4dffd03d 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
@@ -1015,6 +1015,8 @@ impl Optimizer<'_> {
                                 return false;
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -1022,6 +1024,8 @@ impl Optimizer<'_> {
             }
             Pat::Assign(..) => false,
             Pat::Expr(e) => self.is_skippable_for_seq(a, e),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -1304,6 +1308,8 @@ impl Optimizer<'_> {
                                 return false;
                             }
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -1419,6 +1425,8 @@ impl Optimizer<'_> {
 
                     false
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
 
             Expr::Invalid(_) => true,
@@ -1434,6 +1442,9 @@ impl Optimizer<'_> {
             | Expr::TsAs(_)
             | Expr::TsInstantiation(_)
             | Expr::TsSatisfies(_) => false,
+
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -1968,6 +1979,8 @@ impl Optimizer<'_> {
                                 Prop::Getter(prop) => prop.key.as_mut_computed(),
                                 Prop::Setter(prop) => prop.key.as_mut_computed(),
                                 Prop::Method(prop) => prop.key.as_mut_computed(),
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             };
 
                             if let Some(computed) = computed {
@@ -2013,6 +2026,8 @@ impl Optimizer<'_> {
                                 _ => {}
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/unused.rs b/crates/swc_ecma_minifier/src/compress/optimize/unused.rs
index 3e4de5a3f7cd..0f4fb1eec544 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/unused.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/unused.rs
@@ -302,7 +302,11 @@ impl Optimizer<'_> {
 
                         Prop::Setter(_) => true,
                         Prop::Method(_) => false,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     },
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 });
             }
 
@@ -448,6 +452,8 @@ impl Optimizer<'_> {
                             }
                         }
                         ObjectPatProp::Rest(_) => {}
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
 
                     true
@@ -604,6 +610,9 @@ impl Optimizer<'_> {
             Decl::TsInterface(_) | Decl::TsTypeAlias(_) | Decl::TsEnum(_) | Decl::TsModule(_) => {
                 // Nothing to do. We might change this to unreachable!()
             }
+
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -894,7 +903,11 @@ impl Optimizer<'_> {
                 Prop::Getter(p) => p.key.is_computed(),
                 Prop::Setter(p) => p.key.is_computed(),
                 Prop::Method(p) => p.key.is_computed(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }) {
             return None;
         }
@@ -921,6 +934,8 @@ impl Optimizer<'_> {
             let prop = match prop {
                 PropOrSpread::Spread(_) => return None,
                 PropOrSpread::Prop(prop) => prop,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
 
             match &**prop {
@@ -1016,6 +1031,8 @@ impl Optimizer<'_> {
             PropName::Num(..) => true,
             PropName::Computed(..) => true,
             PropName::BigInt(..) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         let len = obj.props.len();
@@ -1032,7 +1049,11 @@ impl Optimizer<'_> {
                 Prop::Getter(p) => should_preserve(&p.key),
                 Prop::Setter(p) => should_preserve(&p.key),
                 Prop::Method(p) => should_preserve(&p.key),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         });
 
         if obj.props.len() != len {
diff --git a/crates/swc_ecma_minifier/src/compress/optimize/util.rs b/crates/swc_ecma_minifier/src/compress/optimize/util.rs
index 7d2d1f0d3614..fc231fc13dc7 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/util.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/util.rs
@@ -805,11 +805,15 @@ pub fn get_ids_of_pat(pat: &Pat) -> Vec<Id> {
                             ids.push(assign_pat_prop.key.to_id())
                         }
                         ObjectPatProp::Rest(rest_pat) => append(&rest_pat.arg, ids),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
             }
             Pat::Assign(assign_pat) => append(&assign_pat.left, ids),
             Pat::Invalid(_) | Pat::Expr(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
diff --git a/crates/swc_ecma_minifier/src/compress/pure/arrows.rs b/crates/swc_ecma_minifier/src/compress/pure/arrows.rs
index 5b6f22b2e79d..de43003d1feb 100644
--- a/crates/swc_ecma_minifier/src/compress/pure/arrows.rs
+++ b/crates/swc_ecma_minifier/src/compress/pure/arrows.rs
@@ -56,6 +56,8 @@ impl Pure<'_> {
                 }
             }
             BlockStmtOrExpr::Expr(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
diff --git a/crates/swc_ecma_minifier/src/compress/pure/evaluate.rs b/crates/swc_ecma_minifier/src/compress/pure/evaluate.rs
index afb961fe2203..b046b84b8eea 100644
--- a/crates/swc_ecma_minifier/src/compress/pure/evaluate.rs
+++ b/crates/swc_ecma_minifier/src/compress/pure/evaluate.rs
@@ -210,6 +210,8 @@ impl Pure<'_> {
         let callee = match &mut call.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if let Expr::Member(MemberExpr {
@@ -367,6 +369,8 @@ impl Pure<'_> {
         let callee = match &mut call.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(e) => &mut **e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if let Expr::Member(MemberExpr {
@@ -443,6 +447,8 @@ impl Pure<'_> {
                     }
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -734,6 +740,8 @@ impl Pure<'_> {
                     *e = *Expr::undefined(*span);
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -840,6 +848,8 @@ impl Pure<'_> {
                 },
                 _ => return,
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         let new_val = match &*method {
diff --git a/crates/swc_ecma_minifier/src/compress/pure/member_expr.rs b/crates/swc_ecma_minifier/src/compress/pure/member_expr.rs
index 365ea5843632..85fe377e6eb1 100644
--- a/crates/swc_ecma_minifier/src/compress/pure/member_expr.rs
+++ b/crates/swc_ecma_minifier/src/compress/pure/member_expr.rs
@@ -216,6 +216,9 @@ fn does_key_exist(key: &str, props: &Vec<PropOrSpread>) -> Option<bool> {
                         return Some(true);
                     }
                 }
+
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
 
             _ => {
diff --git a/crates/swc_ecma_minifier/src/compress/pure/misc.rs b/crates/swc_ecma_minifier/src/compress/pure/misc.rs
index e6df994f8148..19d67023fcd8 100644
--- a/crates/swc_ecma_minifier/src/compress/pure/misc.rs
+++ b/crates/swc_ecma_minifier/src/compress/pure/misc.rs
@@ -188,6 +188,8 @@ impl Pure<'_> {
             BinaryOp::NullishCoalescing => {
                 op!("??=")
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         e.op = op;
@@ -278,6 +280,8 @@ impl Pure<'_> {
                     }
                     _ => false,
                 },
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -458,6 +462,8 @@ impl Pure<'_> {
         let callee = match &mut call.callee {
             Callee::Super(_) | Callee::Import(_) => return,
             Callee::Expr(callee) => &mut **callee,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         let separator = if call.args.is_empty() {
@@ -2029,6 +2035,8 @@ impl Pure<'_> {
 
                             _ => {}
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -2143,6 +2151,8 @@ impl Pure<'_> {
                                 return;
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     },
                     _ => {}
                 }
@@ -2290,6 +2300,8 @@ impl Pure<'_> {
                                 Prop::Getter(..) | Prop::Setter(..) => false,
                                 _ => true,
                             },
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }) {
                             let mut exprs = collect_exprs_from_object(object);
                             exprs.push(prop.expr.take());
diff --git a/crates/swc_ecma_minifier/src/compress/pure/mod.rs b/crates/swc_ecma_minifier/src/compress/pure/mod.rs
index a7cf4ebd8703..7f043c39e884 100644
--- a/crates/swc_ecma_minifier/src/compress/pure/mod.rs
+++ b/crates/swc_ecma_minifier/src/compress/pure/mod.rs
@@ -259,6 +259,8 @@ impl VisitMut for Pure<'_> {
         match body {
             BlockStmtOrExpr::BlockStmt(b) => self.optimize_fn_stmts(&mut b.stmts),
             BlockStmtOrExpr::Expr(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         self.optimize_arrow_body(body);
diff --git a/crates/swc_ecma_minifier/src/compress/pure/unsafes.rs b/crates/swc_ecma_minifier/src/compress/pure/unsafes.rs
index ccdf412c2102..1e16acb90217 100644
--- a/crates/swc_ecma_minifier/src/compress/pure/unsafes.rs
+++ b/crates/swc_ecma_minifier/src/compress/pure/unsafes.rs
@@ -16,6 +16,8 @@ impl Pure<'_> {
                 Expr::Ident(Ident { sym, .. }) if &**sym == "Symbol" => {}
                 _ => return,
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         e.args
diff --git a/crates/swc_ecma_minifier/src/program_data.rs b/crates/swc_ecma_minifier/src/program_data.rs
index fe64a935de58..724c12838653 100644
--- a/crates/swc_ecma_minifier/src/program_data.rs
+++ b/crates/swc_ecma_minifier/src/program_data.rs
@@ -695,6 +695,8 @@ impl ProgramData {
                         self.simple_assign_target_contains_unresolved(left)
                     }
                     AssignTarget::Pat(_) => false,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }) || self.contains_unresolved(right)
             }
             Expr::Cond(CondExpr {
@@ -770,6 +772,8 @@ impl ProgramData {
 
                 false
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -808,6 +812,8 @@ impl ProgramData {
             | SimpleAssignTarget::TsTypeAssertion(..)
             | SimpleAssignTarget::TsInstantiation(..) => false,
             SimpleAssignTarget::Invalid(..) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_ecma_minifier/src/util/mod.rs b/crates/swc_ecma_minifier/src/util/mod.rs
index fa88ae849a90..363697add5cf 100644
--- a/crates/swc_ecma_minifier/src/util/mod.rs
+++ b/crates/swc_ecma_minifier/src/util/mod.rs
@@ -66,6 +66,8 @@ impl ModuleItemExt for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(v) => Ok(v),
             ModuleItem::Stmt(v) => Err(v),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -73,6 +75,8 @@ impl ModuleItemExt for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(v) => Ok(v),
             ModuleItem::Stmt(v) => Err(v),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -84,6 +88,8 @@ impl ModuleItemExt for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(v) => Ok(v),
             ModuleItem::Stmt(v) => Err(v),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_ecma_minifier/src/util/size.rs b/crates/swc_ecma_minifier/src/util/size.rs
index 8bd68491c181..e34cb21659ff 100644
--- a/crates/swc_ecma_minifier/src/util/size.rs
+++ b/crates/swc_ecma_minifier/src/util/size.rs
@@ -18,6 +18,8 @@ impl Size for Lit {
             Lit::BigInt(i) => i.value.size(),
             Lit::Regex(r) => r.exp.len(),
             Lit::JSXText(s) => s.value.len(),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -30,6 +32,8 @@ impl Size for UnaryOp {
             TypeOf => 7,
             Void => 5,
             Delete => 7,
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -50,6 +54,8 @@ impl Size for BinaryOp {
 
             In => 4,
             InstanceOf => 12,
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -169,6 +175,8 @@ impl SizeWithCtxt for Expr {
 
                     p + a + 2 + e.size(unresolved)
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => TODO,
             },
             Expr::Fn(_) => TODO,
             Expr::Class(_) => TODO,
@@ -176,6 +184,8 @@ impl SizeWithCtxt for Expr {
             Expr::MetaProp(m) => match m.kind {
                 MetaPropKind::NewTarget => 10,
                 MetaPropKind::ImportMeta => 11,
+                #[cfg(swc_ast_unknown)]
+                _ => TODO,
             },
             Expr::PrivateName(p) => p.size(),
             Expr::OptChain(p) => match &*p.base {
@@ -183,6 +193,8 @@ impl SizeWithCtxt for Expr {
                 OptChainBase::Call(c) => {
                     1 + c.callee.size(unresolved) + c.args.size(unresolved) + 2
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => TODO,
             },
 
             Expr::Paren(p) => 2 + p.expr.size(unresolved),
@@ -199,6 +211,8 @@ impl SizeWithCtxt for Expr {
             Expr::TsAs(_) => TODO,
             Expr::TsInstantiation(_) => TODO,
             Expr::TsSatisfies(_) => TODO,
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -219,6 +233,8 @@ impl SizeWithCtxt for Callee {
             Callee::Super(_) => 5,
             Callee::Import(_) => 6,
             Callee::Expr(e) => e.size(unresolved),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -243,6 +259,8 @@ impl SizeWithCtxt for MemberProp {
             MemberProp::Ident(id) => 1 + id.sym.len(),
             MemberProp::PrivateName(priv_name) => 1 + priv_name.size(),
             MemberProp::Computed(c) => 2 + c.expr.size(unresolved),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -252,6 +270,8 @@ impl SizeWithCtxt for SuperProp {
         match self {
             SuperProp::Ident(id) => 1 + id.sym.len(),
             SuperProp::Computed(c) => 2 + c.expr.size(unresolved),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -266,6 +286,8 @@ impl SizeWithCtxt for Pat {
             Pat::Assign(a) => a.left.size(unresolved) + 1 + a.right.size(unresolved),
             Pat::Invalid(_) => 0,
             Pat::Expr(e) => e.size(unresolved),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -275,6 +297,8 @@ impl SizeWithCtxt for AssignTarget {
         match self {
             AssignTarget::Simple(e) => e.size(unresolved),
             AssignTarget::Pat(p) => p.size(unresolved),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -297,6 +321,8 @@ impl SizeWithCtxt for SimpleAssignTarget {
                 OptChainBase::Call(c) => {
                     1 + c.callee.size(unresolved) + c.args.size(unresolved) + 2
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => TODO,
             },
             SimpleAssignTarget::TsAs(_)
             | SimpleAssignTarget::TsSatisfies(_)
@@ -304,6 +330,8 @@ impl SizeWithCtxt for SimpleAssignTarget {
             | SimpleAssignTarget::TsTypeAssertion(_)
             | SimpleAssignTarget::TsInstantiation(_)
             | SimpleAssignTarget::Invalid(_) => TODO,
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -314,6 +342,8 @@ impl SizeWithCtxt for AssignTargetPat {
             AssignTargetPat::Array(a) => 2 + a.elems.size(unresolved),
             AssignTargetPat::Object(o) => 2 + o.props.size(unresolved),
             AssignTargetPat::Invalid(_) => unreachable!(),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -326,6 +356,8 @@ impl SizeWithCtxt for PropName {
             PropName::Num(n) => n.value.size(),
             PropName::Computed(c) => 2 + c.expr.size(unresolved),
             PropName::BigInt(n) => n.value.size(),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -338,6 +370,8 @@ impl SizeWithCtxt for ObjectPatProp {
                 a.key.sym.len() + a.value.as_ref().map_or(0, |v| v.size(unresolved) + 1)
             }
             ObjectPatProp::Rest(r) => 3 + r.arg.size(unresolved),
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
@@ -356,7 +390,11 @@ impl SizeWithCtxt for PropOrSpread {
                 Prop::Getter(_) => TODO,
                 Prop::Setter(_) => TODO,
                 Prop::Method(_) => TODO,
+                #[cfg(swc_ast_unknown)]
+                _ => TODO,
             },
+            #[cfg(swc_ast_unknown)]
+            _ => TODO,
         }
     }
 }
diff --git a/crates/swc_ecma_parser/Cargo.toml b/crates/swc_ecma_parser/Cargo.toml
index 31806ab5898d..41413bad83f8 100644
--- a/crates/swc_ecma_parser/Cargo.toml
+++ b/crates/swc_ecma_parser/Cargo.toml
@@ -16,6 +16,9 @@ version       = "24.0.2"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 # Used for debugging
 debug         = ["tracing-spans"]
diff --git a/crates/swc_ecma_parser/src/parser/jsx/mod.rs b/crates/swc_ecma_parser/src/parser/jsx/mod.rs
index a8faa76a8fe5..a9248fa435ff 100644
--- a/crates/swc_ecma_parser/src/parser/jsx/mod.rs
+++ b/crates/swc_ecma_parser/src/parser/jsx/mod.rs
@@ -82,6 +82,8 @@ impl<I: Tokens> Parser<I> {
         let mut node = match self.parse_jsx_tag_name()? {
             JSXAttrName::Ident(i) => JSXElementName::Ident(i.into()),
             JSXAttrName::JSXNamespacedName(i) => JSXElementName::JSXNamespacedName(i),
+            #[cfg(swc_ast_unknown)]
+            _ => unreachable!(),
         };
         while self.input_mut().eat(&Token::Dot) {
             self.input_mut().scan_jsx_identifier();
diff --git a/crates/swc_ecma_parser/src/parser/mod.rs b/crates/swc_ecma_parser/src/parser/mod.rs
index 8d0ae6b29893..576799159269 100644
--- a/crates/swc_ecma_parser/src/parser/mod.rs
+++ b/crates/swc_ecma_parser/src/parser/mod.rs
@@ -295,6 +295,8 @@ impl<I: Tokens> Parser<I> {
                 .map(|item| match item {
                     ModuleItem::ModuleDecl(_) => unreachable!("Module is handled above"),
                     ModuleItem::Stmt(stmt) => stmt,
+                    #[cfg(swc_ast_unknown)]
+                    _ => unreachable!(),
                 })
                 .collect();
             Program::Script(Script {
diff --git a/crates/swc_ecma_quote/Cargo.toml b/crates/swc_ecma_quote/Cargo.toml
index 11755d2839b7..3645ea16e077 100644
--- a/crates/swc_ecma_quote/Cargo.toml
+++ b/crates/swc_ecma_quote/Cargo.toml
@@ -11,6 +11,9 @@ version       = "24.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 swc_common            = { version = "14.0.4", path = "../swc_common" }
 swc_ecma_ast          = { version = "15.0.0", path = "../swc_ecma_ast" }
diff --git a/crates/swc_ecma_quote_macros/Cargo.toml b/crates/swc_ecma_quote_macros/Cargo.toml
index 8816fce0f77f..390336b1ad24 100644
--- a/crates/swc_ecma_quote_macros/Cargo.toml
+++ b/crates/swc_ecma_quote_macros/Cargo.toml
@@ -12,6 +12,9 @@ version       = "24.0.0"
 bench      = false
 proc-macro = true
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 anyhow      = { workspace = true }
 proc-macro2 = { workspace = true }
diff --git a/crates/swc_ecma_quote_macros/src/ast/enums.rs b/crates/swc_ecma_quote_macros/src/ast/enums.rs
index a04ce8421802..e2d5ff48b97f 100644
--- a/crates/swc_ecma_quote_macros/src/ast/enums.rs
+++ b/crates/swc_ecma_quote_macros/src/ast/enums.rs
@@ -11,6 +11,8 @@ macro_rules! impl_simple_enum {
                              swc_core::ecma::ast::$E::$v
                         ),
                     )*
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
         }
diff --git a/crates/swc_ecma_quote_macros/src/ast/mod.rs b/crates/swc_ecma_quote_macros/src/ast/mod.rs
index 08d68bdd0a37..28d5b162388d 100644
--- a/crates/swc_ecma_quote_macros/src/ast/mod.rs
+++ b/crates/swc_ecma_quote_macros/src/ast/mod.rs
@@ -25,6 +25,8 @@ macro_rules! impl_enum_body {
                     )
                 },
             )*
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     };
 }
diff --git a/crates/swc_ecma_regexp_ast/src/lib.rs b/crates/swc_ecma_regexp_ast/src/lib.rs
index df083f2936d9..42c2cef25497 100644
--- a/crates/swc_ecma_regexp_ast/src/lib.rs
+++ b/crates/swc_ecma_regexp_ast/src/lib.rs
@@ -30,7 +30,7 @@ pub struct Alternative {
 }
 
 /// Single unit of [`Alternative`], containing various kinds.
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, EqIgnoreSpan, Is)]
 pub enum Term {
     // Assertion
@@ -219,7 +219,7 @@ pub enum CharacterClassContentsKind {
     Subtraction = 2,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, EqIgnoreSpan, Is)]
 pub enum CharacterClassContents {
     #[tag("CharacterClassRange")]
diff --git a/crates/swc_ecma_transforms/Cargo.toml b/crates/swc_ecma_transforms/Cargo.toml
index 4dd3ba64f557..af5c834557af 100644
--- a/crates/swc_ecma_transforms/Cargo.toml
+++ b/crates/swc_ecma_transforms/Cargo.toml
@@ -16,6 +16,9 @@ version       = "34.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 compat = ["swc_ecma_transforms_compat"]
 concurrent = [
diff --git a/crates/swc_ecma_transforms_base/Cargo.toml b/crates/swc_ecma_transforms_base/Cargo.toml
index 3e268e2bfd88..fa397ab82767 100644
--- a/crates/swc_ecma_transforms_base/Cargo.toml
+++ b/crates/swc_ecma_transforms_base/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 concurrent         = ["concurrent-renamer", "par-iter", "swc_ecma_utils/concurrent"]
 concurrent-renamer = ["par-iter"]
diff --git a/crates/swc_ecma_transforms_base/src/ext.rs b/crates/swc_ecma_transforms_base/src/ext.rs
index ac705ef8c156..549e1df636d9 100644
--- a/crates/swc_ecma_transforms_base/src/ext.rs
+++ b/crates/swc_ecma_transforms_base/src/ext.rs
@@ -27,6 +27,8 @@ impl AsOptExpr for Callee {
         match self {
             Callee::Super(_) | Callee::Import(_) => None,
             Callee::Expr(e) => Some(e),
+            #[cfg(swc_ast_unknown)]
+            _ => None,
         }
     }
 
@@ -34,6 +36,8 @@ impl AsOptExpr for Callee {
         match self {
             Callee::Super(_) | Callee::Import(_) => None,
             Callee::Expr(e) => Some(e),
+            #[cfg(swc_ast_unknown)]
+            _ => None,
         }
     }
 }
diff --git a/crates/swc_ecma_transforms_base/src/fixer.rs b/crates/swc_ecma_transforms_base/src/fixer.rs
index 8418785ced4f..ce428bb4b757 100644
--- a/crates/swc_ecma_transforms_base/src/fixer.rs
+++ b/crates/swc_ecma_transforms_base/src/fixer.rs
@@ -156,6 +156,8 @@ impl VisitMut for Fixer<'_> {
         let lhs_expr = match &mut expr.left {
             AssignTarget::Simple(e) => Some(e),
             AssignTarget::Pat(..) => None,
+            #[cfg(swc_ast_unknown)]
+            _ => None,
         };
 
         if let Some(e) = lhs_expr
@@ -203,6 +205,8 @@ impl VisitMut for Fixer<'_> {
                     }));
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 
diff --git a/crates/swc_ecma_transforms_base/src/rename/analyer_and_collector.rs b/crates/swc_ecma_transforms_base/src/rename/analyer_and_collector.rs
index f45075fac9d3..cf04f4c24bfa 100644
--- a/crates/swc_ecma_transforms_base/src/rename/analyer_and_collector.rs
+++ b/crates/swc_ecma_transforms_base/src/rename/analyer_and_collector.rs
@@ -100,6 +100,8 @@ impl Visit for AnalyzerAndCollector {
         match node.body.as_ref() {
             BlockStmtOrExpr::BlockStmt(n) => n.visit_children_with(self),
             BlockStmtOrExpr::Expr(n) => n.visit_with(self),
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
 
         self.analyzer.is_pat_decl = old_analyzer_is_pat_decl;
@@ -229,6 +231,8 @@ impl Visit for AnalyzerAndCollector {
                 f.visit_with(self);
             }
             DefaultDecl::TsInterfaceDecl(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => {}
         }
     }
 
diff --git a/crates/swc_ecma_transforms_base/src/rename/analyzer/mod.rs b/crates/swc_ecma_transforms_base/src/rename/analyzer/mod.rs
index dc42882d8bf2..904f1c0b34b9 100644
--- a/crates/swc_ecma_transforms_base/src/rename/analyzer/mod.rs
+++ b/crates/swc_ecma_transforms_base/src/rename/analyzer/mod.rs
@@ -167,6 +167,8 @@ impl Analyzer {
                 self.add_usage(orig.to_id());
             }
             ModuleExportName::Str(..) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => {}
         };
     }
 
diff --git a/crates/swc_ecma_transforms_base/src/rename/mod.rs b/crates/swc_ecma_transforms_base/src/rename/mod.rs
index 87fb3e4ece4c..e5618c1af68f 100644
--- a/crates/swc_ecma_transforms_base/src/rename/mod.rs
+++ b/crates/swc_ecma_transforms_base/src/rename/mod.rs
@@ -382,6 +382,8 @@ where
             DefaultDecl::TsInterfaceDecl(n) => {
                 n.visit_mut_children_with(self);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 
diff --git a/crates/swc_ecma_transforms_base/src/rename/ops.rs b/crates/swc_ecma_transforms_base/src/rename/ops.rs
index ddecc6e71407..0c0e535b3118 100644
--- a/crates/swc_ecma_transforms_base/src/rename/ops.rs
+++ b/crates/swc_ecma_transforms_base/src/rename/ops.rs
@@ -168,6 +168,8 @@ where
                         }
                     }
                     ModuleExportName::Str(_) => {}
+                    #[cfg(swc_ast_unknown)]
+                    _ => {}
                 }
 
                 s.exported = Some(exported);
diff --git a/crates/swc_ecma_transforms_base/src/resolver/mod.rs b/crates/swc_ecma_transforms_base/src/resolver/mod.rs
index 06067f8c9f61..cc82f5a18aab 100644
--- a/crates/swc_ecma_transforms_base/src/resolver/mod.rs
+++ b/crates/swc_ecma_transforms_base/src/resolver/mod.rs
@@ -563,6 +563,8 @@ impl VisitMut for Resolver<'_> {
                     child.strict_mode = old_strict_mode;
                 }
                 BlockStmtOrExpr::Expr(e) => e.visit_mut_with(child),
+                #[cfg(swc_ast_unknown)]
+                _ => (),
             }
 
             e.return_type.visit_mut_with(child);
@@ -710,6 +712,8 @@ impl VisitMut for Resolver<'_> {
                 ParamOrTsParamProp::Param(p) => {
                     p.decorators.visit_mut_with(self);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => (),
             }
         }
 
@@ -723,6 +727,8 @@ impl VisitMut for Resolver<'_> {
                     .filter(|p| match p {
                         ParamOrTsParamProp::TsParamProp(_) => false,
                         ParamOrTsParamProp::Param(p) => !p.pat.is_rest(),
+                        #[cfg(swc_ast_unknown)]
+                        _ => false,
                     })
                     .flat_map(find_pat_ids::<_, Id>);
 
@@ -787,6 +793,8 @@ impl VisitMut for Resolver<'_> {
                     self.try_resolving_as_type(orig);
                 }
                 ModuleExportName::Str(_) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => {}
             }
         }
     }
@@ -1018,6 +1026,8 @@ impl VisitMut for Resolver<'_> {
             | ImportSpecifier::Namespace(..)
             | ImportSpecifier::Default(..) => s.visit_mut_children_with(self),
             ImportSpecifier::Named(s) => s.local.visit_mut_with(self),
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
 
         self.ident_type = old;
@@ -1253,6 +1263,8 @@ impl VisitMut for Resolver<'_> {
             let member_names = decl.members.iter().filter_map(|m| match &m.id {
                 TsEnumMemberId::Ident(id) => Some((id.sym.clone(), DeclKind::Lexical)),
                 TsEnumMemberId::Str(_) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => None,
             });
             child.current.declared_symbols.extend(member_names);
 
@@ -1384,6 +1396,8 @@ impl VisitMut for Resolver<'_> {
                 self.modify(i, DeclKind::Lexical);
             }
             TsModuleName::Str(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => {}
         }
 
         self.with_child(ScopeKind::Block, |child| {
diff --git a/crates/swc_ecma_transforms_base/src/scope.rs b/crates/swc_ecma_transforms_base/src/scope.rs
index 0e8ea17fe0a0..d15e2a2d8910 100644
--- a/crates/swc_ecma_transforms_base/src/scope.rs
+++ b/crates/swc_ecma_transforms_base/src/scope.rs
@@ -29,6 +29,8 @@ impl From<VarDeclKind> for DeclKind {
         match kind {
             VarDeclKind::Const | VarDeclKind::Let => Self::Lexical,
             VarDeclKind::Var => Self::Var,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_ecma_transforms_classes/Cargo.toml b/crates/swc_ecma_transforms_classes/Cargo.toml
index 66bd7cbf4ef5..e4b60f401b8c 100644
--- a/crates/swc_ecma_transforms_classes/Cargo.toml
+++ b/crates/swc_ecma_transforms_classes/Cargo.toml
@@ -11,6 +11,9 @@ version       = "27.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 swc_common               = { version = "14.0.4", path = "../swc_common" }
 swc_ecma_ast             = { version = "15.0.0", path = "../swc_ecma_ast" }
diff --git a/crates/swc_ecma_transforms_classes/src/super_field.rs b/crates/swc_ecma_transforms_classes/src/super_field.rs
index 5023f9a74e7f..0551f2933b69 100644
--- a/crates/swc_ecma_transforms_classes/src/super_field.rs
+++ b/crates/swc_ecma_transforms_classes/src/super_field.rs
@@ -323,6 +323,8 @@ impl SuperFieldAccessFolder<'_> {
                 prop: match prop {
                     SuperProp::Ident(i) => MemberProp::Ident(i),
                     SuperProp::Computed(c) => MemberProp::Computed(c),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
             }
             .into()
@@ -369,6 +371,8 @@ impl SuperFieldAccessFolder<'_> {
                 prop: match prop {
                     SuperProp::Ident(i) => MemberProp::Ident(i),
                     SuperProp::Computed(c) => MemberProp::Computed(c),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
             };
 
@@ -496,5 +500,7 @@ fn prop_arg(prop: SuperProp) -> Expr {
         })
         .into(),
         SuperProp::Computed(c) => *c.expr,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
diff --git a/crates/swc_ecma_transforms_compat/Cargo.toml b/crates/swc_ecma_transforms_compat/Cargo.toml
index 9531a21b20fa..951cf3d1f8bb 100644
--- a/crates/swc_ecma_transforms_compat/Cargo.toml
+++ b/crates/swc_ecma_transforms_compat/Cargo.toml
@@ -12,6 +12,9 @@ version       = "30.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 concurrent = [
   "swc_ecma_transforms_base/concurrent",
diff --git a/crates/swc_ecma_transforms_module/Cargo.toml b/crates/swc_ecma_transforms_module/Cargo.toml
index d6dc9382ef84..00b5777b4144 100644
--- a/crates/swc_ecma_transforms_module/Cargo.toml
+++ b/crates/swc_ecma_transforms_module/Cargo.toml
@@ -12,6 +12,9 @@ version       = "30.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 Inflector  = { workspace = true }
 anyhow     = { workspace = true }
diff --git a/crates/swc_ecma_transforms_module/src/amd.rs b/crates/swc_ecma_transforms_module/src/amd.rs
index d1a4de75b58f..018b0a5f8e76 100644
--- a/crates/swc_ecma_transforms_module/src/amd.rs
+++ b/crates/swc_ecma_transforms_module/src/amd.rs
@@ -298,6 +298,8 @@ where
                         _ => return,
                     },
                     MemberProp::PrivateName(..) => return,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
                 self.found_import_meta = true;
 
@@ -324,6 +326,8 @@ where
                                 }
                             }
                             MemberProp::PrivateName(..) => unreachable!(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
                     }
                     // module.uri.split("/").pop()
@@ -348,6 +352,8 @@ where
                                 }
                             }
                             MemberProp::PrivateName(..) => unreachable!(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
 
                         *n = n.take().as_call(n.span(), vec![quote_str!(".").as_arg()]);
diff --git a/crates/swc_ecma_transforms_module/src/common_js.rs b/crates/swc_ecma_transforms_module/src/common_js.rs
index b244605e2c67..5ae4ab524f74 100644
--- a/crates/swc_ecma_transforms_module/src/common_js.rs
+++ b/crates/swc_ecma_transforms_module/src/common_js.rs
@@ -219,6 +219,8 @@ impl VisitMut for Cjs {
                         _ => return,
                     },
                     MemberProp::PrivateName(..) => return,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
 
                 match p {
diff --git a/crates/swc_ecma_transforms_module/src/module_decl_strip.rs b/crates/swc_ecma_transforms_module/src/module_decl_strip.rs
index e52f6202d87b..54cc9c87ae35 100644
--- a/crates/swc_ecma_transforms_module/src/module_decl_strip.rs
+++ b/crates/swc_ecma_transforms_module/src/module_decl_strip.rs
@@ -79,6 +79,8 @@ impl VisitMut for ModuleDeclStrip {
                                 list.extend(fn_expr.as_fn_decl().map(From::from))
                             }
                             DefaultDecl::TsInterfaceDecl(_) => continue,
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
                         ModuleDecl::ExportDefaultExpr(..) => {
                             list.extend(self.export_default.take().map(From::from))
@@ -87,8 +89,12 @@ impl VisitMut for ModuleDeclStrip {
                         ModuleDecl::TsImportEquals(..) => continue,
                         ModuleDecl::TsExportAssignment(..) => continue,
                         ModuleDecl::TsNamespaceExport(..) => continue,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
         }
 
@@ -180,6 +186,8 @@ impl VisitMut for ModuleDeclStrip {
                         ModuleExportName::Str(_) => {
                             unreachable!(r#"`export {{ "foo" }}` without src is invalid"#)
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     if let Some(exported) = exported {
@@ -190,6 +198,8 @@ impl VisitMut for ModuleDeclStrip {
                             ModuleExportName::Str(Str { span, value, .. }) => {
                                 (value, (span, Default::default()))
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         };
 
                         (export_name, ExportItem::new(export_name_span, orig))
@@ -200,6 +210,8 @@ impl VisitMut for ModuleDeclStrip {
                         )
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }))
         }
     }
@@ -242,6 +254,8 @@ impl VisitMut for ModuleDeclStrip {
                 );
             }
             DefaultDecl::TsInterfaceDecl(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -427,6 +441,8 @@ impl From<ImportSpecifier> for LinkSpecifier {
                 let imported = imported.map(|e| match e {
                     ModuleExportName::Ident(Ident { sym, .. }) => sym,
                     ModuleExportName::Str(Str { value, .. }) => value,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 });
 
                 Self::ImportNamed {
@@ -471,6 +487,8 @@ impl From<ExportSpecifier> for LinkSpecifier {
                     | ModuleExportName::Str(Str {
                         span, value: sym, ..
                     }) => (sym, (span, SyntaxContext::empty().apply_mark(Mark::new()))),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
 
                 let exported = exported.map(|exported| match exported {
@@ -478,6 +496,8 @@ impl From<ExportSpecifier> for LinkSpecifier {
                     | ModuleExportName::Str(Str {
                         span, value: sym, ..
                     }) => (sym, (span, SyntaxContext::empty().apply_mark(Mark::new()))),
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 });
 
                 match (&*orig.0, orig.1) {
diff --git a/crates/swc_ecma_transforms_module/src/system_js.rs b/crates/swc_ecma_transforms_module/src/system_js.rs
index 1b4972b2c8ed..043defe2b8e0 100644
--- a/crates/swc_ecma_transforms_module/src/system_js.rs
+++ b/crates/swc_ecma_transforms_module/src/system_js.rs
@@ -142,6 +142,8 @@ impl SystemJs {
                     _ => assign_expr.into(),
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -705,6 +707,8 @@ impl Fold for SystemJs {
                                         .into_stmt(),
                                     );
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             }
                         }
 
@@ -765,6 +769,8 @@ impl Fold for SystemJs {
                                         export_values
                                             .push(quote_ident!(source_alias.clone()).into());
                                     }
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 }
 
                                 self.add_module_item_meta(ModuleItemMeta {
@@ -950,6 +956,8 @@ impl Fold for SystemJs {
                     },
                     _ => execute_stmts.push(stmt),
                 },
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -1129,6 +1137,8 @@ fn get_module_export_name(module_export_name: &ModuleExportName) -> Id {
     match &module_export_name {
         ModuleExportName::Ident(ident) => ident.to_id(),
         ModuleExportName::Str(s) => (s.value.clone(), SyntaxContext::empty()),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -1137,6 +1147,8 @@ fn get_module_export_expr(module_export_name: &ModuleExportName) -> Expr {
     match &module_export_name {
         ModuleExportName::Ident(ident) => ident.clone().into(),
         ModuleExportName::Str(s) => Lit::Str(quote_str!(s.value.clone())).into(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -1148,5 +1160,7 @@ fn get_module_export_member_prop(module_export_name: &ModuleExportName) -> Membe
             span: s.span,
             expr: Lit::Str(quote_str!(s.value.clone())).into(),
         }),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
diff --git a/crates/swc_ecma_transforms_optimization/Cargo.toml b/crates/swc_ecma_transforms_optimization/Cargo.toml
index 781adf2ea37d..bcecbeefd388 100644
--- a/crates/swc_ecma_transforms_optimization/Cargo.toml
+++ b/crates/swc_ecma_transforms_optimization/Cargo.toml
@@ -13,6 +13,9 @@ version       = "29.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 concurrent = ["swc_common/concurrent", "swc_ecma_transforms_base/concurrent"]
 debug      = []
diff --git a/crates/swc_ecma_transforms_optimization/src/const_modules.rs b/crates/swc_ecma_transforms_optimization/src/const_modules.rs
index 6cdc454856a5..07ddbe040fdb 100644
--- a/crates/swc_ecma_transforms_optimization/src/const_modules.rs
+++ b/crates/swc_ecma_transforms_optimization/src/const_modules.rs
@@ -109,6 +109,8 @@ impl VisitMut for ConstModules {
                                     .map(|m| match m {
                                         ModuleExportName::Ident(id) => &id.sym,
                                         ModuleExportName::Str(s) => &s.value,
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unable to access unknown nodes"),
                                     })
                                     .unwrap_or(&s.local.sym);
                                 let value = entry.get(imported).cloned().unwrap_or_else(|| {
@@ -136,6 +138,8 @@ impl VisitMut for ConstModules {
                                     });
                                 self.scope.imported.insert(imported.clone(), value);
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         };
                     }
 
@@ -181,6 +185,8 @@ impl VisitMut for ConstModules {
                             _ => return,
                         },
                         MemberProp::PrivateName(..) => return,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     let value = self
diff --git a/crates/swc_ecma_transforms_optimization/src/simplify/branch/mod.rs b/crates/swc_ecma_transforms_optimization/src/simplify/branch/mod.rs
index cfbd5697bf85..42163d610c9f 100644
--- a/crates/swc_ecma_transforms_optimization/src/simplify/branch/mod.rs
+++ b/crates/swc_ecma_transforms_optimization/src/simplify/branch/mod.rs
@@ -1615,6 +1615,8 @@ fn ignore_result(e: Box<Expr>, drop_str_lit: bool, ctx: ExprCtx) -> Option<Box<E
                         Some(v)
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             });
 
             if props.is_empty() {
diff --git a/crates/swc_ecma_transforms_optimization/src/simplify/const_propagation.rs b/crates/swc_ecma_transforms_optimization/src/simplify/const_propagation.rs
index a9b2a97486c8..ab2f663559d2 100644
--- a/crates/swc_ecma_transforms_optimization/src/simplify/const_propagation.rs
+++ b/crates/swc_ecma_transforms_optimization/src/simplify/const_propagation.rs
@@ -48,6 +48,8 @@ impl VisitMut for ConstPropagation<'_> {
         let id = match &n.orig {
             ModuleExportName::Ident(ident) => ident.to_id(),
             ModuleExportName::Str(..) => return,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         if let Some(expr) = self.scope.find_var(&id) {
             if let Expr::Ident(v) = &**expr {
@@ -68,8 +70,12 @@ impl VisitMut for ConstPropagation<'_> {
                     }
                 }
                 ModuleExportName::Str(..) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Some(ModuleExportName::Str(..)) => {}
+            #[cfg(swc_ast_unknown)]
+            Some(_) => panic!("unable to access unknown nodes"),
             None => {}
         }
     }
diff --git a/crates/swc_ecma_transforms_optimization/src/simplify/dce/mod.rs b/crates/swc_ecma_transforms_optimization/src/simplify/dce/mod.rs
index 1315ef7f7ca3..19384b044f54 100644
--- a/crates/swc_ecma_transforms_optimization/src/simplify/dce/mod.rs
+++ b/crates/swc_ecma_transforms_optimization/src/simplify/dce/mod.rs
@@ -859,6 +859,8 @@ impl VisitMut for TreeShaker {
                         | ClassMember::Empty(_)
                         | ClassMember::Constructor(_)
                         | ClassMember::PrivateMethod(_) => true,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     })
                 {
                     debug!("Dropping class `{}` as it's not used", c.ident);
@@ -928,6 +930,8 @@ impl VisitMut for TreeShaker {
                                             Prop::KeyValue(p) => p.value.is_ident(),
                                             _ => false,
                                         },
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unable to access unknown nodes"),
                                     }) {
                                         self.changed = true;
                                         debug!("Dropping a wrapped esm");
@@ -947,6 +951,8 @@ impl VisitMut for TreeShaker {
             if match &a.left {
                 AssignTarget::Simple(l) => l.is_invalid(),
                 AssignTarget::Pat(l) => l.is_invalid(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             } {
                 *n = *a.right.take();
             }
@@ -971,6 +977,8 @@ impl VisitMut for TreeShaker {
             ForHead::Pat(v) => {
                 v.visit_mut_with(self);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -987,6 +995,8 @@ impl VisitMut for TreeShaker {
                 ImportSpecifier::Named(l) => &l.local,
                 ImportSpecifier::Default(l) => &l.local,
                 ImportSpecifier::Namespace(l) => &l.local,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
 
             if self.can_drop_binding(local.to_id(), false) {
@@ -1190,6 +1200,8 @@ impl VisitMut for TreeShaker {
             VarDeclOrExpr::Expr(v) => {
                 v.visit_mut_with(self);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
diff --git a/crates/swc_ecma_transforms_optimization/src/simplify/expr/mod.rs b/crates/swc_ecma_transforms_optimization/src/simplify/expr/mod.rs
index fff50a77de56..eeaf05163d78 100644
--- a/crates/swc_ecma_transforms_optimization/src/simplify/expr/mod.rs
+++ b/crates/swc_ecma_transforms_optimization/src/simplify/expr/mod.rs
@@ -163,6 +163,8 @@ impl VisitMut for SimplifyExpr {
                     }
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         self.in_callee = false;
@@ -330,6 +332,8 @@ impl VisitMut for SimplifyExpr {
                                         &**p,
                                         Prop::Shorthand(_) | Prop::KeyValue(_) | Prop::Method(_)
                                     ),
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 }) {
                                     ps.push(PropOrSpread::Spread(SpreadElement {
                                         dot3_token,
@@ -632,6 +636,8 @@ fn get_key_value(key: &str, props: &mut Vec<PropOrSpread>) -> Option<Box<Expr>>
         let prop = match prop {
             PropOrSpread::Prop(x) => &mut **x,
             PropOrSpread::Spread(_) => unreachable!(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         match prop {
diff --git a/crates/swc_ecma_transforms_optimization/src/simplify/inlining/mod.rs b/crates/swc_ecma_transforms_optimization/src/simplify/inlining/mod.rs
index d1692ab94cca..917cc754ee3c 100644
--- a/crates/swc_ecma_transforms_optimization/src/simplify/inlining/mod.rs
+++ b/crates/swc_ecma_transforms_optimization/src/simplify/inlining/mod.rs
@@ -138,6 +138,8 @@ impl VisitMut for Inlining<'_> {
                     AssignTarget::Pat(p) => {
                         p.visit_mut_with(self);
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
 
diff --git a/crates/swc_ecma_transforms_proposal/Cargo.toml b/crates/swc_ecma_transforms_proposal/Cargo.toml
index cd7e1fe76f43..e401470accd8 100644
--- a/crates/swc_ecma_transforms_proposal/Cargo.toml
+++ b/crates/swc_ecma_transforms_proposal/Cargo.toml
@@ -12,6 +12,9 @@ version       = "27.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 default      = []
 multi-module = []
diff --git a/crates/swc_ecma_transforms_proposal/src/decorator_impl.rs b/crates/swc_ecma_transforms_proposal/src/decorator_impl.rs
index ef8339da53fb..e0424e8242b9 100644
--- a/crates/swc_ecma_transforms_proposal/src/decorator_impl.rs
+++ b/crates/swc_ecma_transforms_proposal/src/decorator_impl.rs
@@ -925,12 +925,16 @@ impl VisitMut for DecoratorPass {
                                     MethodKind::Method => 7,
                                     MethodKind::Setter => 9,
                                     MethodKind::Getter => 8,
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 }
                             } else {
                                 match p.kind {
                                     MethodKind::Method => 2,
                                     MethodKind::Setter => 4,
                                     MethodKind::Getter => 3,
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 }
                             }
                             .as_arg(),
@@ -1014,6 +1018,8 @@ impl VisitMut for DecoratorPass {
                         ..Default::default()
                     });
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
     }
@@ -1068,6 +1074,8 @@ impl VisitMut for DecoratorPass {
                                     .into(),
                                 }
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
                         value: if accessor.decorators.is_empty() {
                             accessor.value
@@ -1170,6 +1178,8 @@ impl VisitMut for DecoratorPass {
                                 Some(private_ident!(format!("_set_{}", field_name_like))),
                             ),
                             Key::Public(_) => Default::default(),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         };
 
                         let initialize_init = {
@@ -1287,6 +1297,8 @@ impl VisitMut for DecoratorPass {
                                             Some(name.as_arg()),
                                         ]
                                     }
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 },
                             }
                             .as_arg()
@@ -1374,6 +1386,8 @@ impl VisitMut for DecoratorPass {
                             new.push(ClassMember::Method(getter));
                             new.push(ClassMember::Method(setter));
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
 
                     continue;
@@ -1448,6 +1462,8 @@ impl VisitMut for DecoratorPass {
                             (false, MethodKind::Setter) => 4,
                             (true, MethodKind::Getter) => 8,
                             (false, MethodKind::Getter) => 3,
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         }
                         .as_arg(),
                     ),
@@ -1630,6 +1646,8 @@ impl VisitMut for DecoratorPass {
                 .position(|module_item| match module_item {
                     ModuleItem::Stmt(stmt) => !is_maybe_branch_directive(stmt),
                     ModuleItem::ModuleDecl(_) => true,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 })
                 .unwrap_or(0);
             insert_builder.push_front(
diff --git a/crates/swc_ecma_transforms_proposal/src/decorators/legacy/metadata.rs b/crates/swc_ecma_transforms_proposal/src/decorators/legacy/metadata.rs
index f70cc2050475..c4c948f02b60 100644
--- a/crates/swc_ecma_transforms_proposal/src/decorators/legacy/metadata.rs
+++ b/crates/swc_ecma_transforms_proposal/src/decorators/legacy/metadata.rs
@@ -39,6 +39,8 @@ impl VisitMut for ParamMetadata {
                                 decorators.push(new_dec);
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -170,6 +172,8 @@ impl VisitMut for Metadata<'_> {
                                 let ann = match &p.param {
                                     TsParamPropParam::Ident(i) => i.type_ann.as_deref(),
                                     TsParamPropParam::Assign(a) => get_type_ann_of_pat(&a.left),
+                                    #[cfg(swc_ast_unknown)]
+                                    _ => panic!("unable to access unknown nodes"),
                                 };
                                 Some(serialize_type(self.class_name, ann).as_arg())
                             }
@@ -177,6 +181,8 @@ impl VisitMut for Metadata<'_> {
                                 serialize_type(self.class_name, get_type_ann_of_pat(&p.pat))
                                     .as_arg(),
                             ),
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         })
                         .collect(),
                 }
@@ -208,6 +214,8 @@ impl VisitMut for Metadata<'_> {
                     get_type_ann_of_pat(&m.function.params[0].pat),
                 )
                 .as_arg(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
 
             let dec = self.create_metadata_design_decorator("design:type", type_arg);
@@ -542,6 +550,8 @@ fn serialize_type(class_name: Option<&Ident>, param: Option<&TsTypeAnn>) -> Expr
                 TsUnionOrIntersectionType::TsIntersectionType(ty) => {
                     serialize_type_list(class_name, &ty.types)
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
 
             TsType::TsConditionalType(ty) => {
@@ -575,6 +585,8 @@ fn ts_entity_to_member_expr(type_name: &TsEntityName) -> Expr {
             .into()
         }
         TsEntityName::Ident(i) => i.clone().with_pos(BytePos::DUMMY, BytePos::DUMMY).into(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -587,6 +599,8 @@ fn get_type_ann_of_pat(p: &Pat) -> Option<&TsTypeAnn> {
         Pat::Assign(p) => get_type_ann_of_pat(&p.left),
         Pat::Invalid(_) => None,
         Pat::Expr(_) => None,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
diff --git a/crates/swc_ecma_transforms_proposal/src/decorators/mod.rs b/crates/swc_ecma_transforms_proposal/src/decorators/mod.rs
index 895dcfcb1566..6f200a351de7 100644
--- a/crates/swc_ecma_transforms_proposal/src/decorators/mod.rs
+++ b/crates/swc_ecma_transforms_proposal/src/decorators/mod.rs
@@ -366,6 +366,8 @@ impl Decorators {
                                         MethodKind::Method => "method",
                                         MethodKind::Getter => "get",
                                         MethodKind::Setter => "set",
+                                        #[cfg(swc_ast_unknown)]
+                                        _ => panic!("unable to access unknown nodes"),
                                     }
                                 )))),
                             },
diff --git a/crates/swc_ecma_transforms_proposal/src/export_default_from.rs b/crates/swc_ecma_transforms_proposal/src/export_default_from.rs
index 489b42da9055..ab92b841e89b 100644
--- a/crates/swc_ecma_transforms_proposal/src/export_default_from.rs
+++ b/crates/swc_ecma_transforms_proposal/src/export_default_from.rs
@@ -71,6 +71,8 @@ impl VisitMut for ExportDefaultFrom {
                                     export_specifiers.push(s);
                                 }
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => (),
                         }
                     }
 
diff --git a/crates/swc_ecma_transforms_react/Cargo.toml b/crates/swc_ecma_transforms_react/Cargo.toml
index 86917f539a08..38155cf94932 100644
--- a/crates/swc_ecma_transforms_react/Cargo.toml
+++ b/crates/swc_ecma_transforms_react/Cargo.toml
@@ -12,6 +12,9 @@ version       = "30.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 concurrent = ["swc_common/concurrent"]
 default    = ["serde-impl"]
diff --git a/crates/swc_ecma_transforms_react/src/display_name/mod.rs b/crates/swc_ecma_transforms_react/src/display_name/mod.rs
index e631ae335e73..02c18625ee97 100644
--- a/crates/swc_ecma_transforms_react/src/display_name/mod.rs
+++ b/crates/swc_ecma_transforms_react/src/display_name/mod.rs
@@ -85,20 +85,22 @@ impl VisitMut for DisplayName {
         prop.visit_mut_children_with(self);
 
         if let Prop::KeyValue(KeyValueProp { key, value }) = prop {
-            value.visit_mut_with(&mut Folder {
-                name: Some(match key {
-                    PropName::Ident(ref i) => Lit::Str(Str {
-                        span: i.span,
-                        raw: None,
-                        value: i.sym.clone(),
-                    })
-                    .into(),
-                    PropName::Str(ref s) => Lit::Str(s.clone()).into(),
-                    PropName::Num(ref n) => Lit::Num(n.clone()).into(),
-                    PropName::BigInt(ref b) => Lit::BigInt(b.clone()).into(),
-                    PropName::Computed(ref c) => c.expr.clone(),
-                }),
-            });
+            let name = match key {
+                PropName::Ident(ref i) => Lit::Str(Str {
+                    span: i.span,
+                    raw: None,
+                    value: i.sym.clone(),
+                })
+                .into(),
+                PropName::Str(ref s) => Lit::Str(s.clone()).into(),
+                PropName::Num(ref n) => Lit::Num(n.clone()).into(),
+                PropName::BigInt(ref b) => Lit::BigInt(b.clone()).into(),
+                PropName::Computed(ref c) => c.expr.clone(),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
+            };
+
+            value.visit_mut_with(&mut Folder { name: Some(name) });
         }
     }
 
@@ -148,6 +150,8 @@ fn is_create_class_call(call: &CallExpr) -> bool {
     let callee = match &call.callee {
         Callee::Super(_) | Callee::Import(_) => return false,
         Callee::Expr(callee) => &**callee,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     };
 
     match callee {
@@ -198,8 +202,12 @@ fn is_key_display_name(prop: &PropOrSpread) -> bool {
                 PropName::Num(..) => false,
                 PropName::BigInt(..) => false,
                 PropName::Computed(..) => false,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Prop::Assign(..) => unreachable!("invalid syntax"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         },
         _ => false,
         // TODO(kdy1): maybe.. handle spread
diff --git a/crates/swc_ecma_transforms_react/src/jsx/mod.rs b/crates/swc_ecma_transforms_react/src/jsx/mod.rs
index b54cfffad945..cff10525a483 100644
--- a/crates/swc_ecma_transforms_react/src/jsx/mod.rs
+++ b/crates/swc_ecma_transforms_react/src/jsx/mod.rs
@@ -798,6 +798,8 @@ where
                                         Prop::KeyValue(KeyValueProp { key, value }),
                                     )));
                                 }
+                                #[cfg(swc_ast_unknown)]
+                                _ => panic!("unable to access unknown nodes"),
                             }
                         }
                         JSXAttrOrSpread::SpreadElement(attr) => match *attr.expr {
@@ -808,6 +810,8 @@ where
                                 props_obj.props.push(PropOrSpread::Spread(attr));
                             }
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
 
@@ -964,6 +968,8 @@ where
                 spread: Some(span),
                 expr,
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         })
     }
 
@@ -989,6 +995,8 @@ where
                         _ => props.push(PropOrSpread::Spread(spread)),
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -1026,6 +1034,8 @@ where
                     span: _,
                     expr: JSXExpr::JSXEmptyExpr(_),
                 }) => unreachable!("attr_to_prop(JSXEmptyExpr)"),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             })
             .unwrap_or_else(|| {
                 Lit::Bool(Bool {
@@ -1337,6 +1347,8 @@ where
                             prop: MemberProp::Ident(e.prop),
                         }
                         .into(),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     })
                     .into()
                 }
@@ -1347,6 +1359,8 @@ where
                 }
                 .into()
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -1375,6 +1389,8 @@ fn to_prop_name(n: JSXAttrName) -> PropName {
                 value: value.into(),
             })
         }
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -1495,9 +1511,13 @@ fn jsx_attr_value_to_expr(v: JSXAttrValue) -> Option<Box<Expr>> {
         JSXAttrValue::JSXExprContainer(e) => match e.expr {
             JSXExpr::JSXEmptyExpr(_) => None?,
             JSXExpr::Expr(e) => e,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         },
         JSXAttrValue::JSXElement(e) => e.into(),
         JSXAttrValue::JSXFragment(f) => f.into(),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     })
 }
 
diff --git a/crates/swc_ecma_transforms_react/src/jsx/static_check.rs b/crates/swc_ecma_transforms_react/src/jsx/static_check.rs
index a1f6221f361a..889ecf67372e 100644
--- a/crates/swc_ecma_transforms_react/src/jsx/static_check.rs
+++ b/crates/swc_ecma_transforms_react/src/jsx/static_check.rs
@@ -13,6 +13,8 @@ pub(super) fn should_use_create_element(attrs: &[JSXAttrOrSpread]) -> bool {
                 JSXAttrOrSpread::JSXAttr(attr) => match &attr.name {
                     JSXAttrName::Ident(i) => i.sym == "key",
                     JSXAttrName::JSXNamespacedName(_) => false,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
                 _ => false,
             }
diff --git a/crates/swc_ecma_transforms_react/src/pure_annotations/mod.rs b/crates/swc_ecma_transforms_react/src/pure_annotations/mod.rs
index 98fc33b81143..723cfb75328f 100644
--- a/crates/swc_ecma_transforms_react/src/pure_annotations/mod.rs
+++ b/crates/swc_ecma_transforms_react/src/pure_annotations/mod.rs
@@ -54,6 +54,8 @@ where
                                 Some(ModuleExportName::Ident(imported)) => imported.sym.clone(),
                                 Some(ModuleExportName::Str(..)) => named.local.sym.clone(),
                                 None => named.local.sym.clone(),
+                                #[cfg(swc_ast_unknown)]
+                                Some(_) => continue,
                             };
                             self.imports.insert(named.local.to_id(), (src, imported));
                         }
@@ -64,6 +66,8 @@ where
                         ImportSpecifier::Namespace(ns) => {
                             self.imports.insert(ns.local.to_id(), (src, atom!("*")));
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => (),
                     }
                 }
             }
diff --git a/crates/swc_ecma_transforms_react/src/refresh/hook.rs b/crates/swc_ecma_transforms_react/src/refresh/hook.rs
index b88c89a18b53..4b4a45232e6b 100644
--- a/crates/swc_ecma_transforms_react/src/refresh/hook.rs
+++ b/crates/swc_ecma_transforms_react/src/refresh/hook.rs
@@ -368,6 +368,8 @@ fn collect_hooks_arrow(body: &mut BlockStmtOrExpr, cm: &SourceMap) -> Option<Hoo
                 None
             }
         }
+        #[cfg(swc_ast_unknown)]
+        _ => None,
     }
 }
 
diff --git a/crates/swc_ecma_transforms_typescript/Cargo.toml b/crates/swc_ecma_transforms_typescript/Cargo.toml
index e3d9f337b097..b4d2bdc47047 100644
--- a/crates/swc_ecma_transforms_typescript/Cargo.toml
+++ b/crates/swc_ecma_transforms_typescript/Cargo.toml
@@ -12,6 +12,9 @@ version       = "30.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 concurrent = ["swc_common/concurrent"]
 
diff --git a/crates/swc_ecma_transforms_typescript/src/strip_import_export.rs b/crates/swc_ecma_transforms_typescript/src/strip_import_export.rs
index 8912667ca27c..a2ad8165d93c 100644
--- a/crates/swc_ecma_transforms_typescript/src/strip_import_export.rs
+++ b/crates/swc_ecma_transforms_typescript/src/strip_import_export.rs
@@ -139,6 +139,8 @@ fn get_module_ident(ts_entity_name: &TsEntityName) -> &Ident {
             get_module_ident(&ts_qualified_name.left)
         }
         TsEntityName::Ident(ident) => ident,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -240,6 +242,8 @@ impl Visit for DeclareCollect {
                         self.id_type.insert(namespace.local.to_id());
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => (),
             });
     }
 
@@ -341,6 +345,8 @@ impl VisitMut for StripImportExport {
 
                         self.usage_info.has_usage(&id)
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 });
 
                 self.import_not_used_as_values == ImportsNotUsedAsValues::Preserve
@@ -368,6 +374,8 @@ impl VisitMut for StripImportExport {
                     ExportSpecifier::Named(ExportNamedSpecifier { is_type_only, .. }) => {
                         !is_type_only
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 });
 
                 !specifiers.is_empty()
diff --git a/crates/swc_ecma_transforms_typescript/src/strip_type.rs b/crates/swc_ecma_transforms_typescript/src/strip_type.rs
index c0b099278e2e..c7439b481045 100644
--- a/crates/swc_ecma_transforms_typescript/src/strip_type.rs
+++ b/crates/swc_ecma_transforms_typescript/src/strip_type.rs
@@ -292,6 +292,8 @@ impl IsConcrete for TsNamespaceBody {
                 ts_module_block.body.iter().any(|item| item.is_concrete())
             }
             Self::TsNamespaceDecl(ts_namespace_decl) => ts_namespace_decl.body.is_concrete(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -301,6 +303,8 @@ impl IsConcrete for ModuleItem {
         match self {
             Self::ModuleDecl(module_decl) => module_decl.is_concrete(),
             Self::Stmt(stmt) => stmt.is_concrete(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -317,6 +321,8 @@ impl IsConcrete for ModuleDecl {
             Self::TsImportEquals(ts_import_equals) => !ts_import_equals.is_type_only,
             Self::TsExportAssignment(..) => true,
             Self::TsNamespaceExport(..) => false,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -328,6 +334,8 @@ impl IsConcrete for Decl {
             Self::Fn(r#fn) => r#fn.function.body.is_some(),
             Self::Class(..) | Self::Var(..) | Self::Using(..) | Self::TsEnum(..) => true,
             Self::TsModule(ts_module) => ts_module.is_concrete(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -338,6 +346,8 @@ impl IsConcrete for DefaultDecl {
             Self::Class(_) => true,
             Self::Fn(r#fn) => r#fn.function.body.is_some(),
             Self::TsInterfaceDecl(..) => false,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -367,6 +377,8 @@ impl IsDeclare for Decl {
             Decl::TsInterface(_) | Decl::TsTypeAlias(_) => true,
             Decl::TsEnum(ts_enum) => ts_enum.declare,
             Decl::TsModule(ts_module) => ts_module.declare || ts_module.global,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_ecma_transforms_typescript/src/transform.rs b/crates/swc_ecma_transforms_typescript/src/transform.rs
index 50f0df8ae21d..630c017be143 100644
--- a/crates/swc_ecma_transforms_typescript/src/transform.rs
+++ b/crates/swc_ecma_transforms_typescript/src/transform.rs
@@ -331,6 +331,8 @@ impl VisitMut for Transform {
                                 id,
                             )
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
 
                     self.in_class_prop.push(id);
@@ -344,6 +346,8 @@ impl VisitMut for Transform {
                     .into();
                 }
                 ParamOrTsParamProp::Param(..) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             });
 
         node.params.visit_mut_children_with(self);
@@ -863,6 +867,8 @@ impl Transform {
                 return Self::transform_ts_module_block(id, ts_module_block);
             }
             TsNamespaceBody::TsNamespaceDecl(ts_namespace_decl) => ts_namespace_decl,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         debug_assert!(!declare);
@@ -1017,6 +1023,8 @@ impl Transform {
                                 .emit();
                             });
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
                 item => {
@@ -1187,6 +1195,8 @@ impl Transform {
                 }
                 .into()
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -1328,6 +1338,8 @@ impl Transform {
                                 }
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
                 ModuleItem::ModuleDecl(ModuleDecl::TsExportAssignment(..)) => {
@@ -1540,5 +1552,7 @@ fn get_member_key(prop: &MemberProp) -> Option<Atom> {
             _ => None,
         },
         MemberProp::PrivateName(_) => None,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
diff --git a/crates/swc_ecma_transforms_typescript/src/typescript.rs b/crates/swc_ecma_transforms_typescript/src/typescript.rs
index 685f8c36acf3..4cfc340ee715 100644
--- a/crates/swc_ecma_transforms_typescript/src/typescript.rs
+++ b/crates/swc_ecma_transforms_typescript/src/typescript.rs
@@ -130,6 +130,8 @@ impl EsModuleDecl for ModuleDecl {
             ModuleDecl::TsImportEquals(..)
             | ModuleDecl::TsExportAssignment(..)
             | ModuleDecl::TsNamespaceExport(..) => false,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_ecma_usage_analyzer/Cargo.toml b/crates/swc_ecma_usage_analyzer/Cargo.toml
index 646ead7ae336..f9f726234e63 100644
--- a/crates/swc_ecma_usage_analyzer/Cargo.toml
+++ b/crates/swc_ecma_usage_analyzer/Cargo.toml
@@ -16,6 +16,9 @@ version       = "22.0.1"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 # This enables global concurrent mode
 concurrent    = ["swc_common/concurrent", "indexmap/rayon"]
diff --git a/crates/swc_ecma_usage_analyzer/src/analyzer/mod.rs b/crates/swc_ecma_usage_analyzer/src/analyzer/mod.rs
index ded8e1479ed0..b63e7a6cb90a 100644
--- a/crates/swc_ecma_usage_analyzer/src/analyzer/mod.rs
+++ b/crates/swc_ecma_usage_analyzer/src/analyzer/mod.rs
@@ -255,6 +255,8 @@ where
                 BlockStmtOrExpr::Expr(body) => {
                     body.visit_with(child);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         })
     }
@@ -297,12 +299,16 @@ where
                 );
                 self.mark_mutation_if_member(e.as_member())
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if n.op == op!("=") {
             let left = match &n.left {
                 AssignTarget::Simple(left) => left.leftmost().map(Ident::to_id),
                 AssignTarget::Pat(..) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
 
             if let Some(left) = left {
@@ -712,6 +718,8 @@ where
                 v.mark_used_as_ref();
             }
             ModuleExportName::Str(..) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
     }
 
@@ -1562,7 +1570,11 @@ fn for_each_id_ref_in_expr(e: &Expr, op: &mut impl FnMut(&Ident)) {
                     Prop::Method(p) => {
                         for_each_id_ref_in_fn(&p.function, op);
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             });
         }
         _ => {}
@@ -1580,6 +1592,8 @@ fn for_each_id_ref_in_class(c: &Class, op: &mut impl FnMut(&Ident)) {
                 ParamOrTsParamProp::Param(p) => {
                     for_each_id_ref_in_pat(&p.pat, op);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             });
         }
 
@@ -1618,6 +1632,8 @@ fn for_each_id_ref_in_class(c: &Class, op: &mut impl FnMut(&Ident)) {
         ClassMember::Empty(..)
         | ClassMember::StaticBlock(..)
         | ClassMember::TsIndexSignature(..) => {}
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     });
 }
 fn for_each_id_ref_in_prop_name(p: &PropName, op: &mut impl FnMut(&Ident)) {
@@ -1655,6 +1671,8 @@ fn for_each_id_ref_in_pat(p: &Pat, op: &mut impl FnMut(&Ident)) {
                 ObjectPatProp::Rest(p) => {
                     for_each_id_ref_in_pat(&p.arg, op);
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             });
         }
         Pat::Assign(p) => {
@@ -1665,6 +1683,8 @@ fn for_each_id_ref_in_pat(p: &Pat, op: &mut impl FnMut(&Ident)) {
         Pat::Expr(p) => {
             for_each_id_ref_in_expr(p, op);
         }
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
diff --git a/crates/swc_ecma_utils/Cargo.toml b/crates/swc_ecma_utils/Cargo.toml
index 0913c4e66f8b..eaf8ad824d81 100644
--- a/crates/swc_ecma_utils/Cargo.toml
+++ b/crates/swc_ecma_utils/Cargo.toml
@@ -15,6 +15,9 @@ version       = "21.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 # Process in parallel.
 concurrent = ["swc_common/concurrent", "par-core/parallel"]
diff --git a/crates/swc_ecma_utils/src/function/fn_env_hoister.rs b/crates/swc_ecma_utils/src/function/fn_env_hoister.rs
index 06157f436ad2..75f863052f27 100644
--- a/crates/swc_ecma_utils/src/function/fn_env_hoister.rs
+++ b/crates/swc_ecma_utils/src/function/fn_env_hoister.rs
@@ -393,6 +393,8 @@ impl VisitMut for FnEnvHoister {
                         e.visit_mut_children_with(self);
                         return;
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => return,
                 };
                 if !self.super_disabled {
                     if let SimpleAssignTarget::SuperProp(super_prop) = &mut *expr {
@@ -463,6 +465,8 @@ impl VisitMut for FnEnvHoister {
                                 }
                                 .into();
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => (),
                         }
                     }
                 }
@@ -508,6 +512,8 @@ impl VisitMut for FnEnvHoister {
 
                                 *e = call.call_fn(*span, new_args);
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => (),
                         }
                     };
                 }
@@ -559,6 +565,8 @@ impl VisitMut for FnEnvHoister {
                         .into()
                     };
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => (),
             },
             _ => e.visit_mut_children_with(self),
         }
diff --git a/crates/swc_ecma_utils/src/lib.rs b/crates/swc_ecma_utils/src/lib.rs
index 2771b746eb82..b9b5808ded42 100644
--- a/crates/swc_ecma_utils/src/lib.rs
+++ b/crates/swc_ecma_utils/src/lib.rs
@@ -237,6 +237,8 @@ impl StmtOrModuleItem for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(v) => Err(v),
             ModuleItem::Stmt(v) => Ok(v),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -245,6 +247,8 @@ impl StmtOrModuleItem for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(v) => Err(v),
             ModuleItem::Stmt(v) => Ok(v),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -253,6 +257,8 @@ impl StmtOrModuleItem for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(v) => Err(v),
             ModuleItem::Stmt(v) => Ok(v),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -1199,6 +1205,8 @@ impl Visit for LiteralVisitor {
             }
             PropName::BigInt(_) => self.is_lit = false,
             PropName::Computed(..) => self.is_lit = false,
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 
@@ -1260,6 +1268,8 @@ pub fn is_simple_pure_member_expr(m: &MemberExpr, pure_getters: bool) -> bool {
         MemberProp::Computed(c) => {
             is_simple_pure_expr(&c.expr, pure_getters) && is_simple_pure_expr(&m.obj, pure_getters)
         }
+        #[cfg(swc_ast_unknown)]
+        _ => false,
     }
 }
 
@@ -1423,6 +1433,8 @@ pub fn prop_name_to_expr(p: PropName) -> Expr {
         PropName::Num(n) => Lit::Num(n).into(),
         PropName::BigInt(b) => Lit::BigInt(b).into(),
         PropName::Computed(c) => *c.expr,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 /// Similar to `prop_name_to_expr`, but used for value position.
@@ -1440,6 +1452,8 @@ pub fn prop_name_to_expr_value(p: PropName) -> Expr {
         PropName::Num(n) => Lit::Num(n).into(),
         PropName::BigInt(b) => Lit::BigInt(b).into(),
         PropName::Computed(c) => *c.expr,
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -1459,6 +1473,8 @@ pub fn prop_name_to_member_prop(prop_name: PropName) -> MemberProp {
             span: DUMMY_SP,
             expr: b.into(),
         }),
+        #[cfg(swc_ast_unknown)]
+        _ => panic!("unable to access unknown nodes"),
     }
 }
 
@@ -1930,11 +1946,15 @@ impl ExprCtx {
                         Prop::Assign(..) => {
                             unreachable!("assign property in object literal is not a valid syntax")
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => true,
                     },
                     PropOrSpread::Spread(SpreadElement { .. }) => {
                         has_spread = true;
                         true
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => true,
                 });
 
                 if has_spread {
@@ -1962,6 +1982,8 @@ impl ExprCtx {
                                     "assign property in object literal is not a valid syntax"
                                 )
                             }
+                            #[cfg(swc_ast_unknown)]
+                            _ => panic!("unable to access unknown nodes"),
                         },
                         _ => unreachable!(),
                     })
@@ -2007,6 +2029,8 @@ impl ExprCtx {
             Expr::OptChain(..) => to.push(Box::new(expr)),
 
             Expr::Invalid(..) => unreachable!(),
+            #[cfg(swc_ast_unknown)]
+            _ => to.push(Box::new(expr)),
         }
     }
 }
@@ -2021,6 +2045,8 @@ pub fn prop_name_eq(p: &PropName, key: &str) -> bool {
             Expr::Lit(Lit::Str(Str { value, .. })) => *value == *key,
             _ => false,
         },
+        #[cfg(swc_ast_unknown)]
+        _ => false,
     }
 }
 
@@ -2364,6 +2390,8 @@ impl VisitMut for IdentRenamer<'_> {
                 }
             }
             ModuleExportName::Str(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => {}
         }
     }
 
@@ -2515,6 +2543,8 @@ where
                     JSXElementName::Ident(ident) => ident.into(),
                     JSXElementName::JSXMemberExpr(expr) => Box::new(expr).into(),
                     JSXElementName::JSXNamespacedName(..) => unimplemented!(),
+                    #[cfg(swc_ast_unknown)]
+                    _ => return,
                 }
             }
         }
@@ -2949,6 +2979,8 @@ fn cast_to_bool(expr: &Expr, ctx: ExprCtx) -> (Purity, BoolValue) {
                     Lit::Null(..) => false,
                     Lit::Regex(..) => true,
                     Lit::JSXText(..) => unreachable!("as_bool() for JSXText"),
+                    #[cfg(swc_ast_unknown)]
+                    _ => return (Pure, Unknown),
                 }),
             );
         }
@@ -3506,6 +3538,8 @@ fn may_have_side_effects(expr: &Expr, ctx: ExprCtx) -> bool {
                             }) => true,
                             _ => false,
                         },
+                        #[cfg(swc_ast_unknown)]
+                        _ => true,
                     };
                     if obj.props.iter().any(can_have_side_effect) {
                         return true;
@@ -3517,6 +3551,8 @@ fn may_have_side_effects(expr: &Expr, ctx: ExprCtx) -> bool {
             match prop {
                 MemberProp::Computed(c) => c.expr.may_have_side_effects(ctx),
                 MemberProp::Ident(_) | MemberProp::PrivateName(_) => false,
+                #[cfg(swc_ast_unknown)]
+                _ => true,
             }
         }
 
@@ -3590,9 +3626,13 @@ fn may_have_side_effects(expr: &Expr, ctx: ExprCtx) -> bool {
                     _ => false,
                 },
                 Prop::Assign(_) => true,
+                #[cfg(swc_ast_unknown)]
+                _ => true,
             },
             // may trigger getter
             PropOrSpread::Spread(_) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => true,
         }),
 
         Expr::JSXMember(..)
@@ -3608,6 +3648,8 @@ fn may_have_side_effects(expr: &Expr, ctx: ExprCtx) -> bool {
         | Expr::TsSatisfies(TsSatisfiesExpr { ref expr, .. }) => expr.may_have_side_effects(ctx),
 
         Expr::Invalid(..) => true,
+        #[cfg(swc_ast_unknown)]
+        _ => true,
     }
 }
 
diff --git a/crates/swc_ecma_visit/Cargo.toml b/crates/swc_ecma_visit/Cargo.toml
index f0757fc8d814..566b5223a8ab 100644
--- a/crates/swc_ecma_visit/Cargo.toml
+++ b/crates/swc_ecma_visit/Cargo.toml
@@ -15,6 +15,9 @@ version       = "15.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 debug      = []
 default    = []
diff --git a/crates/swc_ecma_visit/src/generated.rs b/crates/swc_ecma_visit/src/generated.rs
index ff620835aaa6..dc14a1fe5604 100644
--- a/crates/swc_ecma_visit/src/generated.rs
+++ b/crates/swc_ecma_visit/src/generated.rs
@@ -9745,6 +9745,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Accessibility {
             Accessibility::Public => {}
             Accessibility::Protected => {}
             Accessibility::Private => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -9888,6 +9890,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for AssignOp {
             AssignOp::AndAssign => {}
             AssignOp::OrAssign => {}
             AssignOp::NullishAssign => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -9971,6 +9975,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for AssignTarget {
             AssignTarget::Pat { 0: _field_0 } => {
                 <AssignTargetPat as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -9991,6 +9997,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for AssignTargetPat {
             AssignTargetPat::Invalid { 0: _field_0 } => {
                 <Invalid as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10140,6 +10148,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for BinaryOp {
             BinaryOp::InstanceOf => {}
             BinaryOp::Exp => {}
             BinaryOp::NullishCoalescing => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10198,6 +10208,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for BlockStmtOrExpr {
             BlockStmtOrExpr::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10289,6 +10301,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Callee {
             Callee::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10441,6 +10455,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ClassMember {
             ClassMember::AutoAccessor { 0: _field_0 } => {
                 <AutoAccessor as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10682,6 +10698,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Decl {
             Decl::TsModule { 0: _field_0 } => {
                 <Box<TsModuleDecl> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10721,6 +10739,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for DefaultDecl {
             DefaultDecl::TsInterfaceDecl { 0: _field_0 } => {
                 <Box<TsInterfaceDecl> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -10925,6 +10945,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ExportSpecifier {
             ExportSpecifier::Named { 0: _field_0 } => {
                 <ExportNamedSpecifier as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11050,6 +11072,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Expr {
             Expr::Invalid { 0: _field_0 } => {
                 <Invalid as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11150,6 +11174,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ForHead {
             ForHead::Pat { 0: _field_0 } => {
                 <Box<Pat> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11509,6 +11535,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ImportPhase {
             ImportPhase::Evaluation => {}
             ImportPhase::Source => {}
             ImportPhase::Defer => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11529,6 +11557,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ImportSpecifier {
             ImportSpecifier::Namespace { 0: _field_0 } => {
                 <ImportStarAsSpecifier as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11641,6 +11671,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXAttrName {
             JSXAttrName::JSXNamespacedName { 0: _field_0 } => {
                 <JSXNamespacedName as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11658,6 +11690,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXAttrOrSpread {
             JSXAttrOrSpread::SpreadElement { 0: _field_0 } => {
                 <SpreadElement as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11681,6 +11715,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXAttrValue {
             JSXAttrValue::JSXFragment { 0: _field_0 } => {
                 <JSXFragment as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11772,6 +11808,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXElementChild {
             JSXElementChild::JSXFragment { 0: _field_0 } => {
                 <JSXFragment as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11792,6 +11830,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXElementName {
             JSXElementName::JSXNamespacedName { 0: _field_0 } => {
                 <JSXNamespacedName as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11825,6 +11865,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXExpr {
             JSXExpr::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -11935,6 +11977,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for JSXObject {
             JSXObject::Ident { 0: _field_0 } => {
                 <Ident as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12042,6 +12086,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Key {
             Key::Public { 0: _field_0 } => {
                 <PropName as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12134,6 +12180,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Lit {
             Lit::JSXText { 0: _field_0 } => {
                 <JSXText as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12176,6 +12224,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for MemberProp {
             MemberProp::Computed { 0: _field_0 } => {
                 <ComputedPropName as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12208,6 +12258,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for MetaPropKind {
         match self {
             MetaPropKind::NewTarget => {}
             MetaPropKind::ImportMeta => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12222,6 +12274,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for MethodKind {
             MethodKind::Method => {}
             MethodKind::Getter => {}
             MethodKind::Setter => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12305,6 +12359,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ModuleDecl {
             ModuleDecl::TsNamespaceExport { 0: _field_0 } => {
                 <TsNamespaceExportDecl as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12322,6 +12378,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ModuleExportName {
             ModuleExportName::Str { 0: _field_0 } => {
                 <Str as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12339,6 +12397,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ModuleItem {
             ModuleItem::Stmt { 0: _field_0 } => {
                 <Stmt as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12507,6 +12567,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ObjectPatProp {
             ObjectPatProp::Rest { 0: _field_0 } => {
                 <RestPat as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12560,6 +12622,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for OptChainBase {
             OptChainBase::Call { 0: _field_0 } => {
                 <OptCall as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12626,6 +12690,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for ParamOrTsParamProp {
             ParamOrTsParamProp::Param { 0: _field_0 } => {
                 <Param as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12677,6 +12743,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Pat {
             Pat::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12798,6 +12866,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Program {
             Program::Script { 0: _field_0 } => {
                 <Script as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12827,6 +12897,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Prop {
             Prop::Method { 0: _field_0 } => {
                 <MethodProp as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12853,6 +12925,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for PropName {
             PropName::BigInt { 0: _field_0 } => {
                 <BigInt as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -12870,6 +12944,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for PropOrSpread {
             PropOrSpread::Prop { 0: _field_0 } => {
                 <Box<Prop> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13064,6 +13140,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for SimpleAssignTarget {
             SimpleAssignTarget::Invalid { 0: _field_0 } => {
                 <Invalid as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13170,6 +13248,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for Stmt {
             Stmt::Expr { 0: _field_0 } => {
                 <ExprStmt as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13225,6 +13305,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for SuperProp {
             SuperProp::Computed { 0: _field_0 } => {
                 <ComputedPropName as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13434,6 +13516,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TruePlusMinus {
             TruePlusMinus::True => {}
             TruePlusMinus::Plus => {}
             TruePlusMinus::Minus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13670,6 +13754,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsEntityName {
             TsEntityName::Ident { 0: _field_0 } => {
                 <Ident as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13737,6 +13823,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsEnumMemberId {
             TsEnumMemberId::Str { 0: _field_0 } => {
                 <Str as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13820,6 +13908,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsFnOrConstructorType {
             TsFnOrConstructorType::TsConstructorType { 0: _field_0 } => {
                 <TsConstructorType as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -13843,6 +13933,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsFnParam {
             TsFnParam::Object { 0: _field_0 } => {
                 <ObjectPat as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14199,6 +14291,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsKeywordTypeKind {
             TsKeywordTypeKind::TsNullKeyword => {}
             TsKeywordTypeKind::TsNeverKeyword => {}
             TsKeywordTypeKind::TsIntrinsicKeyword => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14225,6 +14319,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsLit {
             TsLit::Tpl { 0: _field_0 } => {
                 <TsTplLitType as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14383,6 +14479,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsModuleName {
             TsModuleName::Str { 0: _field_0 } => {
                 <Str as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14400,6 +14498,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsModuleRef {
             TsModuleRef::TsExternalModuleRef { 0: _field_0 } => {
                 <TsExternalModuleRef as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14417,6 +14517,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsNamespaceBody {
             TsNamespaceBody::TsNamespaceDecl { 0: _field_0 } => {
                 <TsNamespaceDecl as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14551,6 +14653,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsParamPropParam {
             TsParamPropParam::Assign { 0: _field_0 } => {
                 <AssignPat as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14726,6 +14830,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsThisTypeOrIdent {
             TsThisTypeOrIdent::Ident { 0: _field_0 } => {
                 <Ident as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14864,6 +14970,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsType {
             TsType::TsImportType { 0: _field_0 } => {
                 <TsImportType as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -14972,6 +15080,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsTypeElement {
             TsTypeElement::TsIndexSignature { 0: _field_0 } => {
                 <TsIndexSignature as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15027,6 +15137,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => {}
             TsTypeOperatorOp::Unique => {}
             TsTypeOperatorOp::ReadOnly => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15170,6 +15282,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsTypeQueryExpr {
             TsTypeQueryExpr::Import { 0: _field_0 } => {
                 <TsImportType as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15216,6 +15330,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for TsUnionOrIntersectionType {
             TsUnionOrIntersectionType::TsIntersectionType { 0: _field_0 } => {
                 <TsIntersectionType as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15275,6 +15391,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for UnaryOp {
             UnaryOp::TypeOf => {}
             UnaryOp::Void => {}
             UnaryOp::Delete => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15315,6 +15433,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for UpdateOp {
         match self {
             UpdateOp::PlusPlus => {}
             UpdateOp::MinusMinus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15383,6 +15503,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for VarDeclKind {
             VarDeclKind::Var => {}
             VarDeclKind::Let => {}
             VarDeclKind::Const => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -15400,6 +15522,8 @@ impl<V: ?Sized + Visit> VisitWith<V> for VarDeclOrExpr {
             VarDeclOrExpr::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitWith<V>>::visit_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -32962,6 +33086,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Accessibility {
             Accessibility::Public => {}
             Accessibility::Protected => {}
             Accessibility::Private => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -33275,6 +33401,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for AssignOp {
             AssignOp::AndAssign => {}
             AssignOp::OrAssign => {}
             AssignOp::NullishAssign => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -33486,6 +33614,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for AssignTarget {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -33540,6 +33670,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for AssignTargetPat {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -33859,6 +33991,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for BinaryOp {
             BinaryOp::InstanceOf => {}
             BinaryOp::Exp => {}
             BinaryOp::NullishCoalescing => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -34003,6 +34137,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for BlockStmtOrExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -34214,6 +34350,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Callee {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -34601,6 +34739,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ClassMember {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -35186,6 +35326,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Decl {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -35285,6 +35427,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for DefaultDecl {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -35775,6 +35919,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ExportSpecifier {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -36178,6 +36324,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Expr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -36416,6 +36564,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ForHead {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37268,6 +37418,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ImportPhase {
             ImportPhase::Evaluation => {}
             ImportPhase::Source => {}
             ImportPhase::Defer => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37322,6 +37474,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ImportSpecifier {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37592,6 +37746,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXAttrName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37635,6 +37791,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXAttrOrSpread {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37700,6 +37858,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXAttrValue {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37930,6 +38090,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXElementChild {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -37984,6 +38146,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXElementName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -38061,6 +38225,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -38336,6 +38502,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for JSXObject {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -38584,6 +38752,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Key {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -38814,6 +38984,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Lit {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -38924,6 +39096,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for MemberProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -38992,6 +39166,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for MetaPropKind {
         match self {
             MetaPropKind::NewTarget => {}
             MetaPropKind::ImportMeta => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39016,6 +39192,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for MethodKind {
             MethodKind::Method => {}
             MethodKind::Getter => {}
             MethodKind::Setter => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39241,6 +39419,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ModuleDecl {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39284,6 +39464,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ModuleExportName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39327,6 +39509,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ModuleItem {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39717,6 +39901,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ObjectPatProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39840,6 +40026,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for OptChainBase {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -39990,6 +40178,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for ParamOrTsParamProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -40119,6 +40309,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Pat {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -40408,6 +40600,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Program {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -40495,6 +40689,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Prop {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -40571,6 +40767,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for PropName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -40614,6 +40812,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for PropOrSpread {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -41116,6 +41316,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for SimpleAssignTarget {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -41410,6 +41612,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for Stmt {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -41537,6 +41741,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for SuperProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -42011,6 +42217,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TruePlusMinus {
             TruePlusMinus::True => {}
             TruePlusMinus::Plus => {}
             TruePlusMinus::Minus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -42594,6 +42802,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsEntityName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -42755,6 +42965,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsEnumMemberId {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -42953,6 +43165,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsFnOrConstructorType {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -43018,6 +43232,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsFnParam {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -43833,6 +44049,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsKeywordTypeKind {
             TsKeywordTypeKind::TsNullKeyword => {}
             TsKeywordTypeKind::TsNeverKeyword => {}
             TsKeywordTypeKind::TsIntrinsicKeyword => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -43905,6 +44123,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsLit {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -44288,6 +44508,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsModuleName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -44331,6 +44553,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsModuleRef {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -44374,6 +44598,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsNamespaceBody {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -44690,6 +44916,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsParamPropParam {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -45105,6 +45333,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsThisTypeOrIdent {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -45507,6 +45737,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsType {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -45783,6 +46015,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsTypeElement {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -45908,6 +46142,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => {}
             TsTypeOperatorOp::Unique => {}
             TsTypeOperatorOp::ReadOnly => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -46235,6 +46471,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsTypeQueryExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -46336,6 +46574,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for TsUnionOrIntersectionType
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -46465,6 +46705,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for UnaryOp {
             UnaryOp::TypeOf => {}
             UnaryOp::Void => {}
             UnaryOp::Delete => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -46549,6 +46791,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for UpdateOp {
         match self {
             UpdateOp::PlusPlus => {}
             UpdateOp::MinusMinus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -46695,6 +46939,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for VarDeclKind {
             VarDeclKind::Var => {}
             VarDeclKind::Let => {}
             VarDeclKind::Const => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -46738,6 +46984,8 @@ impl<V: ?Sized + VisitAstPath> VisitWithAstPath<V> for VarDeclOrExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -58654,6 +58902,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Accessibility {
             Accessibility::Public => {}
             Accessibility::Protected => {}
             Accessibility::Private => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -58803,6 +59053,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for AssignOp {
             AssignOp::AndAssign => {}
             AssignOp::OrAssign => {}
             AssignOp::NullishAssign => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -58886,6 +59138,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for AssignTarget {
             AssignTarget::Pat { 0: _field_0 } => {
                 <AssignTargetPat as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -58906,6 +59160,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for AssignTargetPat {
             AssignTargetPat::Invalid { 0: _field_0 } => {
                 <Invalid as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59058,6 +59314,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for BinaryOp {
             BinaryOp::InstanceOf => {}
             BinaryOp::Exp => {}
             BinaryOp::NullishCoalescing => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59116,6 +59374,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for BlockStmtOrExpr {
             BlockStmtOrExpr::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59207,6 +59467,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Callee {
             Callee::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59364,6 +59626,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ClassMember {
             ClassMember::AutoAccessor { 0: _field_0 } => {
                 <AutoAccessor as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59614,6 +59878,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Decl {
             Decl::TsModule { 0: _field_0 } => {
                 <Box<TsModuleDecl> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59653,6 +59919,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for DefaultDecl {
             DefaultDecl::TsInterfaceDecl { 0: _field_0 } => {
                 <Box<TsInterfaceDecl> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59857,6 +60125,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ExportSpecifier {
             ExportSpecifier::Named { 0: _field_0 } => {
                 <ExportNamedSpecifier as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -59982,6 +60252,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Expr {
             Expr::Invalid { 0: _field_0 } => {
                 <Invalid as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60082,6 +60354,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ForHead {
             ForHead::Pat { 0: _field_0 } => {
                 <Box<Pat> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60447,6 +60721,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ImportPhase {
             ImportPhase::Evaluation => {}
             ImportPhase::Source => {}
             ImportPhase::Defer => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60467,6 +60743,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ImportSpecifier {
             ImportSpecifier::Namespace { 0: _field_0 } => {
                 <ImportStarAsSpecifier as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60579,6 +60857,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXAttrName {
             JSXAttrName::JSXNamespacedName { 0: _field_0 } => {
                 <JSXNamespacedName as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60596,6 +60876,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXAttrOrSpread {
             JSXAttrOrSpread::SpreadElement { 0: _field_0 } => {
                 <SpreadElement as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60619,6 +60901,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXAttrValue {
             JSXAttrValue::JSXFragment { 0: _field_0 } => {
                 <JSXFragment as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60710,6 +60994,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXElementChild {
             JSXElementChild::JSXFragment { 0: _field_0 } => {
                 <JSXFragment as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60730,6 +61016,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXElementName {
             JSXElementName::JSXNamespacedName { 0: _field_0 } => {
                 <JSXNamespacedName as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60763,6 +61051,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXExpr {
             JSXExpr::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60873,6 +61163,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for JSXObject {
             JSXObject::Ident { 0: _field_0 } => {
                 <Ident as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -60980,6 +61272,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Key {
             Key::Public { 0: _field_0 } => {
                 <PropName as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61072,6 +61366,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Lit {
             Lit::JSXText { 0: _field_0 } => {
                 <JSXText as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61114,6 +61410,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for MemberProp {
             MemberProp::Computed { 0: _field_0 } => {
                 <ComputedPropName as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61146,6 +61444,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for MetaPropKind {
         match self {
             MetaPropKind::NewTarget => {}
             MetaPropKind::ImportMeta => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61160,6 +61460,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for MethodKind {
             MethodKind::Method => {}
             MethodKind::Getter => {}
             MethodKind::Setter => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61243,6 +61545,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ModuleDecl {
             ModuleDecl::TsNamespaceExport { 0: _field_0 } => {
                 <TsNamespaceExportDecl as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61260,6 +61564,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ModuleExportName {
             ModuleExportName::Str { 0: _field_0 } => {
                 <Str as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61277,6 +61583,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ModuleItem {
             ModuleItem::Stmt { 0: _field_0 } => {
                 <Stmt as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61445,6 +61753,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ObjectPatProp {
             ObjectPatProp::Rest { 0: _field_0 } => {
                 <RestPat as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61498,6 +61808,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for OptChainBase {
             OptChainBase::Call { 0: _field_0 } => {
                 <OptCall as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61564,6 +61876,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for ParamOrTsParamProp {
             ParamOrTsParamProp::Param { 0: _field_0 } => {
                 <Param as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61615,6 +61929,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Pat {
             Pat::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61742,6 +62058,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Program {
             Program::Script { 0: _field_0 } => {
                 <Script as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61771,6 +62089,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Prop {
             Prop::Method { 0: _field_0 } => {
                 <MethodProp as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61797,6 +62117,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for PropName {
             PropName::BigInt { 0: _field_0 } => {
                 <BigInt as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -61814,6 +62136,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for PropOrSpread {
             PropOrSpread::Prop { 0: _field_0 } => {
                 <Box<Prop> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62008,6 +62332,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for SimpleAssignTarget {
             SimpleAssignTarget::Invalid { 0: _field_0 } => {
                 <Invalid as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62114,6 +62440,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for Stmt {
             Stmt::Expr { 0: _field_0 } => {
                 <ExprStmt as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62169,6 +62497,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for SuperProp {
             SuperProp::Computed { 0: _field_0 } => {
                 <ComputedPropName as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62378,6 +62708,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TruePlusMinus {
             TruePlusMinus::True => {}
             TruePlusMinus::Plus => {}
             TruePlusMinus::Minus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62623,6 +62955,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsEntityName {
             TsEntityName::Ident { 0: _field_0 } => {
                 <Ident as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62690,6 +63024,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsEnumMemberId {
             TsEnumMemberId::Str { 0: _field_0 } => {
                 <Str as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62773,6 +63109,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsFnOrConstructorType {
             TsFnOrConstructorType::TsConstructorType { 0: _field_0 } => {
                 <TsConstructorType as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -62796,6 +63134,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsFnParam {
             TsFnParam::Object { 0: _field_0 } => {
                 <ObjectPat as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63162,6 +63502,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsKeywordTypeKind {
             TsKeywordTypeKind::TsNullKeyword => {}
             TsKeywordTypeKind::TsNeverKeyword => {}
             TsKeywordTypeKind::TsIntrinsicKeyword => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63188,6 +63530,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsLit {
             TsLit::Tpl { 0: _field_0 } => {
                 <TsTplLitType as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63349,6 +63693,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsModuleName {
             TsModuleName::Str { 0: _field_0 } => {
                 <Str as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63366,6 +63712,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsModuleRef {
             TsModuleRef::TsExternalModuleRef { 0: _field_0 } => {
                 <TsExternalModuleRef as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63383,6 +63731,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsNamespaceBody {
             TsNamespaceBody::TsNamespaceDecl { 0: _field_0 } => {
                 <TsNamespaceDecl as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63520,6 +63870,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsParamPropParam {
             TsParamPropParam::Assign { 0: _field_0 } => {
                 <AssignPat as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63695,6 +64047,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsThisTypeOrIdent {
             TsThisTypeOrIdent::Ident { 0: _field_0 } => {
                 <Ident as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63833,6 +64187,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsType {
             TsType::TsImportType { 0: _field_0 } => {
                 <TsImportType as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63944,6 +64300,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsTypeElement {
             TsTypeElement::TsIndexSignature { 0: _field_0 } => {
                 <TsIndexSignature as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -63999,6 +64357,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => {}
             TsTypeOperatorOp::Unique => {}
             TsTypeOperatorOp::ReadOnly => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -64142,6 +64502,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsTypeQueryExpr {
             TsTypeQueryExpr::Import { 0: _field_0 } => {
                 <TsImportType as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -64188,6 +64550,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for TsUnionOrIntersectionType {
             TsUnionOrIntersectionType::TsIntersectionType { 0: _field_0 } => {
                 <TsIntersectionType as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -64247,6 +64611,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for UnaryOp {
             UnaryOp::TypeOf => {}
             UnaryOp::Void => {}
             UnaryOp::Delete => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -64287,6 +64653,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for UpdateOp {
         match self {
             UpdateOp::PlusPlus => {}
             UpdateOp::MinusMinus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -64355,6 +64723,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for VarDeclKind {
             VarDeclKind::Var => {}
             VarDeclKind::Let => {}
             VarDeclKind::Const => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -64372,6 +64742,8 @@ impl<V: ?Sized + VisitMut> VisitMutWith<V> for VarDeclOrExpr {
             VarDeclOrExpr::Expr { 0: _field_0 } => {
                 <Box<Expr> as VisitMutWith<V>>::visit_mut_with(_field_0, visitor);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -79413,6 +79785,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Accessibility {
             Accessibility::Public => {}
             Accessibility::Protected => {}
             Accessibility::Private => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -79661,6 +80035,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for AssignOp {
             AssignOp::AndAssign => {}
             AssignOp::OrAssign => {}
             AssignOp::NullishAssign => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -79827,6 +80203,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for AssignTarget {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -79870,6 +80248,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for AssignTargetPat {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -80125,6 +80505,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for BinaryOp {
             BinaryOp::InstanceOf => {}
             BinaryOp::Exp => {}
             BinaryOp::NullishCoalescing => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -80236,6 +80618,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for BlockStmtOrExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -80398,6 +80782,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Callee {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -80713,6 +81099,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ClassMember {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -81194,6 +81582,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Decl {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -81270,6 +81660,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for DefaultDecl {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -81650,6 +82042,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ExportSpecifier {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -82009,6 +82403,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Expr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -82188,6 +82584,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ForHead {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -82864,6 +83262,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ImportPhase {
             ImportPhase::Evaluation => {}
             ImportPhase::Source => {}
             ImportPhase::Defer => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -82907,6 +83307,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ImportSpecifier {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83113,6 +83515,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXAttrName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83146,6 +83550,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXAttrOrSpread {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83199,6 +83605,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXAttrValue {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83382,6 +83790,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXElementChild {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83425,6 +83835,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXElementName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83482,6 +83894,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83700,6 +84114,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for JSXObject {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -83890,6 +84306,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Key {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84081,6 +84499,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Lit {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84169,6 +84589,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for MemberProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84219,6 +84641,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for MetaPropKind {
         match self {
             MetaPropKind::NewTarget => {}
             MetaPropKind::ImportMeta => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84235,6 +84659,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for MethodKind {
             MethodKind::Method => {}
             MethodKind::Getter => {}
             MethodKind::Setter => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84420,6 +84846,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ModuleDecl {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84453,6 +84881,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ModuleExportName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84486,6 +84916,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ModuleItem {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84793,6 +85225,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ObjectPatProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -84889,6 +85323,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for OptChainBase {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85008,6 +85444,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for ParamOrTsParamProp
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85117,6 +85555,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Pat {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85356,6 +85796,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Program {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85423,6 +85865,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Prop {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85482,6 +85926,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for PropName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85515,6 +85961,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for PropOrSpread {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -85924,6 +86372,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for SimpleAssignTarget
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -86178,6 +86628,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for Stmt {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -86277,6 +86729,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for SuperProp {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -86650,6 +87104,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TruePlusMinus {
             TruePlusMinus::True => {}
             TruePlusMinus::Plus => {}
             TruePlusMinus::Minus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -87101,6 +87557,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsEntityName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -87229,6 +87687,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsEnumMemberId {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -87377,6 +87837,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsFnOrConstructorTy
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -87429,6 +87891,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsFnParam {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -88067,6 +88531,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsKeywordTypeKind {
             TsKeywordTypeKind::TsNullKeyword => {}
             TsKeywordTypeKind::TsNeverKeyword => {}
             TsKeywordTypeKind::TsIntrinsicKeyword => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -88125,6 +88591,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsLit {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -88429,6 +88897,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsModuleName {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -88462,6 +88932,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsModuleRef {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -88495,6 +88967,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsNamespaceBody {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -88748,6 +89222,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsParamPropParam {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -89072,6 +89548,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsThisTypeOrIdent {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -89409,6 +89887,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsType {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -89632,6 +90112,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsTypeElement {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -89727,6 +90209,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => {}
             TsTypeOperatorOp::Unique => {}
             TsTypeOperatorOp::ReadOnly => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -89990,6 +90474,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsTypeQueryExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -90069,6 +90555,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for TsUnionOrIntersecti
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -90166,6 +90654,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for UnaryOp {
             UnaryOp::TypeOf => {}
             UnaryOp::Void => {}
             UnaryOp::Delete => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -90230,6 +90720,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for UpdateOp {
         match self {
             UpdateOp::PlusPlus => {}
             UpdateOp::MinusMinus => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -90342,6 +90834,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for VarDeclKind {
             VarDeclKind::Var => {}
             VarDeclKind::Let => {}
             VarDeclKind::Const => {}
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -90375,6 +90869,8 @@ impl<V: ?Sized + VisitMutAstPath> VisitMutWithAstPath<V> for VarDeclOrExpr {
                     &mut *__ast_path,
                 );
             }
+            #[cfg(swc_ast_unknown)]
+            _ => (),
         }
     }
 }
@@ -101982,6 +102478,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Accessibility {
             Accessibility::Public => Accessibility::Public,
             Accessibility::Protected => Accessibility::Protected,
             Accessibility::Private => Accessibility::Private,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102123,6 +102621,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for AssignOp {
             AssignOp::AndAssign => AssignOp::AndAssign,
             AssignOp::OrAssign => AssignOp::OrAssign,
             AssignOp::NullishAssign => AssignOp::NullishAssign,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102193,6 +102693,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for AssignTarget {
                 let _field_0 = <AssignTargetPat as FoldWith<V>>::fold_with(_field_0, visitor);
                 AssignTarget::Pat { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102216,6 +102718,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for AssignTargetPat {
                 let _field_0 = <Invalid as FoldWith<V>>::fold_with(_field_0, visitor);
                 AssignTargetPat::Invalid { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102358,6 +102862,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for BinaryOp {
             BinaryOp::InstanceOf => BinaryOp::InstanceOf,
             BinaryOp::Exp => BinaryOp::Exp,
             BinaryOp::NullishCoalescing => BinaryOp::NullishCoalescing,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102411,6 +102917,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for BlockStmtOrExpr {
                 let _field_0 = <Box<Expr> as FoldWith<V>>::fold_with(_field_0, visitor);
                 BlockStmtOrExpr::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102500,6 +103008,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Callee {
                 let _field_0 = <Box<Expr> as FoldWith<V>>::fold_with(_field_0, visitor);
                 Callee::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102656,6 +103166,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ClassMember {
                 let _field_0 = <AutoAccessor as FoldWith<V>>::fold_with(_field_0, visitor);
                 ClassMember::AutoAccessor { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102903,6 +103415,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Decl {
                 let _field_0 = <Box<TsModuleDecl> as FoldWith<V>>::fold_with(_field_0, visitor);
                 Decl::TsModule { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -102942,6 +103456,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for DefaultDecl {
                 let _field_0 = <Box<TsInterfaceDecl> as FoldWith<V>>::fold_with(_field_0, visitor);
                 DefaultDecl::TsInterfaceDecl { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103133,6 +103649,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ExportSpecifier {
                 let _field_0 = <ExportNamedSpecifier as FoldWith<V>>::fold_with(_field_0, visitor);
                 ExportSpecifier::Named { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103296,6 +103814,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Expr {
                 let _field_0 = <Invalid as FoldWith<V>>::fold_with(_field_0, visitor);
                 Expr::Invalid { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103392,6 +103912,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ForHead {
                 let _field_0 = <Box<Pat> as FoldWith<V>>::fold_with(_field_0, visitor);
                 ForHead::Pat { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103734,6 +104256,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ImportPhase {
             ImportPhase::Evaluation => ImportPhase::Evaluation,
             ImportPhase::Source => ImportPhase::Source,
             ImportPhase::Defer => ImportPhase::Defer,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103758,6 +104282,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ImportSpecifier {
                 let _field_0 = <ImportStarAsSpecifier as FoldWith<V>>::fold_with(_field_0, visitor);
                 ImportSpecifier::Namespace { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103857,6 +104383,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXAttrName {
                 let _field_0 = <JSXNamespacedName as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXAttrName::JSXNamespacedName { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103876,6 +104404,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXAttrOrSpread {
                 let _field_0 = <SpreadElement as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXAttrOrSpread::SpreadElement { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103903,6 +104433,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXAttrValue {
                 let _field_0 = <JSXFragment as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXAttrValue::JSXFragment { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -103995,6 +104527,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXElementChild {
                 let _field_0 = <JSXFragment as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXElementChild::JSXFragment { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104018,6 +104552,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXElementName {
                 let _field_0 = <JSXNamespacedName as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXElementName::JSXNamespacedName { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104052,6 +104588,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXExpr {
                 let _field_0 = <Box<Expr> as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXExpr::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104150,6 +104688,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for JSXObject {
                 let _field_0 = <Ident as FoldWith<V>>::fold_with(_field_0, visitor);
                 JSXObject::Ident { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104251,6 +104791,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Key {
                 let _field_0 = <PropName as FoldWith<V>>::fold_with(_field_0, visitor);
                 Key::Public { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104339,6 +104881,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Lit {
                 let _field_0 = <JSXText as FoldWith<V>>::fold_with(_field_0, visitor);
                 Lit::JSXText { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104379,6 +104923,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for MemberProp {
                 let _field_0 = <ComputedPropName as FoldWith<V>>::fold_with(_field_0, visitor);
                 MemberProp::Computed { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104408,6 +104954,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for MetaPropKind {
         match self {
             MetaPropKind::NewTarget => MetaPropKind::NewTarget,
             MetaPropKind::ImportMeta => MetaPropKind::ImportMeta,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104422,6 +104970,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for MethodKind {
             MethodKind::Method => MethodKind::Method,
             MethodKind::Getter => MethodKind::Getter,
             MethodKind::Setter => MethodKind::Setter,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104512,6 +105062,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ModuleDecl {
                 let _field_0 = <TsNamespaceExportDecl as FoldWith<V>>::fold_with(_field_0, visitor);
                 ModuleDecl::TsNamespaceExport { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104531,6 +105083,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ModuleExportName {
                 let _field_0 = <Str as FoldWith<V>>::fold_with(_field_0, visitor);
                 ModuleExportName::Str { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104550,6 +105104,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ModuleItem {
                 let _field_0 = <Stmt as FoldWith<V>>::fold_with(_field_0, visitor);
                 ModuleItem::Stmt { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104714,6 +105270,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ObjectPatProp {
                 let _field_0 = <RestPat as FoldWith<V>>::fold_with(_field_0, visitor);
                 ObjectPatProp::Rest { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104768,6 +105326,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for OptChainBase {
                 let _field_0 = <OptCall as FoldWith<V>>::fold_with(_field_0, visitor);
                 OptChainBase::Call { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104837,6 +105397,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for ParamOrTsParamProp {
                 let _field_0 = <Param as FoldWith<V>>::fold_with(_field_0, visitor);
                 ParamOrTsParamProp::Param { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -104892,6 +105454,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Pat {
                 let _field_0 = <Box<Expr> as FoldWith<V>>::fold_with(_field_0, visitor);
                 Pat::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105017,6 +105581,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Program {
                 let _field_0 = <Script as FoldWith<V>>::fold_with(_field_0, visitor);
                 Program::Script { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105052,6 +105618,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Prop {
                 let _field_0 = <MethodProp as FoldWith<V>>::fold_with(_field_0, visitor);
                 Prop::Method { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105083,6 +105651,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for PropName {
                 let _field_0 = <BigInt as FoldWith<V>>::fold_with(_field_0, visitor);
                 PropName::BigInt { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105102,6 +105672,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for PropOrSpread {
                 let _field_0 = <Box<Prop> as FoldWith<V>>::fold_with(_field_0, visitor);
                 PropOrSpread::Prop { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105293,6 +105865,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for SimpleAssignTarget {
                 let _field_0 = <Invalid as FoldWith<V>>::fold_with(_field_0, visitor);
                 SimpleAssignTarget::Invalid { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105413,6 +105987,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for Stmt {
                 let _field_0 = <ExprStmt as FoldWith<V>>::fold_with(_field_0, visitor);
                 Stmt::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105464,6 +106040,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for SuperProp {
                 let _field_0 = <ComputedPropName as FoldWith<V>>::fold_with(_field_0, visitor);
                 SuperProp::Computed { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105657,6 +106235,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TruePlusMinus {
             TruePlusMinus::True => TruePlusMinus::True,
             TruePlusMinus::Plus => TruePlusMinus::Plus,
             TruePlusMinus::Minus => TruePlusMinus::Minus,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105888,6 +106468,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsEntityName {
                 let _field_0 = <Ident as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsEntityName::Ident { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -105953,6 +106535,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsEnumMemberId {
                 let _field_0 = <Str as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsEnumMemberId::Str { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106033,6 +106617,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsFnOrConstructorType {
                 let _field_0 = <TsConstructorType as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsFnOrConstructorType::TsConstructorType { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106060,6 +106646,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsFnParam {
                 let _field_0 = <ObjectPat as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsFnParam::Object { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106409,6 +106997,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsKeywordTypeKind {
             TsKeywordTypeKind::TsNullKeyword => TsKeywordTypeKind::TsNullKeyword,
             TsKeywordTypeKind::TsNeverKeyword => TsKeywordTypeKind::TsNeverKeyword,
             TsKeywordTypeKind::TsIntrinsicKeyword => TsKeywordTypeKind::TsIntrinsicKeyword,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106440,6 +107030,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsLit {
                 let _field_0 = <TsTplLitType as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsLit::Tpl { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106598,6 +107190,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsModuleName {
                 let _field_0 = <Str as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsModuleName::Str { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106617,6 +107211,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsModuleRef {
                 let _field_0 = <TsExternalModuleRef as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsModuleRef::TsExternalModuleRef { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106636,6 +107232,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsNamespaceBody {
                 let _field_0 = <TsNamespaceDecl as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsNamespaceBody::TsNamespaceDecl { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106766,6 +107364,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsParamPropParam {
                 let _field_0 = <AssignPat as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsParamPropParam::Assign { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -106933,6 +107533,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsThisTypeOrIdent {
                 let _field_0 = <Ident as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsThisTypeOrIdent::Ident { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107084,6 +107686,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsType {
                 let _field_0 = <TsImportType as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsType::TsImportType { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107197,6 +107801,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsTypeElement {
                 let _field_0 = <TsIndexSignature as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsTypeElement::TsIndexSignature { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107244,6 +107850,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => TsTypeOperatorOp::KeyOf,
             TsTypeOperatorOp::Unique => TsTypeOperatorOp::Unique,
             TsTypeOperatorOp::ReadOnly => TsTypeOperatorOp::ReadOnly,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107388,6 +107996,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsTypeQueryExpr {
                 let _field_0 = <TsImportType as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsTypeQueryExpr::Import { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107437,6 +108047,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for TsUnionOrIntersectionType {
                 let _field_0 = <TsIntersectionType as FoldWith<V>>::fold_with(_field_0, visitor);
                 TsUnionOrIntersectionType::TsIntersectionType { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107488,6 +108100,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for UnaryOp {
             UnaryOp::TypeOf => UnaryOp::TypeOf,
             UnaryOp::Void => UnaryOp::Void,
             UnaryOp::Delete => UnaryOp::Delete,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107528,6 +108142,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for UpdateOp {
         match self {
             UpdateOp::PlusPlus => UpdateOp::PlusPlus,
             UpdateOp::MinusMinus => UpdateOp::MinusMinus,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107596,6 +108212,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for VarDeclKind {
             VarDeclKind::Var => VarDeclKind::Var,
             VarDeclKind::Let => VarDeclKind::Let,
             VarDeclKind::Const => VarDeclKind::Const,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -107615,6 +108233,8 @@ impl<V: ?Sized + Fold> FoldWith<V> for VarDeclOrExpr {
                 let _field_0 = <Box<Expr> as FoldWith<V>>::fold_with(_field_0, visitor);
                 VarDeclOrExpr::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -123415,6 +124035,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Accessibility {
             Accessibility::Public => Accessibility::Public,
             Accessibility::Protected => Accessibility::Protected,
             Accessibility::Private => Accessibility::Private,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -123690,6 +124312,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for AssignOp {
             AssignOp::AndAssign => AssignOp::AndAssign,
             AssignOp::OrAssign => AssignOp::OrAssign,
             AssignOp::NullishAssign => AssignOp::NullishAssign,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -123861,6 +124485,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for AssignTarget {
                 );
                 AssignTarget::Pat { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -123907,6 +124533,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for AssignTargetPat {
                 );
                 AssignTargetPat::Invalid { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -124178,6 +124806,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for BinaryOp {
             BinaryOp::InstanceOf => BinaryOp::InstanceOf,
             BinaryOp::Exp => BinaryOp::Exp,
             BinaryOp::NullishCoalescing => BinaryOp::NullishCoalescing,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -124289,6 +124919,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for BlockStmtOrExpr {
                 );
                 BlockStmtOrExpr::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -124463,6 +125095,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Callee {
                 );
                 Callee::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -124809,6 +125443,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ClassMember {
                 );
                 ClassMember::AutoAccessor { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -125342,6 +125978,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Decl {
                 );
                 Decl::TsModule { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -125422,6 +126060,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for DefaultDecl {
                 );
                 DefaultDecl::TsInterfaceDecl { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -125824,6 +126464,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ExportSpecifier {
                 );
                 ExportSpecifier::Named { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -126221,6 +126863,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Expr {
                 );
                 Expr::Invalid { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -126411,6 +127055,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ForHead {
                 );
                 ForHead::Pat { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127157,6 +127803,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ImportPhase {
             ImportPhase::Evaluation => ImportPhase::Evaluation,
             ImportPhase::Source => ImportPhase::Source,
             ImportPhase::Defer => ImportPhase::Defer,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127203,6 +127851,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ImportSpecifier {
                 );
                 ImportSpecifier::Namespace { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127416,6 +128066,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXAttrName {
                 );
                 JSXAttrName::JSXNamespacedName { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127451,6 +128103,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXAttrOrSpread {
                 );
                 JSXAttrOrSpread::SpreadElement { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127508,6 +128162,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXAttrValue {
                 );
                 JSXAttrValue::JSXFragment { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127704,6 +128360,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXElementChild {
                 );
                 JSXElementChild::JSXFragment { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127750,6 +128408,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXElementName {
                 );
                 JSXElementName::JSXNamespacedName { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -127810,6 +128470,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXExpr {
                 );
                 JSXExpr::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128039,6 +128701,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for JSXObject {
                 );
                 JSXObject::Ident { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128241,6 +128905,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Key {
                 );
                 Key::Public { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128442,6 +129108,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Lit {
                 );
                 Lit::JSXText { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128534,6 +129202,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for MemberProp {
                 );
                 MemberProp::Computed { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128585,6 +129255,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for MetaPropKind {
         match self {
             MetaPropKind::NewTarget => MetaPropKind::NewTarget,
             MetaPropKind::ImportMeta => MetaPropKind::ImportMeta,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128601,6 +129273,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for MethodKind {
             MethodKind::Method => MethodKind::Method,
             MethodKind::Getter => MethodKind::Getter,
             MethodKind::Setter => MethodKind::Setter,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128801,6 +129475,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ModuleDecl {
                 );
                 ModuleDecl::TsNamespaceExport { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128836,6 +129512,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ModuleExportName {
                 );
                 ModuleExportName::Str { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -128871,6 +129549,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ModuleItem {
                 );
                 ModuleItem::Stmt { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129204,6 +129884,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ObjectPatProp {
                 );
                 ObjectPatProp::Rest { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129309,6 +129991,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for OptChainBase {
                 );
                 OptChainBase::Call { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129436,6 +130120,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for ParamOrTsParamProp {
                 );
                 ParamOrTsParamProp::Param { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129553,6 +130239,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Pat {
                 );
                 Pat::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129820,6 +130508,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Program {
                 );
                 Program::Script { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129893,6 +130583,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Prop {
                 );
                 Prop::Method { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129957,6 +130649,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for PropName {
                 );
                 PropName::BigInt { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -129992,6 +130686,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for PropOrSpread {
                 );
                 PropOrSpread::Prop { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -130433,6 +131129,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for SimpleAssignTarget {
                 );
                 SimpleAssignTarget::Invalid { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -130708,6 +131406,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for Stmt {
                 );
                 Stmt::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -130811,6 +131511,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for SuperProp {
                 );
                 SuperProp::Computed { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -131211,6 +131913,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TruePlusMinus {
             TruePlusMinus::True => TruePlusMinus::True,
             TruePlusMinus::Plus => TruePlusMinus::Plus,
             TruePlusMinus::Minus => TruePlusMinus::Minus,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -131715,6 +132419,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsEntityName {
                 );
                 TsEntityName::Ident { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -131849,6 +132555,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsEnumMemberId {
                 );
                 TsEnumMemberId::Str { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -132002,6 +132710,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsFnOrConstructorType {
                 );
                 TsFnOrConstructorType::TsConstructorType { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -132058,6 +132768,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsFnParam {
                 );
                 TsFnParam::Object { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -132753,6 +133465,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsKeywordTypeKind {
             TsKeywordTypeKind::TsNullKeyword => TsKeywordTypeKind::TsNullKeyword,
             TsKeywordTypeKind::TsNeverKeyword => TsKeywordTypeKind::TsNeverKeyword,
             TsKeywordTypeKind::TsIntrinsicKeyword => TsKeywordTypeKind::TsIntrinsicKeyword,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -132816,6 +133530,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsLit {
                 );
                 TsLit::Tpl { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -133153,6 +133869,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsModuleName {
                 );
                 TsModuleName::Str { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -133188,6 +133906,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsModuleRef {
                 );
                 TsModuleRef::TsExternalModuleRef { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -133223,6 +133943,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsNamespaceBody {
                 );
                 TsNamespaceBody::TsNamespaceDecl { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -133488,6 +134210,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsParamPropParam {
                 );
                 TsParamPropParam::Assign { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -133837,6 +134561,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsThisTypeOrIdent {
                 );
                 TsThisTypeOrIdent::Ident { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -134202,6 +134928,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsType {
                 );
                 TsType::TsImportType { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -134445,6 +135173,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsTypeElement {
                 );
                 TsTypeElement::TsIndexSignature { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -134542,6 +135272,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => TsTypeOperatorOp::KeyOf,
             TsTypeOperatorOp::Unique => TsTypeOperatorOp::Unique,
             TsTypeOperatorOp::ReadOnly => TsTypeOperatorOp::ReadOnly,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -134829,6 +135561,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsTypeQueryExpr {
                 );
                 TsTypeQueryExpr::Import { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -134915,6 +135649,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for TsUnionOrIntersectionType {
                 );
                 TsUnionOrIntersectionType::TsIntersectionType { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -135014,6 +135750,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for UnaryOp {
             UnaryOp::TypeOf => UnaryOp::TypeOf,
             UnaryOp::Void => UnaryOp::Void,
             UnaryOp::Delete => UnaryOp::Delete,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -135084,6 +135822,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for UpdateOp {
         match self {
             UpdateOp::PlusPlus => UpdateOp::PlusPlus,
             UpdateOp::MinusMinus => UpdateOp::MinusMinus,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -135208,6 +135948,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for VarDeclKind {
             VarDeclKind::Var => VarDeclKind::Var,
             VarDeclKind::Let => VarDeclKind::Let,
             VarDeclKind::Const => VarDeclKind::Const,
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
@@ -135243,6 +135985,8 @@ impl<V: ?Sized + FoldAstPath> FoldWithAstPath<V> for VarDeclOrExpr {
                 );
                 VarDeclOrExpr::Expr { 0: _field_0 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => self,
         }
     }
 }
diff --git a/crates/swc_ecmascript/Cargo.toml b/crates/swc_ecmascript/Cargo.toml
index 9a9df7215681..66fb5aa4999b 100644
--- a/crates/swc_ecmascript/Cargo.toml
+++ b/crates/swc_ecmascript/Cargo.toml
@@ -15,6 +15,9 @@ version       = "39.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 codegen    = ["swc_ecma_codegen"]
 concurrent = ["swc_ecma_minifier/concurrent"]
diff --git a/crates/swc_estree_compat/Cargo.toml b/crates/swc_estree_compat/Cargo.toml
index 0a968fbbe0d8..230f96528a6a 100644
--- a/crates/swc_estree_compat/Cargo.toml
+++ b/crates/swc_estree_compat/Cargo.toml
@@ -15,6 +15,9 @@ version       = "26.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 
 [dependencies]
diff --git a/crates/swc_estree_compat/src/babelify/class.rs b/crates/swc_estree_compat/src/babelify/class.rs
index 2002f0f3a49a..f9b651254cf6 100644
--- a/crates/swc_estree_compat/src/babelify/class.rs
+++ b/crates/swc_estree_compat/src/babelify/class.rs
@@ -61,6 +61,8 @@ impl Babelify for ClassMember {
             ),
             ClassMember::StaticBlock(s) => ClassBodyEl::StaticBlock(s.babelify(ctx)),
             ClassMember::AutoAccessor(..) => todo!("auto accessor"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -212,6 +214,8 @@ impl Babelify for MethodKind {
             MethodKind::Method => ClassMethodKind::Method,
             MethodKind::Getter => ClassMethodKind::Get,
             MethodKind::Setter => ClassMethodKind::Set,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/decl.rs b/crates/swc_estree_compat/src/babelify/decl.rs
index 656f9b0e77c3..e8fd11e6010d 100644
--- a/crates/swc_estree_compat/src/babelify/decl.rs
+++ b/crates/swc_estree_compat/src/babelify/decl.rs
@@ -20,6 +20,8 @@ impl Babelify for Decl {
             Decl::TsTypeAlias(d) => Declaration::TSTypeAliasDecl(d.babelify(ctx)),
             Decl::TsEnum(d) => Declaration::TSEnumDecl(d.babelify(ctx)),
             Decl::TsModule(d) => Declaration::TSModuleDecl(d.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -108,6 +110,8 @@ impl Babelify for VarDeclKind {
             VarDeclKind::Var => VariableDeclarationKind::Var,
             VarDeclKind::Let => VariableDeclarationKind::Let,
             VarDeclKind::Const => VariableDeclarationKind::Const,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/expr.rs b/crates/swc_estree_compat/src/babelify/expr.rs
index 7150c39ba9fa..55dab6308382 100644
--- a/crates/swc_estree_compat/src/babelify/expr.rs
+++ b/crates/swc_estree_compat/src/babelify/expr.rs
@@ -98,6 +98,8 @@ impl Babelify for Expr {
                         "illegal conversion: Cannot convert {:?} to ExprOutput",
                         &lit
                     ), // TODO(dwoznicki): is this really illegal?
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }
             }
             Expr::Tpl(t) => {
@@ -169,6 +171,8 @@ impl Babelify for Expr {
                 "illegal conversion: Cannot convert {:?} to ExprOutput - babel has no equivalent",
                 &self
             ),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -268,6 +272,8 @@ impl Babelify for PropOrSpread {
                     ObjectMember::Prop(p) => ObjectExprProp::Prop(p),
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -404,6 +410,8 @@ impl Babelify for MemberProp {
             Self::Computed(c) => MemberExprProp::Expr(c.babelify(ctx).into()),
             Self::Ident(i) => MemberExprProp::Id(i.babelify(ctx)),
             Self::PrivateName(p) => MemberExprProp::PrivateName(p.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -431,6 +439,8 @@ impl Babelify for SuperProp {
         match self {
             Self::Computed(c) => MemberExprProp::Expr(c.babelify(ctx).into()),
             Self::Ident(i) => MemberExprProp::Id(i.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -586,6 +596,8 @@ impl Babelify for MetaPropExpr {
                 }
                 .babelify(ctx),
             ),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         MetaProperty {
             base: ctx.base(self.span()),
@@ -671,6 +683,8 @@ impl Babelify for Callee {
             Callee::Expr(e) => e.babelify(ctx).into(),
             Callee::Super(s) => Expression::Super(s.babelify(ctx)),
             Callee::Import(i) => Expression::Import(i.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -718,6 +732,8 @@ impl Babelify for BlockStmtOrExpr {
             BlockStmtOrExpr::Expr(e) => {
                 ArrowFuncExprBody::Expr(Box::alloc().init(e.babelify(ctx).into()))
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -729,6 +745,8 @@ impl Babelify for AssignTarget {
         match self {
             AssignTarget::Simple(s) => s.babelify(ctx),
             AssignTarget::Pat(p) => p.babelify(ctx),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -754,6 +772,8 @@ impl Babelify for AssignTargetPat {
             AssignTargetPat::Array(a) => LVal::ArrayPat(a.babelify(ctx)),
             AssignTargetPat::Object(o) => LVal::ObjectPat(o.babelify(ctx)),
             AssignTargetPat::Invalid(_) => todo!(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/function.rs b/crates/swc_estree_compat/src/babelify/function.rs
index 2eb42e6c055e..8dc116f1cd50 100644
--- a/crates/swc_estree_compat/src/babelify/function.rs
+++ b/crates/swc_estree_compat/src/babelify/function.rs
@@ -64,6 +64,8 @@ impl Babelify for Param {
                 "illegal conversion: Cannot convert {:?} to BabelParam",
                 &self.pat
             ),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -75,6 +77,8 @@ impl Babelify for ParamOrTsParamProp {
         match self {
             ParamOrTsParamProp::TsParamProp(p) => BabelParam::TSProp(p.babelify(ctx)),
             ParamOrTsParamProp::Param(p) => p.babelify(ctx),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/jsx.rs b/crates/swc_estree_compat/src/babelify/jsx.rs
index 518c899f83ef..e4de2fff552a 100644
--- a/crates/swc_estree_compat/src/babelify/jsx.rs
+++ b/crates/swc_estree_compat/src/babelify/jsx.rs
@@ -26,6 +26,8 @@ impl Babelify for JSXObject {
         match self {
             JSXObject::JSXMemberExpr(e) => JSXMemberExprObject::Expr(e.babelify(ctx)),
             JSXObject::Ident(i) => JSXMemberExprObject::Id(i.babelify(ctx).into()),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -84,6 +86,8 @@ impl Babelify for JSXExpr {
             JSXExpr::Expr(e) => {
                 JSXExprContainerExpr::Expr(Box::alloc().init(e.babelify(ctx).into()))
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -107,6 +111,8 @@ impl Babelify for JSXElementName {
             JSXElementName::Ident(i) => BabelJSXElementName::Id(i.babelify(ctx).into()),
             JSXElementName::JSXMemberExpr(e) => BabelJSXElementName::Expr(e.babelify(ctx)),
             JSXElementName::JSXNamespacedName(n) => BabelJSXElementName::Name(n.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -140,6 +146,8 @@ impl Babelify for JSXAttrOrSpread {
                     argument: Box::alloc().init(spread.expr.babelify(ctx).into()),
                 })
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -203,6 +211,8 @@ impl Babelify for JSXAttrName {
         match self {
             JSXAttrName::Ident(i) => BabelJSXAttrName::Id(i.babelify(ctx).into()),
             JSXAttrName::JSXNamespacedName(n) => BabelJSXAttrName::Name(n.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -226,6 +236,8 @@ impl Babelify for JSXAttrValue {
             JSXAttrValue::JSXExprContainer(e) => JSXAttrVal::Expr(e.babelify(ctx)),
             JSXAttrValue::JSXElement(e) => JSXAttrVal::Element(e.babelify(ctx)),
             JSXAttrValue::JSXFragment(f) => JSXAttrVal::Fragment(f.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -269,6 +281,8 @@ impl Babelify for JSXElementChild {
             JSXElementChild::JSXSpreadChild(s) => BabelJSXElementChild::Spread(s.babelify(ctx)),
             JSXElementChild::JSXElement(e) => BabelJSXElementChild::Element(e.babelify(ctx)),
             JSXElementChild::JSXFragment(f) => BabelJSXElementChild::Fragment(f.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/lit.rs b/crates/swc_estree_compat/src/babelify/lit.rs
index f304da417070..7d6b610f1762 100644
--- a/crates/swc_estree_compat/src/babelify/lit.rs
+++ b/crates/swc_estree_compat/src/babelify/lit.rs
@@ -26,6 +26,8 @@ impl Babelify for Lit {
             Lit::BigInt(i) => LitOutput::Lit(Literal::BigInt(i.babelify(ctx))),
             Lit::Regex(r) => LitOutput::Lit(Literal::RegExp(r.babelify(ctx))),
             Lit::JSXText(t) => LitOutput::JSX(t.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/module.rs b/crates/swc_estree_compat/src/babelify/module.rs
index 1eef3b1a604a..a0ef9b98a368 100644
--- a/crates/swc_estree_compat/src/babelify/module.rs
+++ b/crates/swc_estree_compat/src/babelify/module.rs
@@ -20,6 +20,8 @@ impl Babelify for Program {
             Program::Script(script) => script.babelify(ctx),
             // TODO: reenable once experimental_metadata breaking change is merged
             // _ => unreachable!(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         File {
@@ -150,6 +152,8 @@ impl Babelify for ModuleItem {
         match self {
             ModuleItem::ModuleDecl(d) => ModuleItemOutput::ModuleDecl(d.babelify(ctx).into()),
             ModuleItem::Stmt(s) => ModuleItemOutput::Stmt(s.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/module_decl.rs b/crates/swc_estree_compat/src/babelify/module_decl.rs
index 989b3f163c92..9a6c0073791d 100644
--- a/crates/swc_estree_compat/src/babelify/module_decl.rs
+++ b/crates/swc_estree_compat/src/babelify/module_decl.rs
@@ -49,6 +49,8 @@ impl Babelify for ModuleDecl {
             ModuleDecl::TsNamespaceExport(e) => {
                 ModuleDeclOutput::TsNamespaceExport(e.babelify(ctx))
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -180,6 +182,8 @@ impl Babelify for swc_ecma_ast::ImportPhase {
             Self::Evaluation => None,
             Self::Source => Some(swc_estree_ast::ImportPhase::Source),
             Self::Defer => Some(swc_estree_ast::ImportPhase::Defer),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -238,7 +242,15 @@ impl Babelify for DefaultDecl {
         match self {
             DefaultDecl::Class(c) => ExportDefaultDeclType::Class(c.babelify(ctx).into()),
             DefaultDecl::Fn(f) => ExportDefaultDeclType::Func(f.babelify(ctx).into()),
-            DefaultDecl::TsInterfaceDecl(_) => panic!("unimplemented"), /* TODO(dwoznicki): Babel expects a TSDeclareFunction here, which does not map cleanly to TsInterfaceDecl expected by swc */
+            DefaultDecl::TsInterfaceDecl(_) => panic!("unimplemented"), /* TODO(dwoznicki): */
+            // Babel expects a
+            // TSDeclareFunction
+            // here, which does not
+            // map cleanly to
+            // TsInterfaceDecl
+            // expected by swc
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -251,6 +263,8 @@ impl Babelify for ImportSpecifier {
             ImportSpecifier::Named(s) => ImportSpecifierType::Import(s.babelify(ctx)),
             ImportSpecifier::Default(s) => ImportSpecifierType::Default(s.babelify(ctx)),
             ImportSpecifier::Namespace(s) => ImportSpecifierType::Namespace(s.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -305,6 +319,8 @@ impl Babelify for ExportSpecifier {
             ExportSpecifier::Named(s) => ExportSpecifierType::Export(s.babelify(ctx)),
             ExportSpecifier::Default(s) => ExportSpecifierType::Default(s.babelify(ctx)),
             ExportSpecifier::Namespace(s) => ExportSpecifierType::Namespace(s.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -356,6 +372,8 @@ impl Babelify for ModuleExportName {
         match self {
             ModuleExportName::Ident(ident) => ModuleExportNameType::Ident(ident.babelify(ctx)),
             ModuleExportName::Str(..) => unimplemented!("module string names unimplemented"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/operators.rs b/crates/swc_estree_compat/src/babelify/operators.rs
index 3353fc7dfc25..065108d8367e 100644
--- a/crates/swc_estree_compat/src/babelify/operators.rs
+++ b/crates/swc_estree_compat/src/babelify/operators.rs
@@ -64,6 +64,8 @@ impl Babelify for BinaryOp {
             BinaryOp::InstanceOf => BinaryOpOutput::BinOp(BinaryExprOp::Instanceof),
             BinaryOp::Exp => BinaryOpOutput::BinOp(BinaryExprOp::Exponentiation),
             BinaryOp::NullishCoalescing => BinaryOpOutput::LogicOp(LogicalExprOp::Nullish),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -92,6 +94,8 @@ impl Babelify for AssignOp {
             AssignOp::AndAssign => "&&=".into(),
             AssignOp::OrAssign => "||=".into(),
             AssignOp::NullishAssign => "??=".into(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -103,6 +107,8 @@ impl Babelify for UpdateOp {
         match self {
             UpdateOp::PlusPlus => UpdateExprOp::Increment,
             UpdateOp::MinusMinus => UpdateExprOp::Decrement,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -120,6 +126,8 @@ impl Babelify for UnaryOp {
             UnaryOp::TypeOf => UnaryExprOp::Typeof,
             UnaryOp::Void => UnaryExprOp::Void,
             UnaryOp::Delete => UnaryExprOp::Delete,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/pat.rs b/crates/swc_estree_compat/src/babelify/pat.rs
index b6465eed31c5..b4305df1f237 100644
--- a/crates/swc_estree_compat/src/babelify/pat.rs
+++ b/crates/swc_estree_compat/src/babelify/pat.rs
@@ -37,6 +37,8 @@ impl Babelify for Pat {
                 "illegal conversion: Cannot convert {:?} to PatOutput",
                 &self
             ),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -188,6 +190,8 @@ impl Babelify for ObjectPatProp {
             ObjectPatProp::KeyValue(p) => ObjectPatternProp::Prop(p.babelify(ctx)),
             ObjectPatProp::Rest(r) => ObjectPatternProp::Rest(r.babelify(ctx)),
             ObjectPatProp::Assign(a) => ObjectPatternProp::Prop(a.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/stmt.rs b/crates/swc_estree_compat/src/babelify/stmt.rs
index 0f8d08538066..4389e4bea25c 100644
--- a/crates/swc_estree_compat/src/babelify/stmt.rs
+++ b/crates/swc_estree_compat/src/babelify/stmt.rs
@@ -61,8 +61,12 @@ impl Babelify for Stmt {
                 Decl::TsTypeAlias(d) => Statement::TSTypeAliasDecl(d.babelify(ctx)),
                 Decl::TsEnum(d) => Statement::TSEnumDecl(d.babelify(ctx)),
                 Decl::TsModule(d) => Statement::TSModuleDecl(d.babelify(ctx)),
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Stmt::Expr(s) => Statement::Expr(s.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -322,6 +326,8 @@ impl Babelify for VarDeclOrExpr {
         match self {
             VarDeclOrExpr::VarDecl(v) => ForStmtInit::VarDecl(v.babelify(ctx)),
             VarDeclOrExpr::Expr(e) => ForStmtInit::Expr(Box::alloc().init(e.babelify(ctx).into())),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_estree_compat/src/babelify/typescript.rs b/crates/swc_estree_compat/src/babelify/typescript.rs
index c094ee4d2f09..62af39a926a1 100644
--- a/crates/swc_estree_compat/src/babelify/typescript.rs
+++ b/crates/swc_estree_compat/src/babelify/typescript.rs
@@ -85,6 +85,8 @@ impl Babelify for TsFnParam {
             TsFnParam::Array(a) => TsFnParamOutput::Array(a.babelify(ctx)),
             TsFnParam::Rest(r) => TsFnParamOutput::Rest(r.babelify(ctx)),
             TsFnParam::Object(o) => TsFnParamOutput::Object(o.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -166,6 +168,8 @@ impl Babelify for TsParamPropParam {
         match self {
             TsParamPropParam::Ident(i) => TSParamPropParam::Id(i.babelify(ctx)),
             TsParamPropParam::Assign(a) => TSParamPropParam::Assignment(a.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -189,6 +193,8 @@ impl Babelify for TsEntityName {
         match self {
             TsEntityName::TsQualifiedName(n) => TSEntityName::Qualified(n.babelify(ctx)),
             TsEntityName::Ident(i) => TSEntityName::Id(i.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -209,6 +215,8 @@ impl Babelify for TsTypeElement {
             TsTypeElement::TsIndexSignature(t) => TSTypeElement::IndexSignature(t.babelify(ctx)),
             TsTypeElement::TsGetterSignature(_) => panic!("unimplemented"),
             TsTypeElement::TsSetterSignature(_) => panic!("unimplemented"),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -354,6 +362,8 @@ impl Babelify for TsType {
             TsType::TsLitType(l) => TSType::Literal(l.babelify(ctx)),
             TsType::TsTypePredicate(p) => TSType::TypePredicate(p.babelify(ctx)),
             TsType::TsImportType(i) => TSType::Import(i.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -375,6 +385,8 @@ impl Babelify for TsFnOrConstructorType {
             TsFnOrConstructorType::TsConstructorType(t) => {
                 TsFnOrConstructorTypeOutput::Constructor(t.babelify(ctx))
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -444,6 +456,8 @@ impl Babelify for TsKeywordType {
                     base: ctx.base(self.span),
                 })
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -510,6 +524,8 @@ impl Babelify for TsThisTypeOrIdent {
         match self {
             TsThisTypeOrIdent::Ident(i) => TSTypePredicateParamName::Id(i.babelify(ctx)),
             TsThisTypeOrIdent::TsThisType(t) => TSTypePredicateParamName::This(t.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -532,6 +548,8 @@ impl Babelify for TsTypeQueryExpr {
         match self {
             TsTypeQueryExpr::TsEntityName(n) => TSTypeQueryExprName::EntityName(n.babelify(ctx)),
             TsTypeQueryExpr::Import(i) => TSTypeQueryExprName::ImportType(i.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -650,6 +668,8 @@ impl Babelify for TsUnionOrIntersectionType {
             TsUnionOrIntersectionType::TsIntersectionType(i) => {
                 TsUnionOrIntersectionTypeOutput::Intersection(i.babelify(ctx))
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -732,6 +752,8 @@ impl Babelify for TsTypeOperatorOp {
             TsTypeOperatorOp::KeyOf => "keyof".into(),
             TsTypeOperatorOp::Unique => "unique".into(),
             TsTypeOperatorOp::ReadOnly => "readonly".into(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -905,6 +927,8 @@ impl Babelify for TsEnumMemberId {
         match self {
             TsEnumMemberId::Ident(i) => IdOrString::Id(i.babelify(ctx)),
             TsEnumMemberId::Str(s) => IdOrString::String(s.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -930,6 +954,8 @@ impl Babelify for TsNamespaceBody {
         match self {
             TsNamespaceBody::TsModuleBlock(b) => TSModuleDeclBody::Block(b.babelify(ctx)),
             TsNamespaceBody::TsNamespaceDecl(d) => TSModuleDeclBody::Decl(d.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -970,6 +996,8 @@ impl Babelify for TsModuleName {
         match self {
             TsModuleName::Ident(i) => IdOrString::Id(i.babelify(ctx)),
             TsModuleName::Str(s) => IdOrString::String(s.babelify(ctx)),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -996,6 +1024,8 @@ impl Babelify for TsModuleRef {
             TsModuleRef::TsExternalModuleRef(e) => {
                 TSImportEqualsDeclModuleRef::External(e.babelify(ctx))
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -1076,6 +1106,8 @@ impl Babelify for Accessibility {
             Accessibility::Public => Access::Public,
             Accessibility::Protected => Access::Protected,
             Accessibility::Private => Access::Private,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_html_ast/src/base.rs b/crates/swc_html_ast/src/base.rs
index 7bbb4f7a816a..7881fb4a00f7 100644
--- a/crates/swc_html_ast/src/base.rs
+++ b/crates/swc_html_ast/src/base.rs
@@ -39,7 +39,7 @@ pub enum DocumentMode {
     Quirks,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Child {
     #[tag("DocumentType")]
diff --git a/crates/swc_html_minifier/Cargo.toml b/crates/swc_html_minifier/Cargo.toml
index 42859eb33a53..c13600214ee9 100644
--- a/crates/swc_html_minifier/Cargo.toml
+++ b/crates/swc_html_minifier/Cargo.toml
@@ -15,6 +15,9 @@ version = "33.0.0"
 [lib]
 bench = false
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [features]
 custom-css-minifier = []
 default = ["default-css-minifier"]
diff --git a/crates/swc_html_minifier/src/lib.rs b/crates/swc_html_minifier/src/lib.rs
index f85127c4d8df..2d5916e94a6e 100644
--- a/crates/swc_html_minifier/src/lib.rs
+++ b/crates/swc_html_minifier/src/lib.rs
@@ -1924,6 +1924,8 @@ impl<C: MinifyCss> Minifier<'_, C> {
                     unreachable!();
                 }
             },
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
 
         if is_modules {
diff --git a/crates/swc_ts_fast_strip/Cargo.toml b/crates/swc_ts_fast_strip/Cargo.toml
index 131246c3be05..9f83b72a38eb 100644
--- a/crates/swc_ts_fast_strip/Cargo.toml
+++ b/crates/swc_ts_fast_strip/Cargo.toml
@@ -9,6 +9,8 @@ name          = "swc_ts_fast_strip"
 repository    = { workspace = true }
 version       = "33.0.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
 
 [features]
 default = []
diff --git a/crates/swc_ts_fast_strip/src/lib.rs b/crates/swc_ts_fast_strip/src/lib.rs
index 77c22cdba357..2436f390295d 100644
--- a/crates/swc_ts_fast_strip/src/lib.rs
+++ b/crates/swc_ts_fast_strip/src/lib.rs
@@ -1590,6 +1590,8 @@ impl IsTsDecl for DefaultDecl {
             Self::Class(..) => false,
             Self::Fn(r#fn) => r#fn.function.body.is_none(),
             Self::TsInterfaceDecl(..) => true,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -1605,6 +1607,8 @@ impl IsUninstantiated for TsNamespaceBody {
                 block.body.iter().all(IsUninstantiated::is_uninstantiated)
             }
             Self::TsNamespaceDecl(decl) => decl.body.is_uninstantiated(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_typescript/Cargo.toml b/crates/swc_typescript/Cargo.toml
index 0a87a8656438..a448ecb941e4 100644
--- a/crates/swc_typescript/Cargo.toml
+++ b/crates/swc_typescript/Cargo.toml
@@ -8,6 +8,9 @@ name          = "swc_typescript"
 repository    = { workspace = true }
 version       = "20.0.0"
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(swc_ast_unknown)'] }
+
 [dependencies]
 bitflags = {workspace = true }
 petgraph   = { workspace = true }
diff --git a/crates/swc_typescript/src/fast_dts/class.rs b/crates/swc_typescript/src/fast_dts/class.rs
index 03d194d3a9c7..0ebdc220bce9 100644
--- a/crates/swc_typescript/src/fast_dts/class.rs
+++ b/crates/swc_typescript/src/fast_dts/class.rs
@@ -165,6 +165,8 @@ impl FastDts {
                                 }
                             }
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
 
                     // Transform return
@@ -189,6 +191,8 @@ impl FastDts {
                             }
                         }
                         MethodKind::Setter => method.function.return_type = None,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
 
                     method.function.body = None;
@@ -246,6 +250,8 @@ impl FastDts {
                     class.body.push(member);
                 }
                 ClassMember::Empty(_) | ClassMember::StaticBlock(_) => {}
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -286,6 +292,8 @@ impl FastDts {
                     is_required |= match &ts_param_prop.param {
                         TsParamPropParam::Ident(binding_ident) => !binding_ident.optional,
                         TsParamPropParam::Assign(_) => false,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     };
                     if let Some(private_prop) =
                         self.transform_constructor_ts_param(ts_param_prop, is_required)
@@ -306,8 +314,12 @@ impl FastDts {
                         Pat::Array(array_pat) => !array_pat.optional,
                         Pat::Object(object_pat) => !object_pat.optional,
                         Pat::Assign(_) | Pat::Invalid(_) | Pat::Expr(_) | Pat::Rest(_) => false,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
         private_properties.reverse();
@@ -359,9 +371,13 @@ impl FastDts {
                         Pat::Assign(_) | Pat::Rest(_) | Pat::Invalid(_) | Pat::Expr(_) => {
                             return None
                         }
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     },
                 )
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         // 3. Add undefined type if needed: only when explicit '?' is present
@@ -386,6 +402,8 @@ impl FastDts {
                 .left
                 .as_ident()
                 .map(|binding_ident| binding_ident.id.clone()),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         })?;
 
         let type_ann = if ts_param_prop
@@ -401,7 +419,11 @@ impl FastDts {
                     Pat::Array(array_pat) => array_pat.type_ann.clone(),
                     Pat::Object(object_pat) => object_pat.type_ann.clone(),
                     Pat::Assign(_) | Pat::Rest(_) | Pat::Invalid(_) | Pat::Expr(_) => None,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         };
 
diff --git a/crates/swc_typescript/src/fast_dts/decl.rs b/crates/swc_typescript/src/fast_dts/decl.rs
index 896acb8770fa..1bbd6fd3e95a 100644
--- a/crates/swc_typescript/src/fast_dts/decl.rs
+++ b/crates/swc_typescript/src/fast_dts/decl.rs
@@ -123,6 +123,8 @@ impl FastDts {
                     }
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -196,6 +198,8 @@ impl FastDts {
                 );
             }
             DefaultDecl::TsInterfaceDecl(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
     }
 
@@ -213,6 +217,8 @@ impl FastDts {
             TsNamespaceBody::TsNamespaceDecl(ts_ns) => {
                 self.transform_ts_namespace_decl(&mut ts_ns.body, ts_ns.global)
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
         self.is_top_level = original_is_top_level;
     }
diff --git a/crates/swc_typescript/src/fast_dts/enum.rs b/crates/swc_typescript/src/fast_dts/enum.rs
index 23901543f797..c3d58a916e8a 100644
--- a/crates/swc_typescript/src/fast_dts/enum.rs
+++ b/crates/swc_typescript/src/fast_dts/enum.rs
@@ -39,6 +39,8 @@ impl FastDts {
                 let member_name = match &member.id {
                     TsEnumMemberId::Ident(ident) => &ident.sym,
                     TsEnumMemberId::Str(s) => &s.value,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 };
                 prev_members.insert(member_name.clone(), value.clone());
             }
@@ -95,6 +97,8 @@ impl FastDts {
                 Lit::Null(_) | Lit::BigInt(_) | Lit::Bool(_) | Lit::Regex(_) | Lit::JSXText(_) => {
                     None
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Expr::Tpl(tpl) => {
                 let mut value = String::new();
diff --git a/crates/swc_typescript/src/fast_dts/function.rs b/crates/swc_typescript/src/fast_dts/function.rs
index 2300e07ab56e..5078c3222d02 100644
--- a/crates/swc_typescript/src/fast_dts/function.rs
+++ b/crates/swc_typescript/src/fast_dts/function.rs
@@ -43,6 +43,8 @@ impl FastDts {
                 Pat::Array(array_pat) => !array_pat.optional,
                 Pat::Object(object_pat) => !object_pat.optional,
                 Pat::Assign(_) | Pat::Invalid(_) | Pat::Expr(_) | Pat::Rest(_) => false,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             };
             self.transform_fn_param(param, is_required);
         }
@@ -89,10 +91,14 @@ impl FastDts {
                         Pat::Array(array_pat) => array_pat.type_ann.as_mut(),
                         Pat::Object(object_pat) => object_pat.type_ann.as_mut(),
                         Pat::Assign(_) | Pat::Rest(_) | Pat::Invalid(_) | Pat::Expr(_) => return,
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     },
                 )
             }
             Pat::Rest(_) | Pat::Expr(_) | Pat::Invalid(_) => (false, None),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         // 3. Add undefined type if needed
@@ -131,6 +137,8 @@ impl FastDts {
             }
             // These are illegal
             Pat::Assign(_) | Pat::Rest(_) | Pat::Invalid(_) | Pat::Expr(_) => return true,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         let mut has_expclicit_type = true;
diff --git a/crates/swc_typescript/src/fast_dts/inferrer.rs b/crates/swc_typescript/src/fast_dts/inferrer.rs
index 3159ccdfda04..8f1f3e5dabb6 100644
--- a/crates/swc_typescript/src/fast_dts/inferrer.rs
+++ b/crates/swc_typescript/src/fast_dts/inferrer.rs
@@ -24,6 +24,8 @@ impl FastDts {
                 Lit::BigInt(_) => Some(ts_keyword_type(TsKeywordTypeKind::TsBigIntKeyword)),
                 Lit::Null(_) => Some(ts_keyword_type(TsKeywordTypeKind::TsNullKeyword)),
                 Lit::Regex(_) | Lit::JSXText(_) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Expr::Tpl(_) => Some(ts_keyword_type(TsKeywordTypeKind::TsStringKeyword)),
             Expr::Fn(fn_expr) => self.transform_fn_to_ts_type(
@@ -86,6 +88,8 @@ impl FastDts {
                 ReturnTypeInferrer::infer(self, &block_stmt.stmts)
             }
             BlockStmtOrExpr::Expr(expr) => self.infer_type_from_expr(expr),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
         .map(type_ann)
     }
diff --git a/crates/swc_typescript/src/fast_dts/mod.rs b/crates/swc_typescript/src/fast_dts/mod.rs
index 0043b1e1c16b..b701d1cdf517 100644
--- a/crates/swc_typescript/src/fast_dts/mod.rs
+++ b/crates/swc_typescript/src/fast_dts/mod.rs
@@ -84,6 +84,8 @@ impl FastDts {
         match program {
             Program::Module(module) => self.transform_module_body(&mut module.body, false),
             Program::Script(script) => self.transform_script(script),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
         take(&mut self.diagnostics)
     }
@@ -287,6 +289,8 @@ impl FastDts {
                         _ => unreachable!(),
                     };
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
     }
@@ -498,6 +502,8 @@ impl FastDts {
                             .as_ident()
                             .map_or(true, |ident| used_refs.used_as_type(&ident.to_id()))
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             ModuleItem::ModuleDecl(ModuleDecl::Import(import_decl)) => {
                 if import_decl.specifiers.is_empty() {
@@ -510,6 +516,8 @@ impl FastDts {
                     ImportSpecifier::Namespace(specifier) => {
                         used_refs.used(&specifier.local.to_id())
                     }
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 });
 
                 !import_decl.specifiers.is_empty()
diff --git a/crates/swc_typescript/src/fast_dts/types.rs b/crates/swc_typescript/src/fast_dts/types.rs
index b49e0062aa41..9c61cac3e0df 100644
--- a/crates/swc_typescript/src/fast_dts/types.rs
+++ b/crates/swc_typescript/src/fast_dts/types.rs
@@ -32,6 +32,8 @@ impl FastDts {
                 Lit::Num(number) => Some(ts_lit_type(TsLit::Number(number.clone()))),
                 Lit::BigInt(big_int) => Some(ts_lit_type(TsLit::BigInt(big_int.clone()))),
                 Lit::Regex(_) | Lit::JSXText(_) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Expr::Tpl(tpl) => self
                 .tpl_to_string(tpl)
@@ -136,6 +138,8 @@ impl FastDts {
                 Pat::Rest(rest_pat) => Some(TsFnParam::Rest(rest_pat)),
                 Pat::Object(object_pat) => Some(TsFnParam::Object(object_pat)),
                 Pat::Assign(_) | Pat::Invalid(_) | Pat::Expr(_) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             })
             .collect()
     }
@@ -294,10 +298,14 @@ impl FastDts {
                         }
                     }
                     Prop::Assign(_) => {}
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 },
                 PropOrSpread::Spread(spread_element) => {
                     self.object_with_spread_assignments(spread_element.span());
                 }
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             }
         }
 
@@ -389,6 +397,8 @@ impl FastDts {
 
                 computed.expr.as_ref().clone()
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
diff --git a/crates/swc_typescript/src/fast_dts/util/ast_ext.rs b/crates/swc_typescript/src/fast_dts/util/ast_ext.rs
index 4583fd4e6555..51609f79d739 100644
--- a/crates/swc_typescript/src/fast_dts/util/ast_ext.rs
+++ b/crates/swc_typescript/src/fast_dts/util/ast_ext.rs
@@ -82,6 +82,8 @@ impl PatExt for Pat {
             Pat::Rest(rest_pat) => &rest_pat.type_ann,
             Pat::Object(object_pat) => &object_pat.type_ann,
             Pat::Assign(_) | Pat::Invalid(_) | Pat::Expr(_) => &None,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -97,6 +99,8 @@ impl PatExt for Pat {
             Pat::Rest(rest_pat) => rest_pat.type_ann = type_anno,
             Pat::Object(object_pat) => object_pat.type_ann = type_anno,
             Pat::Assign(_) | Pat::Invalid(_) | Pat::Expr(_) => {}
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -117,11 +121,15 @@ impl PatExt for Pat {
                         }
                         ObjectPatProp::Assign(assign_pat_prop) => f(&assign_pat_prop.key),
                         ObjectPatProp::Rest(rest_pat) => rest_pat.arg.bound_names(f),
+                        #[cfg(swc_ast_unknown)]
+                        _ => panic!("unable to access unknown nodes"),
                     }
                 }
             }
             Pat::Assign(assign_pat) => assign_pat.left.bound_names(f),
             Pat::Invalid(_) | Pat::Expr(_) => todo!(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -139,6 +147,8 @@ impl PropNameExit for PropName {
             PropName::Num(number) => Some(Cow::Owned(number.value.to_string())),
             PropName::BigInt(big_int) => Some(Cow::Owned(big_int.value.to_string())),
             PropName::Computed(computed_prop_name) => computed_prop_name.static_name(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -161,6 +171,8 @@ impl PropNameExit for ComputedPropName {
                 Lit::BigInt(big_int) => Some(Cow::Owned(big_int.value.to_string())),
                 Lit::Regex(regex) => Some(Cow::Owned(regex.exp.to_string())),
                 Lit::JSXText(_) => None,
+                #[cfg(swc_ast_unknown)]
+                _ => panic!("unable to access unknown nodes"),
             },
             Expr::Tpl(tpl) if tpl.exprs.is_empty() => tpl
                 .quasis
@@ -184,6 +196,8 @@ impl PropNameExit for ComputedPropName {
                         c.static_name().map(Into::into).map(StaticProp::Symbol)
                     }
                     MemberProp::PrivateName(..) => None,
+                    #[cfg(swc_ast_unknown)]
+                    _ => panic!("unable to access unknown nodes"),
                 }),
             _ => self.static_name().map(Into::into).map(StaticProp::Name),
         }
@@ -199,6 +213,8 @@ impl PropNameExit for Prop {
             Self::Getter(getter_prop) => getter_prop.key.static_name(),
             Self::Setter(setter_prop) => setter_prop.key.static_name(),
             Self::Method(method_prop) => method_prop.key.static_name(),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -210,6 +226,8 @@ impl PropNameExit for Prop {
             Self::Getter(getter_prop) => getter_prop.key.static_prop(unresolved_mark),
             Self::Setter(setter_prop) => setter_prop.key.static_prop(unresolved_mark),
             Self::Method(method_prop) => method_prop.key.static_prop(unresolved_mark),
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
@@ -230,6 +248,8 @@ impl MemberPropExt for MemberProp {
                 _ => None,
             },
             MemberProp::PrivateName(_) => None,
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 }
diff --git a/crates/swc_typescript/src/fast_dts/visitors/type_usage.rs b/crates/swc_typescript/src/fast_dts/visitors/type_usage.rs
index a0ebd217d29e..89102c1e128f 100644
--- a/crates/swc_typescript/src/fast_dts/visitors/type_usage.rs
+++ b/crates/swc_typescript/src/fast_dts/visitors/type_usage.rs
@@ -224,6 +224,8 @@ impl Visit for TypeUsageAnalyzer<'_> {
                 };
                 self.add_edge(Symbol::new(ident.to_id(), flag), true);
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
     }
 
@@ -326,6 +328,8 @@ impl Visit for TypeUsageAnalyzer<'_> {
                     self.scope_entries.pop();
                 }
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         }
     }
 
@@ -428,6 +432,8 @@ impl Visit for TypeUsageAnalyzer<'_> {
                     .is_some_and(|accessibility| accessibility == Accessibility::Private)
                     || auto_accessor.key.is_private()
             }
+            #[cfg(swc_ast_unknown)]
+            _ => panic!("unable to access unknown nodes"),
         };
 
         if is_private {
diff --git a/crates/swc_xml_ast/src/base.rs b/crates/swc_xml_ast/src/base.rs
index 2133c6fa2d6f..865c1d85e71f 100644
--- a/crates/swc_xml_ast/src/base.rs
+++ b/crates/swc_xml_ast/src/base.rs
@@ -20,7 +20,7 @@ pub enum DocumentMode {
     Quirks,
 }
 
-#[ast_node]
+#[ast_node(no_unknown)]
 #[derive(Eq, Hash, Is, EqIgnoreSpan)]
 pub enum Child {
     #[tag("DocumentType")]
diff --git a/tools/generate-code/src/generators/visitor.rs b/tools/generate-code/src/generators/visitor.rs
index f43e7e23c14f..17ac5fcdebf5 100644
--- a/tools/generate-code/src/generators/visitor.rs
+++ b/tools/generate-code/src/generators/visitor.rs
@@ -9,7 +9,9 @@ use syn::{
     LitInt, Path, PathArguments, Stmt, TraitItem, Type,
 };
 
-pub fn generate(crate_name: &Ident, node_types: &[&Item], excluded_types: &[String]) -> File {
+pub fn generate(crate_name_str: &str, node_types: &[&Item], excluded_types: &[String]) -> File {
+    let crate_name = Ident::new(crate_name_str, Span::call_site());
+    let crate_name = &crate_name;
     let mut output = File {
         shebang: None,
         attrs: Vec::new(),
@@ -70,6 +72,7 @@ pub fn generate(crate_name: &Ident, node_types: &[&Item], excluded_types: &[Stri
     for &kind in [TraitKind::Visit, TraitKind::VisitMut, TraitKind::Fold].iter() {
         for &variant in [Variant::Normal, Variant::AstPath].iter() {
             let g = Generator {
+                has_unknown: crate_name_str == "swc_ecma_ast",
                 kind,
                 variant,
                 excluded_types,
@@ -307,6 +310,7 @@ impl Variant {
 }
 
 struct Generator<'a> {
+    has_unknown: bool,
     kind: TraitKind,
     variant: Variant,
 
@@ -684,7 +688,21 @@ impl Generator<'_> {
                         ));
                     }
 
-                    parse_quote!(match self { #(#match_arms)* })
+                    match (self.has_unknown, self.kind) {
+                        (false, _) => parse_quote!(match self {
+                            #(#match_arms)*
+                        }),
+                        (true, TraitKind::Visit | TraitKind::VisitMut) => parse_quote!(match self {
+                            #(#match_arms)*
+                            #[cfg(swc_ast_unknown)]
+                            _ => ()
+                        }),
+                        (true, TraitKind::Fold) => parse_quote!(match self {
+                            #(#match_arms)*
+                            #[cfg(swc_ast_unknown)]
+                            _ => self
+                        }),
+                    }
                 }
                 Item::Struct(data) => {
                     let name = &data.ident;
diff --git a/tools/generate-code/src/main.rs b/tools/generate-code/src/main.rs
index f75be2244ec5..4329961fad3b 100644
--- a/tools/generate-code/src/main.rs
+++ b/tools/generate-code/src/main.rs
@@ -4,9 +4,8 @@ use std::path::{Path, PathBuf};
 
 use anyhow::{bail, Context, Result};
 use clap::Parser;
-use proc_macro2::Span;
 use swc_config::regex::CachedRegex;
-use syn::{Ident, Item};
+use syn::Item;
 
 use crate::types::qualify_types;
 
@@ -41,10 +40,7 @@ fn main() -> Result<()> {
 }
 
 fn run_visitor_codegen(input_dir: &Path, output: &Path, excluded_types: &[String]) -> Result<()> {
-    let crate_name = Ident::new(
-        input_dir.file_name().unwrap().to_str().unwrap(),
-        Span::call_site(),
-    );
+    let crate_name = input_dir.file_name().unwrap().to_str().unwrap();
 
     let input_dir = input_dir
         .canonicalize()
@@ -89,7 +85,7 @@ fn run_visitor_codegen(input_dir: &Path, output: &Path, excluded_types: &[String
         _ => None,
     });
 
-    let file = generators::visitor::generate(&crate_name, &all_type_defs, excluded_types);
+    let file = generators::visitor::generate(crate_name, &all_type_defs, excluded_types);
 
     let output_content = quote::quote!(#file).to_string();