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Merged
merged 16 commits into from
Oct 12, 2025
Merged

refactor(ast_node): Make AST enums non_exhaustive #11115

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abd411a
make non_exhaustive
quininer Sep 22, 2025
fa1f606
fix ecma parser
quininer Sep 22, 2025
bc28563
fix ecma_codegen
quininer Sep 24, 2025
85b8b36
fix ecma_visit
quininer Sep 24, 2025
b8cd5e7
fix ecma_lints
quininer Sep 24, 2025
27da6df
make ecma_transforms_base
quininer Sep 25, 2025
4013fd3
make ecma_transforms (without compat)
quininer Sep 28, 2025
74f321a
make ecma_compat
quininer Sep 28, 2025
b8023c7
Use cfg
quininer Sep 28, 2025
d36e6b2
fix more
quininer Sep 29, 2025
a426e3a
make ecma_usage_analyzer
quininer Sep 29, 2025
3ed4e5f
make ecma_minifier
quininer Sep 29, 2025
9ff7d22
make more
quininer Sep 29, 2025
f37ebd4
fix fmt
quininer Sep 29, 2025
909addf
add unknown ci
quininer Sep 29, 2025
da866fd
Change package version from patch to major
kdy1 Oct 11, 2025
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5 changes: 5 additions & 0 deletions .changeset/smart-rats-smell.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
ast_node: major
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@kdy1 kdy1 Oct 11, 2025 •
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I added ast_node: major because I don't want to see complains about breaking changes published wrongly

---

refactor(ast): Make ast enum `non_exhaustive`
5 changes: 5 additions & 0 deletions .github/workflows/CI.yml
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Expand Up @@ -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: >-
Expand Down
38 changes: 22 additions & 16 deletions crates/ast_node/src/lib.rs
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Expand Up @@ -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)]
Expand All @@ -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)
Expand Down
1 change: 0 additions & 1 deletion crates/jsdoc/src/ast.rs
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Expand Up @@ -30,7 +30,6 @@ pub struct TagItem {
}

#[ast_node]
#[non_exhaustive]
pub enum Tag {
#[tag("Yield")]
Yield(YieldTag),
Expand Down
3 changes: 3 additions & 0 deletions crates/swc_bundler/Cargo.toml
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Expand Up @@ -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"]
Expand Down
4 changes: 4 additions & 0 deletions crates/swc_bundler/src/bundler/chunk/cjs.rs
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Expand Up @@ -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()
Expand Down Expand Up @@ -318,6 +320,8 @@ where
.into();
return;
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}

Expand Down
12 changes: 12 additions & 0 deletions crates/swc_bundler/src/bundler/chunk/computed_key.rs
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Expand Up @@ -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 {
Expand Down Expand Up @@ -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 {
Expand Down Expand Up @@ -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(),
Expand All @@ -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());
Expand All @@ -316,6 +324,8 @@ impl Fold for ExportToReturn {
}
}
},
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}

Expand All @@ -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 {
Expand Down
32 changes: 32 additions & 0 deletions crates/swc_bundler/src/bundler/chunk/merge.rs
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Expand Up @@ -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();
Expand All @@ -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"),
}
}
}
Expand Down Expand Up @@ -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,
},
Expand Down Expand Up @@ -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" {
Expand Down Expand Up @@ -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
Expand Down Expand Up @@ -665,6 +679,8 @@ where
);
}
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}

Expand Down Expand Up @@ -754,6 +770,8 @@ where
}
}
DefaultDecl::TsInterfaceDecl(_) => continue,
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}

// Create `export { local_default as default }`
Expand Down Expand Up @@ -926,6 +944,8 @@ where
| Decl::TsEnum(_)
| Decl::TsModule(_)
| Decl::Using(..) => continue,
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
};

tracing::trace!(
Expand Down Expand Up @@ -1023,6 +1043,8 @@ where
"module string names unimplemented"
)
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
};
}
ExportSpecifier::Default(s) => {
Expand Down Expand Up @@ -1069,6 +1091,8 @@ where
definite: Default::default(),
});
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}

Expand Down Expand Up @@ -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,
Expand Down Expand Up @@ -1202,6 +1228,8 @@ where
ModuleExportName::Str(..) => {
unimplemented!("module string names unimplemented")
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}
}
Expand Down Expand Up @@ -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,
Expand Down Expand Up @@ -1317,6 +1347,8 @@ where
continue;
}
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}

Expand Down
8 changes: 8 additions & 0 deletions crates/swc_bundler/src/bundler/export.rs
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Expand Up @@ -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) => {
Expand All @@ -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;
Expand All @@ -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;
Expand All @@ -280,6 +286,8 @@ where
}
}
}
#[cfg(swc_ast_unknown)]
_ => panic!("unable to access unknown nodes"),
}
}

Expand Down
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