Fix span placement on type aliases
diff --git a/syntax/mod.rs b/syntax/mod.rs
index 77e7e64..12904c3 100644
--- a/syntax/mod.rs
+++ b/syntax/mod.rs
@@ -123,6 +123,7 @@
     pub doc: Doc,
     pub derives: Vec<Derive>,
     pub attrs: OtherAttrs,
+    pub visibility: Token![pub],
     pub type_token: Token![type],
     pub name: Pair,
     pub generics: Lifetimes,