Use dummy as sentinel

crates/oxc_semantic/src/builder.rs

@@ -92,7 +92,7 @@ pub struct SemanticBuilder<'a> {
 
     pub class_table_builder: ClassTableBuilder,
 
-    ast_node_records: Vec<Option<AstNodeId>>,
+    ast_node_records: Vec<AstNodeId>,
 }
 
 pub struct SemanticBuilderReturn<'a> {
@@ -251,13 +251,13 @@ impl<'a> SemanticBuilder<'a> {
 
     fn record_ast_nodes(&mut self) {
         if self.cfg.is_some() {
-            self.ast_node_records.push(None);
+            self.ast_node_records.push(AstNodeId::dummy());
         }
     }
 
     fn retrieve_recorded_ast_node(&mut self) -> Option<AstNodeId> {
         if self.cfg.is_some() {
-            self.ast_node_records.pop().expect("there is no ast node record to stop.")
+            Some(self.ast_node_records.pop().expect("there is no ast node record to stop."))
         } else {
             None
         }
@@ -266,8 +266,8 @@ impl<'a> SemanticBuilder<'a> {
     fn record_ast_node(&mut self) {
         if self.cfg.is_some() {
             if let Some(record) = self.ast_node_records.last_mut() {
-                if record.is_none() {
-                    *record = Some(self.current_node_id);
+                if *record == AstNodeId::dummy() {
+                    *record = self.current_node_id;
                 }
             }
         }