feat: improve small file

crates/oxc_semantic/src/builder.rs

@@ -224,18 +224,24 @@ impl<'a> SemanticBuilder<'a> {
         if self.source_type.is_typescript_definition() {
             let scope_id = self.scope.add_scope(None, AstNodeId::DUMMY, ScopeFlags::Top);
             program.scope_id.set(Some(scope_id));
+        }
+
+        if self.source_text.len() < 4000 {
+            self.nodes.reserve(self.source_text.split_ascii_whitespace().count());
+            self.scope.reserve(program.body.len());
+            self.symbols.reserve(program.body.len(), program.body.len());
         } else {
             let mut collector = Collector::default();
             collector.visit_program(program);
             self.nodes.reserve(collector.node);
             self.scope.reserve(collector.scope);
             self.symbols.reserve(collector.symbol, collector.reference);
             self.visit_program(program);
+        }
 
-            // Checking syntax error on module record requires scope information from the previous AST pass
-            if self.check_syntax_error {
-                checker::check_module_record(&self);
-            }
+        // Checking syntax error on module record requires scope information from the previous AST pass
+        if self.check_syntax_error {
+            checker::check_module_record(&self);
         }
 
         debug_assert_eq!(self.current_scope_depth, 0);