diff --git a/crates/oxc_codegen/src/binary_expr_visitor.rs b/crates/oxc_codegen/src/binary_expr_visitor.rs
index 87fa28205..852699f46 100644
--- a/crates/oxc_codegen/src/binary_expr_visitor.rs
+++ b/crates/oxc_codegen/src/binary_expr_visitor.rs
@@ -12,7 +12,7 @@ use oxc_syntax::{
 use crate::{gen::GenExpr, Codegen, Context, Operator};
 
 #[derive(Clone, Copy)]
-pub enum Binaryish<'a> {
+pub(crate) enum Binaryish<'a> {
     Binary(&'a BinaryExpression<'a>),
     Logical(&'a LogicalExpression<'a>),
 }
diff --git a/crates/oxc_codegen/src/comment.rs b/crates/oxc_codegen/src/comment.rs
index b4f48090c..29bf12f48 100644
--- a/crates/oxc_codegen/src/comment.rs
+++ b/crates/oxc_codegen/src/comment.rs
@@ -7,16 +7,16 @@ use oxc_syntax::identifier::is_line_terminator;
 
 use crate::Codegen;
 
-pub static ANNOTATION_MATCHER: Lazy<DoubleArrayAhoCorasick<usize>> = Lazy::new(|| {
+static ANNOTATION_MATCHER: Lazy<DoubleArrayAhoCorasick<usize>> = Lazy::new(|| {
     let patterns = vec!["#__NO_SIDE_EFFECTS__", "@__NO_SIDE_EFFECTS__", "@__PURE__", "#__PURE__"];
 
     DoubleArrayAhoCorasick::new(patterns).unwrap()
 });
 
-pub type CommentsMap = FxHashMap</* attached_to */ u32, Vec<Comment>>;
+pub(crate) type CommentsMap = FxHashMap</* attached_to */ u32, Vec<Comment>>;
 
 impl<'a> Codegen<'a> {
-    pub fn preserve_annotate_comments(&self) -> bool {
+    pub(crate) fn preserve_annotate_comments(&self) -> bool {
         self.comment_options.preserve_annotate_comments && !self.options.minify
     }
 
@@ -26,11 +26,11 @@ impl<'a> Codegen<'a> {
         }
     }
 
-    pub fn has_comment(&self, start: u32) -> bool {
+    pub(crate) fn has_comment(&self, start: u32) -> bool {
         self.comments.contains_key(&start)
     }
 
-    pub fn has_annotation_comment(&self, start: u32) -> bool {
+    pub(crate) fn has_annotation_comment(&self, start: u32) -> bool {
         if !self.preserve_annotate_comments() {
             return false;
         }
@@ -40,7 +40,7 @@ impl<'a> Codegen<'a> {
         })
     }
 
-    pub fn has_non_annotation_comment(&self, start: u32) -> bool {
+    pub(crate) fn has_non_annotation_comment(&self, start: u32) -> bool {
         if !self.preserve_annotate_comments() {
             return self.has_comment(start);
         }
diff --git a/crates/oxc_codegen/src/operator.rs b/crates/oxc_codegen/src/operator.rs
index 8c5fb8089..d30f36dde 100644
--- a/crates/oxc_codegen/src/operator.rs
+++ b/crates/oxc_codegen/src/operator.rs
@@ -1,7 +1,7 @@
 use oxc_syntax::operator::{BinaryOperator, UnaryOperator, UpdateOperator};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub enum Operator {
+pub(crate) enum Operator {
     Binary(BinaryOperator),
     Unary(UnaryOperator),
     Update(UpdateOperator),