From 5d917dc57ba746ff19a17fa8378e6a0b498841b4 Mon Sep 17 00:00:00 2001
From: robobun <117481402+robobun@users.noreply.github.com>
Date: Thu, 15 Oct 2026 15:58:42 +0000
Subject: [PATCH] Remove dead code: 6 trait impls nothing uses in bun_sema and
 bun_format

---
 src/format/js/ast_nodes.rs |  7 -------
 src/sema/hir.rs            |  6 ------
 src/sema/local.rs          | 12 ------------
 src/sema/table.rs          | 12 ------------
 src/sema/types.rs          |  9 ---------
 5 files changed, 46 deletions(-)

diff --git a/src/format/js/ast_nodes.rs b/src/format/js/ast_nodes.rs
index b9c69af19ad1..b165aa299c02 100644
--- a/src/format/js/ast_nodes.rs
+++ b/src/format/js/ast_nodes.rs
@@ -477,13 +477,6 @@ impl<'a> AsAstNodes<'a> for Func<'a> {
     }
 }
 
-impl<'a> AsAstNodes<'a> for Class<'a> {
-    #[inline]
-    fn as_ast_nodes(self) -> AstNodes<'a> {
-        AstNodes::Class(self)
-    }
-}
-
 impl<'a> AsAstNodes<'a> for Param<'a> {
     fn as_ast_nodes(self) -> AstNodes<'a> {
         match self.func().and_then(Func::this_param) {
diff --git a/src/sema/hir.rs b/src/sema/hir.rs
index fd0facffe548..4aaf7dbc2d48 100644
--- a/src/sema/hir.rs
+++ b/src/sema/hir.rs
@@ -71,12 +71,6 @@ define_id!(
     ParenId,
 );
 
-impl From<Atom> for u32 {
-    #[inline]
-    fn from(v: Atom) -> u32 {
-        v.0
-    }
-}
 impl From<u32> for Atom {
     #[inline]
     fn from(v: u32) -> Atom {
diff --git a/src/sema/local.rs b/src/sema/local.rs
index 75743790457c..a3029189f3a6 100644
--- a/src/sema/local.rs
+++ b/src/sema/local.rs
@@ -34,24 +34,12 @@ pub trait MaybeLocal {
     fn is_local(&self) -> bool;
 }
 
-impl MaybeLocal for () {
-    #[inline]
-    fn is_local(&self) -> bool {
-        false
-    }
-}
 impl MaybeLocal for bool {
     #[inline]
     fn is_local(&self) -> bool {
         false
     }
 }
-impl MaybeLocal for u8 {
-    #[inline]
-    fn is_local(&self) -> bool {
-        false
-    }
-}
 impl<T: MaybeLocal> MaybeLocal for Option<T> {
     #[inline]
     fn is_local(&self) -> bool {
diff --git a/src/sema/table.rs b/src/sema/table.rs
index 37226afef0c8..ccbcd2f48579 100644
--- a/src/sema/table.rs
+++ b/src/sema/table.rs
@@ -149,18 +149,6 @@ impl Packed for () {
     fn unpack(_: u32) {}
 }
 
-impl Packed for u8 {
-    type Cell = AtomicU32;
-    #[inline]
-    fn pack(self) -> u32 {
-        1 + u32::from(self)
-    }
-    #[inline]
-    fn unpack(raw: u32) -> u8 {
-        (raw - 1) as u8
-    }
-}
-
 impl Packed for (crate::types::TypeId, bool) {
     type Cell = AtomicU32;
     #[inline]
diff --git a/src/sema/types.rs b/src/sema/types.rs
index facbbfa4740b..c77511fd0b25 100644
--- a/src/sema/types.rs
+++ b/src/sema/types.rs
@@ -3097,15 +3097,6 @@ impl<T: Follow> Follow for Option<T> {
     }
 }
 
-impl<T: Follow> Follow for Box<T> {
-    fn visit<V: Visitor>(&self, visitor: &mut V) {
-        (**self).visit(visitor);
-    }
-    fn follow(&mut self, link: &Link) {
-        (**self).follow(link);
-    }
-}
-
 impl<T: Follow> Follow for [T] {
     fn visit<V: Visitor>(&self, visitor: &mut V) {
         visitor.plain(&self.len());