diff --git a/crates/oxc_syntax/src/class.rs b/crates/oxc_syntax/src/class.rs
index 198e0712cf75b0..d9ed01b17e25b8 100644
--- a/crates/oxc_syntax/src/class.rs
+++ b/crates/oxc_syntax/src/class.rs
@@ -20,18 +20,22 @@ bitflags! {
 }
 
 impl ElementKind {
+    #[inline]
     pub fn is_property(self) -> bool {
         self.contains(Self::Property)
     }
 
+    #[inline]
     pub fn is_method(self) -> bool {
         self.contains(Self::Method)
     }
 
+    #[inline]
     pub fn is_accessor(self) -> bool {
         self.contains(Self::Accessor)
     }
 
+    #[inline]
     pub fn is_setter_or_getter(self) -> bool {
         self.intersects(Self::Setter | Self::Getter)
     }
diff --git a/crates/oxc_syntax/src/reference.rs b/crates/oxc_syntax/src/reference.rs
index a6dba1433604ec..27305dfd5db03d 100644
--- a/crates/oxc_syntax/src/reference.rs
+++ b/crates/oxc_syntax/src/reference.rs
@@ -99,57 +99,69 @@ bitflags! {
 }
 
 impl ReferenceFlag {
+    #[inline]
     pub const fn read() -> Self {
         Self::Read
     }
 
+    #[inline]
     pub const fn write() -> Self {
         Self::Write
     }
 
+    #[inline]
     pub const fn read_write() -> Self {
         Self::Value
     }
 
     /// The identifier is read from. It may also be written to.
+    #[inline]
     pub const fn is_read(&self) -> bool {
         self.intersects(Self::Read)
     }
 
     /// The identifier is only read from.
+    #[inline]
     pub const fn is_read_only(&self) -> bool {
         self.contains(Self::Read)
     }
 
     /// The identifier is written to. It may also be read from.
+    #[inline]
     pub const fn is_write(&self) -> bool {
         self.intersects(Self::Write)
     }
 
     /// The identifier is only written to. It is not read from in this reference.
+    #[inline]
     pub const fn is_write_only(&self) -> bool {
         self.contains(Self::Write)
     }
 
     /// The identifier is both read from and written to, e.g `a += 1`.
+    #[inline]
     pub fn is_read_write(&self) -> bool {
         self.contains(Self::Read | Self::Write)
     }
 
     /// The identifier is used in a type referenced
+    #[inline]
     pub fn is_ts_type_query(&self) -> bool {
         self.contains(Self::TSTypeQuery)
     }
 
     /// The identifier is used in a type definition.
+    #[inline]
     pub const fn is_type(&self) -> bool {
         self.contains(Self::Type)
     }
 
+    #[inline]
     pub const fn is_type_only(self) -> bool {
         matches!(self, Self::Type)
     }
 
+    #[inline]
     pub const fn is_value(&self) -> bool {
         self.intersects(Self::Value)
     }
diff --git a/crates/oxc_syntax/src/scope.rs b/crates/oxc_syntax/src/scope.rs
index dd6e064d15248d..3bf3a7b223f43a 100644
--- a/crates/oxc_syntax/src/scope.rs
+++ b/crates/oxc_syntax/src/scope.rs
@@ -81,6 +81,7 @@ bitflags! {
 
 impl ScopeFlags {
     #[must_use]
+    #[inline]
     pub fn with_strict_mode(self, yes: bool) -> Self {
         if yes {
             self | Self::StrictMode
@@ -89,50 +90,62 @@ impl ScopeFlags {
         }
     }
 
+    #[inline]
     pub fn is_strict_mode(&self) -> bool {
         self.contains(Self::StrictMode)
     }
 
+    #[inline]
     pub fn is_block(&self) -> bool {
         self.is_empty() || *self == Self::StrictMode
     }
 
+    #[inline]
     pub fn is_top(&self) -> bool {
         self.contains(Self::Top)
     }
 
+    #[inline]
     pub fn is_function(&self) -> bool {
         self.contains(Self::Function)
     }
 
+    #[inline]
     pub fn is_arrow(&self) -> bool {
         self.contains(Self::Arrow)
     }
 
+    #[inline]
     pub fn is_constructor(&self) -> bool {
         self.contains(Self::Constructor)
     }
 
+    #[inline]
     pub fn is_class_static_block(&self) -> bool {
         self.contains(Self::ClassStaticBlock)
     }
 
+    #[inline]
     pub fn is_ts_module_block(&self) -> bool {
         self.contains(Self::TsModuleBlock)
     }
 
+    #[inline]
     pub fn is_var(&self) -> bool {
         self.intersects(Self::Var)
     }
 
+    #[inline]
     pub fn is_set_accessor(&self) -> bool {
         self.contains(Self::SetAccessor)
     }
 
+    #[inline]
     pub fn is_set_or_get_accessor(&self) -> bool {
         self.intersects(Self::SetAccessor | Self::GetAccessor)
     }
 
+    #[inline]
     pub fn is_catch_clause(&self) -> bool {
         self.contains(Self::CatchClause)
     }
diff --git a/crates/oxc_syntax/src/symbol.rs b/crates/oxc_syntax/src/symbol.rs
index 7dc08bcd1e863e..671891f14f3747 100644
--- a/crates/oxc_syntax/src/symbol.rs
+++ b/crates/oxc_syntax/src/symbol.rs
@@ -123,78 +123,96 @@ bitflags! {
 }
 
 impl SymbolFlags {
+    #[inline]
     pub fn is_variable(&self) -> bool {
         self.intersects(Self::Variable)
     }
 
+    #[inline]
     pub fn is_type_parameter(&self) -> bool {
         self.contains(Self::TypeParameter)
     }
 
     /// If true, then the symbol is a type, such as a TypeAlias, Interface, or Enum
+    #[inline]
     pub fn is_type(&self) -> bool {
         self.intersects((Self::TypeImport | Self::Type) - Self::Value)
     }
 
     /// If true, then the symbol is a value, such as a Variable, Function, or Class
+    #[inline]
     pub fn is_value(&self) -> bool {
         self.intersects(Self::Value | Self::Import | Self::Function)
     }
 
+    #[inline]
     pub fn is_const_variable(&self) -> bool {
         self.contains(Self::ConstVariable)
     }
 
+    #[inline]
     pub fn is_function(&self) -> bool {
         self.contains(Self::Function)
     }
 
+    #[inline]
     pub fn is_class(&self) -> bool {
         self.contains(Self::Class)
     }
 
+    #[inline]
     pub fn is_interface(&self) -> bool {
         self.contains(Self::Interface)
     }
 
+    #[inline]
     pub fn is_type_alias(&self) -> bool {
         self.contains(Self::TypeAlias)
     }
 
+    #[inline]
     pub fn is_enum(&self) -> bool {
         self.intersects(Self::Enum)
     }
 
+    #[inline]
     pub fn is_enum_member(&self) -> bool {
         self.contains(Self::EnumMember)
     }
 
+    #[inline]
     pub fn is_catch_variable(&self) -> bool {
         self.contains(Self::CatchVariable)
     }
 
+    #[inline]
     pub fn is_function_scoped_declaration(&self) -> bool {
         self.contains(Self::FunctionScopedVariable)
     }
 
+    #[inline]
     pub fn is_export(&self) -> bool {
         self.contains(Self::Export)
     }
 
+    #[inline]
     pub fn is_import(&self) -> bool {
         self.intersects(Self::Import | Self::TypeImport)
     }
 
+    #[inline]
     pub fn is_type_import(&self) -> bool {
         self.contains(Self::TypeImport)
     }
 
     /// If true, then the symbol can be referenced by a type
+    #[inline]
     pub fn can_be_referenced_by_type(&self) -> bool {
         self.intersects(Self::Type | Self::TypeImport | Self::Import)
     }
 
     /// If true, then the symbol can be referenced by a value
+    #[inline]
     pub fn can_be_referenced_by_value(&self) -> bool {
         self.intersects(Self::Value | Self::Import | Self::Function)
     }