feat(transformer): class properties transform

crates/oxc_transformer/src/common/helper_loader.rs

@@ -147,6 +147,11 @@ pub enum Helper {
     ObjectDestructuringEmpty,
     ObjectWithoutProperties,
     ToPropertyKey,
+    DefineProperty,
+    ClassPrivateFieldInitSpec,
+    ClassPrivateFieldGet2,
+    ClassPrivateFieldSet2,
+    AssertClassBrand,
 }
 
 impl Helper {
@@ -162,6 +167,11 @@ impl Helper {
             Self::ObjectDestructuringEmpty => "objectDestructuringEmpty",
             Self::ObjectWithoutProperties => "objectWithoutProperties",
             Self::ToPropertyKey => "toPropertyKey",
+            Self::DefineProperty => "defineProperty",
+            Self::ClassPrivateFieldInitSpec => "classPrivateFieldInitSpec",
+            Self::ClassPrivateFieldGet2 => "classPrivateFieldGet2",
+            Self::ClassPrivateFieldSet2 => "classPrivateFieldSet2",
+            Self::AssertClassBrand => "assertClassBrand",
         }
     }
 }

crates/oxc_transformer/src/common/var_declarations.rs

@@ -98,7 +98,6 @@ impl<'a> VarDeclarationsStore<'a> {
 
     /// Add a `let` declaration to be inserted at top of current enclosing statement block,
     /// given a `BoundIdentifier`.
-    #[expect(dead_code)]
     pub fn insert_let(
         &self,
         binding: &BoundIdentifier<'a>,

crates/oxc_transformer/src/compiler_assumptions.rs

@@ -81,7 +81,6 @@ pub struct CompilerAssumptions {
     pub set_computed_properties: bool,
 
     #[serde(default)]
-    #[deprecated = "Not Implemented"]
     pub set_public_class_fields: bool,
 
     #[serde(default)]