feat(transformer): add BoundIdentifier::new_uid_in_current_scope method (#4903)

Add method `BoundIdentifier::new_uid_in_current_scope` as a shortcut.

crates/oxc_transformer/src/es2015/arrow_functions.rs

@@ -81,9 +81,8 @@ impl<'a> ArrowFunctions<'a> {
 
     fn get_this_name(&mut self, ctx: &mut TraverseCtx<'a>) -> BoundIdentifier<'a> {
         if self.this_var.is_none() {
-            self.this_var = Some(BoundIdentifier::new_uid(
+            self.this_var = Some(BoundIdentifier::new_uid_in_current_scope(
                 "this",
-                ctx.current_scope_id(),
                 SymbolFlags::FunctionScopedVariable,
                 ctx,
             ));

crates/oxc_transformer/src/helpers/bindings.rs

@@ -65,6 +65,16 @@ impl<'a> BoundIdentifier<'a> {
         Self::new_uid(name, scope_id, flags, ctx)
     }
 
+    /// Create `BoundIdentifier` for new binding in current scope
+    pub fn new_uid_in_current_scope(
+        name: &str,
+        flags: SymbolFlags,
+        ctx: &mut TraverseCtx<'a>,
+    ) -> Self {
+        let scope_id = ctx.current_scope_id();
+        Self::new_uid(name, scope_id, flags, ctx)
+    }
+
     /// Create `BindingIdentifier` for this binding
     pub fn create_binding_identifier(&self) -> BindingIdentifier<'a> {
         BindingIdentifier {