Using re-export instead of type alias of derived enumratedValue.

src/generate/register.rs

@@ -874,8 +874,8 @@ pub fn fields(
                 // preserve value; if read type equals write type, writer would not generate value type again
                 evs_r = Some(evs);
 
-                // generate type field_2 = field_1
-                add_variant_alias(mod_items, &evs, &base, &description);
+                // generate pub use field_1 as field_2
+                add_reexport_variant_derived_name(mod_items, &evs, &base, &description);
 
                 // generate pub use field_1 reader as field_2 reader
                 let base_field = util::replace_suffix(&base.field.name, "");
@@ -1156,7 +1156,7 @@ pub fn fields(
                 let base_field = util::replace_suffix(&base.field.name, "");
                 // generate type field_2 = field_1 if enum is different from reader enum.
                 if writer_reader_different_enum {
-                    add_variant_alias(mod_items, &evs, &base, &description);
+                    add_reexport_variant_derived_name(mod_items, &evs, &base, &description);
                 }
 
                 // generate pub use field_1 writer as field_2 writer
@@ -1426,7 +1426,7 @@ fn add_from_variants<'a>(
     }
 }
 
-fn add_variant_alias(
+fn add_reexport_variant_derived_name(
     mod_items: &mut TokenStream,
     evs: &EnumeratedValues,
     base: &EnumPath,
@@ -1453,7 +1453,7 @@ fn add_variant_alias(
         let derivedtype = Ident::new(&derived_name, span);
         mod_items.extend(quote! {
             #[doc = #desc]
-            pub type #derivedtype = #basetype;
+            pub use #basetype as #derivedtype;
         });
     }
 }