diff --git a/crates/backend/src/codegen/struct.rs b/crates/backend/src/codegen/struct.rs
index da23e085..72dae59a 100644
--- a/crates/backend/src/codegen/struct.rs
+++ b/crates/backend/src/codegen/struct.rs
@@ -414,9 +414,10 @@ impl NapiStruct {
           );
         }
         syn::Member::Unnamed(i) => {
-          field_destructions.push(quote! { arg #i });
+          let arg_name = format_ident!("arg{}", i);
+          field_destructions.push(quote! { #arg_name });
           field_conversions.push(
-            quote! { <#ty as napi::bindgen_prelude::ToNapiValue>::to_napi_value(env, arg #i)? },
+            quote! { <#ty as napi::bindgen_prelude::ToNapiValue>::to_napi_value(env, #arg_name)? },
           );
         }
       }
@@ -542,30 +543,31 @@ impl NapiStruct {
           }
         }
         syn::Member::Unnamed(i) => {
-          field_destructions.push(quote! { arg #i });
+          let arg_name = format_ident!("arg{}", i);
+          field_destructions.push(quote! { #arg_name });
           if is_optional_field {
             obj_field_setters.push(match self.use_nullable {
               false => quote! {
-                if arg #1.is_some() {
-                  obj.set(#field_js_name, arg #i)?;
+                if #arg_name.is_some() {
+                  obj.set(#field_js_name, #arg_name)?;
                 }
               },
               true => quote! {
-                if let Some(arg #i) = arg #i {
-                  obj.set(#field_js_name, arg #i)?;
+                if let Some(#arg_name) = #arg_name {
+                  obj.set(#field_js_name, #arg_name)?;
                 } else {
                   obj.set(#field_js_name, napi::bindgen_prelude::Null)?;
                 }
               },
             });
           } else {
-            obj_field_setters.push(quote! { obj.set(#field_js_name, arg #1)?; });
+            obj_field_setters.push(quote! { obj.set(#field_js_name, #arg_name)?; });
           }
           if is_optional_field && !self.use_nullable {
-            obj_field_getters.push(quote! { let arg #i: #ty = obj.get(#field_js_name)?; });
+            obj_field_getters.push(quote! { let #arg_name: #ty = obj.get(#field_js_name)?; });
           } else {
             obj_field_getters.push(quote! {
-              let arg #i: #ty = obj.get(#field_js_name)?.ok_or_else(|| napi::bindgen_prelude::Error::new(
+              let #arg_name: #ty = obj.get(#field_js_name)?.ok_or_else(|| napi::bindgen_prelude::Error::new(
                 napi::bindgen_prelude::Status::InvalidArg,
                 format!("Missing field `{}`", #field_js_name),
               ))?;
@@ -922,30 +924,31 @@ impl NapiStruct {
             }
           }
           syn::Member::Unnamed(i) => {
-            field_destructions.push(quote! { arg #i });
+            let arg_name = format_ident!("arg{}", i);
+            field_destructions.push(quote! { #arg_name });
             if is_optional_field {
               obj_field_setters.push(match self.use_nullable {
                 false => quote! {
-                  if arg #1.is_some() {
-                    obj.set(#field_js_name, arg #i)?;
+                  if #arg_name.is_some() {
+                    obj.set(#field_js_name, #arg_name)?;
                   }
                 },
                 true => quote! {
-                  if let Some(arg #i) = arg #i {
-                    obj.set(#field_js_name, arg #i)?;
+                  if let Some(#arg_name) = #arg_name {
+                    obj.set(#field_js_name, #arg_name)?;
                   } else {
                     obj.set(#field_js_name, napi::bindgen_prelude::Null)?;
                   }
                 },
               });
             } else {
-              obj_field_setters.push(quote! { obj.set(#field_js_name, arg #1)?; });
+              obj_field_setters.push(quote! { obj.set(#field_js_name, #arg_name)?; });
             }
             if is_optional_field && !self.use_nullable {
-              obj_field_getters.push(quote! { let arg #i: #ty = obj.get(#field_js_name)?; });
+              obj_field_getters.push(quote! { let #arg_name: #ty = obj.get(#field_js_name)?; });
             } else {
               obj_field_getters.push(quote! {
-              let arg #i: #ty = obj.get(#field_js_name)?.ok_or_else(|| napi::bindgen_prelude::Error::new(
+              let #arg_name: #ty = obj.get(#field_js_name)?.ok_or_else(|| napi::bindgen_prelude::Error::new(
                 napi::bindgen_prelude::Status::InvalidArg,
                 format!("Missing field `{}`", #field_js_name),
               ))?;
diff --git a/examples/napi/__tests__/__snapshots__/typegen.spec.ts.md b/examples/napi/__tests__/__snapshots__/typegen.spec.ts.md
index 18f2a122..b47d2487 100644
--- a/examples/napi/__tests__/__snapshots__/typegen.spec.ts.md
+++ b/examples/napi/__tests__/__snapshots__/typegen.spec.ts.md
@@ -704,6 +704,7 @@ Generated by [AVA](https://avajs.dev).
       | { type2: 'Hello' }␊
       | { type2: 'Greeting', name: string }␊
       | { type2: 'Birthday', name: string, age: number }␊
+      | { type2: 'Tuple', field0: number, field1: number }␊
     ␊
     export declare function sumBtreeMapping(nums: Record<string, number>): number␊
     ␊
@@ -754,6 +755,11 @@ Generated by [AVA](https://avajs.dev).
       typeOverrideOptional?: object␊
     }␊
     ␊
+    export interface TupleObject {␊
+      field0: number␊
+      field1: number␊
+    }␊
+    ␊
     export declare function u16ArrayToArray(input: Uint16Array): Array<number>␊
     ␊
     export declare function u32ArrayToArray(input: Uint32Array): Array<number>␊
diff --git a/examples/napi/__tests__/__snapshots__/typegen.spec.ts.snap b/examples/napi/__tests__/__snapshots__/typegen.spec.ts.snap
index 1681d6ab..20c491c4 100644
Binary files a/examples/napi/__tests__/__snapshots__/typegen.spec.ts.snap and b/examples/napi/__tests__/__snapshots__/typegen.spec.ts.snap differ
diff --git a/examples/napi/__tests__/values.spec.ts b/examples/napi/__tests__/values.spec.ts
index 4d6c9239..0fa15180 100644
--- a/examples/napi/__tests__/values.spec.ts
+++ b/examples/napi/__tests__/values.spec.ts
@@ -265,9 +265,15 @@ test('structured enum', (t) => {
     name: 'Napi-rs',
     age: 10,
   }
+  const tuple: StructuredKind = {
+    type2: 'Tuple',
+    field0: 1,
+    field1: 2,
+  }
   t.deepEqual(hello, validateStructuredEnum(hello))
   t.deepEqual(greeting, validateStructuredEnum(greeting))
   t.deepEqual(birthday, validateStructuredEnum(birthday))
+  t.deepEqual(tuple, validateStructuredEnum(tuple))
   t.throws(() => validateStructuredEnum({ type2: 'unknown' } as any))
   t.throws(() => validateStructuredEnum({ type2: 'Greeting' } as any))
 })
diff --git a/examples/napi/example.wasi-browser.js b/examples/napi/example.wasi-browser.js
index 7248595f..a3cada74 100644
--- a/examples/napi/example.wasi-browser.js
+++ b/examples/napi/example.wasi-browser.js
@@ -282,88 +282,89 @@ function __napi_rs_initialize_modules(__napiInstance) {
   __napiInstance.exports['__napi_register__object_get_named_property_should_perform_typecheck_273']?.()
   __napiInstance.exports['__napi_register__ObjectOnlyToJs_struct_274']?.()
   __napiInstance.exports['__napi_register__return_object_only_to_js_275']?.()
-  __napiInstance.exports['__napi_register__async_plus_100_276']?.()
-  __napiInstance.exports['__napi_register__call_then_on_promise_277']?.()
-  __napiInstance.exports['__napi_register__call_catch_on_promise_278']?.()
-  __napiInstance.exports['__napi_register__call_finally_on_promise_279']?.()
-  __napiInstance.exports['__napi_register__JsRepo_struct_280']?.()
-  __napiInstance.exports['__napi_register__JsRepo_impl_283']?.()
-  __napiInstance.exports['__napi_register__JsRemote_struct_284']?.()
-  __napiInstance.exports['__napi_register__JsRemote_impl_287']?.()
-  __napiInstance.exports['__napi_register__CSSRuleList_struct_288']?.()
-  __napiInstance.exports['__napi_register__CSSRuleList_impl_292']?.()
-  __napiInstance.exports['__napi_register__CSSStyleSheet_struct_293']?.()
-  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_struct_294']?.()
-  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_impl_296']?.()
-  __napiInstance.exports['__napi_register__CSSStyleSheet_impl_300']?.()
-  __napiInstance.exports['__napi_register__PackageJson_struct_301']?.()
-  __napiInstance.exports['__napi_register__read_package_json_302']?.()
-  __napiInstance.exports['__napi_register__get_package_json_name_303']?.()
-  __napiInstance.exports['__napi_register__test_serde_roundtrip_304']?.()
-  __napiInstance.exports['__napi_register__test_serde_big_number_precision_305']?.()
-  __napiInstance.exports['__napi_register__test_serde_buffer_bytes_306']?.()
-  __napiInstance.exports['__napi_register__return_from_shared_crate_307']?.()
-  __napiInstance.exports['__napi_register__contains_308']?.()
-  __napiInstance.exports['__napi_register__concat_str_309']?.()
-  __napiInstance.exports['__napi_register__concat_utf16_310']?.()
-  __napiInstance.exports['__napi_register__concat_latin1_311']?.()
-  __napiInstance.exports['__napi_register__roundtrip_str_312']?.()
-  __napiInstance.exports['__napi_register__set_symbol_in_obj_313']?.()
-  __napiInstance.exports['__napi_register__create_symbol_314']?.()
-  __napiInstance.exports['__napi_register__create_symbol_for_315']?.()
-  __napiInstance.exports['__napi_register__DelaySum_impl_316']?.()
-  __napiInstance.exports['__napi_register__without_abort_controller_317']?.()
-  __napiInstance.exports['__napi_register__with_abort_controller_318']?.()
-  __napiInstance.exports['__napi_register__AsyncTaskVoidReturn_impl_319']?.()
-  __napiInstance.exports['__napi_register__async_task_void_return_320']?.()
-  __napiInstance.exports['__napi_register__AsyncTaskOptionalReturn_impl_321']?.()
-  __napiInstance.exports['__napi_register__async_task_optional_return_322']?.()
-  __napiInstance.exports['__napi_register__AsyncTaskReadFile_impl_323']?.()
-  __napiInstance.exports['__napi_register__async_task_read_file_324']?.()
-  __napiInstance.exports['__napi_register__call_threadsafe_function_325']?.()
-  __napiInstance.exports['__napi_register__call_long_threadsafe_function_326']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_throw_error_327']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_328']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_error_329']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_closure_capture_330']?.()
-  __napiInstance.exports['__napi_register__tsfn_call_with_callback_331']?.()
-  __napiInstance.exports['__napi_register__tsfn_async_call_332']?.()
-  __napiInstance.exports['__napi_register__accept_threadsafe_function_333']?.()
-  __napiInstance.exports['__napi_register__accept_threadsafe_function_fatal_334']?.()
-  __napiInstance.exports['__napi_register__accept_threadsafe_function_tuple_args_335']?.()
-  __napiInstance.exports['__napi_register__tsfn_return_promise_336']?.()
-  __napiInstance.exports['__napi_register__tsfn_return_promise_timeout_337']?.()
-  __napiInstance.exports['__napi_register__tsfn_throw_from_js_338']?.()
-  __napiInstance.exports['__napi_register__spawn_thread_in_thread_339']?.()
-  __napiInstance.exports['__napi_register__Pet_struct_340']?.()
-  __napiInstance.exports['__napi_register__tsfn_in_either_341']?.()
-  __napiInstance.exports['__napi_register__get_buffer_342']?.()
-  __napiInstance.exports['__napi_register__append_buffer_343']?.()
-  __napiInstance.exports['__napi_register__get_empty_buffer_344']?.()
-  __napiInstance.exports['__napi_register__convert_u32_array_345']?.()
-  __napiInstance.exports['__napi_register__create_external_typed_array_346']?.()
-  __napiInstance.exports['__napi_register__mutate_typed_array_347']?.()
-  __napiInstance.exports['__napi_register__deref_uint8_array_348']?.()
-  __napiInstance.exports['__napi_register__buffer_pass_through_349']?.()
-  __napiInstance.exports['__napi_register__array_buffer_pass_through_350']?.()
-  __napiInstance.exports['__napi_register__accept_slice_351']?.()
-  __napiInstance.exports['__napi_register__accept_arraybuffer_352']?.()
-  __napiInstance.exports['__napi_register__u8_array_to_array_353']?.()
-  __napiInstance.exports['__napi_register__i8_array_to_array_354']?.()
-  __napiInstance.exports['__napi_register__u16_array_to_array_355']?.()
-  __napiInstance.exports['__napi_register__i16_array_to_array_356']?.()
-  __napiInstance.exports['__napi_register__u32_array_to_array_357']?.()
-  __napiInstance.exports['__napi_register__i32_array_to_array_358']?.()
-  __napiInstance.exports['__napi_register__f32_array_to_array_359']?.()
-  __napiInstance.exports['__napi_register__f64_array_to_array_360']?.()
-  __napiInstance.exports['__napi_register__u64_array_to_array_361']?.()
-  __napiInstance.exports['__napi_register__i64_array_to_array_362']?.()
-  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_363']?.()
-  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_and_buffer_slice_364']?.()
-  __napiInstance.exports['__napi_register__AsyncBuffer_impl_365']?.()
-  __napiInstance.exports['__napi_register__async_reduce_buffer_366']?.()
-  __napiInstance.exports['__napi_register__async_buffer_to_array_367']?.()
-  __napiInstance.exports['__napi_register__u_init8_array_from_string_368']?.()
+  __napiInstance.exports['__napi_register__TupleObject_struct_276']?.()
+  __napiInstance.exports['__napi_register__async_plus_100_277']?.()
+  __napiInstance.exports['__napi_register__call_then_on_promise_278']?.()
+  __napiInstance.exports['__napi_register__call_catch_on_promise_279']?.()
+  __napiInstance.exports['__napi_register__call_finally_on_promise_280']?.()
+  __napiInstance.exports['__napi_register__JsRepo_struct_281']?.()
+  __napiInstance.exports['__napi_register__JsRepo_impl_284']?.()
+  __napiInstance.exports['__napi_register__JsRemote_struct_285']?.()
+  __napiInstance.exports['__napi_register__JsRemote_impl_288']?.()
+  __napiInstance.exports['__napi_register__CSSRuleList_struct_289']?.()
+  __napiInstance.exports['__napi_register__CSSRuleList_impl_293']?.()
+  __napiInstance.exports['__napi_register__CSSStyleSheet_struct_294']?.()
+  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_struct_295']?.()
+  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_impl_297']?.()
+  __napiInstance.exports['__napi_register__CSSStyleSheet_impl_301']?.()
+  __napiInstance.exports['__napi_register__PackageJson_struct_302']?.()
+  __napiInstance.exports['__napi_register__read_package_json_303']?.()
+  __napiInstance.exports['__napi_register__get_package_json_name_304']?.()
+  __napiInstance.exports['__napi_register__test_serde_roundtrip_305']?.()
+  __napiInstance.exports['__napi_register__test_serde_big_number_precision_306']?.()
+  __napiInstance.exports['__napi_register__test_serde_buffer_bytes_307']?.()
+  __napiInstance.exports['__napi_register__return_from_shared_crate_308']?.()
+  __napiInstance.exports['__napi_register__contains_309']?.()
+  __napiInstance.exports['__napi_register__concat_str_310']?.()
+  __napiInstance.exports['__napi_register__concat_utf16_311']?.()
+  __napiInstance.exports['__napi_register__concat_latin1_312']?.()
+  __napiInstance.exports['__napi_register__roundtrip_str_313']?.()
+  __napiInstance.exports['__napi_register__set_symbol_in_obj_314']?.()
+  __napiInstance.exports['__napi_register__create_symbol_315']?.()
+  __napiInstance.exports['__napi_register__create_symbol_for_316']?.()
+  __napiInstance.exports['__napi_register__DelaySum_impl_317']?.()
+  __napiInstance.exports['__napi_register__without_abort_controller_318']?.()
+  __napiInstance.exports['__napi_register__with_abort_controller_319']?.()
+  __napiInstance.exports['__napi_register__AsyncTaskVoidReturn_impl_320']?.()
+  __napiInstance.exports['__napi_register__async_task_void_return_321']?.()
+  __napiInstance.exports['__napi_register__AsyncTaskOptionalReturn_impl_322']?.()
+  __napiInstance.exports['__napi_register__async_task_optional_return_323']?.()
+  __napiInstance.exports['__napi_register__AsyncTaskReadFile_impl_324']?.()
+  __napiInstance.exports['__napi_register__async_task_read_file_325']?.()
+  __napiInstance.exports['__napi_register__call_threadsafe_function_326']?.()
+  __napiInstance.exports['__napi_register__call_long_threadsafe_function_327']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_throw_error_328']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_329']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_error_330']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_closure_capture_331']?.()
+  __napiInstance.exports['__napi_register__tsfn_call_with_callback_332']?.()
+  __napiInstance.exports['__napi_register__tsfn_async_call_333']?.()
+  __napiInstance.exports['__napi_register__accept_threadsafe_function_334']?.()
+  __napiInstance.exports['__napi_register__accept_threadsafe_function_fatal_335']?.()
+  __napiInstance.exports['__napi_register__accept_threadsafe_function_tuple_args_336']?.()
+  __napiInstance.exports['__napi_register__tsfn_return_promise_337']?.()
+  __napiInstance.exports['__napi_register__tsfn_return_promise_timeout_338']?.()
+  __napiInstance.exports['__napi_register__tsfn_throw_from_js_339']?.()
+  __napiInstance.exports['__napi_register__spawn_thread_in_thread_340']?.()
+  __napiInstance.exports['__napi_register__Pet_struct_341']?.()
+  __napiInstance.exports['__napi_register__tsfn_in_either_342']?.()
+  __napiInstance.exports['__napi_register__get_buffer_343']?.()
+  __napiInstance.exports['__napi_register__append_buffer_344']?.()
+  __napiInstance.exports['__napi_register__get_empty_buffer_345']?.()
+  __napiInstance.exports['__napi_register__convert_u32_array_346']?.()
+  __napiInstance.exports['__napi_register__create_external_typed_array_347']?.()
+  __napiInstance.exports['__napi_register__mutate_typed_array_348']?.()
+  __napiInstance.exports['__napi_register__deref_uint8_array_349']?.()
+  __napiInstance.exports['__napi_register__buffer_pass_through_350']?.()
+  __napiInstance.exports['__napi_register__array_buffer_pass_through_351']?.()
+  __napiInstance.exports['__napi_register__accept_slice_352']?.()
+  __napiInstance.exports['__napi_register__accept_arraybuffer_353']?.()
+  __napiInstance.exports['__napi_register__u8_array_to_array_354']?.()
+  __napiInstance.exports['__napi_register__i8_array_to_array_355']?.()
+  __napiInstance.exports['__napi_register__u16_array_to_array_356']?.()
+  __napiInstance.exports['__napi_register__i16_array_to_array_357']?.()
+  __napiInstance.exports['__napi_register__u32_array_to_array_358']?.()
+  __napiInstance.exports['__napi_register__i32_array_to_array_359']?.()
+  __napiInstance.exports['__napi_register__f32_array_to_array_360']?.()
+  __napiInstance.exports['__napi_register__f64_array_to_array_361']?.()
+  __napiInstance.exports['__napi_register__u64_array_to_array_362']?.()
+  __napiInstance.exports['__napi_register__i64_array_to_array_363']?.()
+  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_364']?.()
+  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_and_buffer_slice_365']?.()
+  __napiInstance.exports['__napi_register__AsyncBuffer_impl_366']?.()
+  __napiInstance.exports['__napi_register__async_reduce_buffer_367']?.()
+  __napiInstance.exports['__napi_register__async_buffer_to_array_368']?.()
+  __napiInstance.exports['__napi_register__u_init8_array_from_string_369']?.()
 }
 export const Animal = __napiModule.exports.Animal
 export const AnimalWithDefaultConstructor = __napiModule.exports.AnimalWithDefaultConstructor
diff --git a/examples/napi/example.wasi.cjs b/examples/napi/example.wasi.cjs
index cd12d402..95c78862 100644
--- a/examples/napi/example.wasi.cjs
+++ b/examples/napi/example.wasi.cjs
@@ -306,88 +306,89 @@ function __napi_rs_initialize_modules(__napiInstance) {
   __napiInstance.exports['__napi_register__object_get_named_property_should_perform_typecheck_273']?.()
   __napiInstance.exports['__napi_register__ObjectOnlyToJs_struct_274']?.()
   __napiInstance.exports['__napi_register__return_object_only_to_js_275']?.()
-  __napiInstance.exports['__napi_register__async_plus_100_276']?.()
-  __napiInstance.exports['__napi_register__call_then_on_promise_277']?.()
-  __napiInstance.exports['__napi_register__call_catch_on_promise_278']?.()
-  __napiInstance.exports['__napi_register__call_finally_on_promise_279']?.()
-  __napiInstance.exports['__napi_register__JsRepo_struct_280']?.()
-  __napiInstance.exports['__napi_register__JsRepo_impl_283']?.()
-  __napiInstance.exports['__napi_register__JsRemote_struct_284']?.()
-  __napiInstance.exports['__napi_register__JsRemote_impl_287']?.()
-  __napiInstance.exports['__napi_register__CSSRuleList_struct_288']?.()
-  __napiInstance.exports['__napi_register__CSSRuleList_impl_292']?.()
-  __napiInstance.exports['__napi_register__CSSStyleSheet_struct_293']?.()
-  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_struct_294']?.()
-  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_impl_296']?.()
-  __napiInstance.exports['__napi_register__CSSStyleSheet_impl_300']?.()
-  __napiInstance.exports['__napi_register__PackageJson_struct_301']?.()
-  __napiInstance.exports['__napi_register__read_package_json_302']?.()
-  __napiInstance.exports['__napi_register__get_package_json_name_303']?.()
-  __napiInstance.exports['__napi_register__test_serde_roundtrip_304']?.()
-  __napiInstance.exports['__napi_register__test_serde_big_number_precision_305']?.()
-  __napiInstance.exports['__napi_register__test_serde_buffer_bytes_306']?.()
-  __napiInstance.exports['__napi_register__return_from_shared_crate_307']?.()
-  __napiInstance.exports['__napi_register__contains_308']?.()
-  __napiInstance.exports['__napi_register__concat_str_309']?.()
-  __napiInstance.exports['__napi_register__concat_utf16_310']?.()
-  __napiInstance.exports['__napi_register__concat_latin1_311']?.()
-  __napiInstance.exports['__napi_register__roundtrip_str_312']?.()
-  __napiInstance.exports['__napi_register__set_symbol_in_obj_313']?.()
-  __napiInstance.exports['__napi_register__create_symbol_314']?.()
-  __napiInstance.exports['__napi_register__create_symbol_for_315']?.()
-  __napiInstance.exports['__napi_register__DelaySum_impl_316']?.()
-  __napiInstance.exports['__napi_register__without_abort_controller_317']?.()
-  __napiInstance.exports['__napi_register__with_abort_controller_318']?.()
-  __napiInstance.exports['__napi_register__AsyncTaskVoidReturn_impl_319']?.()
-  __napiInstance.exports['__napi_register__async_task_void_return_320']?.()
-  __napiInstance.exports['__napi_register__AsyncTaskOptionalReturn_impl_321']?.()
-  __napiInstance.exports['__napi_register__async_task_optional_return_322']?.()
-  __napiInstance.exports['__napi_register__AsyncTaskReadFile_impl_323']?.()
-  __napiInstance.exports['__napi_register__async_task_read_file_324']?.()
-  __napiInstance.exports['__napi_register__call_threadsafe_function_325']?.()
-  __napiInstance.exports['__napi_register__call_long_threadsafe_function_326']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_throw_error_327']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_328']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_error_329']?.()
-  __napiInstance.exports['__napi_register__threadsafe_function_closure_capture_330']?.()
-  __napiInstance.exports['__napi_register__tsfn_call_with_callback_331']?.()
-  __napiInstance.exports['__napi_register__tsfn_async_call_332']?.()
-  __napiInstance.exports['__napi_register__accept_threadsafe_function_333']?.()
-  __napiInstance.exports['__napi_register__accept_threadsafe_function_fatal_334']?.()
-  __napiInstance.exports['__napi_register__accept_threadsafe_function_tuple_args_335']?.()
-  __napiInstance.exports['__napi_register__tsfn_return_promise_336']?.()
-  __napiInstance.exports['__napi_register__tsfn_return_promise_timeout_337']?.()
-  __napiInstance.exports['__napi_register__tsfn_throw_from_js_338']?.()
-  __napiInstance.exports['__napi_register__spawn_thread_in_thread_339']?.()
-  __napiInstance.exports['__napi_register__Pet_struct_340']?.()
-  __napiInstance.exports['__napi_register__tsfn_in_either_341']?.()
-  __napiInstance.exports['__napi_register__get_buffer_342']?.()
-  __napiInstance.exports['__napi_register__append_buffer_343']?.()
-  __napiInstance.exports['__napi_register__get_empty_buffer_344']?.()
-  __napiInstance.exports['__napi_register__convert_u32_array_345']?.()
-  __napiInstance.exports['__napi_register__create_external_typed_array_346']?.()
-  __napiInstance.exports['__napi_register__mutate_typed_array_347']?.()
-  __napiInstance.exports['__napi_register__deref_uint8_array_348']?.()
-  __napiInstance.exports['__napi_register__buffer_pass_through_349']?.()
-  __napiInstance.exports['__napi_register__array_buffer_pass_through_350']?.()
-  __napiInstance.exports['__napi_register__accept_slice_351']?.()
-  __napiInstance.exports['__napi_register__accept_arraybuffer_352']?.()
-  __napiInstance.exports['__napi_register__u8_array_to_array_353']?.()
-  __napiInstance.exports['__napi_register__i8_array_to_array_354']?.()
-  __napiInstance.exports['__napi_register__u16_array_to_array_355']?.()
-  __napiInstance.exports['__napi_register__i16_array_to_array_356']?.()
-  __napiInstance.exports['__napi_register__u32_array_to_array_357']?.()
-  __napiInstance.exports['__napi_register__i32_array_to_array_358']?.()
-  __napiInstance.exports['__napi_register__f32_array_to_array_359']?.()
-  __napiInstance.exports['__napi_register__f64_array_to_array_360']?.()
-  __napiInstance.exports['__napi_register__u64_array_to_array_361']?.()
-  __napiInstance.exports['__napi_register__i64_array_to_array_362']?.()
-  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_363']?.()
-  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_and_buffer_slice_364']?.()
-  __napiInstance.exports['__napi_register__AsyncBuffer_impl_365']?.()
-  __napiInstance.exports['__napi_register__async_reduce_buffer_366']?.()
-  __napiInstance.exports['__napi_register__async_buffer_to_array_367']?.()
-  __napiInstance.exports['__napi_register__u_init8_array_from_string_368']?.()
+  __napiInstance.exports['__napi_register__TupleObject_struct_276']?.()
+  __napiInstance.exports['__napi_register__async_plus_100_277']?.()
+  __napiInstance.exports['__napi_register__call_then_on_promise_278']?.()
+  __napiInstance.exports['__napi_register__call_catch_on_promise_279']?.()
+  __napiInstance.exports['__napi_register__call_finally_on_promise_280']?.()
+  __napiInstance.exports['__napi_register__JsRepo_struct_281']?.()
+  __napiInstance.exports['__napi_register__JsRepo_impl_284']?.()
+  __napiInstance.exports['__napi_register__JsRemote_struct_285']?.()
+  __napiInstance.exports['__napi_register__JsRemote_impl_288']?.()
+  __napiInstance.exports['__napi_register__CSSRuleList_struct_289']?.()
+  __napiInstance.exports['__napi_register__CSSRuleList_impl_293']?.()
+  __napiInstance.exports['__napi_register__CSSStyleSheet_struct_294']?.()
+  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_struct_295']?.()
+  __napiInstance.exports['__napi_register__AnotherCSSStyleSheet_impl_297']?.()
+  __napiInstance.exports['__napi_register__CSSStyleSheet_impl_301']?.()
+  __napiInstance.exports['__napi_register__PackageJson_struct_302']?.()
+  __napiInstance.exports['__napi_register__read_package_json_303']?.()
+  __napiInstance.exports['__napi_register__get_package_json_name_304']?.()
+  __napiInstance.exports['__napi_register__test_serde_roundtrip_305']?.()
+  __napiInstance.exports['__napi_register__test_serde_big_number_precision_306']?.()
+  __napiInstance.exports['__napi_register__test_serde_buffer_bytes_307']?.()
+  __napiInstance.exports['__napi_register__return_from_shared_crate_308']?.()
+  __napiInstance.exports['__napi_register__contains_309']?.()
+  __napiInstance.exports['__napi_register__concat_str_310']?.()
+  __napiInstance.exports['__napi_register__concat_utf16_311']?.()
+  __napiInstance.exports['__napi_register__concat_latin1_312']?.()
+  __napiInstance.exports['__napi_register__roundtrip_str_313']?.()
+  __napiInstance.exports['__napi_register__set_symbol_in_obj_314']?.()
+  __napiInstance.exports['__napi_register__create_symbol_315']?.()
+  __napiInstance.exports['__napi_register__create_symbol_for_316']?.()
+  __napiInstance.exports['__napi_register__DelaySum_impl_317']?.()
+  __napiInstance.exports['__napi_register__without_abort_controller_318']?.()
+  __napiInstance.exports['__napi_register__with_abort_controller_319']?.()
+  __napiInstance.exports['__napi_register__AsyncTaskVoidReturn_impl_320']?.()
+  __napiInstance.exports['__napi_register__async_task_void_return_321']?.()
+  __napiInstance.exports['__napi_register__AsyncTaskOptionalReturn_impl_322']?.()
+  __napiInstance.exports['__napi_register__async_task_optional_return_323']?.()
+  __napiInstance.exports['__napi_register__AsyncTaskReadFile_impl_324']?.()
+  __napiInstance.exports['__napi_register__async_task_read_file_325']?.()
+  __napiInstance.exports['__napi_register__call_threadsafe_function_326']?.()
+  __napiInstance.exports['__napi_register__call_long_threadsafe_function_327']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_throw_error_328']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_329']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_fatal_mode_error_330']?.()
+  __napiInstance.exports['__napi_register__threadsafe_function_closure_capture_331']?.()
+  __napiInstance.exports['__napi_register__tsfn_call_with_callback_332']?.()
+  __napiInstance.exports['__napi_register__tsfn_async_call_333']?.()
+  __napiInstance.exports['__napi_register__accept_threadsafe_function_334']?.()
+  __napiInstance.exports['__napi_register__accept_threadsafe_function_fatal_335']?.()
+  __napiInstance.exports['__napi_register__accept_threadsafe_function_tuple_args_336']?.()
+  __napiInstance.exports['__napi_register__tsfn_return_promise_337']?.()
+  __napiInstance.exports['__napi_register__tsfn_return_promise_timeout_338']?.()
+  __napiInstance.exports['__napi_register__tsfn_throw_from_js_339']?.()
+  __napiInstance.exports['__napi_register__spawn_thread_in_thread_340']?.()
+  __napiInstance.exports['__napi_register__Pet_struct_341']?.()
+  __napiInstance.exports['__napi_register__tsfn_in_either_342']?.()
+  __napiInstance.exports['__napi_register__get_buffer_343']?.()
+  __napiInstance.exports['__napi_register__append_buffer_344']?.()
+  __napiInstance.exports['__napi_register__get_empty_buffer_345']?.()
+  __napiInstance.exports['__napi_register__convert_u32_array_346']?.()
+  __napiInstance.exports['__napi_register__create_external_typed_array_347']?.()
+  __napiInstance.exports['__napi_register__mutate_typed_array_348']?.()
+  __napiInstance.exports['__napi_register__deref_uint8_array_349']?.()
+  __napiInstance.exports['__napi_register__buffer_pass_through_350']?.()
+  __napiInstance.exports['__napi_register__array_buffer_pass_through_351']?.()
+  __napiInstance.exports['__napi_register__accept_slice_352']?.()
+  __napiInstance.exports['__napi_register__accept_arraybuffer_353']?.()
+  __napiInstance.exports['__napi_register__u8_array_to_array_354']?.()
+  __napiInstance.exports['__napi_register__i8_array_to_array_355']?.()
+  __napiInstance.exports['__napi_register__u16_array_to_array_356']?.()
+  __napiInstance.exports['__napi_register__i16_array_to_array_357']?.()
+  __napiInstance.exports['__napi_register__u32_array_to_array_358']?.()
+  __napiInstance.exports['__napi_register__i32_array_to_array_359']?.()
+  __napiInstance.exports['__napi_register__f32_array_to_array_360']?.()
+  __napiInstance.exports['__napi_register__f64_array_to_array_361']?.()
+  __napiInstance.exports['__napi_register__u64_array_to_array_362']?.()
+  __napiInstance.exports['__napi_register__i64_array_to_array_363']?.()
+  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_364']?.()
+  __napiInstance.exports['__napi_register__accept_uint8_clamped_slice_and_buffer_slice_365']?.()
+  __napiInstance.exports['__napi_register__AsyncBuffer_impl_366']?.()
+  __napiInstance.exports['__napi_register__async_reduce_buffer_367']?.()
+  __napiInstance.exports['__napi_register__async_buffer_to_array_368']?.()
+  __napiInstance.exports['__napi_register__u_init8_array_from_string_369']?.()
 }
 module.exports.Animal = __napiModule.exports.Animal
 module.exports.AnimalWithDefaultConstructor = __napiModule.exports.AnimalWithDefaultConstructor
diff --git a/examples/napi/index.d.cts b/examples/napi/index.d.cts
index 1012b1a6..0d3a4c26 100644
--- a/examples/napi/index.d.cts
+++ b/examples/napi/index.d.cts
@@ -694,6 +694,7 @@ export type StructuredKind =
   | { type2: 'Hello' }
   | { type2: 'Greeting', name: string }
   | { type2: 'Birthday', name: string, age: number }
+  | { type2: 'Tuple', field0: number, field1: number }
 
 export declare function sumBtreeMapping(nums: Record<string, number>): number
 
@@ -744,6 +745,11 @@ export interface TsTypeChanged {
   typeOverrideOptional?: object
 }
 
+export interface TupleObject {
+  field0: number
+  field1: number
+}
+
 export declare function u16ArrayToArray(input: Uint16Array): Array<number>
 
 export declare function u32ArrayToArray(input: Uint32Array): Array<number>
diff --git a/examples/napi/src/enum.rs b/examples/napi/src/enum.rs
index cb5a2dab..cb85d315 100644
--- a/examples/napi/src/enum.rs
+++ b/examples/napi/src/enum.rs
@@ -66,6 +66,7 @@ pub enum StructuredKind {
   Hello,
   Greeting { name: String },
   Birthday { name: String, age: u8 },
+  Tuple(u32, u32),
 }
 
 #[napi]
diff --git a/examples/napi/src/object.rs b/examples/napi/src/object.rs
index 5363065d..94ec91cd 100644
--- a/examples/napi/src/object.rs
+++ b/examples/napi/src/object.rs
@@ -145,3 +145,6 @@ fn return_object_only_to_js() -> ObjectOnlyToJs {
     dependencies: serde_json::json!({ "@napi-rs/cli": "^3.0.0", "rollup": "^4.0.0" }),
   }
 }
+
+#[napi(object)]
+pub struct TupleObject(pub u32, pub u32);