diff --git a/crates/backend/src/codegen/enum.rs b/crates/backend/src/codegen/enum.rs
index 14ed2a4e..6ba794e1 100644
--- a/crates/backend/src/codegen/enum.rs
+++ b/crates/backend/src/codegen/enum.rs
@@ -39,6 +39,81 @@ impl NapiEnum {
       quote! { napi::bindgen_prelude::ValueType::Number }
     };
 
+    let from_napi_value = if self.variants.is_empty() {
+      quote! {
+        impl napi::bindgen_prelude::FromNapiValue for #name {
+          unsafe fn from_napi_value(
+            env: napi::bindgen_prelude::sys::napi_env,
+            napi_val: napi::bindgen_prelude::sys::napi_value
+          ) -> napi::bindgen_prelude::Result<Self> {
+            Err(napi::bindgen_prelude::error!(
+              napi::bindgen_prelude::Status::InvalidArg,
+              "enum `{}` has no variants",
+              #name_str
+            ))
+          }
+        }
+      }
+    } else {
+      quote! {
+        impl napi::bindgen_prelude::FromNapiValue for #name {
+          unsafe fn from_napi_value(
+            env: napi::bindgen_prelude::sys::napi_env,
+            napi_val: napi::bindgen_prelude::sys::napi_value
+          ) -> napi::bindgen_prelude::Result<Self> {
+            let val = napi::bindgen_prelude::FromNapiValue::from_napi_value(env, napi_val).map_err(|e| {
+              napi::bindgen_prelude::error!(
+                e.status,
+                "Failed to convert napi value into enum `{}`. {}",
+                #name_str,
+                e,
+              )
+            })?;
+
+            match val {
+              #(#from_napi_branches,)*
+              _ => {
+                Err(napi::bindgen_prelude::error!(
+                  napi::bindgen_prelude::Status::InvalidArg,
+                  "value `{:?}` does not match any variant of enum `{}`",
+                  val,
+                  #name_str
+                ))
+              }
+            }
+          }
+        }
+      }
+    };
+
+    let to_napi_value = if self.variants.is_empty() {
+      quote! {
+        impl napi::bindgen_prelude::ToNapiValue for #name {
+          unsafe fn to_napi_value(
+            env: napi::bindgen_prelude::sys::napi_env,
+            val: Self
+          ) -> napi::bindgen_prelude::Result<napi::bindgen_prelude::sys::napi_value> {
+            napi::bindgen_prelude::ToNapiValue::to_napi_value(env, ())
+          }
+        }
+      }
+    } else {
+      quote! {
+        impl napi::bindgen_prelude::ToNapiValue for #name {
+          unsafe fn to_napi_value(
+            env: napi::bindgen_prelude::sys::napi_env,
+            val: Self
+          ) -> napi::bindgen_prelude::Result<napi::bindgen_prelude::sys::napi_value> {
+            let val = match val {
+              #(#to_napi_branches,)*
+            };
+
+            napi::bindgen_prelude::ToNapiValue::to_napi_value(env, val)
+          }
+        }
+      }
+    };
+
     quote! {
       impl napi::bindgen_prelude::TypeName for #name {
         fn type_name() -> &'static str {
@@ -60,46 +135,9 @@ impl NapiEnum {
         }
       }
 
-      impl napi::bindgen_prelude::FromNapiValue for #name {
-        unsafe fn from_napi_value(
-          env: napi::bindgen_prelude::sys::napi_env,
-          napi_val: napi::bindgen_prelude::sys::napi_value
-        ) -> napi::bindgen_prelude::Result<Self> {
-          let val = napi::bindgen_prelude::FromNapiValue::from_napi_value(env, napi_val).map_err(|e| {
-            napi::bindgen_prelude::error!(
-              e.status,
-              "Failed to convert napi value into enum `{}`. {}",
-              #name_str,
-              e,
-            )
-          })?;
+      #from_napi_value
 
-          match val {
-            #(#from_napi_branches,)*
-            _ => {
-              Err(napi::bindgen_prelude::error!(
-                napi::bindgen_prelude::Status::InvalidArg,
-                "value `{:?}` does not match any variant of enum `{}`",
-                val,
-                #name_str
-              ))
-            }
-          }
-        }
-      }
-
-      impl napi::bindgen_prelude::ToNapiValue for #name {
-        unsafe fn to_napi_value(
-          env: napi::bindgen_prelude::sys::napi_env,
-          val: Self
-        ) -> napi::bindgen_prelude::Result<napi::bindgen_prelude::sys::napi_value> {
-          let val = match val {
-            #(#to_napi_branches,)*
-          };
-
-          napi::bindgen_prelude::ToNapiValue::to_napi_value(env, val)
-        }
-      }
+      #to_napi_value
     }
   }
 
diff --git a/crates/macro/src/lib.rs b/crates/macro/src/lib.rs
index 30612ffd..ee127617 100644
--- a/crates/macro/src/lib.rs
+++ b/crates/macro/src/lib.rs
@@ -18,7 +18,7 @@ use syn::{fold::Fold, parse_macro_input, ItemFn};
 
 /// ```ignore
 /// #[napi]
-/// fn test(ctx: CallContext, name: String) {
+/// fn test(name: String) {
 ///   "hello" + name
 /// }
 /// ```