fixes

crates/next-core/src/next_config.rs

@@ -315,12 +315,9 @@ pub struct ExperimentalConfig {
     pub server_components_external_packages: Option<Vec<String>>,
     pub app_dir: Option<bool>,
 
-    // we only have swc?
+    // we only have swc
     force_swc_transforms: Option<bool>,
 
-    // supported?
-    transpile_packages: Option<Vec<String>>,
-
     #[serde(flatten)]
     unsupported: UnsupportedExperimentalConfig,
 }
@@ -381,6 +378,7 @@ struct UnsupportedExperimentalConfig {
     swc_minify_debug_options: Option<serde_json::Value>,
     swc_plugins: Option<serde_json::Value>,
     swc_trace_profiling: Option<bool>,
+    transpile_packages: Option<Vec<String>>,
     turbotrace: Option<serde_json::Value>,
     url_imports: Option<serde_json::Value>,
     web_vitals_attribution: Option<serde_json::Value>,
@@ -443,6 +441,7 @@ impl Default for UnsupportedExperimentalConfig {
             swc_plugins: None,
             swc_trace_profiling: Some(false),
             turbotrace: None,
+            transpile_packages: None,
             url_imports: None,
             web_vitals_attribution: None,
             worker_threads: Some(false),
@@ -654,7 +653,7 @@ const SUPPORTED_OPTIONS: &[&'static str] = &[
     "experimental.serverComponentsExternalPackages",
 ];
 
-pub async fn validate_next_config(
+async fn validate_next_config(
     project_path: FileSystemPathVc,
     next_config: NextConfigVc,
 ) -> Result<()> {