Error out when story named export has __. Reserved for internal uses. (…

…tajo#216)
abhishekbhardwaj · Aug 4, 2022 · e9c2318 · e9c2318
1 parent 46a6b97
commit e9c2318
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diff --git a/.changeset/polite-schools-sip.md b/.changeset/polite-schools-sip.md
@@ -0,0 +1,5 @@
+---
+"@ladle/react": patch
+---
+
+Error out when story named export has \_\_. We use it to encode sublevels internally and this would break the sidebar navigation.
diff --git a/packages/ladle/lib/cli/vite-plugin/parse/get-named-exports.js b/packages/ladle/lib/cli/vite-plugin/parse/get-named-exports.js
@@ -40,6 +40,12 @@ const getNamedExports = (
     );
   }
 
+  if (namedExport.includes("__")) {
+    throw new Error(
+      `Story named ${namedExport} can't contain "__". It's reserved for internal encoding. Please rename this export.`,
+    );
+  }
+
   let storyNamespace = fileId;
   if (exportDefaultProps && exportDefaultProps.title) {
     storyNamespace = titleToFileId(exportDefaultProps.title);