From caf2b6bb8c0c16c6c56c39848a663404d13e08d9 Mon Sep 17 00:00:00 2001
From: Michael Shilman <michael@lab80.co>
Date: Thu, 24 Sep 2020 17:42:19 +0800
Subject: [PATCH] Addon-docs: Fix story description to only show when expanded

---
 addons/docs/src/blocks/DocsStory.tsx | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/addons/docs/src/blocks/DocsStory.tsx b/addons/docs/src/blocks/DocsStory.tsx
index 4eab78e0d890..68b3cd6a770f 100644
--- a/addons/docs/src/blocks/DocsStory.tsx
+++ b/addons/docs/src/blocks/DocsStory.tsx
@@ -22,13 +22,18 @@ export const DocsStory: FunctionComponent<DocsStoryProps> = ({
   name,
   expanded = true,
   withToolbar = false,
-  parameters,
+  parameters = {},
 }) => {
-  let description = expanded && parameters?.docs?.description?.story;
-  if (!description) {
-    description = parameters?.docs?.storyDescription;
-    if (description) warnStoryDescription();
+  let description;
+  const { docs } = parameters;
+  if (expanded && docs) {
+    description = docs.description?.story;
+    if (!description) {
+      description = docs.storyDescription;
+      if (description) warnStoryDescription();
+    }
   }
+
   const subheading = expanded && name;
 
   return (