1 files changed, 13 insertions, 0 deletions
diff --git a/packages/gitbook-core/src/shapes/SummaryPart.js b/packages/gitbook-core/src/shapes/SummaryPart.js
new file mode 100644
index 0000000..75d5602
--- /dev/null
+++ b/packages/gitbook-core/src/shapes/SummaryPart.js
@@ -0,0 +1,13 @@
+const React  = require('react');
+const {
+    arrayOf,
+    string,
+    shape
+} = React.PropTypes;
+
+const Article = require('./SummaryArticle');
+
+module.exports = shape({
+    title: string.isRequired,
+    articles: arrayOf(Article)
+});