Check that the node exists before trying to access its id fixes #4162 (…

…#4173)
gatsbyjs · Feb 21, 2018 · b3c8a45 · b3c8a45
1 parent cc9dbdf
commit b3c8a45
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/packages/gatsby/src/internal-plugins/query-runner/page-query-runner.js b/packages/gatsby/src/internal-plugins/query-runner/page-query-runner.js
@@ -123,10 +123,12 @@ const findDirtyIds = actions => {
   return actions.reduce((dirtyIds, action) => {
     const node = action.payload
 
-    // find invalid pagesAndLayouts
+    if (!node || !node.id || !node.internal.type) return dirtyIds
+
+    // Find pagesAndLayouts that depend on this node so are now dirty.
     dirtyIds = dirtyIds.concat(state.componentDataDependencies.nodes[node.id])
 
-    // Find invalid connections
+    // Find connections that depend on this node so are now invalid.
     dirtyIds = dirtyIds.concat(
       state.componentDataDependencies.connections[node.internal.type]
     )