data: withAnnotationParts: don't explode on empty annotation?

1 files changed, 11 insertions, 1 deletions

diff --git a/src/data/composite/things/content/withAnnotationParts.js b/src/data/composite/things/content/withAnnotationParts.js
index 6311b57a..0c5a0294 100644
--- a/src/data/composite/things/content/withAnnotationParts.js
+++ b/src/data/composite/things/content/withAnnotationParts.js
@@ -1,5 +1,5 @@
 import {input, templateCompositeFrom} from '#composite';
-import {transposeArrays} from '#sugar';
+import {empty, transposeArrays} from '#sugar';
 import {is} from '#validators';
 
 import {raiseOutputWithoutDependency} from '#composite/control-flow';
@@ -33,6 +33,16 @@ export default templateCompositeFrom({
     }),
 
     {
+      dependencies: ['#contentNodeLists'],
+      compute: (continuation, {
+        ['#contentNodeLists']: nodeLists,
+      }) => continuation({
+        ['#contentNodeLists']:
+          nodeLists.filter(list => !empty(list)),
+      }),
+    },
+
+    {
       dependencies: ['#contentNodeLists', input('mode')],
       compute: (continuation, {
         ['#contentNodeLists']: nodeLists,