1 files changed, 11 insertions, 3 deletions
diff --git a/src/data/composite/wiki-data/withReverseContributionList.js b/src/data/composite/wiki-data/withReverseContributionList.js
index eccb58b..91e125e 100644
--- a/src/data/composite/wiki-data/withReverseContributionList.js
+++ b/src/data/composite/wiki-data/withReverseContributionList.js
@@ -11,7 +11,8 @@
 
 import {input, templateCompositeFrom} from '#composite';
 
-import {exitWithoutDependency} from '#composite/control-flow';
+import {exitWithoutDependency, raiseOutputWithoutDependency}
+  from '#composite/control-flow';
 
 import inputWikiData from './inputWikiData.js';
 
@@ -32,10 +33,17 @@ export default templateCompositeFrom({
   outputs: ['#reverseContributionList'],
 
   steps: () => [
+    // Early exit with an empty array if the data list isn't available.
     exitWithoutDependency({
       dependency: input('data'),
       value: input.value([]),
+    }),
+
+    // Raise an empty array (don't early exit) if the data list is empty.
+    raiseOutputWithoutDependency({
+      dependency: input('data'),
       mode: input.value('empty'),
+      output: input.value({'#reverseContributionList': []}),
     }),
 
     {
@@ -58,10 +66,10 @@ export default templateCompositeFrom({
           for (const referencingThing of data) {
             const referenceList = referencingThing[list];
 
-            // Destructuring {who} is the only unique part of the
+            // Destructuring {artist} is the only unique part of the
             // withReverseContributionList implementation, compared to
             // withReverseReferneceList.
-            for (const {who: referencedThing} of referenceList) {
+            for (const {artist: referencedThing} of referenceList) {
               if (cacheRecord.has(referencedThing)) {
                 cacheRecord.get(referencedThing).push(referencingThing);
               } else {