diff --git a/packages/SwingSet/src/kernel/state/storageHelper.js b/packages/SwingSet/src/kernel/state/storageHelper.js
index 835153c785e..86b2b0d4dfa 100644
--- a/packages/SwingSet/src/kernel/state/storageHelper.js
+++ b/packages/SwingSet/src/kernel/state/storageHelper.js
@@ -26,7 +26,10 @@ export function* enumeratePrefixedKeys(kvStore, prefix, exclusiveEnd) {
   }
 }
 
-// NOTE: awkward naming: the thing that returns a stream of keys is named
+/**
+ * @param {KVStore} kvStore
+ * @param {string} prefix
+ */ // NOTE: awkward naming: the thing that returns a stream of keys is named
 // "enumerate..." while the thing that returns a stream of values is named
 // "get..."
 function* enumerateNumericPrefixedKeys(kvStore, prefix) {
@@ -43,12 +46,20 @@ function* enumerateNumericPrefixedKeys(kvStore, prefix) {
   }
 }
 
+/**
+ * @param {KVStore} kvStore
+ * @param {string} prefix
+ */
 export function* getPrefixedValues(kvStore, prefix) {
   for (const key of enumerateNumericPrefixedKeys(kvStore, prefix)) {
     yield kvStore.get(key) || Fail`enumerate ensures get`;
   }
 }
 
+/**
+ * @param {KVStore} kvStore
+ * @param {string} prefix
+ */
 export function deletePrefixedKeys(kvStore, prefix) {
   // this is kind of like a deleteRange() would be, but can be implemented
   // efficiently without backend DB support because it only looks at numeric