chore: add comment

Author: eduardoboucas

Diff for: src/store.ts

@@ -262,6 +262,8 @@ export class Store {
       return iterator
     }
 
+    // We can't use `async/await` here because that would make the signature
+    // incompatible with one of the overloads.
     // eslint-disable-next-line promise/prefer-await-to-then
     return collectIterator(iterator).then((items) =>
       items.reduce(

Diff for: src/store_list.ts

@@ -19,6 +19,8 @@ export function listStores(
     return iterator
   }
 
+  // We can't use `async/await` here because that would make the signature
+  // incompatible with one of the overloads.
   // eslint-disable-next-line promise/prefer-await-to-then
   return collectIterator(iterator).then((results) =>
     results.reduce(