From d0e83522e10b1923146c4db6ef241fe2640338ef Mon Sep 17 00:00:00 2001
From: Derek Burgman <derek@dereekb.com>
Date: Wed, 13 Jul 2022 12:08:18 -0500
Subject: [PATCH] fix: fixed AbstractSingleItemDbxFirebaseDocument
 setFirestoreCollection

- fixed issue where AbstractSingleItemDbxFirebaseDocument's setFirestoreCollection did not handle the Maybe input properly
---
 .../model/store/store.subcollection.document.ts    | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/packages/dbx-firebase/src/lib/model/store/store.subcollection.document.ts b/packages/dbx-firebase/src/lib/model/store/store.subcollection.document.ts
index f979886e2..7002dde1d 100644
--- a/packages/dbx-firebase/src/lib/model/store/store.subcollection.document.ts
+++ b/packages/dbx-firebase/src/lib/model/store/store.subcollection.document.ts
@@ -79,12 +79,16 @@ export class AbstractSingleItemDbxFirebaseDocument<T, PT, D extends FirestoreDoc
    * Sets the SingleItemFirestoreCollection to use.
    */
   override readonly setFirestoreCollection = this.updater((state, firestoreCollection: Maybe<FirestoreCollection<T, D>>) => {
-    const id = (firestoreCollection as SingleItemFirestoreCollection<T, PT, D, PD>).singleItemIdentifier;
-
-    if (id != null) {
-      return { ...state, firestoreCollection, id };
+    if (firestoreCollection != null) {
+      const id = (firestoreCollection as SingleItemFirestoreCollection<T, PT, D, PD>).singleItemIdentifier;
+
+      if (id != null) {
+        return { ...state, firestoreCollection, id };
+      } else {
+        throw new Error('AbstractSingleItemDbxFirebaseDocument only accepts SingleItemFirestoreCollection values with a singleItemIdentifier set for setFirestoreCollection.');
+      }
     } else {
-      throw new Error('AbstractSingleItemDbxFirebaseDocument only accepts SingleItemFirestoreCollection values with a singleItemIdentifier set for setFirestoreCollection.');
+      return { ...state, firestoreCollection: null };
     }
   });