Updating other subscription part when deleting a subscription

src/components/user/User.tsx

@@ -91,6 +91,14 @@ const User: Component<Props> = (props) => {
       return { username, ...userDocument };
     };
 
+    const removeSubscription = (userDocument: any) => {
+      const subscriptions = userDocument.subscriptions || [];
+      userDocument.subscriptions = subscriptions.filter(
+        (subscription: any) => subscription.username !== username
+      );
+      return { username, ...userDocument };
+    };
+
     const defaultUserDocument = {
       database,
     };
@@ -98,7 +106,7 @@ const User: Component<Props> = (props) => {
     for (let i = 0; i < updatedSubscriptions.length; i++) {
       let subscription = updatedSubscriptions[i];
       if (!isIn(subscription.username, subscriptions)) {
-        update(
+        await update(
           userId(subscription.username, database),
           addSubscription,
           defaultUserDocument
@@ -115,6 +123,11 @@ const User: Component<Props> = (props) => {
     for (let i = 0; i < subscriptions.length; i++) {
       let subscription = subscriptions[i];
       if (!isIn(subscription.username, updatedSubscriptions)) {
+        await update(
+          userId(subscription.username, database),
+          removeSubscription,
+          defaultUserDocument
+        );
         console.log({
           caller: 'User / submitHandler / deleted subscription',
           username: subscription.username,