Types, better-sqlite3, and worker_threads for our sqlite

ts/models/conversations.ts

@@ -1388,7 +1388,7 @@ export class ConversationModel extends window.Backbone.Model<
       profileSharing: this.get('profileSharing'),
       publicParams: this.get('publicParams'),
       secretParams: this.get('secretParams'),
-      sharedGroupNames: this.get('sharedGroupNames')!,
+      sharedGroupNames: this.get('sharedGroupNames'),
       shouldShowDraft,
       sortedGroupMembers,
       timestamp,
@@ -2574,7 +2574,7 @@ export class ConversationModel extends window.Backbone.Model<
       sent_at: now,
       received_at: window.Signal.Util.incrementMessageCounter(),
       received_at_ms: now,
-      unread: true,
+      unread: 1,
       changedId: conversationId || this.id,
       profileChange,
       // TODO: DESKTOP-722

ts/models/messages.ts

@@ -1745,7 +1745,7 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
       body: '',
       bodyRanges: undefined,
       attachments: [],
-      quote: null,
+      quote: undefined,
       contact: [],
       sticker: null,
       preview: [],
@@ -2034,7 +2034,7 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
       return null;
     }
 
-    this.set({ errors: null });
+    this.set({ errors: undefined });
 
     // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
     const conversation = this.getConversation()!;
@@ -3934,7 +3934,7 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
       this.clearNotifications(reaction.get('fromId'));
     }
 
-    const newCount = this.get('reactions').length;
+    const newCount = (this.get('reactions') || []).length;
     window.log.info(
       `Done processing reaction for message ${messageId}. Went from ${count} to ${newCount} reactions.`
     );