chore: migrate loadMissedMessages to typescript

app/lib/methods/loadMissedMessages.js → app/lib/methods/loadMissedMessages.ts

@@ -1,20 +1,22 @@
 import database from '../database';
 import log from '../../utils/log';
 import updateMessages from './updateMessages';
+import { IRocketChat } from '../../definitions/IRocketChat';
+import { ILastMessage } from '../../definitions';
 
-const getLastUpdate = async rid => {
+const getLastUpdate = async (rid: string) => {
 	try {
 		const db = database.active;
 		const subsCollection = db.get('subscriptions');
 		const sub = await subsCollection.find(rid);
-		return sub.lastOpen.toISOString();
+		return sub.lastOpen?.toISOString();
 	} catch (e) {
 		// Do nothing
 	}
 	return null;
 };
 
-async function load({ rid: roomId, lastOpen }) {
+async function load(this: IRocketChat, { rid: roomId, lastOpen }: { rid: string; lastOpen: string }) {
 	let lastUpdate;
 	if (lastOpen) {
 		lastUpdate = new Date(lastOpen).toISOString();
@@ -26,14 +28,14 @@ async function load({ rid: roomId, lastOpen }) {
 	return result;
 }
 
-export default function loadMissedMessages(args) {
+export default function loadMissedMessages(this: IRocketChat, args: { rid: string; lastOpen: string }): Promise<void> {
 	return new Promise(async (resolve, reject) => {
 		try {
 			const data = await load.call(this, { rid: args.rid, lastOpen: args.lastOpen });
-
 			if (data) {
-				const { updated, deleted } = data;
-				await updateMessages({ rid: args.rid, update: updated, remove: deleted });
+				const { updated, deleted }: { updated: ILastMessage[]; deleted: ILastMessage[] } = data;
+				// loaderItem is null only to surpass the obligatoriness of the item in the function, as soon as it is migrated it will not be necessary.
+				await updateMessages({ rid: args.rid, update: updated, remove: deleted, loaderItem: null });
 			}
 			resolve();
 		} catch (e) {