refactor: client service

src/lib/event-metadata.ts

@@ -8,7 +8,7 @@ import { generateBech32IdFromETag, tagNameEquals } from './tag'
 import { isWebsocketUrl, normalizeHttpUrl, normalizeUrl } from './url'
 import { isTorBrowser } from './utils'
 
-export function getRelayListFromEvent(event?: Event) {
+export function getRelayListFromEvent(event?: Event | null) {
   if (!event) {
     return { write: BIG_RELAY_URLS, read: BIG_RELAY_URLS, originalRelays: [] }
   }

src/lib/event.ts

@@ -222,7 +222,7 @@ export function getEmbeddedPubkeys(event: Event) {
   return embeddedPubkeys
 }
 
-export function getLatestEvent(events: Event[]) {
+export function getLatestEvent(events: Event[]): Event | undefined {
   return events.sort((a, b) => b.created_at - a.created_at)[0]
 }