faster "event seen" check

src/js/nostr/Events.ts

@@ -46,6 +46,7 @@ const Events = {
   DEFAULT_GLOBAL_FILTER,
   getEventHash,
   db: events,
+  seen: new Set<string>(),
   deletedEvents: new Set<string>(),
   directMessagesByUser: new Map<string, SortedLimitedEventSet>(),
   latestNotificationByTargetAndKind: new Map<string, string>(),
@@ -411,7 +412,7 @@ const Events = {
   },
   handle(event: Event & { id: string }, force = false, saveToIdb = true): boolean {
     if (!event) return;
-    if (!force && !!this.db.by('id', event.id)) {
+    if (!force && this.seen.has(event.id)) {
       return false;
     }
     if (!force && !this.acceptEvent(event)) {
@@ -437,6 +438,8 @@ const Events = {
       return false;
     }
 
+    this.seen.add(event.id);
+
     this.handledMsgsPerSecond++;
 
     PubSub.subscribedEventIds.delete(event.id);

src/js/nostr/PubSub.ts

@@ -23,8 +23,18 @@ let dev: any = {
 };
 const relayPool = new RelayPool(Relays.DEFAULT_RELAYS, {
   useEventCache: false,
-
-  externalGetEventById: (id) => Events.db.by('id', id),
+  externalGetEventById: (id) =>
+    (Events.seen.has(id) && {
+      // make externalGetEventById take booleans instead of events?
+      sig: '',
+      id: '',
+      kind: 0,
+      tags: [],
+      content: '',
+      created_at: 0,
+      pubkey: '',
+    }) ||
+    undefined,
 });
 localState.get('dev').on((d) => {
   dev = d;

src/js/nostr/Relays.ts

@@ -307,7 +307,7 @@ const Relays = {
   },
   relayInit(url: string, subscribeAll = true) {
     const relay = relayInit(url, (id) => {
-      const have = !!Events.db.by('id', id);
+      const have = !!Events.seen.has(id);
       // console.log('have?', have);
       return have;
     });