refactor: upgrade nip17

packages/system/src/cache/events.ts

@@ -19,4 +19,8 @@ export class EventsCache extends FeedCache<NostrEvent> {
   takeSnapshot(): Array<NostrEvent> {
     return [...this.cache.values()];
   }
+
+  async search() {
+    return <Array<NostrEvent>>[];
+  }
 }

packages/system/src/cache/relay-metric.ts

@@ -19,4 +19,8 @@ export class RelayMetricCache extends FeedCache<RelayMetrics> {
   takeSnapshot(): Array<RelayMetrics> {
     return [...this.cache.values()];
   }
+
+  async search() {
+    return <Array<RelayMetrics>>[];
+  }
 }

packages/system/src/cache/user-follows-lists.ts

@@ -26,4 +26,8 @@ export class UserFollowsCache extends FeedCache<UsersFollows> {
   takeSnapshot(): Array<UsersFollows> {
     return [...this.cache.values()];
   }
+
+  async search() {
+    return <Array<UsersFollows>>[];
+  }
 }

packages/system/src/cache/user-relays.ts

@@ -26,4 +26,8 @@ export class UserRelaysCache extends FeedCache<UsersRelays> {
   takeSnapshot(): Array<UsersRelays> {
     return [...this.cache.values()];
   }
+
+  async search() {
+    return <Array<UsersRelays>>[];
+  }
 }