Add createEvent and now

src/util/nostr.ts

@@ -2,6 +2,11 @@ import type {Event} from 'nostr-tools'
 import {verifySignature, getEventHash, matchFilter as nostrToolsMatchFilter} from 'nostr-tools'
 import {cached} from "./LRUCache"
 
+// ===========================================================================
+// General-purpose
+
+const now = () => Math.round(Date.now() / 1000)
+
 // ===========================================================================
 // Relays
 
@@ -44,6 +49,9 @@ export const toNostrURI = (s: string) => `nostr:${s}`
 // ===========================================================================
 // Events
 
+export const createEvent = (kind: number, {content = "", tags = [], created_at = now()}) =>
+  ({kind, content, tags, created_at})
+
 export const hasValidSignature = cached({
   maxSize: 10000,
   getKey: ([e]: any[]) => [getEventHash(e), e.sig].join(":"),