From e55ddbd8e644cbfd4509be766ca0ac07741077b0 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Mon, 20 Nov 2023 19:57:03 -0600
Subject: [PATCH] eventMatchesTemplate: drop `nonce` tags before comparison

---
 src/utils.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/utils.ts b/src/utils.ts
index 11ef0ea..2b258fc 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -107,8 +107,22 @@ function dedupeEvents<K extends number>(events: Event<K>[]): Event<K>[] {
   return [...new Map(events.map((event) => [event.id, event])).values()];
 }
 
+/** Return a copy of the event with the given tags removed. */
+function stripTags<E extends EventTemplate>(event: E, tags: string[] = []): E {
+  if (!tags.length) return event;
+  return {
+    ...event,
+    tags: event.tags.filter(([name]) => !tags.includes(name)),
+  };
+}
+
 /** Ensure the template and event match on their shared keys. */
 function eventMatchesTemplate(event: Event, template: EventTemplate): boolean {
+  const whitelist = ['nonce'];
+
+  event = stripTags(event, whitelist);
+  template = stripTags(template, whitelist);
+
   return getEventHash(event) === getEventHash({ pubkey: event.pubkey, ...template });
 }