From e8ed3ac08f37dd047b62d1a400dadac3a73dea0d Mon Sep 17 00:00:00 2001
From: buttercat1791 <mjjurkoic@gmail.com>
Date: Fri, 14 Mar 2025 08:09:02 -0500
Subject: [PATCH] Throw error rather than return `null`

---
 src/lib/data_structures/publication_tree.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/data_structures/publication_tree.ts b/src/lib/data_structures/publication_tree.ts
index bac54a0..1cdbe16 100644
--- a/src/lib/data_structures/publication_tree.ts
+++ b/src/lib/data_structures/publication_tree.ts
@@ -136,10 +136,10 @@ export class PublicationTree implements AsyncIterable<NDKEvent> {
    * @returns Returns an array of events in the addressed event's hierarchy, beginning with the
    * root and ending with the addressed event.
    */
-  async getHierarchy(address: string): Promise<NDKEvent[] | null> {
+  async getHierarchy(address: string): Promise<NDKEvent[]> {
     let node = this.#nodes.get(address);
     if (!node) {
-      return null;
+      throw new Error(`PublicationTree: Node with address ${address} not found.`);
     }
 
     const hierarchy: NDKEvent[] = [this.#events.get(address)!];