From 56fe3dd5dde4285dde08be52586593062b93d822 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Mon, 17 Apr 2023 20:53:19 -0400
Subject: [PATCH] nip19: improve return type

---
 nip19.ts | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/nip19.ts b/nip19.ts
index 8780312..ff370eb 100644
--- a/nip19.ts
+++ b/nip19.ts
@@ -23,10 +23,15 @@ export type AddressPointer = {
   relays?: string[]
 }
 
-export function decode(nip19: string): {
-  type: string
-  data: ProfilePointer | EventPointer | AddressPointer | string
-} {
+export type DecodeResult =
+  | {type: 'nprofile'; data: ProfilePointer}
+  | {type: 'nevent'; data: EventPointer}
+  | {type: 'naddr'; data: AddressPointer}
+  | {type: 'nsec'; data: string}
+  | {type: 'npub'; data: string}
+  | {type: 'note'; data: string}
+
+export function decode(nip19: string): DecodeResult {
   let {prefix, words} = bech32.decode(nip19, Bech32MaxSize)
   let data = new Uint8Array(bech32.fromWords(words))