From 7882e47c85f05b5bc9a6c3b99237a212c31281cf Mon Sep 17 00:00:00 2001
From: Chris Duncan <chris@codecow.com>
Date: Fri, 26 Jun 2026 14:50:13 -0700
Subject: [PATCH] Move async message data checks prior to execution.

---
 src/lib/nano25519.ts | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/src/lib/nano25519.ts b/src/lib/nano25519.ts
index b9c9790..286821b 100644
--- a/src/lib/nano25519.ts
+++ b/src/lib/nano25519.ts
@@ -198,27 +198,24 @@ const nano25519_worker_init = ({ derive, sign, verify }: typeof nano25519) => {
 	 */
 	function handleMessage (message: unknown): void {
 		NODE: if (host == null) return queueMicrotask(() => handleMessage(message))
+		if (message == null
+			|| typeof message !== 'object'
+			|| !('data' in message)
+			|| message.data == null
+			|| typeof message.data !== 'object'
+			|| !('url' in message.data)
+			|| typeof message.data.url !== 'string'
+			|| !('id' in message.data)
+			|| typeof message.data.id !== 'string'
+			|| !('action' in message.data)
+			|| typeof message.data.action !== 'string'
+		) return
 		let result: undefined | boolean | string | Uint8Array<ArrayBuffer>
 		let url: undefined | string
 		let id: undefined | string
 		try {
-			if (message == null
-				|| typeof message !== 'object'
-				|| !('data' in message)
-				|| message.data == null
-				|| typeof message.data !== 'object'
-				|| !('url' in message.data)
-				|| typeof message.data.url !== 'string'
-				|| !('id' in message.data)
-				|| typeof message.data.id !== 'string'
-				|| !('action' in message.data)
-				|| typeof message.data.action !== 'string'
-			) {
-				throw new TypeError('Invalid nano25519Worker request')
-			}
 			const data: Data = message.data as object & { url: string, id: string, action: string }
 			{ ({ url, id } = data) }
-			if (typeof url !== 'string' || typeof id !== 'string') return
 			if (url !== client) return
 
 			if (data.action === 'start') {
-- 
2.52.0