From 5ac59e95dd7ac9efb1c4075891fd92460dd1321d Mon Sep 17 00:00:00 2001
From: Felix Roos <flix91@gmail.com>
Date: Thu, 25 Jul 2024 16:07:58 +0200
Subject: [PATCH] handle midin device not found error

---
 packages/midi/midi.mjs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/midi/midi.mjs b/packages/midi/midi.mjs
index 3ce894d6..32e66f6c 100644
--- a/packages/midi/midi.mjs
+++ b/packages/midi/midi.mjs
@@ -169,13 +169,18 @@ const refs = {};
 export async function midin(input) {
   if (isPattern(input)) {
     throw new Error(
-      `.midi does not accept Pattern input. Make sure to pass device name with single quotes. Example: .midi('${
+      `midin: does not accept Pattern as input. Make sure to pass device name with single quotes. Example: midin('${
         WebMidi.outputs?.[0]?.name || 'IAC Driver Bus 1'
       }')`,
     );
   }
   const initial = await enableWebMidi(); // only returns on first init
   const device = getDevice(input, WebMidi.inputs);
+  if (!device) {
+    throw new Error(
+      `midiin: device "${input}" not found.. connected devices: ${getMidiDeviceNamesString(WebMidi.inputs)}`,
+    );
+  }
   if (initial) {
     const otherInputs = WebMidi.inputs.filter((o) => o.name !== device.name);
     logger(