fix: handle abort reason correctly

src/services/twilio-conversation.ts

@@ -267,7 +267,12 @@ export class TwilioConversationClient {
     do {
       if (aborted) {
         await this.deleteConversation(conversationSid)
-        throw new Error('Aborted waiting for reply')
+        const reason = stopSignal?.reason || 'Aborted waiting for reply'
+        if (reason instanceof Error) {
+          throw reason
+        } else {
+          throw new Error(reason)
+        }
       }
       const response = await this.fetchMessages(conversationSid)
       if (response.messages.length > 1) {

test/twilio-conversation.test.ts

@@ -127,12 +127,12 @@ test('TwilioConversationClient.sendAndWaitForReply.stopSignal', async (t) => {
         intervalMs: 5000, // 5 seconds
         stopSignal: controller.signal
       })
-      controller.abort()
+      controller.abort('Aborted')
       return promise
     },
     {
       instanceOf: Error,
-      message: 'Aborted waiting for reply'
+      message: 'Aborted'
     }
   )
 })