From 5131d524ce9273bf79df0454c746a0fd14539352 Mon Sep 17 00:00:00 2001
From: Dave Horton <daveh@beachdognet.com>
Date: Mon, 27 Mar 2023 14:13:39 -0400
Subject: [PATCH] bugfix: allow for empty transcripts that nuance returns

---
 lib/tasks/gather.js     | 4 ++++
 lib/tasks/transcribe.js | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/tasks/gather.js b/lib/tasks/gather.js
index 6db19a17..c28e1473 100644
--- a/lib/tasks/gather.js
+++ b/lib/tasks/gather.js
@@ -560,6 +560,10 @@ class TaskGather extends Task {
     }
 
     evt = this.normalizeTranscription(evt, this.vendor, 1, this.language);
+    if (evt.alternatives.length === 0) {
+      this.logger.info({evt}, 'TaskGather:_onTranscription - got empty transcript, continue listening');
+      return;
+    }
 
     if (this.earlyHintsMatch && evt.is_final === false) {
       const transcript = evt.alternatives[0].transcript?.toLowerCase();
diff --git a/lib/tasks/transcribe.js b/lib/tasks/transcribe.js
index daf4bb3e..f9c85659 100644
--- a/lib/tasks/transcribe.js
+++ b/lib/tasks/transcribe.js
@@ -259,8 +259,11 @@ class TaskTranscribe extends Task {
     this.logger.debug({evt}, 'TaskTranscribe:_onTranscription - before normalization');
 
     evt = this.normalizeTranscription(evt, this.vendor, channel, this.language);
-
     this.logger.debug({evt}, 'TaskTranscribe:_onTranscription');
+    if (evt.alternatives.length === 0) {
+      this.logger.info({evt}, 'TaskTranscribe:_onTranscription - got empty transcript, continue listening');
+      return;
+    }
 
     if (evt.alternatives[0]?.transcript === '' && !cs.callGone && !this.killed) {
       if (['microsoft', 'deepgram'].includes(this.vendor)) {