diff --git a/native_client/javascript/client.ts b/native_client/javascript/client.ts
index ecf00a95..d607060e 100644
--- a/native_client/javascript/client.ts
+++ b/native_client/javascript/client.ts
@@ -134,6 +134,11 @@ if (!args['stream']) {
     stream.feedAudioContent(chunk);
   });
   conversionStream.on('end', () => {
-    console.log(stream.finishStream());
+    if (args['extended']) {
+      let metadata = stream.finishStreamWithMetadata();
+      console.log(candidateTranscriptToString(metadata.transcripts[0]));
+    } else {
+      console.log(stream.finishStream());
+    }
   });
 }
diff --git a/native_client/javascript/index.d.ts b/native_client/javascript/index.d.ts
index b22141ca..339fb36e 100644
--- a/native_client/javascript/index.d.ts
+++ b/native_client/javascript/index.d.ts
@@ -103,7 +103,7 @@ stt(aBuffer: object): string;
  * @return :js:func:`Metadata` object containing multiple candidate transcripts. Each transcript has per-token metadata including timing information.
  * The user is responsible for freeing Metadata by calling :js:func:`FreeMetadata`. Returns undefined on error.
  */
-sttWithMetadata(aBuffer: object, aNumResults: number): Metadata;
+sttWithMetadata(aBuffer: object, aNumResults?: number): Metadata;
 
 /**
  * Create a new streaming inference state. One can then call :js:func:`Stream.feedAudioContent` and :js:func:`Stream.finishStream` on the returned stream object.
@@ -143,7 +143,7 @@ intermediateDecode(aSctx: Stream): string;
  *
  * @return :js:func:`Metadata` object containing multiple candidate transcripts. Each transcript has per-token metadata including timing information. The user is responsible for freeing Metadata by calling :js:func:`FreeMetadata`. Returns undefined on error.
  */
-intermediateDecodeWithMetadata (aNumResults: number): Metadata;
+intermediateDecodeWithMetadata (aNumResults?: number): Metadata;
 
 /**
  * Compute the final decoding of an ongoing streaming inference and return the result. Signals the end of an ongoing streaming inference.
@@ -163,7 +163,7 @@ finishStream(): string;
  *
  * This method will free the stream, it must not be used after this method is called.
  */
-finishStreamWithMetadata(aNumResults: number): Metadata;
+finishStreamWithMetadata(aNumResults?: number): Metadata;
 }
 
 /**
@@ -177,7 +177,7 @@ export function FreeModel(model: Model): void;
 /**
  * Free memory allocated for metadata information.
  *
- * @param metadata Object containing metadata as returned by :js:func:`Model.sttWithMetadata` or :js:func:`Model.finishStreamWithMetadata`
+ * @param metadata Object containing metadata as returned by :js:func:`Model.sttWithMetadata` or :js:func:`Stream.finishStreamWithMetadata`
  */
 export function FreeMetadata(metadata: Metadata): void;
 
diff --git a/native_client/javascript/index.js b/native_client/javascript/index.js
index 7d742aad..f684f503 100644
--- a/native_client/javascript/index.js
+++ b/native_client/javascript/index.js
@@ -211,7 +211,7 @@ Stream.prototype.finishStream = function() {
  */
 Stream.prototype.finishStreamWithMetadata = function(aNumResults) {
     aNumResults = aNumResults || 1;
-    result = binding.FinishStreamWithMetadata(this._impl, aNumResults);
+    let result = binding.FinishStreamWithMetadata(this._impl, aNumResults);
     this._impl = null;
     return result;
 }
@@ -230,7 +230,7 @@ function FreeModel(model) {
 /**
  * Free memory allocated for metadata information.
  *
- * @param {object} metadata Object containing metadata as returned by :js:func:`Model.sttWithMetadata` or :js:func:`Model.finishStreamWithMetadata`
+ * @param {object} metadata Object containing metadata as returned by :js:func:`Model.sttWithMetadata` or :js:func:`Stream.finishStreamWithMetadata`
  */
 function FreeMetadata(metadata) {
     return binding.FreeMetadata(metadata);
diff --git a/taskcluster/tc-asserts.sh b/taskcluster/tc-asserts.sh
index 62f1e8ff..a56a4c49 100755
--- a/taskcluster/tc-asserts.sh
+++ b/taskcluster/tc-asserts.sh
@@ -519,6 +519,12 @@ run_js_streaming_inference_tests()
   status=$?
   set -e
   assert_correct_ldc93s1_lm "${phrase_pbmodel_withlm}" "$status"
+
+  set +e
+  phrase_pbmodel_withlm=$(deepspeech --model ${TASKCLUSTER_TMP_DIR}/${model_name_mmap} --scorer ${TASKCLUSTER_TMP_DIR}/kenlm.scorer --audio ${TASKCLUSTER_TMP_DIR}/${ldc93s1_sample_filename} --stream --extended 2>${TASKCLUSTER_TMP_DIR}/stderr | tail -n 1)
+  status=$?
+  set -e
+  assert_correct_ldc93s1_lm "${phrase_pbmodel_withlm}" "$status"
 }
 
 run_js_streaming_prod_inference_tests()
@@ -529,4 +535,11 @@ run_js_streaming_prod_inference_tests()
   status=$?
   set -e
   assert_correct_ldc93s1_prodmodel "${phrase_pbmodel_withlm}" "$status" "${_bitrate}"
+
+  local _bitrate=$1
+  set +e
+  phrase_pbmodel_withlm=$(deepspeech --model ${TASKCLUSTER_TMP_DIR}/${model_name_mmap} --scorer ${TASKCLUSTER_TMP_DIR}/kenlm.scorer --audio ${TASKCLUSTER_TMP_DIR}/${ldc93s1_sample_filename} --stream --extended 2>${TASKCLUSTER_TMP_DIR}/stderr | tail -n 1)
+  status=$?
+  set -e
+  assert_correct_ldc93s1_prodmodel "${phrase_pbmodel_withlm}" "$status" "${_bitrate}"
 }