From 1a5289ec65e4588e769edc7becd0bd10b92051de Mon Sep 17 00:00:00 2001
From: TimTIM <i@timtim.hk>
Date: Tue, 30 Nov 2021 02:20:24 +0800
Subject: [PATCH 1/2] Fix return type of hasNext()

---
 src/change_stream.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/change_stream.ts b/src/change_stream.ts
index 684eec7097..554485e1a0 100644
--- a/src/change_stream.ts
+++ b/src/change_stream.ts
@@ -310,7 +310,7 @@ export class ChangeStream<TSchema extends Document = Document> extends TypedEven
   }
 
   /** Check if there is any document still available in the Change Stream */
-  hasNext(callback?: Callback): Promise<void> | void {
+  hasNext(callback?: Callback): Promise<boolean> | void {
     setIsIterator(this);
     return maybePromise(callback, cb => {
       getCursor(this, (err, cursor) => {

From c728ee74c7f633267fc8fb7d388c44c3b51e60ec Mon Sep 17 00:00:00 2001
From: TimTIM <i@timtim.hk>
Date: Tue, 30 Nov 2021 04:04:05 +0800
Subject: [PATCH 2/2] Improve hasNext() typing in src/change_stream.ts

Co-authored-by: Neal Beeken <neal.beeken@mongodb.com>
---
 src/change_stream.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/change_stream.ts b/src/change_stream.ts
index 554485e1a0..c1d885f65c 100644
--- a/src/change_stream.ts
+++ b/src/change_stream.ts
@@ -310,6 +310,8 @@ export class ChangeStream<TSchema extends Document = Document> extends TypedEven
   }
 
   /** Check if there is any document still available in the Change Stream */
+  hasNext(): Promise<boolean>;
+  hasNext(callback: Callback<boolean>): void;
   hasNext(callback?: Callback): Promise<boolean> | void {
     setIsIterator(this);
     return maybePromise(callback, cb => {