diff --git a/src/change_stream.ts b/src/change_stream.ts index 684eec7097..c1d885f65c 100644 --- a/src/change_stream.ts +++ b/src/change_stream.ts @@ -310,7 +310,9 @@ export class ChangeStream extends TypedEven } /** Check if there is any document still available in the Change Stream */ - hasNext(callback?: Callback): Promise | void { + hasNext(): Promise; + hasNext(callback: Callback): void; + hasNext(callback?: Callback): Promise | void { setIsIterator(this); return maybePromise(callback, cb => { getCursor(this, (err, cursor) => {