From 5ee4e39bc78eb2ab28b7c7ac26379fd219ec8195 Mon Sep 17 00:00:00 2001
From: Bruno Windels <274386+bwindels@users.noreply.github.com>
Date: Wed, 11 May 2022 10:06:05 +0200
Subject: [PATCH] add return type

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

diff --git a/src/matrix/calls/CallHandler.ts b/src/matrix/calls/CallHandler.ts
index 92f7314c..07ed8492 100644
--- a/src/matrix/calls/CallHandler.ts
+++ b/src/matrix/calls/CallHandler.ts
@@ -40,7 +40,7 @@ export type Options = Omit<GroupCallOptions, "emitUpdate" | "createTimeout"> & {
     clock: Clock
 };
 
-function getRoomMemberKey(roomId: string, userId: string) {
+function getRoomMemberKey(roomId: string, userId: string): string {
     return JSON.stringify(roomId)+`,`+JSON.stringify(userId);
 }