diff --git a/index.d.ts b/index.d.ts
index 93737f69..961ddfa3 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -128,8 +128,9 @@ export interface DailyCallOptions {
   cssText?: string;
   dailyConfig?: DailyAdvancedConfig;
   subscribeToTracksAutomatically?: boolean;
-  videoSource?: string | MediaStreamTrack;
-  audioSource?: string | MediaStreamTrack;
+  videoSource?: boolean | string | MediaStreamTrack;
+  audioSource?: boolean | string | MediaStreamTrack;
+  userName?: string;
 }
 
 export interface DailyLoadOptions extends DailyCallOptions {
@@ -522,47 +523,46 @@ export interface DailyEventObjectLangUpdated {
   langSetting: DailyLanguageSetting;
 }
 
-export type DailyEventObject<
-  T extends DailyEvent = any
-> = T extends DailyEventObjectAppMessage['action']
-  ? DailyEventObjectAppMessage
-  : T extends DailyEventObjectNoPayload['action']
-  ? DailyEventObjectNoPayload
-  : T extends DailyEventObjectCameraError['action']
-  ? DailyEventObjectCameraError
-  : T extends DailyEventObjectFatalError['action']
-  ? DailyEventObjectFatalError
-  : T extends DailyEventObjectGenericError['action']
-  ? DailyEventObjectGenericError
-  : T extends DailyEventObjectParticipants['action']
-  ? DailyEventObjectParticipants
-  : T extends DailyEventObjectParticipant['action']
-  ? DailyEventObjectParticipant
-  : T extends DailyEventObjectWaitingParticipant['action']
-  ? DailyEventObjectWaitingParticipant
-  : T extends DailyEventObjectAccessState['action']
-  ? DailyEventObjectAccessState
-  : T extends DailyEventObjectMeetingSessionUpdated['action']
-  ? DailyEventObjectMeetingSessionUpdated
-  : T extends DailyEventObjectTrack['action']
-  ? DailyEventObjectTrack
-  : T extends DailyEventObjectRecordingStarted['action']
-  ? DailyEventObjectRecordingStarted
-  : T extends DailyEventObjectMouseEvent['action']
-  ? DailyEventObjectMouseEvent
-  : T extends DailyEventObjectTouchEvent['action']
-  ? DailyEventObjectTouchEvent
-  : T extends DailyEventObjectNetworkQualityEvent['action']
-  ? DailyEventObjectNetworkQualityEvent
-  : T extends DailyEventObjectNetworkConnectionEvent['action']
-  ? DailyEventObjectNetworkConnectionEvent
-  : T extends DailyEventObjectActiveSpeakerChange['action']
-  ? DailyEventObjectActiveSpeakerChange
-  : T extends DailyEventObjectActiveSpeakerModeChange['action']
-  ? DailyEventObjectActiveSpeakerModeChange
-  : T extends DailyEventObjectLangUpdated['action']
-  ? DailyEventObjectLangUpdated
-  : any;
+export type DailyEventObject<T extends DailyEvent = any> =
+  T extends DailyEventObjectAppMessage['action']
+    ? DailyEventObjectAppMessage
+    : T extends DailyEventObjectNoPayload['action']
+    ? DailyEventObjectNoPayload
+    : T extends DailyEventObjectCameraError['action']
+    ? DailyEventObjectCameraError
+    : T extends DailyEventObjectFatalError['action']
+    ? DailyEventObjectFatalError
+    : T extends DailyEventObjectGenericError['action']
+    ? DailyEventObjectGenericError
+    : T extends DailyEventObjectParticipants['action']
+    ? DailyEventObjectParticipants
+    : T extends DailyEventObjectParticipant['action']
+    ? DailyEventObjectParticipant
+    : T extends DailyEventObjectWaitingParticipant['action']
+    ? DailyEventObjectWaitingParticipant
+    : T extends DailyEventObjectAccessState['action']
+    ? DailyEventObjectAccessState
+    : T extends DailyEventObjectMeetingSessionUpdated['action']
+    ? DailyEventObjectMeetingSessionUpdated
+    : T extends DailyEventObjectTrack['action']
+    ? DailyEventObjectTrack
+    : T extends DailyEventObjectRecordingStarted['action']
+    ? DailyEventObjectRecordingStarted
+    : T extends DailyEventObjectMouseEvent['action']
+    ? DailyEventObjectMouseEvent
+    : T extends DailyEventObjectTouchEvent['action']
+    ? DailyEventObjectTouchEvent
+    : T extends DailyEventObjectNetworkQualityEvent['action']
+    ? DailyEventObjectNetworkQualityEvent
+    : T extends DailyEventObjectNetworkConnectionEvent['action']
+    ? DailyEventObjectNetworkConnectionEvent
+    : T extends DailyEventObjectActiveSpeakerChange['action']
+    ? DailyEventObjectActiveSpeakerChange
+    : T extends DailyEventObjectActiveSpeakerModeChange['action']
+    ? DailyEventObjectActiveSpeakerModeChange
+    : T extends DailyEventObjectLangUpdated['action']
+    ? DailyEventObjectLangUpdated
+    : any;
 
 export interface DailyFaceInfo {
   score: number;
@@ -627,7 +627,7 @@ export type DailyAccessRequest = {
 
 export interface DailyCall {
   iframe(): HTMLIFrameElement | null;
-  join(properties?: DailyCallOptions): Promise<DailyParticipantsObject | void>;
+  join(properties?: DailyCallOptions): Promise<DailyParticipantsObject>;
   leave(): Promise<void>;
   destroy(): Promise<void>;
   loadCss(properties: {