diff --git a/goldens/public-api/core/primitives/event-dispatch/index.md b/goldens/public-api/core/primitives/event-dispatch/index.md
index bd08a83a1bf..8b4f762dfc8 100644
--- a/goldens/public-api/core/primitives/event-dispatch/index.md
+++ b/goldens/public-api/core/primitives/event-dispatch/index.md
@@ -28,6 +28,12 @@ export class Dispatcher {
     unregisterHandler(namespace: string, name: string): void;
 }
 
+// @public (undocumented)
+export interface EarlyJsactionDataContainer {
+    // (undocumented)
+    _ejsa?: EarlyJsactionData;
+}
+
 // @public
 export class EventContract implements UnrenamedEventContract {
     constructor(containerManager: EventContractContainerManager);
diff --git a/packages/core/primitives/event-dispatch/index.ts b/packages/core/primitives/event-dispatch/index.ts
index 414cc1f9f7e..5736aa9aa59 100644
--- a/packages/core/primitives/event-dispatch/index.ts
+++ b/packages/core/primitives/event-dispatch/index.ts
@@ -8,6 +8,7 @@
 
 export {Dispatcher, registerDispatcher} from './src/dispatcher';
 export {EventContractContainer} from './src/event_contract_container';
+export type {EarlyJsactionDataContainer} from './src/earlyeventcontract';
 export {EventContract} from './src/eventcontract';
 export {bootstrapEventContract, bootstrapEarlyEventContract} from './src/register_events';
 
diff --git a/packages/core/primitives/event-dispatch/src/register_events.ts b/packages/core/primitives/event-dispatch/src/register_events.ts
index 2c15fe627a8..0f206f23454 100644
--- a/packages/core/primitives/event-dispatch/src/register_events.ts
+++ b/packages/core/primitives/event-dispatch/src/register_events.ts
@@ -54,8 +54,8 @@ export function bootstrapEarlyEventContract(
   field: string,
   container: HTMLElement,
   appId: string,
-  eventTypes: string[],
-  captureEventTypes: string[],
+  eventTypes?: string[],
+  captureEventTypes?: string[],
   earlyJsactionTracker: EventContractTracker<EarlyJsactionDataContainer> = window as unknown as EventContractTracker<EarlyJsactionDataContainer>,
 ) {
   if (!earlyJsactionTracker[field]) {
@@ -63,6 +63,6 @@ export function bootstrapEarlyEventContract(
   }
   earlyJsactionTracker[field][appId] = {};
   const eventContract = new EarlyEventContract(earlyJsactionTracker[field][appId], container);
-  eventContract.addEvents(eventTypes);
-  eventContract.addEvents(captureEventTypes, true);
+  eventTypes && eventContract.addEvents(eventTypes);
+  captureEventTypes && eventContract.addEvents(captureEventTypes, true);
 }