diff --git a/sdk/typescript/src/node/serverSentEventGenerator.ts b/sdk/typescript/src/node/serverSentEventGenerator.ts
index ba1f638c..63446830 100644
--- a/sdk/typescript/src/node/serverSentEventGenerator.ts
+++ b/sdk/typescript/src/node/serverSentEventGenerator.ts
@@ -1,4 +1,4 @@
-import { DatastarEventOptions, EventType, sseHeaders } from "../types.ts";
+import { DatastarEventOptions, EventType, sseHeaders, StreamOptions } from "../types.ts";
 
 import { ServerSentEventGenerator as AbstractSSEGenerator } from "../abstractServerSentEventGenerator.ts";
 
@@ -47,11 +47,7 @@ export class ServerSentEventGenerator extends AbstractSSEGenerator {
     req: IncomingMessage,
     res: ServerResponse,
     onStart: (stream: ServerSentEventGenerator) => Promise<void> | void,
-    options?: Partial<{
-      onError: (error: unknown) => Promise<void> | void;
-      onAbort: () => Promise<void> | void;
-      keepalive: boolean;
-    }>,
+    options?: StreamOptions,
   ): Promise<void> {
     const generator = new ServerSentEventGenerator(req, res);
 
diff --git a/sdk/typescript/src/types.ts b/sdk/typescript/src/types.ts
index 719bdf61..f6ea9540 100644
--- a/sdk/typescript/src/types.ts
+++ b/sdk/typescript/src/types.ts
@@ -22,6 +22,13 @@ import type { Jsonifiable } from "npm:type-fest";
 export type FragmentMergeMode = typeof FragmentMergeModes[number];
 export type EventType = typeof EventTypes[number];
 
+export type StreamOptions = Partial<{
+  onError: (error: unknown) => Promise<void> | void;
+  onAbort: (reason?: string) => Promise<void> | void;
+  responseInit: ResponseInit;
+  keepalive: boolean;
+}>
+
 export interface DatastarEventOptions {
   eventId?: string;
   retryDuration?: number;
diff --git a/sdk/typescript/src/web/serverSentEventGenerator.ts b/sdk/typescript/src/web/serverSentEventGenerator.ts
index 79f47c30..546672bc 100644
--- a/sdk/typescript/src/web/serverSentEventGenerator.ts
+++ b/sdk/typescript/src/web/serverSentEventGenerator.ts
@@ -1,4 +1,4 @@
-import { DatastarEventOptions, EventType, sseHeaders } from "../types.ts";
+import { DatastarEventOptions, EventType, sseHeaders, StreamOptions } from "../types.ts";
 import { ServerSentEventGenerator as AbstractSSEGenerator } from "../abstractServerSentEventGenerator.ts";
 
 import type { Jsonifiable } from "npm:type-fest";
@@ -41,12 +41,7 @@ export class ServerSentEventGenerator extends AbstractSSEGenerator {
    */
   static stream(
     onStart: (stream: ServerSentEventGenerator) => Promise<void> | void,
-    options?: Partial<{
-      onError: (error: unknown) => Promise<void> | void;
-      onAbort: (reason: string) => Promise<void> | void;
-      responseInit: ResponseInit;
-      keepalive: boolean;
-    }>,
+    options?: StreamOptions,
   ): Response {
     const readableStream = new ReadableStream({
       async start(controller) {