make params optional

Author: s1gr1d

packages/core/src/utils/flushIfServerless.ts

@@ -37,7 +37,7 @@ async function flushWithTimeout(timeout: number): Promise<void> {
 export async function flushIfServerless(
   params: // eslint-disable-next-line @typescript-eslint/no-explicit-any
   | { timeout?: number; cloudflareWaitUntil?: (task: Promise<any>) => void }
-    | { timeout?: number; cloudflareCtx?: MinimalCloudflareContext },
+    | { timeout?: number; cloudflareCtx?: MinimalCloudflareContext } = {},
 ): Promise<void> {
   const { timeout = 2000 } = params;