From 39a7f08ead3057bbe5a84a22a8b9612441b9f18d Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Tue, 8 Jul 2025 10:20:49 -0400
Subject: [PATCH] tidy

---
 .../svelte/src/internal/client/reactivity/deriveds.js    | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/packages/svelte/src/internal/client/reactivity/deriveds.js b/packages/svelte/src/internal/client/reactivity/deriveds.js
index aece8f427c..58a22194d7 100644
--- a/packages/svelte/src/internal/client/reactivity/deriveds.js
+++ b/packages/svelte/src/internal/client/reactivity/deriveds.js
@@ -124,13 +124,8 @@ export function async_derived(fn, location) {
 
 		if (DEV) current_async_effect = null;
 
-		promise =
-			prev === null
-				? Promise.resolve(p)
-				: prev.then(
-						() => p,
-						() => p
-					);
+		var r = () => p;
+		promise = prev?.then(r, r) ?? Promise.resolve(p);
 
 		prev = promise;