From 8cae69b5647f4039607c2473c521adcebd8eb2bf Mon Sep 17 00:00:00 2001 From: Simon Holthausen Date: Tue, 26 Aug 2025 16:49:54 +0200 Subject: [PATCH] revert --- packages/svelte/src/legacy/legacy-client.js | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/packages/svelte/src/legacy/legacy-client.js b/packages/svelte/src/legacy/legacy-client.js index 79916bd3c1..d4a053d1aa 100644 --- a/packages/svelte/src/legacy/legacy-client.js +++ b/packages/svelte/src/legacy/legacy-client.js @@ -11,6 +11,7 @@ import * as w from '../internal/client/warnings.js'; import { DEV } from 'esm-env'; import { FILENAME } from '../constants.js'; import { component_context, dev_current_component_function } from '../internal/client/context.js'; +import { async_mode_flag } from '../internal/flags/index.js'; /** * Takes the same options as a Svelte 4 component and the component function and returns a Svelte 4 compatible component. @@ -120,8 +121,9 @@ class Svelte4Component { recover: options.recover }); - // We don't flushSync for custom element wrappers or if the user doesn't want it - if (!options?.props?.$$host || options.sync === false) { + // We don't flushSync for custom element wrappers or if the user doesn't want it, + // or if we're in async mode since `flushSync()` will fail + if (!async_mode_flag && (!options?.props?.$$host || options.sync === false)) { flushSync(); }