👋 Svelte maintainer here. Can you elaborate on the "svelte5 rendering slow specifically on storybook due to deep_read" part? Where can I see that in this PR?

👋 Svelte maintainer here. Can you elaborate on the "svelte5 rendering slow specifically on storybook due to deep_read" part? Where can I see that in this PR?

@dummdidumm

Oh hello, didn't expect to comment. I tried to change the props of a svelte component in storybook and it was getting laggy and when I profiled it, deep_read was getting most of the blocking.

If I remember correctly, Storybook's svelte 5 implementation was unfinished at the time. It may be changed So I'll have to recheck again.

Just in case, here's the screenshot and profiler url.

https://share.firefox.dev/3UQ5O1H

Edit: Issue still persists on version bump, i hope to guess the lack of svelte5 dedicated support from storybook's svelte renderer.

https://share.firefox.dev/4aeah2K