[BUG] Deno/Fresh: Invalid type passed to createElement(): [object Object]

[crummy]

Describe the bug

When React Virtuoso is used in a Fresh project (Deno's web framework), the following error appears during render:

Invalid type passed to createElement(): [object Object]

To Reproduce

1. Install Deno
2. Run deno run -A -r https://fresh.deno.dev to create a Fresh project.
   • Skip styling and skip VS code setup.
3. Edit islands/Counter.tsx and the following line in the div: <Virtuoso style={{ height: '400px' }} totalCount={200} itemContent={index => <div>Item {index}</div>} />
4. Run deno task start
5. The web browser and console both report this error:

   An error occurred during route handling or page rendering.
   Error: Invalid type passed to createElement(): [object Object]
   at a.__b (https://esm.sh/stable/preact@10.22.0/denonext/debug.js:23:9)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:2611)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:2543)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:5050)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:3802)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:2543)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:3802)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:2543)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:5050)
   at m (https://esm.sh/v135/preact-render-to-string@6.3.1/X-ZS8q/denonext/preact-render-to-string.mjs:2:5050)

Expected behavior

The standard Fresh project appears, with a Virtuoso component.

Desktop (please complete the following information):

• OS: MacOS 14.7
• Browser: Chrome 130
• Deno 2.0.0
• Dependency versions:

   "$fresh/": "https://deno.land/x/fresh@1.7.3/",
  "$std/": "https://deno.land/std@0.216.0/",
  "@preact/signals": "https://esm.sh/*@preact/signals@1.2.2",
  "@preact/signals-core": "https://esm.sh/*@preact/signals-core@1.5.1",
  "preact": "https://esm.sh/preact@10.22.0",
  "preact/": "https://esm.sh/preact@10.22.0/",
  "react-virtuoso": "npm:react-virtuoso@^4.12.0"

Additional context

I know this might be a low-priority fix (maybe this bug should be against Fresh or Deno instead?) but wanted to get this documented in case someone else runs up against this in future.

[petyosi]

Looking at the stack trace, my guess would be something related to Preact itself. I don't believe Deno can affect the client-side. You can try to bring this to the Preact repo I guess. Happy to accept a PR.

I'm closing this as it's extremely unlikely for me to engage with it, and I don't want to pile up open stuff.