<pre use:myaction></pre> crashes

[ocavue]

Describe the bug

After updating svelte from v5.16.5 to v5.16.6 (or the latest v5.17.3), the following code doesn't work anymore:

<script lang="ts">
  import type { Action } from "svelte/action";

  const myaction: Action = (element) => {
    $effect(() => {
      let code = document.createElement("code");
      code.textContent = "Hello world";
      element.appendChild(code);
    });
  };
</script>

<div>
  <pre use:myaction></pre>
</div>

There is the error:

[vite-plugin-svelte] [plugin vite-plugin-svelte] Cannot read properties of undefined (reading 'type')
file: /private/tmp/test-sv2/svelte-pre-issue/src/routes/mypre.svelte
TypeError: [plugin vite-plugin-svelte] Cannot read properties of undefined (reading 'type')

It seems that #14922 causes this issue.

Reproduction

1. Open https://stackblitz.com/github/issueset/svelte-pre-action-issue, and you will see the following error

   [plugin:vite-plugin-svelte] Cannot read properties of undefined (reading 'type')
   

2. Downgrade the svelte version in package.json to 5.16.5, then everything works fine.

Logs

No response

System Info

System:
    OS: macOS 15.1.1
    CPU: (8) arm64 Apple M2
    Memory: 280.28 MB / 24.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.18.1 - /opt/homebrew/opt/node@20/bin/node
    npm: 10.8.2 - /opt/homebrew/opt/node@20/bin/npm
    pnpm: 9.15.3 - /opt/homebrew/opt/node@20/bin/pnpm
    bun: 1.1.26 - /opt/homebrew/bin/bun
  Browsers:
    Brave Browser: 122.1.63.169
    Chrome: 131.0.6778.265
    Chrome Canary: 134.0.6947.0
    Safari: 18.1.1
    Safari Technology Preview: 18.2
  npmPackages:
    svelte: 5.16.6 => 5.16.6

Severity

blocking an upgrade