async prepended to <script> html tag when using vscode quick fix

[CuriousCodingCanadian]

Describe the bug

When using Svelte for VS Code, if you use await in a non-async non-function context outside the top level (i.e. for loop, if statement, block), and use the Quick Fix "Add async modifier to containing function", the script tag will be changed from <script ...> to <async script ...>.

Reproduction

Write the following code in a Svelte file:

<script lang="ts">
console.log("top level");
{
    await new Promise((resolve) => setTimeout(resolve, 1));
}
</script>

The await keyword will be underlined with a red squiggly line. Hover over it, select "Quick fix", then "Add async modifier to containing function".

The containing script tag will be replaced with <async script lang="ts">.

Expected behaviour

Either do not show the option to add async modifier to containing function in this context, or wrap the current context in a function or IIFE.

System Info

• OS: Arch Linux
• IDE: VSCode

Which package is the issue about?

Svelte for VS Code extension

Additional Information, eg. Screenshots