Svelte for VS Code is inserting 2 spaces at document formating, instead tab (with size 4), as is set in VS Code.

[Mlocik97]

To Reproduce
Steps to reproduce the behavior:
install Svelte for VS Code
npx degit svelte/sapper-template#rollup
open for example _error.svelte
set "intend using tab size 4" and convert
ctrl+shift+i -> get two spaces.

<svelte:head>
  <title>{status}</title>
</svelte:head>

<h1>{status}</h1>

<p>{error.message}</p>

{#if dev && error.stack}
  <pre>{error.stack}</pre>
{/if}

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

System (please complete the following information):

• OS: Ubuntu 20.04
• IDE: VS Code
• Plugin/Package: [Svelte for Code]

[dummdidumm]

Formatting is done with Prettier, but we do not fall back to the user settings if there is no prettier config. We should do something similar to the Prettier VSCode Plugin. For anyone interested in implementing this: Here is where you would start and enhance the config with fallback logic similar to how Prettier VSCode does it We are already doing this

[dummdidumm]

You will not be able to indent on a per-file level, so doing the indentation like that will not work even after we fix the settings bug. But the indentation in your user settings ("Tab Size") should be adhered to after the fix.

[dummdidumm]

Looks like we can use the FormattingOptions parameter of the LSP request to get the desired behavior - but we will only use it if no prettier config is found. I'll also have to check with the other maintainers if this is a change we want to make, because it's a breaking change.