can't use typescript's `!` in svelte component (outside script)

[Alexandre-Fernandez]

Describe the bug

Svelte doesn't understand ! when it's used outside the script tags.

Reproduction

<script lang="ts">
	let foo: string | undefined = undefined

	function someFunction(param: string) {
		return param
	}

	$: bar = foo
</script>

{#if bar}
	{someFunction(foo!)}
	Unexpected tokensvelte(parse-error)
	Unexpected tokents(-1)
{/if}

Logs

No response

System Info

linux + vscode

Severity

annoyance

[dummdidumm]

This needs #4701 to be implemented, closing in favor of that