String content erased when inferring slot/event type from props

The following Svelte code fails to check with svelte-check v2.2.3.

<!-- Component.svelte -->
<script lang="typescript">
  export let variant: "foo" | "bar"
  export let style: string
</script>

<!-- index.svelte -->
<script lang="typescript">
  import Component from "./Component.svelte";
</script>

<Component
  variant="foo"
  style={`${
    1
  }`}
  on:click={() => {}}
/>

It shows the error

Error: Type '""' is not assignable to type '"foo" | "bar"'. (ts)
  on:click={() => {}}
/>

The example looks artificial but this layout is produced by prettier if the expression inside ${} is long.

[dummdidumm]

The multiline problem is fixed now.

[jasonlyu123]

The empty string part is released. You can try it again. I’ll leave this open for the multi-line problem.