Deno Workspace Not Functioning in .svelte Files

project/
├─ frontend/
│  ├─ deno.json
│  ├─ src/
│  │  ├─ routes/
│  │  │  ├─ +page.svelte
│  │  │  ├─ sample.ts
│  ├─ package.json
├─ backend/
│  ├─ main.ts
│  ├─ deno.json
├─ deno.json

{
  "workspace": ["./frontend", "./backend"]
}

export function sayHi() {
  console.log("Hi");
}

{
  name: "@scope/backend",
  version: "0.0.1"
}

<script lang="ts">
import { sayHi } from "@scope/backend";
</script>

'sayHi' is declared but its value is never read.
Cannot find module '@scope/backend' or its corresponding type declarations.

import { sayHi } from "@scope/backend"; // This imports correctly