Svelte 5 migrate function doesn't preserve JSDoc annotation for props

[FireMakeThunder]

Describe the bug

When migrating a component from Svelte 4 to 5, JSDoc annotations that were above the export let props aren't found in interface Props.

Before

<script lang="ts">
	/** Total clicks */
	export let count = 0;

	/** Background color for button */
	export let backgroundColor = 'blue';
	
	/** Binding to button element */
	export let button: HTMLButtonElement
	
	/** Dispatches click to button element */
	export function dispatchClick() {
		button.dispatchEvent(new MouseEvent('click'));
	}
</script>

<button on:click={() => count++} style="background-color: {backgroundColor}" bind:this={button}>
	clicks: {count}
</button>

After

<script lang="ts">
	/** Total clicks */

	/** Background color for button */
	
	/** Binding to button element */
	interface Props { count?: number, backgroundColor?: string, button: HTMLButtonElement }

	let { count = $bindable(0), backgroundColor = 'blue', button = $bindable() }: Props = $props();
	
	/** Dispatches click to button element */
	export function dispatchClick() {
		button.dispatchEvent(new MouseEvent('click'));
	}
</script>

<button onclick={() => count++} style="background-color: {backgroundColor}" bind:this={button}>
	clicks: {count}
</button>

Expected

<script lang="ts">
	interface Props { 
		/** Total clicks */
		count?: number,
		/** Background color for button */
		backgroundColor?: string,
		/** Binding to button element */
		button: HTMLButtonElement
	}

	let { count = $bindable(0), backgroundColor = 'blue', button = $bindable() }: Props = $props();
	
	/** Dispatches click to button element */
	export function dispatchClick() {
		button.dispatchEvent(new MouseEvent('click'));
	}
</script>

<button onclick={() => count++} style="background-color: {backgroundColor}" bind:this={button}>
	clicks: {count}
</button>

Reproduction

Link to Svelte 5 Repro - Click MIGRATE

Logs

No response

System Info

Using svelte 5 preview MIGRATE feature

Severity

annoyance