False positives for legacy syntax reactive comma-separated statement

[sirkostya009]

Describe the bug

Running svelte-check with --incremental or --tsgo prints errors for comma-separated reactive statements ($:) that have a custom store or a reactive value (or a prop) in it.

Reproduction

Run svelte-check in a codebase with a component like:

<script lang="ts">
	import { page } from "$app/stores";
	import { onMount } from "svelte";
	import { writable } from "svelte/store";

	export let prop: string;

	let button: HTMLButtonElement;

	let count = 0;
	let store = writable(0);

	$: button, prop, count, console.log("button:", button);
	$: $page.form, count, console.log("count:", count); // weirdly enough doesnt report when i have $page
</script>

<button onclick={() => count++} bind:this={button}>button</button>

Expected behaviour

No errors are returned

System Info

• OS: Linux
• IDE: VSCode

Which package is the issue about?

svelte-check

[jasonlyu123]

This is a limitation with the current tsgo CLI wrapper approach. Most likely won't be fixed until there is a proper API for tsgo.