@jill64/svelte-device-theme/dist/index.svelte.js

☯ A simple store that syncs with your device's theme settings

import { listen } from 'svelte-mq-store';
let isDark = $derived(listen('(prefers-color-scheme: dark)'));
export const is = {
    get dark() {
        return isDark.v;
    },
    get light() {
        return !isDark.v;
    }
};