immich/web/src/lib/stores/download.ts

import { writable, derived } from 'svelte/store';

export const downloadAssets = writable<Record<string, number>>({});

export const isDownloading = derived(downloadAssets, ($downloadAssets) => {
	if (Object.keys($downloadAssets).length == 0) {
		return false;
	}

	return true;
});