$app/stores

import { 
function getStores(): {
    page: typeof page;
    navigating: typeof navigating;
    updated: typeof updated;
}getStores, const navigating: Readable<Navigation | null>
A readable store.
When navigating starts, its value is a Navigation object with from, to, type and (if type === 'popstate') delta properties.
When navigating finishes, its value reverts to null.
On the server, this store can only be subscribed to during component initialization. In the browser, it can be subscribed to at any time.
navigating, const page: Readable<Page<Record<string, string>, string | null>>
A readable store whose value contains page data.
On the server, this store can only be subscribed to during component initialization. In the browser, it can be subscribed to at any time.
page, 
const updated: Readable<boolean> & {
    check(): Promise<boolean>;
}
A readable store whose initial value is false. If version.pollInterval is a non-zero value, SvelteKit will poll for new versions of the app and update the store value to true when it detects one. updated.check() will force an immediate check, regardless of polling.
On the server, this store can only be subscribed to during component initialization. In the browser, it can be subscribed to at any time.
updated } from '$app/stores';