svelte-slash-signals (svelte/signals) is copy of the svelte/store API using the new svelte 5 $state signals instead of the publish/subscribe pattern.
So this:
import { writable } from 'svelte/store';
const store = writable(5);
$store; // 5
Becomes:
import { writable } from 'svelte-slash-signals';
const store = writable(5);
store.value; // 5