npm install @signaldb/preact @signaldb/core @preact/signals-coreimport { Collection } from '@signaldb/core';import preactReactivityAdapter from '@signaldb/preact';import { effect } from '@preact/signals-core'; const posts = new Collection({ reactivity: preactReactivityAdapter,}); effect(() => { const cursor = posts.find({ author: 'John' }); console.log(cursor.count()); return () => { cursor.cleanup(); };});