💡 Turns out it's quite simple to write. Not very performant, but will do for now. import { matchFilter, type Event, type Filter } from "nostr-tools" export class MemStore { events: Event[] constructor() { this.events = [] } add(event: Event) { this.events.push(event) } req(filtr: Filter): Event[] { let r: Event[] = [] this.events.forEach(e => { if (matchFilter(filtr, e)) { r.push(e) } }) return r } }