I need a simple JS nostr in-memory event store. Filters should be supported. e.g. events = eventstore.req({kinds: [1,6], authors: [pubkey1, pubkey2]})
window.nostrdb is good, but I want it to work in nodejs.
nostrify/NSet is good, but I need it to understand the filter API.
There is a test relay, in-memory (dunno the name), but it listens on a port, I don't need that.
Any ideas?
I am kind of clueless where I should seek such information, but that's a story for another day.
If you use `ndk` there are different store options:
LRU -> https://nostr-dev-kit.github.io/ndk/cache/memory.html
SQLite/WASM -> https://nostr-dev-kit.github.io/ndk/cache/sqlite-wasm/INDEX.html]
Local Relay -> https://nostr-dev-kit.github.io/ndk/cache/nostr.html
Thanks for it!
I am developing a library (https://www.npmjs.com/package/nostr-tribes) with the least amount of dependencies. It already depends on nostr-tools (this is its only dependency), and it is not the right time to add a new 8.7megs dependency to ndk (memory cache adapter depends on ndk main package).
In my mind this module should be more like a package that others depend on, instead of a package that depends on code that supports cashu, nutzaps, nip5 and so on.
Like your asknostr.site though! Great initiative, might answer my 2nd question :)
💡 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
}
}
