💃 Getting Started

This package is available in the Node Package Repository and can be easily installed with npm or yarn.

$ npm i @jolly-pixel/event-store
# or
$ yarn add @jolly-pixel/event-store

👀 Usage example

import * as EventStore from "@jolly-pixel/event-store";

const store = EventStore.persistence.memory();

store.writer.append({
  assetType: "pixelart",
  assetId: "<UUID>",
  eventType: "pixelart.command",
  eventData: {
    action: "uv-region-moved",
    metadata: {},
    clientId: "533454a2-4f09-47c5-8e24-dc5d479c578e",
    timestamp: 1788814248122
  },
  actor: {
    type: "user",
    id: "533454a2-4f09-47c5-8e24-dc5d479c578e"
  }
}).unwrap();

const events = store.reader.list("<UUID>");
console.log(events);

📚 API

All backends expose the same EventStore API.

📦 Persistence

Each factory returns a writer and a reader sharing the same storage, plus lifecycle close().

import * as EventStore from "@jolly-pixel/event-store";

EventStore.persistence.memory();
await EventStore.persistence.sqlite();

• Memory: in-process storage
• Sqlite: durable Node.js storage

[!NOTE] The package entrypoint is safe to import from browser code. persistence.sqlite loads its Node-only backend when called.

📈 Benchmarks

$ npm run bench -w @jolly-pixel/event-store
$ npm run bench -w @jolly-pixel/event-store -- read

Suites live in bench/ and run on the shared @jolly-pixel/bench harness. They cover append, the reader, listFromCheckpoints against listAll, and compact, over three backends: memory, sqlite:memory and sqlite:file.

✨ Contributors guide

If you are a developer looking to contribute to the project, you must first read the CONTRIBUTING guide.

Run these commands from the monorepo root:

$ npm run test -w @jolly-pixel/event-store
$ npm run lint

[!CAUTION] In case you introduce a new feature or fix a bug, make sure to include tests for it as well.

📃 License

MIT