Changelog

Each event flows through a series of transformation stages, with built-in support for filtering, mapping, and conditional routing.

The TypeScript types are fully inferred; no manual type assertions needed even with complex nested schemas.

const batch = stream.pipe(filter((e) => e.type === 'payment'), batch(100), debounce(5000));

The core querykit object is a lightweight wrapper that manages the lifecycle of your event stream.

Changelog

Batching is automatic—control it via `batch(100)` or `batch({ size: 50, timeoutMs: 1000 })` to trade latency for throughput.

const batch = stream.pipe(filter((e) => e.type === 'payment'), batch(100), debounce(5000));

Metrics are published to standard formats (Prometheus, CloudWatch, DataDog) with zero configuration.