Documentation

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

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

const stream = new RelayKit( apiKey: process.env.API_KEY, region: 'us-east-1' );

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

Documentation

Error handling is explicit: catch failures at any stage, log them, and route bad events to a dead-letter queue without stopping the main pipeline.

stream.pipe(map(e => e.data), buffer(100, 5000), flatMap(batch => fetch('/api/bulk',  body: JSON.stringify(batch) ))).catch(console.error);

Graceful shutdown waits for in-flight events to complete, then closes connections cleanly—no lost events, no crashes.