relaycore

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

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));

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.

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

await stream.ack(event.id); const pipeline = stream.filter(e => e.amount > 100).map(e => ( ...e, fee: e.amount * 0.03 )).on('error', (err) => logger.error(err));

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.

See also