Client

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.

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

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));

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

Client

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

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

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.