kafka-ts/dist/types.d.ts

**KafkaTS** is a Apache Kafka client library for Node.js. It provides both a low-level API for communicating directly with the Apache Kafka cluster and high-level APIs for publishing and subscribing to Kafka topics.

export type Message = {
    topic: string;
    partition?: number;
    offset?: bigint;
    timestamp?: bigint;
    key?: string | null;
    value: string | null;
    headers?: Record<string, string>;
};
export type Batch = Required<Message>[];