Support for passing a function to terminateVisibilityTimeout

[lucleray]

Allow to pass a function to terminateVisibilityTimeout

It allows to easily add a retry strategy with exponential backoff and/or jitter.

For example:

consumer = new Consumer({
  [...]
  terminateVisibilityTimeout: (message: SQSMessage) => {
    const retryCount = Number.parseInt(message.Attributes?.ApproximateReceiveCount) || 1;
    return 
      5 ** retryCount  + // exponential backoff
      Math.random() * 60; // jitter
  }
});