sendBatch - Message cannot be undefined

ra · 2025-07-17T15:43:23.033Z

Hey all, I'm having a major issue with the sendBatch API. It's consistently throwing an error `Message body cannot be undefined` . But I log out the array and there are no undefined objects in the array 🧵

R

raOP•7/17/25, 3:50 PM

These payload items seem to work fine when I use

send

send

send

send insetad of

sendBatch

sendBatch

sendBatch

sendBatch (until I hit the API request limit)

R

raOP•7/17/25, 4:06 PM

I also tried reducing my batch size to 4 as well, and didn't have any luck (same issue)

R

raOP•7/17/25, 4:11 PM

Can share code snippets or anything else that may help, but the logic is pretty trivial. I think it's payload related.

R

raOP•7/17/25, 4:37 PM

I think I found the issue, the API is just kind of unintuitive:

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<MessageSendRequest<Body>>, options?: QueueSendBatchOptions): Promise<void>;
}

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<MessageSendRequest<Body>>, options?: QueueSendBatchOptions): Promise<void>;
}

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<MessageSendRequest<Body>>, options?: QueueSendBatchOptions): Promise<void>;
}

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<MessageSendRequest<Body>>, options?: QueueSendBatchOptions): Promise<void>;
}

I would have expected this to be:

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<Body>, options?: QueueSendBatchOptions): Promise<void>;
}

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<Body>, options?: QueueSendBatchOptions): Promise<void>;
}

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<Body>, options?: QueueSendBatchOptions): Promise<void>;
}

interface Queue<Body = unknown> {
  send(body: Body, options?: QueueSendOptions): Promise<void>;
  sendBatch(messages: Iterable<Body>, options?: QueueSendBatchOptions): Promise<void>;
}

sendBatch - Message cannot be undefined

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