[BUG] Scheduled Messages list issues with slack cli app

[mateopozor02]

The deno-slack versions

"deno-slack-sdk/": "https://deno.land/x/deno_slack_sdk@2.15.0/",
"deno-slack-api/": "https://deno.land/x/deno_slack_api@2.8.0/",

Deno runtime version

deno 1.46.2 (stable, release, x86_64-unknown-linux-gnu)
v8 12.9.202.5-rusty
typescript 5.5.2

OS info

#25~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 15 17:20:50 UTC 2

Describe the bug

When developing a Slack app using the Slack CLI, the client.chat.scheduledMessages.list method appears to silently fail inside Slack Functions. It returns a successful response, but the scheduled_messages list is empty—even immediately after a successful client.chat.scheduleMessage call for the same channel.

Steps to reproduce

1. Run your project with slack run
2. Trigger a function that schedules a message to a channel (client.chat.scheduleMessage)
3. Get a successful API response for scheduling
4. In the same function, call client.chat.ScheduledMessages.list for the same channel
5. Get successful response but an empty list of scheduled messages

Minimal fuction to try this:

async function testScheduledMessages(
  params: ChatScheduleMessageParams,
  client: SlackAPIClient,
) {
  // Trying to send a plaintext in the params 
  const plaintextPost = await client.chat.scheduleMessage({
    channel: params.channel,
    text: "THIS IS A TEST SCHEDULED MESSAGE",
    post_at: params.post_at,
  });

  console.log("Plaintext Post Response:", plaintextPost);

  // Show the scheduled message list 
  const scheduledMessages = await client.chat.scheduledMessages.list({
    channel: params.channel,
  });

  console.log("List of Scheduled Messages:", scheduledMessages);
}

Expected result

After successfully scheduling the message and calling client.chat.scheduledMessages.list, it should be shown in the list of scheduled messages from the response.

Actual result

After successfully scheduling the message, the result of client.chat.scheduleMessages.list is successful, but the list is empty.

Requirements

Please read the Contributing guidelines and Code of Conduct before creating this issue or pull request. By submitting, you are agreeing to those rules.

[cchensh]

Hello @mateopozor02 ,

From what I found in the logs everything looks fine but I did notice that the request to chat.scheduledMessages.list happened the same time as the message is created which might be related to the race condition that the actual message object hasn't been insert into the table. Would you mind setting timeout before sending the request to chat.scheduledMessages.list and see if that address the issue?

[mateopozor02]

Hey @cchensh! I tried adding the timeout, but the result is the same. The message is still not appearing when calling chat.scheduledMessages.list.

[cchensh]

Sorry to hear that @mateopozor02 , I will escalate to the team of that API and see if anything they find