[kai-at-momos]

Summary

Adds the optional broadcast_delete argument to ChatDeleteArguments.

chat.delete with broadcast_delete: true on a thread reply that was also sent to the channel (subtype: thread_broadcast) removes it from the channel only. The reply stays in its thread with the same ts. This is what the Slack client sends for "Remove from channel", and it works with a bot token too.

It is the only way to reverse reply_broadcast. chat.update with reply_broadcast: false returns ok: true and changes nothing.

Verified against the live API with a bot token:

1. chat.postMessage with thread_ts + reply_broadcast: true -> thread_broadcast in conversations.history
2. chat.delete with broadcast_delete: true -> ok: true
3. the message is gone from conversations.history and still in conversations.replies with the same ts, now a plain reply

The argument is not on the chat.delete reference page yet, so the JSDoc describes the observed behaviour.

Changes:

• packages/web-api/src/types/request/chat.ts: broadcast_delete?: boolean on ChatDeleteArguments
• packages/web-api/test/types/methods/chat.test-d.ts: happy-path type test
• changeset: @slack/web-api patch

tsd reports 6 errors on main before and after this change (files.upload, rtm.start), none in chat.

Related: #2815

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[salesforce-cla]

Thanks for the contribution! Before we can merge this, we need @kai-at-momos to sign the Salesforce Inc. Contributor License Agreement.

[changeset-bot]

🦋 Changeset detected

Latest commit: a045a6f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@slack/web-api	Patch

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