npm / @slack/types

@slack/types

What changed in @slack/types 2 to 3, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-20.

10 breaking18 new APIs and options1 behavior and defaults1 tooling1 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

@slack/types 313 changes

Support for fetchOrgInstallation in the Installation Store was dropped; handle organization-wide installation lookups through fetchInstallation instead.
3.0.0upgrade guide
The minimum required Node version is 12.13.0.
3.0.0upgrade guide
The minimum required npm version is 6.12.0.
3.0.0upgrade guide
The minimum required TypeScript version is 4.1.
3.0.0upgrade guide
Node.js 18 is no longer supported; the minimum supported Node.js version is now 20.
3.0.0release notes
Support for orgAuthorize was dropped; use authorize for both single-workspace and organization-wide installations.
3.0.0upgrade guide
Support for storeOrgInstallation in the Installation Store was dropped; handle organization-wide installation storage through storeInstallation instead.
3.0.0upgrade guide

Adds the event type for users stopping an agent session.
3.1.0release notes
Adds the event type for an agent session title changing.
3.1.0release notes
Adds the optional max_lines property to the RichTextInput element.
3.1.0release notes
Adds the optional min_lines property to the RichTextInput element.
3.1.0release notes
Use authorize for both single-workspace and organization-wide installations, checking isEnterpriseInstall to determine which installation details to fetch.
3.0.0upgrade guide

HTTPReceiver replaces ExpressReceiver as the default receiver, enabling apps to work with other popular web frameworks; custom routes still require ExpressReceiver.
3.0.0upgrade guide

The authenticated public client property was removed. Use isActive() to determine whether the WebSocket connection powering the client is healthy.
2.0.0upgrade guide
The connected public client property was removed. Use isActive() to determine whether the WebSocket connection powering the client is healthy.
2.0.0upgrade guide
Use isActive() to determine whether the WebSocket connection powering the client is healthy, instead of the removed connected and authenticated client properties.
2.0.0upgrade guide

Adds a type for passing Block Kit blocks within streaming messages.
2.21.1release notes
Adds the Alert block type so developers can represent alert blocks in @slack/types.
2.21.0release notes
Adds the Card block type so developers can represent card blocks in @slack/types.
2.21.0release notes
Adds the Carousel block type so developers can represent carousel blocks in @slack/types.
2.21.0release notes
Adds the MarkdownTextChunk type for streaming.
2.20.0release notes
Adds the PlanBlock type for displaying task progress in messages.
2.20.0release notes
Adds the PlanUpdateChunk type for streaming.
2.20.0release notes
Adds the TaskCard type for displaying task progress in messages.
2.20.0release notes
Adds the TaskUpdateChunk type for streaming.
2.20.0release notes
Adds the UrlSourceElements type for displaying sources within task cards.
2.20.0release notes
A table block type was added.
2.19.0release notes
The rich text section block element types now include underline.
2.19.0release notes
Added support for work objects in @slack/types, allowing developers to use types for this feature.
2.18.0release notes