ViewSubmitAction type missing trigger_id

[SpencerKaiser]

Description

On view submission, the body element of the response includes a trigger_id value which can be used to perform additional actions. The ViewSubmitAction type does not include trigger_id so when handling the event, body does not include this value.

What type of issue is this? (place an x in one of the [ ])

• bug
• enhancement (feature request)
• question
• documentation related
• testing related
• discussion

Requirements (place an x in each of the [ ])

• 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.
• I've searched for any related issues and avoided creating a duplicate issue.

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Bug Report

body is missing from within ViewSubmitAction

Reproducible in:

package version: 2.0.1

node version: 12.12.0

OS version(s): macOS 10.15.6

Steps to reproduce:

1. Handle a view submission event with a listener and try to access trigger_id within body

export const someViewSubmission: Middleware<SlackViewMiddlewareArgs<ViewSubmitAction>> = async ({ ack, body }) => {
  ack();
  const { trigger_id } = (body as unknown) as { [id: string]: string };
  console.log(trigger_id); // trigger_id is defined

  // Property 'trigger_id' does not exist on type 'ViewSubmitAction'.ts(2339)
  // const { trigger_id } = body;
}

Expected result:

No type error, trigger_id is accessible

Actual result:

Type error but value is accessible when asserting as another type

Workaround

Included in snippet above, just assert as unknown then as a string: string dictionary

[SpencerKaiser]

@aoberoi I never know if these are bolt or @slack/types related. Let me know if this is better on that project, but I think this is a bolt-specific one.