weseek__growi/packages/slack/src/interfaces/request-from-slack.ts

import { Request } from 'express';

export type RequestFromSlack = Request & {
  // appended by slack
  headers:{'x-slack-signature'?:string, 'x-slack-request-timestamp':number},

  // appended by GROWI or slackbot-proxy
  slackSigningSecret?:string,
};