List Channels

import { WebClient } from "@slack/web-api"

/**

 * List Channels

 * List conversations by type — comma-separated public_channel, private_channel, mpim, im (default public_channel). Page with `cursor` = the previous `response_metadata.next_cursor`. Needs channels:read; private channels need groups:read, DMs im:read and group DMs mpim:read (user-token defaults; for a bot token tick them in the connect dialog). A bot sees only private channels and DMs it is in.

 */

export async function main(

  auth: RT.Slack,

  types?: string,

  exclude_archived?: boolean,

  limit?: number,

  cursor?: string

) {

  const client = new WebClient(auth.token)

  return await client.conversations.list(

    dropEmpty({ types, exclude_archived, limit, cursor })

  )

}

function dropEmpty<T extends { [key: string]: any }>(params: T) {

  return Object.fromEntries(

    Object.entries(params).filter(

      ([, v]) => v != null && v !== "" && !(Array.isArray(v) && v.length === 0)

    )

  ) as T

}