Example usage:

Initialize

import { Telegram, Slack } from "@apifonica/notifier"

// initialize with authorization access token for telegram bot
const telegram = new Telegram({
  accessToken: '123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11',
})
// initialize with authorization access token for slack app
const slack = new Slack({
  accessToken: 'xoxb-123456789101-1234567891011-ABCDEFghijklmnoPQr1stuvw',
})

How to create and setup bot for Telegram see here https://core.telegram.org/bots/api#authorizing-your-bot.

How to create and setup app for Slack see here https://api.slack.com/authentication/basics.

Send message

// for sending messages to Telegram required options are "chat_id" and "text"
// other options which provide to use Telegram API are optional

const telegramMessage = await telegram.sendMessage({
  chat_id: '-123456789',
  text: 'Hello World',
  parse_mode: 'HTML',
  disable_web_page_preview: true,
})

console.log(`telegramMessage: ${JSON.stringify(telegramMessage)}`)

// for sending messages to Slack required options are "channel" and "text"
// other options which provide to use Slack API are optional

const slackMessage = await slack.postMessage({
  channel: 'ABC12345XYZ',
  text: 'Hello World',
  blocks: [
    {
      type: 'section',
      text: {
        type: 'mrkdwn',
        text: 'Hey, nice to meet you'
      }
    },
  ]
})

console.log(`slackMessage: ${JSON.stringify(slackMessage)}`)