slack-strategy.js

const slack = require('slack')
 
const SlackStrategy = {
    send: function(receiptHtml, userEmail) {
        const user = getUserFromEmail(userEmail);
        const slackMessageBody = getSlackMessageBody(receiptHtml, userEmail);
        slack.chat.postEphemeral({ token, channel, slackMessageBody, user })
    }
}