slack.js

/**
* Handles the actual sending request. 
* We're turning the https.request into a promise here for convenience
* usage: sendSlackMessage( yourWebHookURL, slackSuccess('message title') );
* @param webhookURL
* @param messageBody
* @return {Promise}
*/
function sendSlackMessage(webhookURL, messageBody) {
	// make sure the incoming message body can be parsed into valid JSON
	try {
		messageBody = JSON.stringify(messageBody);
	} catch (e) {
		throw new Error('Failed to stringify messageBody', e);
	}

	// Promisify the https.request
	return new Promise((resolve, reject) => {
		// general request options, we defined that it's a POST request and content is JSON
		const requestOptions = {
			method: 'POST',
			header: {
				'Content-Type': 'application/json'
			}
		};

		// actual request
		const req = https.request(webhookURL, requestOptions, (res) => {
			let response = '';


			res.on('data', (d) => {
				response += d;
			});

			// response finished, resolve the promise with data
			res.on('end', () => {
				resolve(response);
			})
		});

		// there was an error, reject the promise
		req.on('error', (e) => {
			reject(e);
		});

		// send our message body (was parsed to JSON beforehand)
		req.write(messageBody);
		req.end();
	});
}

const yourWebHookURL = 'https://acht-s.slack.com/'; // PUT YOUR WEBHOOK URL HERE
const slackSuccess = text => ({
	'username': 'ASLP SERVER:', // This will appear as user name who posts the message
	text, // text
	'icon_emoji': ':bangbang:', // User icon, you can also use custom icons here
	'attachments': [{ // this defines the attachment block, allows for better layout usage
		'color': '#2eb886', //'#eed140', // color of the attachments sidebar.
		'fields': [ // actual fields
			{
				'title': 'Environment', // Custom field
				'value': 'Production', // Custom value
				'short': true // long fields will be full width
			},
			{
				'title': 'User ID',
				'value': '331',
				'short': true
			}
		],
		"actions": [ // Slack supports many kind of different types, we'll use buttons here
			{
				"type": "button",
				"style": "primary", // primary | danger | undefined
				"text": "Show log", // text on the button 
				"url": "https://aslpbuild.8s.de" // url the button will take the user if clicked
			}
		]
	}]
});