1const EventEmitter = require('events');
2
3class MyEmitter extends EventEmitter {
4  foo() {
5    this.emit('test');
6  }
7}
8const myEmitter = new MyEmitter();
9myEmitter.on('test', () => console.log('Yay, it works!'));
10
11myEmitter.foo();	// Yay it works!

1const { EventEmitter } = require('eventemitter3')
2const util = require('util')
3const zlib = require('zlib')
4
5/**
6 * @description Create owner custom costructor for inhertitance event emitter data
7 */
8function DataDriven() {
9	EventEmitter.call(this)
10}
11
12/**
13 * @description Inheritance all event core method to DataDriven Function
14 */
15util.inherits(DataDriven, EventEmitter)
16
17DataDriven.prototype.pub = function (eventName, data) {
18	const compress = zlib.brotliCompressSync(JSON.stringify({ data }), {
19		chunkSize: 999999999,
20		maxOutputLength: 999999999
21	})
22
23	const decompress = zlib.brotliDecompressSync(compress, {
24		chunkSize: 999999999,
25		maxOutputLength: 999999999
26	})
27
28	this.emit(eventName, decompress.toString('utf-8'))
29}
30
31DataDriven.prototype.sub = function (eventName, callback) {
32	this.on(eventName, function (data) {
33		callback(JSON.parse(data).data)
34	})
35}
36
37const dataDriven = new DataDriven()
38
39exports.event = {
40	pub(eventName, data) {
41		dataDriven.pub(eventName, data)
42	},
43	sub(eventName) {
44		return new Promise(function (resolve, reject) {
45			dataDriven.sub(eventName, (res) => resolve(res))
46		})
47	}
48}