<pre class="shiki github-dark shaku"><code>// please complete the implementationclass EventEmitter { events = {} subscribe(eventName, callback) { 	if(this.events[eventName]) this.events[eventName].push(callback) else this.events[eventName] = [callback] return { release: () =&gt; { console.log(this.events) for(let i=0;i&lt;this.events[eventName].length;i++){ if(this.events[eventName][i] === callback){ this.events[eventName].splice(i,1); } } } } } emit(eventName, ...args) { if(!this.events[eventName]) return 	for(let func of this.events[eventName]){ func.call(this,...args) } }}</code></pre>

Utilizing Closures

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There is Event Emitter in Node.js, Facebook once had its own implementation but now it is archived. You are asked to create an Event Emitter Class con…