<pre class="shiki github-dark shaku"><code>// please complete the implementationclass EventEmitter { constructor () { this.subscribers = new Map() } subscribe(eventName, callback) { const id = Symbol("id"); 	if(this.subscribers.has(eventName)) { this.subscribers.get(eventName).push({id, callback}) } else { this.subscribers.set(eventName, [{id, callback}]) } return { release: () =&gt; { const filtered = this.subscribers?.get(eventName).filter((item) =&gt; item.id !== id) this.subscribers?.set(eventName, filtered) } } } emit(eventName, ...args) { 	this.subscribers.get(eventName)?.forEach((cb) =&gt; { cb.callback(...args) }); }}</code></pre>

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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…