method EventEmitter.eventNames
Usage in Deno
```typescript import { type EventEmitter } from "node:node__events.d.ts"; ```
EventEmitter.eventNames(): Array<(string | symbol) & Key2<unknown, T>>
Returns an array listing the events for which the emitter has registered
listeners. The values in the array are strings or `Symbol`s.
```js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.on('foo', () => {});
myEE.on('bar', () => {});
const sym = Symbol('symbol');
myEE.on(sym, () => {});
console.log(myEE.eventNames());
// Prints: [ 'foo', 'bar', Symbol(symbol) ]
```
Array<(string | symbol) & Key2<unknown, T>>