emitter symbol for nodejs rejection err eventname args

Stability: 1 - captureRejections is experimental.

• err Error
• eventName {string|symbol}
• ...args {any}

The Symbol.for('nodejs.rejection') method is called in case a promise rejection happens when emitting an event and [captureRejections][capturerejections] is enabled on the emitter. It is possible to use [events.captureRejectionSymbol][rejectionsymbol] in place of Symbol.for('nodejs.rejection').

const { EventEmitter, captureRejectionSymbol } = require('events');
class MyClass extends EventEmitter {
  constructor() {
    super({ captureRejections: true });
  }
  [captureRejectionSymbol](err, event, ...args) {
    console.log('rejection happened for', event, 'with', err, ...args);
    this.destroy(err);
  }
  destroy(err) {
    // Tear the resource down here.
  }
}