events.setMaxListeners(n[, ...eventTargets])

• n <number> 非负的数值。 每个 EventTarget 事件的最大监听器数。
• ...eventsTargets <EventTarget[]> | <EventEmitter[]> 零个或多个 <EventTarget> 或 <EventEmitter> 实例。 如果没有指定，则 n 被设置为所有新创建的 <EventTarget> 和 <EventEmitter> 对象的默认最大值。

const {
  setMaxListeners,
  EventEmitter
} = require('events');

const target = new EventTarget();
const emitter = new EventEmitter();

setMaxListeners(5, target, emitter);

• n <number> A non-negative number. The maximum number of listeners per EventTarget event.
• ...eventsTargets <EventTarget[]> | <EventEmitter[]> Zero or more <EventTarget> or <EventEmitter> instances. If none are specified, n is set as the default max for all newly created <EventTarget> and <EventEmitter> objects.

const {
  setMaxListeners,
  EventEmitter
} = require('events');

const target = new EventTarget();
const emitter = new EventEmitter();

setMaxListeners(5, target, emitter);