emitter.setMaxListeners(100);
emitter.addListener('send', listener1);
emitter.on('send', listener2);
emitter.on('send', listener3);
emitter.once('send', listener);
emitter.once(1, listener4);
emitter.prependListener('send', listener5);
emitter.prependOnceListener('send', listener6);
emitter.listeners('send');
emitter.listenerCount('send');
emitter.rawListeners('send');
EventEmitter.defaultMaxListeners = 100;
console.log(`count(static): ${EventEmitter.listenerCount(emitter, 'send')}`);
console.log(`ncount: ${emitter.listenerCount('send')}`);
console.log(`maxListeners: ${emitter.getMaxListeners()}`);
console.log(`eventNames: ${emitter.eventNames().join(', ')}`);
console.log(`rawListeners count: ${emitter.rawListeners('send').length}`);
setTimeout(() => {
console.log('\n');
emitter.emit('send');
import * as events from 'events';
const emitter: events.EventEmitter = new events.EventEmitter();
const event: string | symbol = '';
const listener: (...args: any[]) => void = () => {};
const any: any = 1;
{
let result: events.EventEmitter;
result = emitter.addListener(event, listener);
result = emitter.on(event, listener);
result = emitter.once(event, listener);
result = emitter.prependListener(event, listener);
result = emitter.prependOnceListener(event, listener);
result = emitter.removeListener(event, listener);
result = emitter.off(event, listener);
result = emitter.removeAllListeners();
result = emitter.removeAllListeners(event);
result = emitter.setMaxListeners(42);
}
{
let result: number;
result = events.EventEmitter.defaultMaxListeners;
result = events.EventEmitter.listenerCount(emitter, event); // deprecated
const promise: Promise<any> = events.once(new events.EventEmitter(), 'error');
result = emitter.getMaxListeners();