event module in node js
const EventEmitter = require('events');
class MyEmitter extends EventEmitter {
foo() {
this.emit('test');
}
}
const myEmitter = new MyEmitter();
myEmitter.on('test', () => console.log('Yay, it works!'));
myEmitter.foo(); // Yay it works!const myEmitter = new MyEmitter();
let m = 0;
myEmitter.on('event', () => {
console.log(++m);
});
myEmitter.emit('event');
// Prints: 1
myEmitter.emit('event');
// Prints: 2
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