const Evento = require('evento-ts');
const EventBus = new Evento();

EventBus.on('stuff', (payload: any) => {
 console.log(payload);
});

EventBus.once('stuff', (payload: any) => {
 console.log(payload);
});

// Somewhere in your code
EventBus.off('stuff', callback);

// Somewhere in your code
EventBus.dispatch('stuff', 'take this!');

const unsubscribe = EventBus.on('stuff', (payload: any) => {
  console.log(payload);
});
unsubscribe();