events-bluebird

events-bluebird

This is a lightweight wrapper for native node events.
Adds EventEmitter.prototype.emitAsyncSeries & EventEmitter.prototype.emitAsyncParallel methods. The API reflects native EventEmitter API with the following necessary changes:

• Added methods return a Promise object which when fulfilled, returns true if the event had listeners, false otherwise
• node's deprecated domain feature is not supported

Installation

npm install events-bluebird

Example

var EventEmitter = require('events-bluebird').EventEmitter;

var emitter = new EventEmitter;

emitter.on('event', function(param) {
    return new Promise(function(resolve, reject) {
        setTimeout(function() {
            console.log('first');
            return resolve();
        }, 500);
    });
});

emitter.on('event', function(param) {
    console.log('later');
});

emitter.emitAsyncSeries('event', 'param').then(function(hadListeners) {
    console.log(hadListeners);//true
});

// Output:
// first
// later
// true

Tests

npm test