Async queue manager for node and browser.
Its particularly useful where you want to know if your system is busy with async activities like ajax calls etc. You can push promises in to the queue and buzy will do the job of letting you know when the state of the system changes.
$ npm install buzyimport Buzy from 'buzy';
const buzy1 = new Buzy;
const buzy2 = new Buzy([function(message) {
console.log(message);
}], [buzy1]);
buzy1.addPromise(new Promise(function(resolve, reject) {
setTimeout(function() {
resolve('done');
}, 1000);
}))new Buzy(subscribers, buzies);- subscribers - array of functions which will be called upon the change when there is a state change or when a promise is resolved/reject(this wont be triggered for buzies dependent on other buzies)
- buzies - array of buzies to subscribe on to
Subscribers will be called with the following message data structure
{
code: number, // 0 - STATE change, 1 - RESOLVE, 2 - REJECT
busy: true/false,
promise: promise, //promise which is last resolved/rejected
value: value, // value of the resolution
error: error // error of the rejection
}New promises can be added with:
buzy.addPromise(promise) //single promise
buzy.addPromises(promises) //array of promisesNew subscribers can be added with:
buzy.addSubscriber(subscriber) //single subscriber
buzy.addSubscribers(subscribers) //array of subscribersNew buzies can be added with:
buzy.addBuzy(buzy) //single buzy
buzy.addBuzies(buzies)//array of buziesTo check is a buzy is busy or not:
buzy.isBusy() //true or false- Cancellation of requests
- You tell me!