nanotask 
Microtask queue scheduler for the browser. Falls back to window.requestAnimationFrame in environments that don't allow MutationObserver based scheduling.
The microtask queue is a set of tasks that runs at the end of the current frame in the browser, before recalculating style and painting. This is analogous to process.nextTick() in Node. There's no direct API for the microtask queue in the browser, but using document.MutationObserver we can trick the browser into running functions as part of the microtask queue. This is useful to create tight, 60fps loops in the main browser thread.
Usage
var nanotask = require('nanotask')
var queue = nanotask()
queue(function () {
console.log('resolved at the start of the next frame')
})
API
queue = nanotask()
Create a new Nanotask instance.
queue(fn)
Queue a function on the browser's microtask queue.
Installation
$ npm i nanotask
