Nodejs Queue and Promise Based Work Queue

Queue Processing (queue.js)

Provide a queue mechanism.

``js
const { Queue } = require('@ntlab/work');

const queues = ['One', 'Two', 'Three'];
const q = new Queue(queues, seq => {
console.log(seq);
q.next();
});
q.once('done', () => {
...
});
`

Promise Based Work Queue (work.js)

Provide promise queue mechanism for easy chaining. It accepts a function as its
worker. Its also accepts an array with signature of [[string,] function, function].
If the first element is a string, it is considered as step name and can be used to
reference the result later, otherwise the first element would be the worker and
the second would be a state function and must be evaluated to true for worker to
be executed.

`js
const { Work } = require('@ntlab/work');

Work.works([
['step-1', w => new Promise((resolve, reject) => {
console.log('First work');
resolve(false);
})],
['step-2', w => new Promise((resolve, reject) => {
console.log('This will be skipped');
resolve();
}), w => w.getRes(0)/ can be referenced using w.getRes('step-1') /],
['step-3', w => new Promise((resolve, reject) => {
console.log('It\'s done');
resolve();
})],
])
.then(res => {
...
})
.catch(err => {
...
});
``