npm install pipe-matrixRun pipe queue one by one.
When you are using pipe-queue, you may want to run these queues one by one syncly. However, pipe-matrix help you to reach this.
By using pipe-matrix, you can arrange which queue to run first and the next...
Before you start, you may read about pipe-queue. pipe-matrix is for pipe-queue, if you have not used pipe-queue in your project, you may not use pipe-matrix.
``
$ npm install pipe-matrix
`
var PipeQueue = require('pipe-queue');
var PipeMatrix = require('pipe-matrix');
var $queue1 = new PipeQueue();
$queue1.when(...).then(...)....
var $matrix = new PipeMatrix();
$matrix.when($queue1).then(function(next){
var $queue2 = new PipeQueue();
$queue2.when(...).then(...)...
.end(next);
}).then(function(next){
var $queue3 = ...
...
})
...
.end(function(){
console.log('matrix end.')
});
`
#### .when(queue)
The first queue to run, after this queue ended, the next then callback function will be run.
Don't call .end() of $queue1, end() of $queue1 will be nouse. In fact, when will override the end callback functon of $queue1.
#### .then(function(next))
function will be added to a list which pipe-matrix will run one by one.
In the function, you must run a next(), or next then callback function will not run util you run next().
next is an alias of $matrix, so you can use $matrix.next() anywhere.
Not like pipe-queue, pipe-matrix does not provide a concat function. If you want to run more than one queue in a then callback function, just use .when() to realize:
`
var $matrix = new PipeMatrix();
var $matrix.when(...).then(function(next){
$matrix.when(...queues).end(next);
}).then...
So, PipeMatrix.when to queue is almost like pipe-concat to stream.
#### .end(function)
In this function, you can put code which you want to run after all queues finished.
git clone from here
Source code is written by ES6, run
`
npm install
npm run babel
after you change the source code.