ordered-read-streams
Combines array of streams into one Readable stream in strict order.
Usage
var { Readable } = require('streamx');
var ordered = require('ordered-read-streams');
var s1 = new Readable({
read: function (cb) {
var self = this;
if (self.called) {
self.push(null);
return cb(null);
}
setTimeout(function () {
self.called = true;
self.push('stream 1');
cb(null);
}, 200);
},
});
var s2 = new Readable({
read: function (cb) {
var self = this;
if (self.called) {
self.push(null);
return cb(null);
}
setTimeout(function () {
self.called = true;
self.push('stream 2');
cb(null);
}, 30);
},
});
var s3 = new Readable({
read: function (cb) {
var self = this;
if (self.called) {
self.push(null);
return cb(null);
}
setTimeout(function () {
self.called = true;
self.push('stream 3');
cb(null);
}, 100);
},
});
var readable = ordered([s1, s2, s3]);
readable.on('data', function (data) {
console.log(data);
// Logs:
// stream 1
// stream 2
// stream 3
});
API
ordered(streams, [options])
Takes an array of Readable
streams and produces a single OrderedReadable
stream that will consume the provided streams in strict order. The produced Readable
stream respects backpressure on itself and any provided streams.
orderedReadable.addSource(stream)
The returned Readable
stream has an addSource
instance function that takes appends a Readable
stream to the list of source streams that the OrderedReadable
is reading from.
License
MIT