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A duplex stream that can lazily create child streams from a chunk and merge all outputs into one
JavaScript
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README.md

cascade-stream

NPM

Travis

A duplex stream that can lazily create child streams from a chunk and merge all outputs into one

example

var from = require('from2-array')
var through = require('through2')
var cascade = require('cascade-stream')

// create a stream for a single letter
function createLetterStream(letter){
    return from.obj([1,2,3].map(function(num){
        return letter + ':' + num
    }))
}

var source = from.obj(['a', 'b', 'c'])

var pipeline = cascade(function(chunk, add, next){
    add(createLetterStream(chunk))
    next()
})

var sink = through.obj(function(chunk, enc, cb){
    console.log(chunk);
    cb()
})

source.pipe(pipeline).pipe(sink)
/*

    a1
    a2
    a3
    b1
    b2
    b3
    c1
    c2
    c3

*/

license

MIT

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