42 lines
899 B
JavaScript
42 lines
899 B
JavaScript
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const through = require('through2')
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module.exports = ObjectMultiplex
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function ObjectMultiplex(opts){
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opts = opts || {}
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// create multiplexer
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var mx = through.obj(function(chunk, enc, cb) {
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var name = chunk.name
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var data = chunk.data
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var substream = mx.streams[name]
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if (!substream) {
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console.warn("orphaned data for stream " + name)
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} else {
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substream.push(data)
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}
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return cb()
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})
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mx.streams = {}
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// create substreams
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mx.createStream = function(name) {
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var substream = mx.streams[name] = through.obj(function(chunk, enc, cb) {
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mx.push({
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name: name,
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data: chunk,
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})
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return cb()
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})
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mx.on('end', function() {
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return substream.emit('end')
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})
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if (opts.error) {
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mx.on('error', function() {
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return substream.emit('error')
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})
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}
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return substream
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}
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return mx
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}
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