nifty-wallet/app/scripts/lib/stream-utils.js

36 lines
788 B
JavaScript

const Through = require('through2')
const ObjectMultiplex = require('./obj-multiplex')
module.exports = {
jsonParseStream: jsonParseStream,
jsonStringifyStream: jsonStringifyStream,
setupMultiplex: setupMultiplex,
}
function jsonParseStream(){
return Through.obj(function(serialized, encoding, cb){
this.push(JSON.parse(serialized))
cb()
})
}
function jsonStringifyStream(){
return Through.obj(function(obj, encoding, cb){
this.push(JSON.stringify(obj))
cb()
})
}
function setupMultiplex(connectionStream){
var mx = ObjectMultiplex()
connectionStream.pipe(mx).pipe(connectionStream)
mx.on('error', function(err) {
console.error(err)
})
connectionStream.on('error', function(err) {
console.error(err)
mx.destroy()
})
return mx
}