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

36 lines
800 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
}