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

37 lines
749 B
JavaScript

const Through = require('through2')
const ObjectMultiplex = require('obj-multiplex')
const pump = require('pump')
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) {
const mux = new ObjectMultiplex()
pump(
connectionStream,
mux,
connectionStream,
(err) => {
if (err) console.error(err)
}
)
return mux
}