concatjson

#concatjson

Inspired by https://github.com/maxogden/ndjson

concatjson is concatenated JSON streaming parser/serializer for node.js.

###Install

npm i concatjson

###Usage

concatjson.parse()

• @return {Stream.Transform} a Transform stream

parses concatenated JSON stream and emits javascript objects.

somefile (contains concatenated JSON objects)

{"foo":"bar"}{"qux":"corge"}{"baz":{"waldo":"thud"}}

const fs = require('fs')
const cj = require('concatjson')

fs.createReadStream('./somefile')
  .pipe(cj.parse())
  .on('error', (err) => { console.error(err) })
  .on('data', (obj) => {
    // obj is a js object
  })

concatjson.serialize()

alias: concatjson.stringify()

• @return {Stream.Transform} a Transform stream

accepts objects and emits stringified JSON objects.

const cj = require('concatjson')
var ser = cj.serialize()
ser.write({foo: 'bar'})
ser.end()
ser.on('data', (dat) => {
  // dat is stringified JSON
})

#####append object to a file Inspired by https://github.com/jprichardson/node-jsonfile

const fs = require('fs')
const cj = require('concatjson')

// use flag 'a' for appending
var w = fs.createWriteStream('./somefile', {flags: 'a'})
var ser = cj.serialize()

// listen to all error events
w.on('error', (err) => { console.error(err) })
ser.on('error', (err) => { console.error(err) })

ser.write({foo: 'bar'})
ser.end()
ser.pipe(w).on('finish', () => {
  console.log('appended successfully.')
})

###License MIT