serialization using jsonstream

jsonstream.js

var fileSystem = require( "fs" );
var JSONStream = require( "JSONStream" );
var books = [
  {name: "The Philosopher's Stone", year: 1997},
  {name: "The Chamber of Secrets", year: 1998},
  {name: "The Prisoner of Azkaban", year: 1999},
  {name: "The Goblet of Fire", year:2000},
  {name: "The Order of the Phoenix", year:2003},
  {name: "The Half-Blood Prince", year:2005},
  {name: "The Deathly Hallows", year:2007}
];

var transformStream = JSONStream.stringify();
var outputStream = fileSystem.createWriteStream( __dirname + "/hpdata.json" );

transformStream.pipe( outputStream );

books.forEach( transformStream.write );
  transformStream.end();
  outputStream.on(
    "finish",
    function handleFinish() {
      console.log( "JSONStream serialization complete!" );
    }
  );
 outputStream.on(
  "finish",
  function handleFinish() {
    var transformStream = JSONStream.parse( "*" );
    var inputStream = fileSystem.createReadStream( __dirname + "/data.json" );
    inputStream
      .pipe( transformStream )
      .on(
        "data",
        function handleRecord( data ) {
          console.log( "Record (event):" , data );
        }
        )
      .on(
        "end",
        function handleEnd() {
          console.log( "JSONStream parsing complete!" );
        }
      );
   }
);