CSV to JSON node js

gistfile1.js

var Converter=require("csvtojson").core.Converter;

var csvConverter=new Converter({constructResult:false, toArrayString:true}); // The constructResult parameter=false will turn off final result construction in memory for stream feature. toArrayString will stream out a normal JSON array object.

var readStream=require("fs").createReadStream("top-1m.csv"); 

var writeStream=require("fs").createWriteStream("outpuData.json");

readStream.pipe(csvConverter).pipe(writeStream);