CSVfor Node.js

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CSV Examples

Table of Contents

Introduction

This package proposes different API flavours. Every example is available on GitHub.

Using the stream API

This example is available with the command node samples/stream.js.

var csv = require('csv');

var generator = csv.generate({seed: 1, columns: 2, length: 20});
var parser = csv.parse();
var transformer = csv.transform(function(data){
  return data.map(function(value){return value.toUpperCase()});
});
var stringifier = csv.stringify();

generator.on('readable', function(){
  while(data = generator.read()){
    parser.write(data);
  }
});

parser.on('readable', function(){
  while(data = parser.read()){
    transformer.write(data);
  }
});

transformer.on('readable', function(){
  while(data = transformer.read()){
    stringifier.write(data);
  }
});

stringifier.on('readable', function(){
  while(data = stringifier.read()){
    process.stdout.write(data);
  }
});

Using the pipe API

This example is available with the command node samples/pipe_funny.js.

// Import the package main module
const csv = require('csv')
// Use the module
csv.generate  ({seed: 1, length: 20}).pipe(
csv.parse     ()).pipe(
csv.transform (function(record){
                return record.map(function(value){
                  return value.toUpperCase()
              })})).pipe(
csv.stringify ()).pipe(process.stdout)

Using the callback API

This example is available with the command node samples/callback.js.

var csv = require('csv');

csv.generate({seed: 1, columns: 2, length: 20}, function(err, data){
  csv.parse(data, function(err, data){
    csv.transform(data, function(data){
      return data.map(function(value){return value.toUpperCase()});
    }, function(err, data){
      csv.stringify(data, function(err, data){
        process.stdout.write(data);
      });
    });
  });
});