Using spawn function with NODE_ENV=production

Question

I\'m currently trying to run process using spawn. What I am trying to run from shell is the following;

NODE_ENV=production node app/app.js

Answer 1

This worked for me

var spawn = require('child_process').spawn;
var productionEnv = Object.create(process.env);
productionEnv.NODE_ENV = 'production';
var start = spawn('node', ['app.js'], {env: productionEnv});

this did not

var spawn = require('child_process').spawn;
var start = spawn('node', ['app.js'], {env: {NODE_ENV: 'production'}});