Qfyilyi

In my node app, I want to set production and development in my config.js file.

For that I have all most set all thing but I'm still mssing some thing.

I want to get config data like database credential from config fiel based on my development mode. If I upload on live then app will use live cred. On other hand if I used local then it should be use local cred.

module.exports = function () {

console.log("Process env is ::: ", process.env.NODE_ENV);

if (process.env.NODE_ENV == 'production') {

    return {

        db : {

            host:'localhost',

            batabase:'dbname',

            username:'',

            password:''

        }

    }   

} else {

    return {

        db : {

            host:'localhost',

            batabase:'dbname',

            username:'',

            password:''

        }

    }

}

};

Thanks in advanced. I have taken ref from this answer

Just try this way.

module.exports = (function () {

  process.env.NODE_ENV='development';

  if(process.env.NODE_ENV === 'production'){

       // Config data of Live

  }else{

       //Config data of Local

  }

})()

This works for me. :)

process.env refers to the Environment Variables exists at the time you start you nodejs app . (it's part of the os)

When you deploy to cloud , usually it's handled for you already (process.env.NODE_ENV = production) .
Some cloud providers even give you the option to control it via a GUI .

But for local environment , you can use .dotenv package . (https://github.com/motdotla/dotenv)

With this package you create a .env file at the top of your project ,

and just write down NODE_ENV = local/staging/production

Please note that you can always run in shell:

export NODE_ENV=production

(WATCH FOR WHITESPACES !)
before you start you nodejs app which will also give you the effect
of controlling process.env

Using the config files in other files, just by requiring it .

const config = require('path/to/config.js');

then config.data.host will be changed depend on the NODE_ENV

You can use nconf npm

let myconfig.js

var nconf = module.exports = require('nconf');

var path = require('path');



nconf

    // 1. Command-line arguments

    .argv()

    // 2. Environment variables

    .env([

        'MYSQL_PASSWORD',

        'MYSQL_HOST',

        'PORT'

    ])

    // 3. Config file

    .file({file: path.join(__dirname, 'config.json')})

    // 4. Defaults

    .defaults({



        //Development DB config details

        MYSQL_USER: 'XXXX',

        MYSQL_PASSWORD: 'XXXX',

        MYSQL_HOST : 'localhost',

        PORT:8081



    });

app.js

const myconfig = require('./configurations/myconfig');

//IT ll fetch PORT ffrom process.env.PORT else not declare ll use default which is 8081 defined in myconfig.js



const PORT=myconfig.get('PORT')//8081



module.exports = function () {

console.log("Process env is ::: ", process.env.NODE_ENV);

if (process.env.NODE_ENV == 'production') {

    return {

        db : {

            host:process.env.HOST,

            database:process.env.DBNAME,

            username:process.env.username,

            password:process.env.password

        }

    }   

} else {

    return {

        db : {

            host:'localhost',

            batabase:'dbname',

            username:'',

            password:''

        }

    }

}

};

You have to set your HOST/DBNAME/PASSWORD variables in production env[cloud heroku/aws/gcp]