Install

npm install --save isprod

Usage

env.prod:   RUNMODE=prod|product|production
        or  NODE_ENV=prod|product|production

env.dev:    RUNMODE=dev|develop|development
        or  NODE_ENV=dev|develop|development

arg.prod:   --prod|--product|--production

arg.dev:    --dev|--develop|--development

priority:   arg.prod > arg.dev > env.prod > env.dev

arg.prod	arg.dev	env.prod	env.dev		result
no	no	no	no		false
no	no	no	yes		false
no	no	yes	no		true
no	no	yes	yes		true
no	yes	no	no		false
no	yes	no	yes		false
no	yes	yes	no		false
no	yes	yes	yes		false
yes	no	no	no		true
yes	no	no	yes		true
yes	no	yes	no		true
yes	no	yes	yes		true
yes	yes	no	no		true
yes	yes	no	yes		true
yes	yes	yes	no		true
yes	yes	yes	yes		true

var is_prod = require('isprod'); // boolean

Example

Config.js

var common = {
    appName: "App Name",
    mailSender: {
        displayName: 'Notify',
        service: 'QQ',
        auth: {
            user: 'xxxxxx@qq.com',
            pass: 'xxxxxxxxxxxxx'
        }
    }
};

var dev = {
    server: {
        domain: 'http://localhost:8080',
        port: 8080,
        httpsPort: 8443
    },
    mongodb: {
        url: "mongodb://localhost/test",
        options: {
            server: {
                poolSize: 5,
                socketOptions: {
                    keepAlive: 300
                }
            }
        }
    },
    redis: {
        host: "localhost",
        port: 6379
    }
};

var prod = {
    server: {
        domain: 'http://should.set.it.in.config.js',
        port: 8083
    }
};

Object.assign = require('object-assign');

if (require('isprod')) {
    module.exports = Object.assign({}, common, prod);
} else {
    module.exports = Object.assign({}, common, dev);
}

Server.js

...

server.listen(require('./Config.js').server, callback);

...