Ionic Environment Variables not set for uglify-js

[micha-walter]

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Short description of the problem:

All scripts see the Ionic Environment Variables except the uglify-js.

In APP\node_modules@ionic\app-scripts\config\uglifyjs.config.js is process.env.IONIC_ENV always undefined.

What behavior are you expecting?

uglify-js should see the Ionic Environment Variables also, so i can switch between prod or dev mode for example

Steps to reproduce:

1. extend APP\node_modules@ionic\app-scripts\config\uglifyjs.config.js which the following lines
2. run: "ionic build --prod" or ionic cordova build platform --prod
3. you see no env variable for IONIC_*.

insert any relevant code between the above and below backticks
const util = require('util');
process.stdout.write(Ionic Environment Variables"\n" + util.inspect(process.env) + "\n");

Which @ionic/app-scripts version are you using?
cli packages: (path_removed\node_modules)

@ionic/cli-plugin-cordova       : 1.6.2
@ionic/cli-plugin-ionic-angular : 1.4.1
@ionic/cli-plugin-proxy         : 1.4.1
@ionic/cli-utils                : 1.7.0
ionic (Ionic CLI)               : 3.7.0

global packages:

Cordova CLI : 7.0.1

local packages:

@ionic/app-scripts : 2.1.3
Cordova Platforms  : android 6.2.3 ios 4.4.0
Ionic Framework    : ionic-angular 3.6.0

System:

Android SDK Tools : 26.0.2
Node              : v7.8.0
OS                : Windows 8.1
npm               : 5.0.3

Other information: (e.g. stacktraces, related issues, suggestions how to fix, stackoverflow links, forum links, etc)

This issue is on windows and on mac also.

[chaityashah]

Is there any solution or workaround for the same ?
I am struggling with the same issue.