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Short description of the problem:

The first compilation is inconsistent with the main.js compiled the second time, but the source file has not changed.

What behavior are you expecting?

Each compilation causes main.js to change its hash, Even if the file is not changed,
I found the difference in main.js that it was IonicModule.forRoot links array's order has changed.
The first in main.js：
[
{
"loadChildren": "../components/payment/payment.module#PaymentModule",
"name": "PaymentComponent",
"segment": "payment",
"priority": "low",
"defaultHistory": []
},
{
"loadChildren": "../pages/register/register.module#RegisterPageModule",
"name": "RegisterPage",
"segment": "register",
"priority": "low",
"defaultHistory": []
}
]
The second time in main.js：
[
{
"loadChildren": "../pages/register/register.module#RegisterPageModule",
"name": "RegisterPage",
"segment": "register",
"priority": "low",
"defaultHistory": []
},
{
"loadChildren": "../components/payment/payment.module#PaymentModule",
"name": "PaymentComponent",
"segment": "payment",
"priority": "low",
"defaultHistory": []
}
]
.
Steps to reproduce:
npm run ionic-app-scripts build

insert any relevant code between the above and below backticks 

Which @ionic/app-scripts version are you using?

3.2.0
Other information: (e.g. stacktraces, related issues, suggestions how to fix, stackoverflow links, forum links, etc)