I am looking to customize certain variables in Angular 4 based on whether the app is running on a production server or localhost for development purposes. Is there a way to achieve this differentiation? While I utilize environment variables in node.js, I am unsure of how to implement similar functionality in an Angular web application. What would be the most effective approach to configuring Angular for production without manual intervention prior to deployment?
If you have used the enableProdMode() method in your main.ts file, you can utilize isDevMode from @angular/core to determine whether the Angular app is running in production mode or not.
For instance:
import { Component, isDevMode} from '@angular/core';
@Component({...})
export class HomePageComponent {
constructor() {
if(isDevMode()){
console.log("HomePageComponent created");
}
}
}
This is one approach to check the application's mode.
However, a more environment-specific method involves using the environment files generated by angular-cli. These files allow you to configure values based on the mode in which you run the live server or build your source code. More information can be found in this link
When you create a standard project using Angular-Cli, there is a class called 'environment' included. This class allows you to assign different values for different versions (such as 'production'), and the cli will automatically select the correct one when you build
To build for production mode, use the following command:
ng build --prod
For more information, refer to the documentation: https://angular.io/guide/deployment#enable-production-mode
You can use this code snippet to check if you are in production mode:
import { environment } from '../environments/environment';
console.log(environment.production);
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