How can I use environment variables in Angular at build time?

How can I use environment variables in Angular at build time?

You can use environment variables in Angular by defining them in the environment.ts files and accessing them in your code.

Can you show me how to set up different environments for development and production?

Sure! You can create environment.dev.ts and environment.prod.ts files, then use the fileReplacements option in angular.json to switch between them.

What if I want to access these variables in my services?

You can import the environment file in your service and access the variables directly, like environment.apiUrl.

Are there any security concerns I should be aware of?

Yes, avoid exposing sensitive information in your environment files, especially in production builds.