angular-builders VS ng-builders

You can check out his repo at: https://github.com/just-jeb/angular-builders

How does it work in Jest? The secret sauce is the jest-angular-preset project. It holds all the logic, and the Nx and just-jeb/angular-builders depend on it.

I already did it using Angular custom webpack and a custom build script I included in my angular.json file. You can just read the system env variables from the parameters provided by webpack and insert them using the webpack.DefinePlugin().

You would need a custom webpack config using asset modules to do this.

I think most people use this plugin if they want to customize the webpack config: https://github.com/just-jeb/angular-builders/tree/master/packages/custom-webpack

I use a custom webpack builder for this. There's a bit of pre-req setup to do in your angular.json, but after that you can run your own webpack script for any of your build configurations.

Yes, that’s all. Three simple functions, a little imagination, and the fulfillment of mandatory configuration contracts are all that is needed to quickly create custom builders for the Angular CLI. But an attentive reader, of course, will point out the lack of tests for a new builder. And I hope that this very reader unexpectedly ignites himself with the desire to close this gap, forks the project, and will try to write tests himself.