Why “pub build” do not build excatly what “pub serve” is serving?

Question

Using the current version of angular.dart.tutorial , Using the Chapter_04

• With "pub serve", the main.dart.js is a 42337 lines file and the example is working fine.
• With "pub build", the main.dart.js is a 22539 lines file and the example is NOT working when I'm serving it through an http web server.

I have the filling that it's something about the transformers.

My concern here is that, I'm working on a Angular Dart application which is working fine using "pub serve", but when I deploy it through a web application server it's not working. This web application server will provide services NOT written in Dart on which my client side written in Dart with Angular.dart rely on.

Answer 1

pub serve uses --mode=debug by default, pub build (from console) uses --mode=release as default.

I haven't tried pub serve --mode=release but I assume it results in the same output als pub build .
I tried --mode=release with pub serve but it seems not to have any effect.

Release mode does tree-shaking and minification.