pub build works poorly for non-web uses

[ianloic]

I have written a pub transformer that packages a dart application as a snapshot for use in a particular embedding. My pubspec contains:

transformers:
  - my_transformer
  # Stop dart2js from running
  - $dart2js:
      $exclude: "**.dart"

because otherwise dart2js will try to run against all my code.

I have to invoke pub build --all because without --all I get an error:

Your package must have a "web" directory,
or you must specify the source directories.

[zoechi]

pub build and transformers are only supposed to be used to build for the web.
What are you actually trying to accomplish?

[matanlurey]

We are no longer supporting transformers or pub serve/build going forward (this tooling has moved elsewhere into the https://github.com/dart-lang/build repository and https://github.com/dart-lang/webdev CLI) so a fix for this is not planned.

We'll be updating the tooling section of the Dart website in the coming weeks with more formal documentation on how to get started.