Don't make lazy transformers eager when an asset is requested.

Instead, they'll only be active long enough to finish applying, then become lazy
again.

R=rnystrom@google.com
BUG=17903

Review URL: https://codereview.chromium.org//233843002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@35055 260f80e4-7a28-3924-810f-c04153c831b5
5 files changed
tree: 28b24fc56888a58aec8f77019240d59ce7aa01f5
  1. example/
  2. lib/
  3. test/
  4. CHANGELOG.md
  5. LICENSE
  6. pubspec.yaml
  7. README.md
README.md

Barback is an asset build system. It is the library underlying pub's asset transformers in pub build and pub serve.

Given a set of input files and a set of transformations (think compilers, preprocessors and the like), it will automatically apply the appropriate transforms and generate output files. When inputs are modified, it automatically runs the transforms that are affected.

To learn more, see here.