Add implicit constraints from pub onto stack_trace and source_maps. These packages are used in pub's plugin isolate, so pub needs to have a dependency on them to ensure their APIs don't change out from under it. R=rnystrom@google.com BUG=19574 Review URL: https://codereview.chromium.org//356523003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@37751 260f80e4-7a28-3924-810f-c04153c831b5
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.