New Dart Stable channel build: 1.2.0

[Kevin Moore]

You can download v1.2 at the Download Dart page.

If you are running the Dart Editor v1.1 you can update by checking "About Dart Editor".

VM changes include:

• Improved debugging experience. Highlights:

• Fix stepping in recursive functions

• Allow breakpoints at local variable assignments

• Eliminate side-effects when interacting with the debugger

• Reduce memory overhead of parameterized types

• Many performance and stability improvements

SDK changes include:

• dart:io (these are all the changes since 1.0)

• WebSocket throughput improved by 15x

• Async primitives speedup of 10-20%

• dart:mirrors

• Optimized reflective access to fields (InstanceMirror.getField)

• Dartium built on Chrome 33 Beta

• New dartdoc generator (docgen)
  

• Preview of Dart formatter (dartfmt)

• Note: the formatter is under active development. Please use with care and report issues.

Pub changes include:

• Support for “lazy transformers” like dart2js. Improves startup time of pub serve, especially in packages with many entrypoints.

• Handle .dart.precompiled.js and .dart.js.map files in your package.

• Proper MIME type handling in pub serve.

• Assets in your dependencies’ “lib” folders will be copied to “packages” in pub build.

• New pub cache add command to download a package into your system cache.

• Support for configuring dart2js from your pubspec.

Editor changes include:

• Extensive Angular support.

• Search and navigation support for Angular elements.

• Rename refactoring support for Angular elements.

• Angular-specific warnings.

• Access to dartfmt preview via “Format” command added to the right-click context menu for Dart files

• Allow renaming when pasting a file.

• Add @override when creating missing overrides.

• Run as JavaScript uses pub build to generate JavaScript.

• Run in Browser context menu for launching files in build directories.

• Various code completion fixes and improvements.

• Various auto-indent fixes and improvements.

• Significant performance improvements.

dart2js changes include:

• Metadata @annotations work on parameters

• Lots of bug fixes