This file contains highlights of what changes on each version of the polymer package. We will also note important changes to the polyfill packages (observe, web_components, and template_binding) if they impact polymer.
New: When running in pub-serve, any warnings and errors detected by the polymer transformers will be displayed in the lower-right corner of your entrypoint page. You can opt-out by adding this option to your pubspec:
transformers:
- polymer:
...
inject_build_logs_in_output: false
New: there are now two template generators in the polymer package! On any project that depends on polymer, you can create template files for a new custom element by invoking:
pub run polymer:new_element element-name [-o output_dir]
And, if you invoke:
pub run polymer:new_entry web/index.html
we will create a new entry-point file and add it to your pubspec for you.
Added the ability to override the stylesheet inlining behavior. There is now an option exposed in the pubspec.yaml called inline_stylesheets. There are two possible values, a boolean or a map. If only a boolean is supplied then that will set the global default behavior. If a map is supplied, then the keys should be file paths, and the value is a boolean. You can use the special key ‘default’ to set the default value.
For example, the following would change the default to not inline any styles, except for the foo.css file in your web folder and the bar.css file under the foo packages lib directory:
transformers:
- polymer:
...
inline_stylesheets:
default: false
web/foo.css: true
packages/foo/bar.css: true
Bug fix for http://dartbug.com/20286. Bindings in url attributes will no longer throw an error.
unittest._src and similar attributes in polymer transformers.getLocationMessage.source_maps' Span class to source_span's SourceSpan class.<head>.<polymer-element>.@ are no longer supported.@published by default is no longer reflected as an attribute by default. This might break if you try to use the attribute in places like CSS selectors. To make it reflected back to an attribute use @PublishedProperty(reflect: true).<link rel="import" href="packages/polymer/polymer.html">@ObserveProperty('foo bar.baz') myMethod() {...} will cause myMethod to be called when “foo” or “bar.baz” changes.