+ guide/pipes/ts: update docs and example code
+ guide/pipes/dart: new prose, updated example code
+ fix platform_directives reference; html cleanup
+ enable pipes e2e testing
For `e2e-spec.js`: If the async test is executed too early it will fail
(simply because the async message hasn’t been received yet).
+ follow new constants naming convention
Mainly copyedits, but also
- Dart .jade extends TS .jade file with minor overrides
- Significant update of example code (so it matches the ts example in its
appearance and behavior).
- Tweaks to Dart code.
- A few extra/corrected mixin definitions in `_util-fns.jade`.
Patrice Chalin
Patrice Chalin
Josh Otis