Remove Ember.View support when not using ember-legacy-views addon.

[rwjblue]

• Only export the following when Ember.ENV._ENABLE_LEGACY_VIEW_SUPPORT is set:
  • Ember.CoreView here removed in [CLEANUP beta] Remove deprecated Ember.View support from Ember global #11794
  • Ember.View here removed in [CLEANUP beta] Remove deprecated Ember.View support from Ember global #11794
  • Ember.Select here removed in [CLEANUP beta] Remove deprecated Ember.View support from Ember global #11794
  • Ember._Metamorph here removed in [CLEANUP beta] Remove deprecated Ember.View support from Ember global #11794
  • Ember._MetamorphView here removed in [CLEANUP beta] Remove deprecated Ember.View support from Ember global #11794
  • Ember._LegacyEachView here removed in [CLEANUP beta] Remove deprecated Ember.View support from Ember global #11794
• Only add the following AST Transforms when Ember.ENV._ENABLE_LEGACY_VIEW_SUPPORT is set:
  • TransformEachIntoCollection here
  • DeprecateViewAndControllerPaths here
  • DeprecateViewHelper here
• Only add the following keywords/helpers when `` is set:
  • {{view}} here
  • legacyEachWithControllerHelper here
  • legacyEachWithKeywordHelper here
• Fix all the tests.

[rwjblue]

I believe that @martndemus was interested in this one...

[ghost]

[rwjblue]

CONFIRM

[ghost]

Hiding Ember.View behind a feature flag is easy. Finding a way to reload Ember with a feature flag enabled seems impossible. How was this done with other feature flags?

[ghost]

[mixonic]

[rwjblue]

This was all fixed by @martndemus a few days.

[justinaray]

I came across this when I finally got around to upgrading my app to 2.0. I was surprised to find that the deprecation is listed as until: 2.4 but that you need the ember-legacy-views addon to actually utilize the deprecated classes, etc.

If someone is filtering out only 2.0 deprecations to make the jump, they could easily miss View-based deprecations. Even worse if they missed the blog post and didn't know about the addon.

Sorry to comment on an old issue, but didn't know if this should be a new issue or added here. Happy to open an issue and/or PR if you think it worthwhile.

Despite a little confusion with this one, feature-flag deprecations FTW!!! ;)