Read through this list of APIs that are being removed in Ember 4. If we are using any of them in the guides/release folder, comment or open new issues/PRs. Thank you.

The list of removed APIs is in this blog post: Road to Ember 4

Main Ember 4 tracking issue

Road to Ember 4

mixonic's quest

Blocking

• transitionTo/transitionToRoute/replaceWith/replaceWithRoute
  • deprecation: https://deprecations.emberjs.com/v3.x/#toc_routing-transition-methods)
  • PR: Ember 4.0 preparation #1753
  • https://guides.emberjs.com/release/routing/defining-your-routes/#toc_transitioning-between-routes transitionTo and transitionToRoute on the route and controller respectively should be dropped.
  • Also at https://guides.emberjs.com/release/routing/preventing-and-retrying-transitions/
  • replaceWith, same thing, at https://guides.emberjs.com/release/routing/loading-and-error-substates/
  • transitionTo, same thing, at https://guides.emberjs.com/release/routing/query-params/
  • Also https://guides.emberjs.com/release/routing/asynchronous-routing/
• Update "Ember Data: Introduction" guide #1755
• Remove tagName from LinkTo Remove deprecated use of tagName in LinkTo #1759

Non-blocking

• Remove A() usage from "Looping through lists" guide #1756
  • Replaces EmberArray with tracked property in "Looping through lists" #1758
• Improve error catching flow in "Defining Your Routes: Wildcard/Globbing Routes" guide section #1757
• Update "Router Events" deprecation guide deprecation-app#1034
• Update "Redirection" guide for 4.0 #1754

Unclear

• Need to assert ember-modifiers is compatible with 4.0
• This deprecation guide entry is poorly formatted. The component names should not be part of the list: https://deprecations.emberjs.com/v3.x/#toc_ember-built-in-components-legacy-arguments
• Some weird promise stuff at https://guides.emberjs.com/release/routing/asynchronous-routing/

Audit needed

• Application Development: https://guides.emberjs.com/release/applications/
• Developer Tools: https://guides.emberjs.com/release/ember-inspector/
• Additional Resources: https://guides.emberjs.com/release/upgrading/
• Should search for transition.params and friends to make sure they aren't used, as deprecated at https://deprecations.emberjs.com/v3.x/#toc_transition-state