Ergo + Compat Bugs

[NullVoxPopuli]

Web Compatibility Bugs

• <math> doesn't work glimmerjs/glimmer-vm#1593
  • Repro: Failing test for math elements glimmerjs/glimmer-vm#1660
• [Quest]: Proper ShadowDOM support #20644
  • [Bug] declarative ShadowDOM is unable to have content rendered in to it #20642
    • Repro: Failing test for declarative shadow-dom glimmerjs/glimmer-vm#1661
  • [Bug] #in-element cannot directly render in to shadow-dom #20641
  • [Bug] in-element cannot render into a document-fragment #20643
  • Improve builtin shadow-dom workflow [add shadow node opcode] glimmerjs/glimmer-vm#1195

Reactivity Bugs

• https://github.com/glimmerjs/glimmer-vm-issues/issues/4
  • Repro: Failing test for inline-if component return glimmerjs/glimmer-vm#1657

resolved with words

• Don't autotrack during destruction  glimmerjs/glimmer-vm#1630
  Solution:

  • migrate cleanup / destruction logic to registerDestructor
  • stop using @ember/component

  Examples:

  • Infinite revalidation bug error thrown in willDestroyElement calls if we set any parent properties inside it in Ember versions higher than 5.5.0  #20707
  • Potential Repro: Don't autotrack during destruction glimmerjs/glimmer-vm#1656

Parser Bugs

• https://github.com/glimmerjs/glimmer-vm-issues/issues/8

Completion Bugs / needs implemented (merged RFCs exist already)

aka, not bugs

• element
  https://github.com/emberjs/rfcs/blob/master/text/0287-promote-in-element-to-public-api.md
  • Advance RFC #0389 "Dynamic tag names in glimmer templates." (ember-element-helper) to Stage Ready for Release rfcs#1049
• on
  https://github.com/emberjs/rfcs/blob/master/text/0997-make-on-built-in.md
  • existing implementation has potentially incorrect implementation
    [Bug] DX: due to destruction happening "at any time" / asynchronously, we cannot ergonomically use a conditional on modifier (aka conditional on modifiers are not possible if the condition goes from true to true)) #20647
• on: (syntax that expands for all modifiers)
• hash
  https://github.com/emberjs/rfcs/blob/master/text/0999-make-hash-built-in.md
• method call syntax
• fn
  https://github.com/emberjs/rfcs/blob/master/text/0998-make-fn-built-in.md
• array
  https://github.com/emberjs/rfcs/blob/master/text/1000-make-array-built-in.md
• tracked-built-ins
  tracked-built-ins built-in rfcs#1068
  • Implement trackedArray(data, { equals, description }) glimmerjs/glimmer-vm#1713

In the future

• prop:

---

Bugs confirmed not in glimmer-vm

• each with an undefined element and key blows up #20786
  • not a problem with glimmer-vm, but in this special ember-only behavior: https://github.com/emberjs/ember.js/blob/main/packages/%40ember/template-compiler/lib/plugins/transform-each-track-array.ts#L26
  • additional coverage added here: Additional coverage for each iteration with undefined item and specified key glimmerjs/glimmer-vm#1658