Display better information in the component tree when you come across a unknownTemplateOnlyComponent #2695

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1. NullVoxPopuli commented on Oct 17, 2025

   

   NullVoxPopuli

   on Oct 17, 2025

   Last edited by NullVoxPopuli

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   How would rendering this be displayed?

   <template>
     {{#each @formats as |format|}}
       <format />
     {{/each}}
   </template>

   Seems like logic would have to be:

   • Invocation name if non-dynamic
   • if dynamic reference:
     • defined class name, if a class
     • unknown-template-only-component
     • unless in dev: compiler could include the const name (though, maybe this goes in prod as well, in place of modulePath or whatever that field is called in the wire format
2. patricklx commented on Oct 17, 2025

   

   patricklx

   on Oct 17, 2025

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   Also related:

   This is why i often add this babel plugin: https://github.com/ember-cli/ember-template-imports/blob/92738a3fe45e1639413fcb78233c0e146b02ade2/src/babel-plugin.js#L5

   There is a long discussion here:
   emberjs/babel-plugin-ember-template-compilation#58

   Tldr is:
   We need to wait for a proper fix in glimmer. (And that will probably only happen after it's merged into ember-source)
3. BlueCutOfficial

   added this to Mainmatter Ember Initiativeon Jan 6, 2026
4. BlueCutOfficial

   moved this to Todo in Mainmatter Ember Initiativeon Jan 6, 2026