Import template registry from ember-template-imports-enabled addon

[charlesfries]

Ember.js 4.6.0
Ember CLI 4.12.0

I have an Ember app and an Ember v1 addon. Both packages use Glint and ember-template-imports .gts files for components. The addon provides a template-registry.ts file that the host app extends in types/global.d.ts per the Glint docs.

My question: should addon/template-registry.ts be converted to .gts while using template imports/strict mode?

If I leave it as .ts I am unable to import the addon's .gts components and helpers without seeing TypeScript missing import errors. If I convert it to .gts, everything works fine until I extend that registry in the host app, which yields that same error.

I imagine I cannot just forgo importing the registry altogether because I still need those signatures for components used in .hbs files (in route templates for example)