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app's TS files do not properly overwrite an addon's JS files

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#774 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, typescript
Domain
frontend

Research direction

Reproduce the component override using the shown my-addon/addon and my-app/app TypeScript and JavaScript files, then compare it with the working JavaScript override. Trace how the app component is resolved over the addon's component and identify why the TypeScript version fails. Done means a TypeScript app component and template can replace the addon's JavaScript component while retaining the Glint declarations.

Written by the indexing model from the issue text.

Description

I have the following example component in my addon:

my-addon/addon/components/example/index.ts

import templateOnly from '@ember/component/template-only';
export default templateOnly();
```hbs
**my-addon/addon/components/example/index.hbs**
Whatever ``` **my-addon/app/components/example/index.js** ```js export { default } from 'my-addon/components/loading'; ```

Then in my app I completely replace it with a new template AND "backing class" with some Glint because why not:
my-app/app/components/index.ts

import templateOnlyComponent from '@ember/component/template-only';

interface LoadingSignature {
  Element: HTMLElement; // <i>
}

const LoadingComponent = templateOnlyComponent<LoadingSignature>();
export default LoadingComponent;

declare module '@glint/environment-ember-loose/registry' {
  export default interface Registry {
    Loading: typeof LoadingComponent;
  }
}

my-app/app/components/index.hbs

<div>Whatever</div>

This does not work and throws the following error:
image

It does work when using a JS file to overwrite the component:
my-app/app/components/index.js

// I have lost all my Glint stuff, because it's a JS file :'(
import templateOnlyComponent from '@ember/component/template-only';
const LoadingComponent = templateOnlyComponent();
export default LoadingComponent;

my-app/app/components/index.hbs

<div>Whatever</div>
Dominant language
JavaScript
Stars
77
Forks
65
No merged PRs in 30d

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