[vue-component-meta] JSDoc tags in defineEmits are not included in generated EventMeta

[oljc]

Vue version

3.5.13

TypeScript version

5.8.3

Steps to reproduce

Define defineEmits in Vue’s <script setup> syntax as follows:

const emit = defineEmits<{
  /**
   * @zh 点击时触发
   * @en Emitted when the link is clicked
   */
  (e: 'click', ev: MouseEvent): void;
  /**
   * @zh 用户点击链接时触发
   * @en Triggered when the user clicks on the link
   */
  (e: 'select', hash: string | undefined, preHash: string): void;
}>();

Parse the output：

[
  {
    name: 'click',
    description: '',
    tags: [],
    type: '[ev: MouseEvent]',
    rawType: undefined,
    signature: '(event: "click", ev: MouseEvent): void',
    declarations: [Getter],
    schema: [Getter]
  },
  {
    name: 'select',
    description: '',
    tags: [],
    type: '[hash: string, preHash: string]',
    rawType: undefined,
    signature: '(event: "select", hash: string, preHash: string): void',
    declarations: [Getter],
    schema: [Getter]
  }
]

What is expected?

Tags in JSDoc comments for defineEmits should be extracted correctly, just like they are for Props.

What is actually happening?

does not correctly extract tags from JSDoc comments when parsing components.

Link to minimal reproduction

No response

Any additional comments?

No response

[KazariEX]

Which version of vue-component-meta did you use? I cannot reproduce this.

[oljc]

@KazariEX I’m using the latest version.
repro: https://stackblitz.com/edit/vitejs-vite-ajyz7qdb?file=scripts%2Fdocgen.ts
You can add Terminal run npm run docgen to see the issue.

[KazariEX]

Yes I can reproduce it at stackblitz but cannot do it locally. I don't know how to investigate it.

It is worth noting that the types generated on stacklitz do not seem to be correct either.

[oljc]

I’m seeing the same issue locally — tags from defineEmits aren’t being extracted correctly, just like in the Stackblitz example. Meanwhile, extracting from defineProps works as expected. So I suspect it could be a bug in vue-component-meta, and I’m still investigating on my side as well.

[oljc]

I cloned the repository and modified the test cases under the component-meta/reference-type-events directory, it extracts correctly there. However, in my own project and the Stackblitz example, the issue still exists. 🤔

[gcaaa31928]

I feel like this issue probably exists in the v2 branch rather than the master branch.