Dialog Element Missing On Close and On Cancel Event Handler in JSX

[bassettsj]

Stencil version:

 @stencil/core@0.12.4

I'm submitting a:

[x] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://stencil-worldwide.herokuapp.com/ or https://forum.ionicframework.com/

Current behavior:

[ ERROR ]  TypeScript: src/components/my-component/my-component.tsx:31:10
           Property 'onClose' does not exist on type
           'DialogHTMLAttributes'.

     L31:            onClose={this.onClose}
     L32:            onCancel={this.onClose}

https://github.com/bassettsj/stencil-dialog-element-bug

Expected behavior:

Expected to recognize the onClose and onCancel event handlers for the HTMLDialogElement

Steps to reproduce:
https://github.com/bassettsj/stencil-dialog-element-bug

1. remove the @ts-ignore comment and run npm run build

Other information:

Fix would only be adding this to the type definitions so it will work as expected.

[arjunyel]

I think I added the onClose but I didnt see the onCancel in the spec? I very possibly missed it #1348 https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element