Unknown property `allowTransparency` found (`react/no-unknown-property`)

[frixaco]

Hi and thank you for the work on the plugin!

I'm getting this error when I try to lint the following code:

import './App.css'

function App(): JSX.Element {
  return (
    <div className="App">
      <iframe allowTransparency />
    </div>
  )
}

export default App

Any ideas why this is happening? Looking at source code, it seems like allowTransparency is a valid property.

Reproduction: https://codesandbox.io/s/react-check-eslint-5utwqm?file=/src/App.tsx

eslint-plugin-react: 7.31.10
ESLint: v7.32.0
React: v18 and v16.13.0

[ljharb]

http://help.dottoro.com/ljjvodln.php suggests that this property was only ever supported by IE < 9. Does this attribute seem to have a different effect for you in modern browsers?

[frixaco]

Sorry for very late reply. And no, I did not notice any effects on Chrome at least.

Closing the issue. I can't reproduce it anymore (so it's either was an issue with my types or have been fixed).