Unknown node type ClassProperty.

[kurtextrem]

http://prntscr.com/g5ikj2

I hope you don't get overwhelmed by my eslintrc: https://pastebin.com/mtrYnfTV

[lukastaegert]

Hi, thanks for the issue.
Class properties are not implemented yet as they are not part of the current ECMAScript standard but I think it should not be too difficult.
However, I'm struggling a little with finding out which of your plugins adds this feature to ESLint. It would be really helpful if you could find out which one is necessary + what the code actually looks like that throws the error.

Thanks!

[kurtextrem]

The Code is the one in the screenshot:

class XYZ {
     addStorageListener = () => {
          chrome.storage.onChanged.addListener(this.storageListener)
     }
}

and I'm fairly sure it's enabled through one of the following:

"parser": "babel-eslint",
    "parserOptions": {
        "ecmaVersion": 8,
        "sourceType": "module",
        "ecmaFeatures": {
            "impliedStrict": true,
            "jsx": true,
            "experimentalObjectRestSpread": true,
            "allowImportExportEverywhere": true,
            "sourceType": "module"
        }
    },

(parser "babel-eslint" and "ecmaVersion": 8)

[lukastaegert]

Thanks! Yes, I think it es the babel-eslint parser. What babel plugins are you using?

[kurtextrem]

No plugins for the parser, just those settings. However I'm using a pre-release version. https://github.com/babel/babel-eslint/releases/tag/v8.0.0-alpha.17

[lukastaegert]

Ok, thanks for the feedback. A new release should be published any minute now. Note that there are probably a few more quirks of babel-eslint that are not properly supported yet, just file another issue if you stumble upon another one :)

[kurtextrem]

Working fine, thank you :)

Will report back if I find anything else.