no-unused-vars false positive with typescript types

[taylankasap]

There are too many tools in the process so I'm not even sure which one's job this is. I'm just opening issue here for now. Please point me in the right direction. Thanks!

Typescript file (minimal example)

import Rubik from './Rubik';

export default class Arranger {
  private readonly rubik: Rubik;
}

This is the false positive

error  'Rubik' is defined but never used  no-unused-vars

.eslintrc.json

{
  "parser": "babel-eslint",
  "rules": {
    "no-unused-vars": ["error"]
  }
}

babel.config.json

{
  "presets": [
    "@babel/preset-env",
    "@babel/preset-typescript"
  ],
  "plugins": [
    "@babel/proposal-class-properties"
  ]
}

package.json

{
  "devDependencies": {
    "@babel/plugin-proposal-class-properties": "^7.8.3",
    "@babel/preset-typescript": "^7.9.0",
    "@symfony/webpack-encore": "^0.30.0",
    "babel-eslint": "^11.0.0-beta.2",
    "concurrently": "^5.2.0",
    "core-js": "^3.0.0",
    "eslint": "^7.0.0",
    "eslint-config-airbnb": "^18.1.0",
    "eslint-loader": "^4.0.2",
    "eslint-plugin-import": "^2.20.2",
    "eslint-plugin-tsdoc": "^0.2.5",
    "regenerator-runtime": "^0.13.2",
    "typescript": "^3.9.3",
    "webpack-notifier": "^1.6.0"
  },
  // ...
}

[balasan]

Can confirm - I switched to 11.0.0-beta.2 to fix the readonly errors and ran into this one.

[kaicataldo]

Thank you for the PR. Now that @babel/eslint-parser has been released, we are making this repository read-only. If this is a change you would still like to advocate for, please reopen this in the babel/babel monorepo.