Bug: object-shorthand loses type parameters when auto-fixing

[aldeed]

Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Playground Link

https://typescript-eslint.io/play/#ts=5.4.5&fileType=.ts&code=MYewdgzgLgBFCm0DyAjAVjAvDA3gKBhgFsBPAWXigAsQATALhgB4AVAPgAoR1GWBKXlja4ChGACdKAV3FgY3NAG5RAXwA0eFcqA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQPYCMArRAYwBcBaZAC12jOoEMA7AE3TAG1xsdFpodSABoevSI3gB3RgE9Uo3hCxKcjAG64AlqwCiADwAO8LSS1kASojKxozAIIDcU1BjJxEY7AF8vAXR5fbyA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA&tokens=false

Repro Code

const testObj = {
  myMethod: <T>(obj: T): T => {
    return obj;
  },
};

ESLint Config

module.exports = {
  parser: "@typescript-eslint/parser",
  rules: {
    "object-shorthand": [
      "error",
      "always",
      { avoidExplicitReturnArrows: true },
    ],
  },
};

tsconfig

{
  "compilerOptions": {
    // ...
  }
}

Expected Result

The correct fixed code is:

const testObj = {
  myMethod<T>(obj: T): T {
    return obj;
  },
};

Actual Result

const testObj = {
  myMethod(obj: T): T {
    return obj;
  },
};

(<T> parameter is missing)

Additional Info

No response

[kirkwaiblinger]

@aldeed Yep! Thanks for the report!

[kirkwaiblinger]

@aldeed Yep! Thanks for the report!

Whoops! I spoke too soon. object-shorthand isn't actually a typescript-eslint rule (or corresponding extension rule), so this would be an issue to try to take up with eslint core first

[kirkwaiblinger]

Mentioning this issue may help you in making a report to eslint core: eslint/eslint#12260 🙂