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=4.9.3&sourceType=module&code=C4TwDgpgBACgTgezAZygXigbwFBSgenygGME44JjgoA7AQwFsJlcoEaAxBBACgEoAXFABuCAJYATANyt2AITpwh-dAD4R46dlaEoYmqXKVq9JizwALOjQkAbCF16CNkmZet2ICpVBVp1oq7YAL5SQA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6JgQwFtmBzWsgHsmAN0QtKw9GADa4bDkTRog6JAA08hVgXZIyREjL5V0yEVIBZRPgAWggCYatuyMWiIAZpQAe0ubquUi4KALqagTieqlwc+P6QAMr4VMYAChzIZBzwAMKZiJChIWAAvi7FEOWlQA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA

Repro Code

type Props = {
  // correct names
  onFoo(): void;
  onBar: () => void;

  // incorrect names
  handleFoo(): void;
  handleBar: () => void;
};

ESLint Config

module.exports = {
  parser: "@typescript-eslint/parser",
  rules: {
    "@typescript-eslint/naming-convention": [
      "error",
      {
        "selector": "typeMethod",
        "prefix": [
          "on"
        ],
        "format": ["StrictPascalCase"]
      }
    ]
  },
};

tsconfig

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

Expected Result

Both handleFoo and handleBar should be marked as errors.

Actual Result

Only handleFoo is marked as an error.

Additional Info

The typeMethod selector should pick up every possible method syntax similarly to the objectLiteralMethod selector. Right now only TSMethodSignature nodes are picked up by the typeMethod selector, whereas it should also pickup TSPropertySignature nodes with typeAnnotation of TSFunctionType.

If you confirm this is a bug, I would be more than happy to create a PR with the fix 😄

References in code:

• place where every non-computed TSPropertySignature is mapped as typeProperty selector: https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/src/rules/naming-convention.ts#L397
• place where every non-computed typeMethod selector is mapped: https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/src/rules/naming-convention.ts#L463