Repro

{
  "rules": {
    "@typescript-eslint/naming-convention": [
      "error",
      {
        "selector": "default",
        "format": ["strictCamelCase"]
      }
    ]
  }
}

onComplete: (_id, name, responseJson) => {
    // Using name and responseJson, but not id.
}

Expected Result

No error on _id.

Actual Result

Error on _id.

Additional Info

As mentioned here with Brad's response here.

When using the noUnusedParameters compiler option, you have to use an underscore to suppress TypeScript's error. However, this shouldn't be done unless the parameter is actually unused.

Versions