• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have read the FAQ and my problem is not listed.

Repro

Minimal repo: arimah/typescript-eslint-no-unused-vars-issue-1

{
  "parserOptions": {
    "sourceType": "module"
  },
  "rules": {
    "@typescript-eslint/no-unused-vars": "error"
  }
}

function foo<T>(x: TemplateStringsArray, ...y: T[]) {
  // (irrelevant code to get rid of unused variable warnings)
  return [x,  y];
}

interface FalsePositive { }
//        ^^^^^^^^^^^^^ @typescript-eslint/no-unused-vars - false positive

foo<FalsePositive>``;

Expected Result

No lint error: the type is used as a template string type argument.

Actual Result

6:11  error  'FalsePositive' is defined but never used  @typescript-eslint/no-unused-vars

Additional Info

False positive only occurs with "sourceType": "module". With that option unset, I can't reproduce the bug, even if I introduce an explicit export or import into the code.

Versions