• 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
index.d.ts

declare namespace A {
  export interface A {
    foo: string;
  }
}

Expected Result

No warning or a warning if the namespace is never used.

Actual Result

Give me this warning: 'A' is defined but never used., on the namespace (even if it's used).

Versions

Config

parser: "@typescript-eslint/parser"

extends:
- eslint:recommended
- plugin:@typescript-eslint/recommended
- prettier/@typescript-eslint
- plugin:prettier/recommended

parserOptions:
  ecmaVersion: 2019
  sourceType: module
  project: ./tsconfig.json

rules:
  "@typescript-eslint/no-floating-promises": error

ignorePatterns:
- dist/