# TS6196: '…' is declared but never used.

> A type, interface, class or type parameter is declared but never used. Remove it or use it.

## What it means

With `noUnusedLocals` on, declarations that are only types (type aliases, interfaces) and
local classes that are never referenced are reported with this code; [TS6133](https://ts-r.dev/errors/TS6133/) covers
values that are never read. Unused type parameters are reported under `noUnusedParameters`.

## Example

```json
{ "compilerOptions": { "noUnusedLocals": true } }
```

```ts
interface Draft {
  title: string;
}
export const x = 1;
```

## How to fix

- Delete the unused declaration.
- If it's meant for other modules, export it.

Source: https://ts-r.dev/errors/TS6196/