ESLint/TypeScript: Any way to mark the function as external/scope-less?

This piece of code passes every static analyzer, ESLint and TS because they don't know that the arrow function is run in a different context:
```js
import greenlet from 'greenlet'

const myFavNumber = 43;

const getFav = greenlet( async () => {
return myFavNumber
});
```

Are you aware of any way to mark the function in a way that linters/parsers know `myFavNumber` is not defined in the function?