- `no-unused-vars` was commented out in favour of `@typescript-eslint/no-unused-vars`
    - `@typescript-eslint/camelcase` was deprecated and replaced with `@typescript-eslint/naming-convention`
    - `@typescript-eslint/no-floating-promises` is already enabled by default in `@typescript-eslint/recommended-requiring-type-checking`

    Code changes are all related to `@typescript-eslint/no-unsafe-return`, and fixes any issues under `lib/workers`