P1B: Refactor (packages/tui/src/util/error.ts:97): Function with many returns (count = 6): errorFormat

### Uniqueness check

- [x] I have searched open issues and confirmed this **file + smell** is not already taken.

### Full path to the Typescript file

packages/tui/src/util/error.ts

### Function(s)/scope targeted

errorFormat

### Relevant Qlty output

```shell
packages/tui/src/util/error.ts
  
  97  Function with many returns (count = 6): errorFormat
```