P1B: Refactor (<full/path/to/digest.js:112>): Complex binary expression

### Uniqueness check

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

### Full path to the JavaScript file

src/user/digest.js

### Function(s)/scope targeted

Digest.send

### Relevant Qlty output

```shell
src/user/digest.js
 112  Complex binary expression
```