---
# System prepended metadata

title: Improve line items descriptions

---

# Improve line items descriptions

## Points

1. Get rid of regular expression in validation
2. Make more readable validation rules
3. Get possibility to add allowed locales

## Implementation

```typescript=
const allowedChars = ['\\', ':', ];
const allowedLocales = ['en-US', 'fr-FR'];

function checkLineItemDescriptionLanguage(value: string) {
    return allowedLocales
        .some(locale => isAlphanumeric(value, locale, allowedChars));
}
```

## Helpful links

- https://github.com/validatorjs/validator.js/blob/master/src/lib/isAlphanumeric.js#L4
- https://github.com/validatorjs/validator.js/blob/master/src/lib/alpha.js