Function usesDeprecatedAssetsField

usesDeprecatedAssetsField(format: FormatAssetsInput): boolean
Check if format uses deprecated assets_required field (for migration warnings)
Parameters
- format: FormatAssetsInput
  A structural asset container
Returns boolean
true if using deprecated field, false if using new field or neither
Example
```
if (usesDeprecatedAssetsField(format)) {
  console.warn('Asset container uses deprecated assets_required field');
}
```
- Defined in src/lib/utils/format-assets.ts:182