no issue
- When items are parsed from CSV empty values were interpreted as empty strings - ''. Empty strings are always transformed into 'null' values in Ghost's model layer and are much more problematic to validate comparing to plain `null`. Specifically validation was imossible for 'format: date-time' with JSON schema validation through ajv when the value of date property was an empty string
- This behavior resemples one present in Ghost's model layer - 95880dddeb
- When testing performance overhead for this change did not spot any statistically significant change in performance (tested set was 50K rows)
