dateRange method Null safety

String? dateRange(
  1. String? value,
  2. {String? message,
  3. required dynamic min,
  4. required dynamic max}
)

Checks if the value is a valid date range.

Implementation

static String? dateRange(String? value, {String? message, required min, required max}) =>
    value == null || value.isEmpty || validations.isDateRange(value, min, max) == true ? null : message ?? 'Please enter a valid date range';