validate method

@override ValidationResult<T?, E> validate(T? value)

Validates value and returns a ValidationResult.

Returns Valid if the value passes validation, or Invalid/InvalidAll if it fails.

Implementation

@override
ValidationResult<T?, E> validate(T? value) {
  if (value == null) {
    return const Valid(null);
  }
  final result = validator.validate(value);
  return switch (result) {
    Valid(:final value) => Valid(value),
    Invalid(:final error) => Invalid(error),
    InvalidAll(:final errors) => InvalidAll(errors),
  };
}