Update to .NET 7 to enable the required keyword.

[gumbarros]

[Pietervdw]

Thank you for logging the issue. How would you like the generated dart code when using the required keyword?

For example, the following class. What should it's dart equivalent look like?

public class Person
{
    public Person() { }

    [SetsRequiredMembers]
    public Person(string firstName, string lastName) =>
        (FirstName, LastName) = (firstName, lastName);

    public required string FirstName { get; init; }
    public required string LastName { get; init; }

    public int? Age { get; set; }
}

[gumbarros]

Hello @Pietervdw, thanks for responding. A required equivalent in Dart would require Dart have object initializers like C#.
The equivalent code in Dart would be:

class Person {
  final String firstName;
  final String lastName;
  int? age;

  Person({required this.firstName, required this.lastName, this.age});
}

My suggestion to upgrade to .NET 7 would just be to avoid errors when pasting classes that have the required keyword. You can also install PolySharp in your project to enable the required keyword.