Scala 3 has a compiler flag that makes `null` its separate type, making it completely null-safe. This would e.g. make ``` val a: String | Null = someLegacyJav

Scala 3 has a compiler flag that makes `null` its separate type, making it completely null-safe. This would e.g. make ``` val a: String | Null = someLegacyJavaCodeReturningNullableString() ``` and explicit null check would only make the non-nullable string continue onward.