empty_constructor_bodies

Empty constructor bodies should be written using a ';' rather than '{}'.

The analyzer produces this diagnostic when a constructor has an empty block body.

The following code produces this diagnostic because the constructor for C has a block body that is empty:

class C {
  C() {}
}

Replace the block with a semicolon:

class C {
  C();
}

Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.