@immutable should be moved to flutter sdk?

[stephane-archer]

Use case

import 'package:flutter/material.dart';

@immutable
class Resolution {
  final int width;
  final int height;
  const Resolution(this.width, this.height);
  double get aspectRatio {
    return width / height;
  }
}

immutable is not related to material app. I think the immutable annotation should be located somewhere else. Maybe it can be part of the dart SDK? I don't see how this is Flutter-specific.

Proposal

move @immutable

flutter/flutter#160820

[dart-github-bot]

Summary: User suggests moving the @immutable annotation from the Flutter SDK to the Dart SDK, arguing it's not Flutter-specific and belongs in the core language.

[bwilkerson]

The annotation is defined in package:meta/meta.dart, which is in the sdk repository. It is exported by package:flutter/foundation.dart.