dart_internal 0.1.2

  • README.md
  • Installing
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☠☠ Warning: This package is experimental and may be removed in a future version of Dart. ☠☠

This package is not intended for wide use. It provides a temporary API to solve the problem: "Given an object some generic type A, how do I construct an instance of generic type B with the same type argument(s)?"

This is necessary in a few rare places in order to migrate existing code to Dart 2's stronger type system. Eventually, the hope is to have direct language support for solving this problem but we don't have time to get that into 2.0, so this package is provided as a temporary workaround.

We will very likely remove support for this in a later version of Dart. Please avoid using this if you can. If you feel you do need to use it, please reach out to @munificent or @leafpetersen and let us know.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  dart_internal: ^0.1.2

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

Alternatively, your editor might support pub get or flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:dart_internal/extract_type_arguments.dart';
Version Uploaded Documentation Archive
0.1.2 Oct 15, 2018 Go to the documentation of dart_internal 0.1.2 Download dart_internal 0.1.2 archive
0.1.1 Mar 1, 2018 Go to the documentation of dart_internal 0.1.1 Download dart_internal 0.1.1 archive
0.1.0 Feb 28, 2018 Go to the documentation of dart_internal 0.1.0 Download dart_internal 0.1.0 archive
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We analyzed this package on Nov 14, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0
  • pana: 0.12.6


Detected platforms: Flutter, web, other

No platform restriction found in libraries.

Maintenance issues and suggestions

Maintain CHANGELOG.md. (-20 points)

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Update the homepage property: create a website about the package or use the source repository URL.

Maintain an example. (-10 points)

Create a short demo in the example/ directory to show how to use this package. Common file name patterns include: main.dart, example.dart or you could also use dart_internal.dart.

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Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.12.0 <2.2.0