Take TypeScript definition files (.d.ts) from DefinitelyTyped and create Dart JS interop facades with this script. Well, at least try to. It's tricky as hell. Zillions of edge cases. But at least you don't have to do everything yourself.

So far, the converter has been tested on and optimized for the following javascript frameworks

• ChartJS
• THREE.js
• BabylonJS

While Dart Analyzer reports the resulting library as free of errors, nothing except what's needed by the demos has been tested. The library will only be lightly maintained. I don't have time for this :)

• Dart SDK 1.13 or greater on your path

$> pub global activate --source git https://github.com/blockforest/dts-converter

Two modes are supported by the converter.

This way, you create a package to be reused, committed to github, uploaded to pub.

$> mkdir fancy_package
$> cd fancy_package
$> dts_converter --source /path/to/sources --source-library Chart --create-project

This way, you create a package inside of your existing Dart project.

$> cd fancy_existing_project
$> dts_converter --source /path/to/sources --source-library Chart

The newly generated internal package will be added to your root pubspec. If this doesn't make any sense, use Mode 1.

# --source          The path (relative or absolute) to the Typescript .d.ts source file(s) to convert.
# --source-library  The name of the javascript library to convert.
# --target          The path (relative!) the generated Dart library will be written to (defaults to 'lib')
# --target-library  The name of the dart library to be generated (defaults to same name as defined in --target).
# --create-project  Create full dart project with pubspec and library file (optional)

You can find a conversion result here https://github.com/blockforest/dts-converter/blob/master/test/chart-generated/chart/chart.d.dart It was generated from this source: https://github.com/blockforest/dts-converter/blob/master/test/chart/chart.d.ts

• Check out the git source of this project

• Open Terminal

• cd to the root of this project

  $> cd dts-converter $> dart bin/dts_converter.dart --source test/chart --target test/chart-generated --source-library Chart --target-library chart

• Marvel at the result

Please file reports on the GitHub Issue Tracker.

We're in beta!

• Cover more edge cases, f.ex. as seen in THREE.js https://github.com/DefinitelyTyped/DefinitelyTyped/blob/cc3d223a946f661eff871787edeb0fcb8f0db156/threejs/three.d.ts
• Make the converter work with 'export module' sources.