dart - 如何在 DartPad 中导入库？

Question

我在 Dartpad 中写了下面的代码它返回给我这个错误:

Error compiling to JavaScript: unsupported import:

package:collection/collection.dart

import "package:collection/collection.dart";

main(List<String> args) {
  
  var data = [
    {"title": 'Avengers', "release_date": '10/01/2019'},
    {"title": 'Creed', "release_date": '10/01/2019'},
    {"title": 'Jumanji', "release_date": '30/10/2019'},
  ];
  
  var newMap = groupBy(data, (obj) => 
                       (obj as dynamic)['release_date']
                      );
  print(newMap);
  
}

有什么办法可以解决吗？

Answer 1

目前似乎不支持导入包。这里有一个开放的问题请求:
https://github.com/dart-lang/dart-pad/issues/901