Own iterable Class with FromIterableIListMixin not iterable in Web

[Surio89]

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Hi,

i created my own iterable class:

import 'package:fast_immutable_collections/fast_immutable_collections.dart';


class MyIter with FromIterableIListMixin<String> implements Iterable<String>{

  MyIter([Iterable<String> strings]) : _strings = IList(strings);

  final IList<String> _strings;

  @override
  IList<String> get iter => _strings;
}

if i use this class inside a for loop e.g.:

for (final String letter in _myIter){ string += letter; }

this iterable works well on android emulator but if i use chrome it throws:

"TypeError: this[_myIter] is not iterable"

only if i write: for (final String letter in _myIter.iter){ string += letter; }

it works. Did i do something wrong or is this a bug?

[psygo]

Strange. I'm not sure what's the culprit from a first look. It might not be anybody's fault though, because transpilation to JS assumes many unexpected limitations. Are you using Flutter or transpiling directly to JS from Dart?

[Surio89]

Im using Flutter 2.2.0

[marcglasberg]

Your MyIterclass explicitly implements Iterable, and it says it is not an iterable. It seems like a bug in Dart.

Could you please open a bug report in https://github.com/dart-lang/sdk/issues, post your code there, and link to this page?

Since it seems you have a reproducible code snippet, they can fix it.