dart-lang/dart-web-components — pull request #84 by sqs (2012-10-12 15:18:20+00:00)
Title: In ListEmitter.emitInserted, check that loopItems is Iterable, not just non-null

Per jmesserly at https://github.com/dart-lang/dart-web-components/pull/75#discussion_r1797896.

The tests pass (except unrelated dart_analyzer failures), and I manually verified that it works when using dart2js.