Error when performing hot restart with flutter widget-preview start --web #166004
Description
When running flutter widget-preview start --web, the previewer loads and works as expected. However, an error is printed to the console.
Our hunch is that this issue occurs when attempting a hot restart while starting the previewer app.
Stacktrace:
DartError: TypeError: Instance of 'JSArray<dynamic>': type 'List<dynamic>' is not a subtype of type 'List<FontDownloadResult>'
dart:sdk_internal 3747:11 throw_
dart:sdk_internal 11389:15 _generalAsCheckImplementation
dart:sdk_internal 11339:24 _installSpecializedAsCheck
dart:sdk_internal 36406:59 [_completeWithValue]
dart:sdk_internal 35100:44 <fn>
dart:sdk_internal 43188:59 runUnary
dart:sdk_internal 35854:26 handleValue
dart:sdk_internal 36553:47 handleValueCallback
dart:sdk_internal 36591:15 _propagateToListeners
dart:sdk_internal 36410:21 [_completeWithValue]
dart:sdk_internal 43612:42 complete
dart:sdk_internal 44245:15 _asyncReturn
dart:sdk_internal 215850:28 <fn>
dart:sdk_internal 44277:13 <fn>
dart:sdk_internal 44287:7 <fn>
dart:sdk_internal 44254:42 <fn>
dart:sdk_internal 43188:59 runUnary
dart:sdk_internal 35854:26 handleValue
dart:sdk_internal 36553:47 handleValueCallback
dart:sdk_internal 36591:15 _propagateToListeners
dart:sdk_internal 36410:21 [_completeWithValue]
dart:sdk_internal 43612:42 complete
dart:sdk_internal 44245:15 _asyncReturn
dart:sdk_internal 229813:28 <fn>
dart:sdk_internal 44277:13 <fn>
dart:sdk_internal 44287:7 <fn>
dart:sdk_internal 44254:42 <fn>
dart:sdk_internal 43188:59 runUnary
dart:sdk_internal 35854:26 handleValue
dart:sdk_internal 36553:47 handleValueCallback
dart:sdk_internal 36591:15 _propagateToListeners
dart:sdk_internal 36410:21 [_completeWithValue]
dart:sdk_internal 36456:33 callback
dart:sdk_internal 44637:13 _microtaskLoop
dart:sdk_internal 44644:13 _startMicrotaskLoop
dart:sdk_internal 3793:46 tear
dart:sdk_internal 36894:9 <fn>
Would appreciate any insights into the root cause or potential fixes!