[error] Couldn't infer type parameter 'T'.

Tried to infer '_ControllerEventSinkWrapper<dynamic>' for 'T' which doesn't work:
  Parameter 'action' declared as     '(T) → R'
                     but argument is '(EventSink<T>) → dynamic'.
The type '_ControllerEventSinkWrapper<dynamic>' was inferred from:
  Parameter 'argument' declared as     'T'
                       but argument is '_ControllerEventSinkWrapper<dynamic>'.

Consider passing explicit type argument(s) to the generic.

 (dart:async/stream.dart, line 1322, col 16)
[error] The argument type 'ZoneUnaryCallback(EventSink<T>) → dynamic' can't be assigned to the parameter type '(_ControllerEventSinkWrapper<dynamic>) → dynamic'. (dart:async/stream.dart, line 1322, col 32)
[error] Type parameter bound types must be instantiated. (dart:collection/queue.dart, line 97, col 32)
[error] Invalid override. The type of '_UnicodeSubsetEncoder.startChunkedConversion' ('(Sink<List<int>>) → StringConversionSink') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/ascii.dart, line 106, col 3)
[error] Invalid override. The type of '_UnicodeSubsetEncoder.bind' ('(Stream<String>) → Stream<List<int>>') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.bind' ('(dynamic) → dynamic'). (dart:convert/ascii.dart, line 114, col 3)
[error] Invalid override. The type of '_UnicodeSubsetDecoder.startChunkedConversion' ('(Sink<String>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/ascii.dart, line 219, col 3)
[error] Invalid override. The type of '_UnicodeSubsetDecoder.bind' ('(Stream<List<int>>) → Stream<String>') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.bind' ('(dynamic) → dynamic'). (dart:convert/ascii.dart, line 222, col 3)
[error] Invalid override. The type of 'AsciiDecoder.startChunkedConversion' ('(Sink<String>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/ascii.dart, line 235, col 3)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<List<int>>) → Stream<String>') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.bind' ('(dynamic) → dynamic'). (dart:convert/base64.dart, line 207, col 21)
[error] Invalid override. The type of 'Base64Encoder.startChunkedConversion' ('(Sink<String>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/base64.dart, line 222, col 3)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<String>) → Stream<List<int>>') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.bind' ('(dynamic) → dynamic'). (dart:convert/base64.dart, line 479, col 21)
[error] Invalid override. The type of 'Base64Decoder.startChunkedConversion' ('(Sink<List<int>>) → StringConversionSink') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/base64.dart, line 493, col 3)
[error] Invalid override. The type of 'ChunkedConverter.bind' ('(dynamic) → dynamic') isn't a subtype of 'Converter<S, T>.bind' ('(Stream<S>) → Stream<T>'). (dart:convert/chunked_conversion.dart, line 14, col 3)
[error] Invalid override. The type of 'ChunkedConverter.bind' ('(dynamic) → dynamic') isn't a subtype of 'StreamTransformer<S, T>.bind' ('(Stream<S>) → Stream<T>'). (dart:convert/chunked_conversion.dart, line 14, col 3)
[error] Invalid override. The type of 'ChunkedConverter.startChunkedConversion' ('(dynamic) → dynamic') isn't a subtype of 'Converter<S, T>.startChunkedConversion' ('(Sink<T>) → Sink<S>'). (dart:convert/chunked_conversion.dart, line 15, col 3)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<S>) → Stream<T>') isn't a subtype of 'ChunkedConverter<S, T, S, T>.bind' ('(dynamic) → dynamic'). (dart:convert/converter.dart, line 53, col 32)
[error] Invalid override. The type of '_FusedConverter.startChunkedConversion' ('(Sink<T>) → Sink<S>') isn't a subtype of 'ChunkedConverter<S, T, S, T>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/converter.dart, line 62, col 3)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<String>) → Stream<String>') isn't a subtype of 'ChunkedConverter<String, String, String, String>.bind' ('(dynamic) → dynamic'). (dart:convert/html_escape.dart, line 154, col 18)
[error] Invalid override. The type of 'HtmlEscape.startChunkedConversion' ('(Sink<String>) → StringConversionSink') isn't a subtype of 'ChunkedConverter<String, String, String, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/html_escape.dart, line 217, col 3)
[error] Invalid override. The type of 'JsonEncoder.startChunkedConversion' ('(Sink<String>) → ChunkedConversionSink<Object>') isn't a subtype of 'ChunkedConverter<Object, String, Object, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/json.dart, line 254, col 3)
[error] Invalid override. The type of 'JsonEncoder.bind' ('(Stream<Object>) → Stream<String>') isn't a subtype of 'ChunkedConverter<Object, String, Object, String>.bind' ('(dynamic) → dynamic'). (dart:convert/json.dart, line 268, col 3)
[error] Invalid override. The type of 'JsonUtf8Encoder.startChunkedConversion' ('(Sink<List<int>>) → ChunkedConversionSink<Object>') isn't a subtype of 'ChunkedConverter<Object, List<int>, Object, List<int>>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/json.dart, line 382, col 3)
[error] Invalid override. The type of 'JsonUtf8Encoder.bind' ('(Stream<Object>) → Stream<List<int>>') isn't a subtype of 'ChunkedConverter<Object, List<int>, Object, List<int>>.bind' ('(dynamic) → dynamic'). (dart:convert/json.dart, line 394, col 3)
[error] Invalid override. The type of 'JsonDecoder.startChunkedConversion' ('(Sink<Object>) → StringConversionSink') isn't a subtype of 'ChunkedConverter<String, Object, String, Object>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/json.dart, line 503, col 3)
[error] Invalid override. The type of 'JsonDecoder.bind' ('(Stream<String>) → Stream<Object>') isn't a subtype of 'ChunkedConverter<String, Object, String, Object>.bind' ('(dynamic) → dynamic'). (dart:convert/json.dart, line 508, col 3)
[error] Invalid override. The type of 'Latin1Decoder.startChunkedConversion' ('(Sink<String>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/latin1.dart, line 100, col 3)
[error] Invalid override. The type of 'Utf8Encoder.startChunkedConversion' ('(Sink<List<int>>) → StringConversionSink') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/utf.dart, line 121, col 3)
[error] Invalid override. The type of 'Utf8Encoder.bind' ('(Stream<String>) → Stream<List<int>>') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.bind' ('(dynamic) → dynamic'). (dart:convert/utf.dart, line 129, col 3)
[error] Invalid override. The type of 'Utf8Decoder.startChunkedConversion' ('(Sink<String>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:convert/utf.dart, line 357, col 3)
[error] Invalid override. The type of 'Utf8Decoder.bind' ('(Stream<List<int>>) → Stream<String>') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.bind' ('(dynamic) → dynamic'). (dart:convert/utf.dart, line 368, col 3)
[error] Only redirecting factory constructors can be declared to be 'const'. (dart:core/bool.dart, line 41, col 9)
[error] Const constructors can't throw exceptions. (dart:core/bool.dart, line 42, col 5)
[error] Only redirecting factory constructors can be declared to be 'const'. (dart:core/int.dart, line 33, col 9)
[error] Const constructors can't throw exceptions. (dart:core/int.dart, line 34, col 5)
[error] Annotation must be either a const variable reference or const constructor invocation. (dart:core/stacktrace.dart, line 43, col 3)
[error] Only redirecting factory constructors can be declared to be 'const'. (dart:core/string.dart, line 156, col 9)
[error] Const constructors can't throw exceptions. (dart:core/string.dart, line 157, col 5)
[error] Annotation must be either a const variable reference or const constructor invocation. (dart:developer, line 39, col 1)
[error] The getter 'value' isn't defined for the class 'num'. (dart:html, line 40493, col 21)
[error] A value of type 'Dimension' can't be assigned to a variable of type 'num'. (dart:html, line 40493, col 44)
[error] The getter 'value' isn't defined for the class 'num'. (dart:html, line 40513, col 20)
[error] A value of type 'Dimension' can't be assigned to a variable of type 'num'. (dart:html, line 40513, col 42)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<List<int>>) → Stream<List<int>>') isn't a subtype of 'ChunkedConverter<List<int>, List<int>, List<int>, List<int>>.bind' ('(dynamic) → dynamic'). (dart:io/data_transformer.dart, line 295, col 19)
[error] Invalid override. The type of 'ZLibEncoder.startChunkedConversion' ('(Sink<List<int>>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, List<int>, List<int>, List<int>>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:io/data_transformer.dart, line 388, col 3)
[error] The argument type '(RandomAccessFile) → Future<RandomAccessFile>' can't be assigned to the parameter type '(RandomAccessFile) → FutureOr<File>'. (dart:io/file_impl.dart, line 202, col 30)
[error] The return type 'Future<Object>' isn't a 'FutureOr<File>', as defined by the method ''. (dart:io/file_impl.dart, line 591, col 14)
[error] Undefined name 'lineMode'. (dart:io/stdio.dart, line 57, col 10)
[error] The name 'echoMode=' is already defined. (dart:io/stdio.dart, line 122, col 12)
[error] The name 'lineMode=' is already defined. (dart:io/stdio.dart, line 143, col 12)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<String>) → Stream<List<int>>') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.bind' ('(dynamic) → dynamic'). (dart:io/string_transformer.dart, line 45, col 31)
[error] Invalid override. The type of '_WindowsCodePageEncoder.startChunkedConversion' ('(Sink<List<int>>) → StringConversionSink') isn't a subtype of 'ChunkedConverter<String, List<int>, String, List<int>>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:io/string_transformer.dart, line 60, col 3)
[error] Base class introduces an invalid override. The type of 'Converter.bind' ('(Stream<List<int>>) → Stream<String>') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.bind' ('(dynamic) → dynamic'). (dart:io/string_transformer.dart, line 98, col 31)
[error] Invalid override. The type of '_WindowsCodePageDecoder.startChunkedConversion' ('(Sink<String>) → ByteConversionSink') isn't a subtype of 'ChunkedConverter<List<int>, String, List<int>, String>.startChunkedConversion' ('(dynamic) → dynamic'). (dart:io/string_transformer.dart, line 109, col 3)
[error] The getter 'packagesBase' isn't defined for the class 'IsolateNatives'. (dart:isolate, line 716, col 61)
[error] Invalid override. The type of 'JsArray.[]=' ('(Object, E) → void') isn't a subtype of 'JsObject.[]=' ('(Object, dynamic) → dynamic'). (dart:js, line 370, col 3)
[error] The argument type 'List' can't be assigned to the parameter type 'Iterable<Null>'. (dart:js_util, line 112, col 29)
[error] The return type 'double' isn't a 'T', as defined by the method 'min'. (dart:math, line 90, col 16)
[error] The return type 'double' isn't a 'T', as defined by the method 'max'. (dart:math, line 125, col 16)
[warning] The final variable 'origin' must be initialized. (dart:html, line 187, col 3)
[warning] The final variable 'origin' must be initialized. (dart:html, line 853, col 3)
[warning] The final variables 'form', 'labels' and '3' more must be initialized. (dart:html, line 1775, col 3)
[warning] The final variable 'options' must be initialized. (dart:html, line 8922, col 3)
[warning] The final variables '_attributes', '_childElementCount' and '16' more must be initialized. (dart:html, line 13164, col 3)
[warning] The final variables 'elements', 'form' and '4' more must be initialized. (dart:html, line 16932, col 3)
[warning] The final variable 'length' must be initialized. (dart:html, line 17898, col 3)
[warning] The final variables '_get_contentWindow' and 'sandbox' must be initialized. (dart:html, line 20564, col 3)
[warning] The final variables 'complete', 'currentSrc' and '2' more must be initialized. (dart:html, line 20703, col 3)
[warning] The final variables '_get_valueAsDate', 'entries' and '6' more must be initialized. (dart:html, line 20860, col 3)
[warning] The final variables 'form', 'labels' and '4' more must be initialized. (dart:html, line 21927, col 3)
[warning] The final variables 'control' and 'form' must be initialized. (dart:html, line 22042, col 3)
[warning] The final variable 'form' must be initialized. (dart:html, line 22077, col 3)
[warning] The final variables 'import', 'sheet' and '1' more must be initialized. (dart:html, line 22104, col 3)
[warning] The final variable 'areas' must be initialized. (dart:html, line 22256, col 3)
[warning] The final variables 'audioDecodedByteCount', 'audioTracks' and '16' more must be initialized. (dart:html, line 22492, col 3)
[warning] The final variable 'labels' must be initialized. (dart:html, line 24089, col 3)
[warning] The final variables '_localName', '_namespaceUri' and '12' more must be initialized. (dart:html, line 25631, col 3)
[warning] The final variables 'form', 'validationMessage' and '2' more must be initialized. (dart:html, line 26532, col 3)
[warning] The final variables 'form' and 'index' must be initialized. (dart:html, line 26678, col 3)
[warning] The final variables 'form', 'htmlFor' and '5' more must be initialized. (dart:html, line 26732, col 3)
[warning] The final variables 'labels' and 'position' must be initialized. (dart:html, line 28207, col 3)
[warning] The final variables 'form', 'labels' and '4' more must be initialized. (dart:html, line 30128, col 3)
[warning] The final variable 'sheet' must be initialized. (dart:html, line 32489, col 3)
[warning] The final variable 'cellIndex' must be initialized. (dart:html, line 32719, col 3)
[warning] The final variables '_rows' and '_tBodies' must be initialized. (dart:html, line 32830, col 3)
[warning] The final variables '_cells', 'rowIndex' and '1' more must be initialized. (dart:html, line 32943, col 3)
[warning] The final variable '_rows' must be initialized. (dart:html, line 33012, col 3)
[warning] The final variable 'content' must be initialized. (dart:html, line 33056, col 3)
[warning] The final variables 'form', 'labels' and '5' more must be initialized. (dart:html, line 33132, col 3)
[warning] The final variables 'readyState' and 'track' must be initialized. (dart:html, line 34173, col 3)
[warning] The final variables 'decodedFrameCount', 'droppedFrameCount' and '2' more must be initialized. (dart:html, line 34889, col 3)
[warning] The final variable '_isTranslatable' must be initialized. (dart:io/stdio.dart, line 327, col 3)
[warning] The final variables 'href' and 'target' must be initialized. (dart:svg, line 56, col 3)
[warning] The final variables 'requiredExtensions', 'requiredFeatures' and '2' more must be initialized. (dart:svg, line 512, col 3)
[warning] The final variables 'cx', 'cy' and '1' more must be initialized. (dart:svg, line 587, col 3)
[warning] The final variable 'clipPathUnits' must be initialized. (dart:svg, line 624, col 3)
[warning] The final variables 'cx', 'cy' and '2' more must be initialized. (dart:svg, line 723, col 3)
[warning] The final variables 'height', 'in1' and '6' more must be initialized. (dart:svg, line 769, col 3)
[warning] The final variables 'height', 'in1' and '6' more must be initialized. (dart:svg, line 862, col 3)
[warning] The final variables 'height', 'in1' and '4' more must be initialized. (dart:svg, line 951, col 3)
[warning] The final variables 'height', 'in1' and '10' more must be initialized. (dart:svg, line 1003, col 3)
[warning] The final variables 'bias', 'divisor' and '15' more must be initialized. (dart:svg, line 1111, col 3)
[warning] The final variables 'diffuseConstant', 'height' and '8' more must be initialized. (dart:svg, line 1232, col 3)
[warning] The final variables 'height', 'in1' and '8' more must be initialized. (dart:svg, line 1309, col 3)
[warning] The final variables 'azimuth' and 'elevation' must be initialized. (dart:svg, line 1405, col 3)
[warning] The final variables 'height', 'result' and '3' more must be initialized. (dart:svg, line 1448, col 3)
[warning] The final variables 'height', 'in1' and '6' more must be initialized. (dart:svg, line 1641, col 3)
[warning] The final variables 'height', 'href' and '5' more must be initialized. (dart:svg, line 1714, col 3)
[warning] The final variables 'height', 'result' and '3' more must be initialized. (dart:svg, line 1781, col 3)
[warning] The final variable 'in1' must be initialized. (dart:svg, line 1837, col 3)
[warning] The final variables 'height', 'in1' and '7' more must be initialized. (dart:svg, line 1871, col 3)
[warning] The final variables 'dx', 'dy' and '6' more must be initialized. (dart:svg, line 1951, col 3)
[warning] The final variables 'x', 'y' and '1' more must be initialized. (dart:svg, line 2019, col 3)
[warning] The final variables 'height', 'in1' and '9' more must be initialized. (dart:svg, line 2066, col 3)
[warning] The final variables 'limitingConeAngle', 'pointsAtX' and '6' more must be initialized. (dart:svg, line 2148, col 3)
[warning] The final variables 'height', 'in1' and '4' more must be initialized. (dart:svg, line 2215, col 3)
[warning] The final variables 'baseFrequencyX', 'baseFrequencyY' and '9' more must be initialized. (dart:svg, line 2276, col 3)
[warning] The final variables 'filterUnits', 'height' and '5' more must be initialized. (dart:svg, line 2380, col 3)
[warning] The final variables 'height', 'width' and '2' more must be initialized. (dart:svg, line 2483, col 3)
[warning] The final variables 'farthestViewportElement', 'nearestViewportElement' and '4' more must be initialized. (dart:svg, line 2578, col 3)
[warning] The final variables 'height', 'href' and '4' more must be initialized. (dart:svg, line 2662, col 3)
[warning] The final variables 'x1', 'x2' and '2' more must be initialized. (dart:svg, line 2896, col 3)
[warning] The final variables 'x1', 'x2' and '2' more must be initialized. (dart:svg, line 2937, col 3)
[warning] The final variables 'markerHeight', 'markerUnits' and '7' more must be initialized. (dart:svg, line 2978, col 3)
[warning] The final variables 'height', 'maskContentUnits' and '7' more must be initialized. (dart:svg, line 3073, col 3)
[warning] The final variables 'animatedNormalizedPathSegList', 'animatedPathSegList' and '3' more must be initialized. (dart:svg, line 3361, col 3)
[warning] The final variables 'height', 'href' and '11' more must be initialized. (dart:svg, line 4225, col 3)
[warning] The final variables 'animatedPoints' and 'points' must be initialized. (dart:svg, line 4394, col 3)
[warning] The final variables 'animatedPoints' and 'points' must be initialized. (dart:svg, line 4427, col 3)
[warning] The final variables 'cx', 'cy' and '4' more must be initialized. (dart:svg, line 4538, col 3)
[warning] The final variables 'height', 'rx' and '4' more must be initialized. (dart:svg, line 4617, col 3)
[warning] The final variable 'href' must be initialized. (dart:svg, line 4666, col 3)
[warning] The final variable 'gradientOffset' must be initialized. (dart:svg, line 4734, col 3)
[warning] The final variable 'sheet' must be initialized. (dart:svg, line 4866, col 3)
[warning] The final variables 'ownerSvgElement' and 'viewportElement' must be initialized. (dart:svg, line 5354, col 3)
[warning] The final variables 'currentTranslate', 'currentView' and '12' more must be initialized. (dart:svg, line 5676, col 3)
[warning] The final variables 'preserveAspectRatio' and 'viewBox' must be initialized. (dart:svg, line 5899, col 3)
[warning] The final variables 'lengthAdjust' and 'textLength' must be initialized. (dart:svg, line 5975, col 3)
[warning] The final variables 'href', 'method' and '2' more must be initialized. (dart:svg, line 6076, col 3)
[warning] The final variables 'dx', 'dy' and '3' more must be initialized. (dart:svg, line 6138, col 3)
[warning] The final variables 'height', 'href' and '3' more must be initialized. (dart:svg, line 6437, col 3)
[warning] The final variables 'preserveAspectRatio', 'viewBox' and '1' more must be initialized. (dart:svg, line 6484, col 3)
[warning] The final variables 'gradientTransform', 'gradientUnits' and '2' more must be initialized. (dart:svg, line 6642, col 3)