Work around dart:html inconsistency

tool/sdk_expected_errors.txt

Index: tool/sdk_expected_errors.txt
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index 59db1270c4cb0a7eee7485653db5d9ed722280f2..56d79ff3a9caa09f504c61ac8942b390d7e8f42a 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -377,91 +377,91 @@ severe: [UNDEFINED_METHOD] The method '_initKeyboardEvent' is not defined for th
 severe: [UNDEFINED_METHOD] The method '_initMessageEvent' is not defined for the class 'Event'. (dart:html, line 22233, col 11)
 severe: [UNDEFINED_METHOD] The method '_initMouseEvent' is not defined for the class 'Event'. (dart:html, line 22890, col 11)
 severe: [UNDEFINED_METHOD] The method 'convertDartClosureToJS' is not defined for the class 'MutationObserver'. (dart:html, line 23178, col 9)
-severe: [ARGUMENT_TYPE_NOT_ASSIGNABLE] The argument type 'List<Element>' cannot be assigned to the parameter type 'Iterable<OptionElement>'. (dart:html, line 27302, col 37)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of SharedWorker.onError (() → Stream<Event>) is not a subtype of AbstractWorker.onError (() → Stream<ErrorEvent>). (dart:html, line 27862, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.containsValue ((String) → bool) is not a subtype of Map<String, String>.containsValue ((Object) → bool). (dart:html, line 28874, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 28876, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 28878, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 28887, col 3)
-severe: [UNDEFINED_METHOD] The method '_initStorageEvent' is not defined for the class 'Event'. (dart:html, line 28994, col 7)
-severe: [UNDEFINED_METHOD] The method '_initTextEvent' is not defined for the class 'Event'. (dart:html, line 29805, col 7)
-severe: [UNDEFINED_METHOD] The method '_initTouchEvent' is not defined for the class 'Event'. (dart:html, line 30465, col 7)
-severe: [UNDEFINED_METHOD] The method '_initUIEvent' is not defined for the class 'Event'. (dart:html, line 30795, col 7)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Window.postMessage ((dynamic, String, [List<MessagePort>]) → void) is not a subtype of WindowBase.postMessage ((dynamic, String, [List<dynamic>]) → void). (dart:html, line 32988, col 3)
-severe: [RETURN_OF_INVALID_TYPE] The return type 'String' is not a 'void', as defined by the method ''. (dart:html, line 33900, col 14)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Worker.onError (() → Stream<Event>) is not a subtype of AbstractWorker.onError (() → Stream<ErrorEvent>). (dart:html, line 34095, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration Node.text cannot be overridden in _Attr. (dart:html, line 34597, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration Node.text= cannot be overridden in _Attr. (dart:html, line 34599, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.height cannot be overridden in _DomRect. (dart:html, line 35143, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.height (() → num) is not a subtype of DomRectReadOnly.height (() → double). (dart:html, line 35143, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.width cannot be overridden in _DomRect. (dart:html, line 35150, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.width (() → num) is not a subtype of DomRectReadOnly.width (() → double). (dart:html, line 35150, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.x cannot be overridden in _DomRect. (dart:html, line 35157, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.x (() → num) is not a subtype of DomRectReadOnly.x (() → double). (dart:html, line 35157, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.y cannot be overridden in _DomRect. (dart:html, line 35164, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.y (() → num) is not a subtype of DomRectReadOnly.y (() → double). (dart:html, line 35164, col 3)
-severe: [UNDEFINED_METHOD] The method '_initMutationEvent' is not defined for the class 'Event'. (dart:html, line 35455, col 11)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _AttributeMap.containsValue ((String) → bool) is not a subtype of Map<String, String>.containsValue ((Object) → bool). (dart:html, line 36034, col 3)
-severe: [UNDEFINED_GETTER] The getter 'name' is not defined for the class 'Node'. (dart:html, line 36069, col 32)
-severe: [UNDEFINED_GETTER] The getter 'value' is not defined for the class 'Node'. (dart:html, line 36081, col 34)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementAttributeMap.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 36112, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementAttributeMap.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 36116, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementAttributeMap.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 36124, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _NamespacedAttributeMap.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 36149, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _NamespacedAttributeMap.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 36153, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _NamespacedAttributeMap.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 36161, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.containsValue ((String) → bool) is not a subtype of Map<String, String>.containsValue ((Object) → bool). (dart:html, line 36195, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 36197, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 36199, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 36208, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of CssClassSet.contains ((String) → bool) is not a subtype of Set<String>.contains ((Object) → bool). (dart:html, line 36521, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of CssClassSet.removeAll ((Iterable<String>) → void) is not a subtype of Set<String>.removeAll ((Iterable<Object>) → void). (dart:html, line 36573, col 3)
-severe: [UNDEFINED_GETTER] The getter 'value' is not defined for the class 'num'. (dart:html, line 36620, col 21)
-severe: [INVALID_ASSIGNMENT] A value of type 'Dimension' cannot be assigned to a variable of type 'num' (dart:html, line 36620, col 44)
-severe: [UNDEFINED_GETTER] The getter 'value' is not defined for the class 'num'. (dart:html, line 36638, col 20)
-severe: [INVALID_ASSIGNMENT] A value of type 'Dimension' cannot be assigned to a variable of type 'num' (dart:html, line 36638, col 42)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration MutableRectangle<num>.left cannot be overridden in CssRect. (dart:html, line 36753, col 3)
-severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration MutableRectangle<num>.top cannot be overridden in CssRect. (dart:html, line 36755, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementCssClassSet.removeAll ((Iterable<String>) → void) is not a subtype of CssClassSetImpl.removeAll ((Iterable<Object>) → void). (dart:html, line 36972, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementCssClassSet.retainAll ((Iterable<String>) → void) is not a subtype of CssClassSetImpl.retainAll ((Iterable<Object>) → void). (dart:html, line 36976, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementCssClassSet.retainAll ((Iterable<String>) → void) is not a subtype of Set<String>.retainAll ((Iterable<Object>) → void). (dart:html, line 36976, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _EventStream.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37326, col 3)
-severe: [NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_ONE] Missing concrete implementation of 'Stream.asBroadcastStream' (dart:html, line 37345, col 7)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Base class introduces an invalid override. The type of _EventStream.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37345, col 48)
-severe: [UNDEFINED_METHOD] The method 'matchesWithAncestors' is not defined for the class 'EventTarget'. (dart:html, line 37351, col 31)
-severe: [UNDEFINED_METHOD] The method 'matchesWithAncestors' is not defined for the class 'EventTarget'. (dart:html, line 37375, col 31)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementListEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37401, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementListEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37401, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _CustomEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37517, col 3)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _CustomEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37517, col 3)
-severe: [NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_ONE] Missing concrete implementation of 'Stream.asBroadcastStream' (dart:html, line 37528, col 7)
-severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Base class introduces an invalid override. The type of _CustomEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<KeyEvent>) is not a subtype of Stream<KeyEvent>.asBroadcastStream (({onListen: (StreamSubscription<KeyEvent>) → void, onCancel: (StreamSubscription<KeyEvent>) → void}) → Stream<KeyEvent>). (dart:html, line 37528, col 33)
-severe: [RETURN_OF_INVALID_TYPE] The return type '_EventStream<Event>' is not a 'Stream<T>', as defined by the method 'forTarget'. (dart:html, line 37609, col 12)
-severe: [RETURN_OF_INVALID_TYPE] The return type '_ElementEventStreamImpl<Event>' is not a 'ElementStream<T>', as defined by the method 'forElement'. (dart:html, line 37613, col 12)
-severe: [RETURN_OF_INVALID_TYPE] The return type '_ElementListEventStreamImpl<Event>' is not a 'ElementStream<T>', as defined by the method '_forElementList'. (dart:html, line 37618, col 12)
-severe: [STRONG_MODE_INVALID_SUPER_INVOCATION] super call must be last in an initializer list (see https://goo.gl/EY6hDP): super(_EVENT_TYPE) (dart:html, line 39056, col 38)
-severe: [UNDEFINED_GETTER] The getter '_shadowCharCode' is not defined for the class 'KeyboardEvent'. (dart:html, line 39089, col 21)
-severe: [UNDEFINED_GETTER] The getter '_shadowCharCode' is not defined for the class 'KeyboardEvent'. (dart:html, line 39094, col 47)
-severe: [STRONG_MODE_INVALID_SUPER_INVOCATION] super call must be last in an initializer list (see https://goo.gl/EY6hDP): super(uriPolicy, allowedElements: allowedElements, allowedAttributes: allowedAttributes, allowedUriAttributes: allowedUriAttributes) (dart:html, line 39752, col 7)
-severe: [STRONG_MODE_INVALID_SUPER_INVOCATION] super call must be last in an initializer list (see https://goo.gl/EY6hDP): super(null, allowedElements: ['TEMPLATE'], allowedAttributes: _TEMPLATE_ATTRS.map((attr) => 'TEMPLATE::$attr')) (dart:html, line 39789, col 7)
-severe: [UNDEFINED_FUNCTION] The function 'setNativeSubclassDispatchRecord' is not defined. (dart:html, line 40082, col 5)
-severe: [UNDEFINED_FUNCTION] The function 'convertDartClosureToJS' is not defined. (dart:html, line 40110, col 7)
-severe: [UNDEFINED_FUNCTION] The function 'convertDartClosureToJS' is not defined. (dart:html, line 40120, col 7)
-severe: [UNDEFINED_FUNCTION] The function 'findInterceptorConstructorForType' is not defined. (dart:html, line 40139, col 26)
-severe: [UNDEFINED_FUNCTION] The function 'findConstructorForNativeSubclassType' is not defined. (dart:html, line 40146, col 21)
-severe: [UNDEFINED_FUNCTION] The function 'getNativeInterceptor' is not defined. (dart:html, line 40153, col 3)
-severe: [UNDEFINED_FUNCTION] The function 'findDispatchTagForInterceptorClass' is not defined. (dart:html, line 40155, col 26)
-severe: [UNDEFINED_FUNCTION] The function 'setNativeSubclassDispatchRecord' is not defined. (dart:html, line 40189, col 3)
-severe: [UNDEFINED_METHOD] The method 'findInterceptorConstructorForType' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40212, col 28)
-severe: [UNDEFINED_METHOD] The method 'findConstructorForNativeSubclassType' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40217, col 20)
-severe: [UNDEFINED_METHOD] The method 'getNativeInterceptor' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40224, col 5)
-severe: [UNDEFINED_METHOD] The method 'findDispatchTagForInterceptorClass' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40226, col 25)
-severe: [UNDEFINED_METHOD] The method 'setNativeSubclassDispatchRecord' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40256, col 5)
-severe: [UNDEFINED_METHOD] The method 'makeLeafDispatchRecord' is not defined for the class 'KeyEvent'. (dart:html, line 40461, col 12)
-severe: [UNDEFINED_METHOD] The method 'setDispatchProperty' is not defined for the class 'KeyEvent'. (dart:html, line 40531, col 5)
-severe: [UNDEFINED_METHOD] The method 'matches' is not defined for the class 'EventTarget'. (dart:html, line 40707, col 18)
-severe: [UNDEFINED_GETTER] The getter 'parent' is not defined for the class 'EventTarget'. (dart:html, line 40708, col 23)
-severe: [UNDEFINED_GETTER] The getter 'parent' is not defined for the class 'EventTarget'. (dart:html, line 40709, col 56)
+severe: [ARGUMENT_TYPE_NOT_ASSIGNABLE] The argument type 'List<Element>' cannot be assigned to the parameter type 'Iterable<OptionElement>'. (dart:html, line 27303, col 37)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of SharedWorker.onError (() → Stream<Event>) is not a subtype of AbstractWorker.onError (() → Stream<ErrorEvent>). (dart:html, line 27863, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.containsValue ((String) → bool) is not a subtype of Map<String, String>.containsValue ((Object) → bool). (dart:html, line 28875, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 28877, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 28879, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Storage.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 28888, col 3)
+severe: [UNDEFINED_METHOD] The method '_initStorageEvent' is not defined for the class 'Event'. (dart:html, line 28995, col 7)
+severe: [UNDEFINED_METHOD] The method '_initTextEvent' is not defined for the class 'Event'. (dart:html, line 29806, col 7)
+severe: [UNDEFINED_METHOD] The method '_initTouchEvent' is not defined for the class 'Event'. (dart:html, line 30466, col 7)
+severe: [UNDEFINED_METHOD] The method '_initUIEvent' is not defined for the class 'Event'. (dart:html, line 30796, col 7)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Window.postMessage ((dynamic, String, [List<MessagePort>]) → void) is not a subtype of WindowBase.postMessage ((dynamic, String, [List<dynamic>]) → void). (dart:html, line 32989, col 3)
+severe: [RETURN_OF_INVALID_TYPE] The return type 'String' is not a 'void', as defined by the method ''. (dart:html, line 33901, col 14)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of Worker.onError (() → Stream<Event>) is not a subtype of AbstractWorker.onError (() → Stream<ErrorEvent>). (dart:html, line 34096, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration Node.text cannot be overridden in _Attr. (dart:html, line 34598, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration Node.text= cannot be overridden in _Attr. (dart:html, line 34600, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.height cannot be overridden in _DomRect. (dart:html, line 35144, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.height (() → num) is not a subtype of DomRectReadOnly.height (() → double). (dart:html, line 35144, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.width cannot be overridden in _DomRect. (dart:html, line 35151, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.width (() → num) is not a subtype of DomRectReadOnly.width (() → double). (dart:html, line 35151, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.x cannot be overridden in _DomRect. (dart:html, line 35158, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.x (() → num) is not a subtype of DomRectReadOnly.x (() → double). (dart:html, line 35158, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration DomRectReadOnly.y cannot be overridden in _DomRect. (dart:html, line 35165, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DomRect.y (() → num) is not a subtype of DomRectReadOnly.y (() → double). (dart:html, line 35165, col 3)
+severe: [UNDEFINED_METHOD] The method '_initMutationEvent' is not defined for the class 'Event'. (dart:html, line 35456, col 11)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _AttributeMap.containsValue ((String) → bool) is not a subtype of Map<String, String>.containsValue ((Object) → bool). (dart:html, line 36035, col 3)
+severe: [UNDEFINED_GETTER] The getter 'name' is not defined for the class 'Node'. (dart:html, line 36070, col 32)
+severe: [UNDEFINED_GETTER] The getter 'value' is not defined for the class 'Node'. (dart:html, line 36082, col 34)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementAttributeMap.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 36113, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementAttributeMap.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 36117, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementAttributeMap.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 36125, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _NamespacedAttributeMap.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 36150, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _NamespacedAttributeMap.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 36154, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _NamespacedAttributeMap.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 36162, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.containsValue ((String) → bool) is not a subtype of Map<String, String>.containsValue ((Object) → bool). (dart:html, line 36196, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.containsKey ((String) → bool) is not a subtype of Map<String, String>.containsKey ((Object) → bool). (dart:html, line 36198, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.[] ((String) → String) is not a subtype of Map<String, String>.[] ((Object) → String). (dart:html, line 36200, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _DataAttributeMap.remove ((String) → String) is not a subtype of Map<String, String>.remove ((Object) → String). (dart:html, line 36209, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of CssClassSet.contains ((String) → bool) is not a subtype of Set<String>.contains ((Object) → bool). (dart:html, line 36522, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of CssClassSet.removeAll ((Iterable<String>) → void) is not a subtype of Set<String>.removeAll ((Iterable<Object>) → void). (dart:html, line 36574, col 3)
+severe: [UNDEFINED_GETTER] The getter 'value' is not defined for the class 'num'. (dart:html, line 36621, col 21)
+severe: [INVALID_ASSIGNMENT] A value of type 'Dimension' cannot be assigned to a variable of type 'num' (dart:html, line 36621, col 44)
+severe: [UNDEFINED_GETTER] The getter 'value' is not defined for the class 'num'. (dart:html, line 36639, col 20)
+severe: [INVALID_ASSIGNMENT] A value of type 'Dimension' cannot be assigned to a variable of type 'num' (dart:html, line 36639, col 42)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration MutableRectangle<num>.left cannot be overridden in CssRect. (dart:html, line 36754, col 3)
+severe: [STRONG_MODE_INVALID_FIELD_OVERRIDE] Field declaration MutableRectangle<num>.top cannot be overridden in CssRect. (dart:html, line 36756, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementCssClassSet.removeAll ((Iterable<String>) → void) is not a subtype of CssClassSetImpl.removeAll ((Iterable<Object>) → void). (dart:html, line 36973, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementCssClassSet.retainAll ((Iterable<String>) → void) is not a subtype of CssClassSetImpl.retainAll ((Iterable<Object>) → void). (dart:html, line 36977, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementCssClassSet.retainAll ((Iterable<String>) → void) is not a subtype of Set<String>.retainAll ((Iterable<Object>) → void). (dart:html, line 36977, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _EventStream.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37327, col 3)
+severe: [NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_ONE] Missing concrete implementation of 'Stream.asBroadcastStream' (dart:html, line 37346, col 7)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Base class introduces an invalid override. The type of _EventStream.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37346, col 48)
+severe: [UNDEFINED_METHOD] The method 'matchesWithAncestors' is not defined for the class 'EventTarget'. (dart:html, line 37352, col 31)
+severe: [UNDEFINED_METHOD] The method 'matchesWithAncestors' is not defined for the class 'EventTarget'. (dart:html, line 37376, col 31)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementListEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37402, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _ElementListEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37402, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _CustomEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37518, col 3)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of _CustomEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<T>) is not a subtype of Stream<T>.asBroadcastStream (({onListen: (StreamSubscription<T>) → void, onCancel: (StreamSubscription<T>) → void}) → Stream<T>). (dart:html, line 37518, col 3)
+severe: [NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_ONE] Missing concrete implementation of 'Stream.asBroadcastStream' (dart:html, line 37529, col 7)
+severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Base class introduces an invalid override. The type of _CustomEventStreamImpl.asBroadcastStream (({onListen: (StreamSubscription<dynamic>) → void, onCancel: (StreamSubscription<dynamic>) → void}) → Stream<KeyEvent>) is not a subtype of Stream<KeyEvent>.asBroadcastStream (({onListen: (StreamSubscription<KeyEvent>) → void, onCancel: (StreamSubscription<KeyEvent>) → void}) → Stream<KeyEvent>). (dart:html, line 37529, col 33)
+severe: [RETURN_OF_INVALID_TYPE] The return type '_EventStream<Event>' is not a 'Stream<T>', as defined by the method 'forTarget'. (dart:html, line 37610, col 12)
+severe: [RETURN_OF_INVALID_TYPE] The return type '_ElementEventStreamImpl<Event>' is not a 'ElementStream<T>', as defined by the method 'forElement'. (dart:html, line 37614, col 12)
+severe: [RETURN_OF_INVALID_TYPE] The return type '_ElementListEventStreamImpl<Event>' is not a 'ElementStream<T>', as defined by the method '_forElementList'. (dart:html, line 37619, col 12)
+severe: [STRONG_MODE_INVALID_SUPER_INVOCATION] super call must be last in an initializer list (see https://goo.gl/EY6hDP): super(_EVENT_TYPE) (dart:html, line 39057, col 38)
+severe: [UNDEFINED_GETTER] The getter '_shadowCharCode' is not defined for the class 'KeyboardEvent'. (dart:html, line 39090, col 21)
+severe: [UNDEFINED_GETTER] The getter '_shadowCharCode' is not defined for the class 'KeyboardEvent'. (dart:html, line 39095, col 47)
+severe: [STRONG_MODE_INVALID_SUPER_INVOCATION] super call must be last in an initializer list (see https://goo.gl/EY6hDP): super(uriPolicy, allowedElements: allowedElements, allowedAttributes: allowedAttributes, allowedUriAttributes: allowedUriAttributes) (dart:html, line 39753, col 7)
+severe: [STRONG_MODE_INVALID_SUPER_INVOCATION] super call must be last in an initializer list (see https://goo.gl/EY6hDP): super(null, allowedElements: ['TEMPLATE'], allowedAttributes: _TEMPLATE_ATTRS.map((attr) => 'TEMPLATE::$attr')) (dart:html, line 39790, col 7)
+severe: [UNDEFINED_FUNCTION] The function 'setNativeSubclassDispatchRecord' is not defined. (dart:html, line 40083, col 5)
+severe: [UNDEFINED_FUNCTION] The function 'convertDartClosureToJS' is not defined. (dart:html, line 40111, col 7)
+severe: [UNDEFINED_FUNCTION] The function 'convertDartClosureToJS' is not defined. (dart:html, line 40121, col 7)
+severe: [UNDEFINED_FUNCTION] The function 'findInterceptorConstructorForType' is not defined. (dart:html, line 40140, col 26)
+severe: [UNDEFINED_FUNCTION] The function 'findConstructorForNativeSubclassType' is not defined. (dart:html, line 40147, col 21)
+severe: [UNDEFINED_FUNCTION] The function 'getNativeInterceptor' is not defined. (dart:html, line 40154, col 3)
+severe: [UNDEFINED_FUNCTION] The function 'findDispatchTagForInterceptorClass' is not defined. (dart:html, line 40156, col 26)
+severe: [UNDEFINED_FUNCTION] The function 'setNativeSubclassDispatchRecord' is not defined. (dart:html, line 40190, col 3)
+severe: [UNDEFINED_METHOD] The method 'findInterceptorConstructorForType' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40213, col 28)
+severe: [UNDEFINED_METHOD] The method 'findConstructorForNativeSubclassType' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40218, col 20)
+severe: [UNDEFINED_METHOD] The method 'getNativeInterceptor' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40225, col 5)
+severe: [UNDEFINED_METHOD] The method 'findDispatchTagForInterceptorClass' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40227, col 25)
+severe: [UNDEFINED_METHOD] The method 'setNativeSubclassDispatchRecord' is not defined for the class '_JSElementUpgrader'. (dart:html, line 40257, col 5)
+severe: [UNDEFINED_METHOD] The method 'makeLeafDispatchRecord' is not defined for the class 'KeyEvent'. (dart:html, line 40462, col 12)
+severe: [UNDEFINED_METHOD] The method 'setDispatchProperty' is not defined for the class 'KeyEvent'. (dart:html, line 40532, col 5)
+severe: [UNDEFINED_METHOD] The method 'matches' is not defined for the class 'EventTarget'. (dart:html, line 40708, col 18)
+severe: [UNDEFINED_GETTER] The getter 'parent' is not defined for the class 'EventTarget'. (dart:html, line 40709, col 23)
+severe: [UNDEFINED_GETTER] The getter 'parent' is not defined for the class 'EventTarget'. (dart:html, line 40710, col 56)
 severe: [UNDEFINED_FUNCTION] The function 'convertDartClosureToJS' is not defined. (dart:html_common/conversions_dart2js.dart, line 89, col 14)
 severe: [UNDEFINED_FUNCTION] The function 'convertDartClosureToJS' is not defined. (dart:html_common/conversions_dart2js.dart, line 90, col 15)
 severe: [STRONG_MODE_INVALID_METHOD_OVERRIDE] Invalid override. The type of CssClassSetImpl.map (((String) → dynamic) → Iterable<dynamic>) is not a subtype of IterableBase<String>.map (<T>((String) → T) → Iterable<T>). (dart:html_common/css_class_set.dart, line 59, col 3)
@@ -504,38 +504,38 @@ warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'form', 'vali
 warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_2] The final variables 'form' and 'index' must be initialized (dart:html, line 24733, col 3)
 warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'form', 'htmlFor' and '5' more must be initialized (dart:html, line 24787, col 3)
 warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_2] The final variables 'labels' and 'position' must be initialized (dart:html, line 25757, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'form', 'labels' and '4' more must be initialized (dart:html, line 27206, col 3)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from List<dynamic> to Iterable<String> (dart:html, line 28907, col 12)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from List<dynamic> to Iterable<String> (dart:html, line 28913, col 12)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable 'sheet' must be initialized (dart:html, line 29133, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable 'cellIndex' must be initialized (dart:html, line 29255, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_2] The final variables '_rows' and '_tBodies' must be initialized (dart:html, line 29366, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables '_cells', 'rowIndex' and '1' more must be initialized (dart:html, line 29476, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable '_rows' must be initialized (dart:html, line 29543, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable 'content' must be initialized (dart:html, line 29586, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'form', 'labels' and '5' more must be initialized (dart:html, line 29662, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_2] The final variables 'readyState' and 'track' must be initialized (dart:html, line 30615, col 3)
-warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'decodedFrameCount', 'droppedFrameCount' and '2' more must be initialized (dart:html, line 31145, col 3)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to List<String> (dart:html, line 31592, col 58)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to (num) → void (dart:html, line 32042, col 35)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from Stream<dynamic> to Stream<BeforeUnloadEvent> (dart:html, line 33903, col 12)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34857, col 12)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34872, col 14)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34880, col 14)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34888, col 14)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to List<Element> (dart:html, line 36660, col 20)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from StreamSubscription<dynamic> to StreamSubscription<T> (dart:html, line 37389, col 12)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from StreamSubscription<dynamic> to StreamSubscription<T> (dart:html, line 37398, col 12)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to (Event) → dynamic (dart:html, line 37468, col 44)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to (Event) → dynamic (dart:html, line 37474, col 47)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Iterable<String> (dart:html, line 39535, col 9)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'form', 'labels' and '4' more must be initialized (dart:html, line 27207, col 3)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from List<dynamic> to Iterable<String> (dart:html, line 28908, col 12)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from List<dynamic> to Iterable<String> (dart:html, line 28914, col 12)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable 'sheet' must be initialized (dart:html, line 29134, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable 'cellIndex' must be initialized (dart:html, line 29256, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_2] The final variables '_rows' and '_tBodies' must be initialized (dart:html, line 29367, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables '_cells', 'rowIndex' and '1' more must be initialized (dart:html, line 29477, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable '_rows' must be initialized (dart:html, line 29544, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_1] The final variable 'content' must be initialized (dart:html, line 29587, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'form', 'labels' and '5' more must be initialized (dart:html, line 29663, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_2] The final variables 'readyState' and 'track' must be initialized (dart:html, line 30616, col 3)
+warning: [FINAL_NOT_INITIALIZED_CONSTRUCTOR_3] The final variables 'decodedFrameCount', 'droppedFrameCount' and '2' more must be initialized (dart:html, line 31146, col 3)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to List<String> (dart:html, line 31593, col 58)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to (num) → void (dart:html, line 32043, col 35)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from Stream<dynamic> to Stream<BeforeUnloadEvent> (dart:html, line 33904, col 12)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34858, col 12)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34873, col 14)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34881, col 14)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Rectangle<num> (dart:html, line 34889, col 14)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to List<Element> (dart:html, line 36661, col 20)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from StreamSubscription<dynamic> to StreamSubscription<T> (dart:html, line 37390, col 12)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from StreamSubscription<dynamic> to StreamSubscription<T> (dart:html, line 37399, col 12)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to (Event) → dynamic (dart:html, line 37469, col 44)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to (Event) → dynamic (dart:html, line 37475, col 47)
 warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Iterable<String> (dart:html, line 39536, col 9)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Iterable<String> (dart:html, line 39573, col 9)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Iterable<String> (dart:html, line 39537, col 9)
 warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Iterable<String> (dart:html, line 39574, col 9)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:html, line 39895, col 31)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:html, line 39909, col 28)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from List<dynamic> to List<Node> (dart:html, line 39925, col 29)
-warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:html, line 39940, col 20)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to Iterable<String> (dart:html, line 39575, col 9)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:html, line 39896, col 31)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:html, line 39910, col 28)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from List<dynamic> to List<Node> (dart:html, line 39926, col 29)
+warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from dynamic to E (dart:html, line 39941, col 20)
 warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from (String) → String to (Object) → String (dart:html_common/css_class_set.dart, line 148, col 44)
 warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from Future<dynamic> to Future<Database> (dart:indexed_db, line 548, col 14)
 warning: [STRONG_MODE_DOWN_CAST_COMPOSITE] Unsound implicit cast from (dynamic) → void to (Event) → void (dart:indexed_db, line 561, col 34)