Remove eval error message on async frames (#2073)

diff --git a/dwds/CHANGELOG.md b/dwds/CHANGELOG.md
index 6fd70e5..99dc0f3 100644
--- a/dwds/CHANGELOG.md
+++ b/dwds/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## 19.0.1-dev
 
+- Do not show async frame errors on evaluation. - [#2073](https://github.com/dart-lang/webdev/pull/2073)
+
 ## 19.0.0
 
 - Allow clients to specify the connected app's entrypoint file. - [#2047](https://github.com/dart-lang/webdev/pull/2047)
diff --git a/dwds/lib/src/injected/client.js b/dwds/lib/src/injected/client.js
index ed93220..69346fb 100644
--- a/dwds/lib/src/injected/client.js
+++ b/dwds/lib/src/injected/client.js
@@ -1,4 +1,4 @@
-// Generated by dart2js (NullSafetyMode.sound, csp, deferred-serialization, intern-composite-values), the Dart to JavaScript compiler version: 3.0.0-290.3.beta.
+// Generated by dart2js (NullSafetyMode.sound, csp, deferred-serialization, intern-composite-values), the Dart to JavaScript compiler version: 3.0.0-375.0.dev.
 // The code supports the following hooks:
 // dartPrint(message):
 //    if this function is defined it is called instead of the Dart [print]
@@ -46,7 +46,7 @@
     };
     cls.prototype = {p: {}};
     var object = new cls();
-    if (!(object.__proto__ && object.__proto__.p === cls.prototype.p))
+    if (!(Object.getPrototypeOf(object) && Object.getPrototypeOf(object).p === cls.prototype.p))
       return false;
     try {
       if (typeof navigator != "undefined" && typeof navigator.userAgent == "string" && navigator.userAgent.indexOf("Chrome/") >= 0)
@@ -65,7 +65,7 @@
     cls.prototype["$is" + cls.name] = cls;
     if (sup != null) {
       if (supportsDirectProtoAccess) {
-        cls.prototype.__proto__ = sup.prototype;
+        Object.setPrototypeOf(cls.prototype, sup.prototype);
         return;
       }
       var clsPrototype = Object.create(sup.prototype);
@@ -785,6 +785,15 @@
       }
       return A._rtiToString(A.instanceType(object), null);
     },
+    Primitives_safeToString(object) {
+      if (typeof object == "number" || A._isBool(object))
+        return J.toString$0$(object);
+      if (typeof object == "string")
+        return JSON.stringify(object);
+      if (object instanceof A.Closure)
+        return object.toString$0(0);
+      return "Instance of '" + A.Primitives_objectTypeName(object) + "'";
+    },
     Primitives__fromCharCodeApply(array) {
       var result, i, i0, chunkEnd,
         end = array.length;
@@ -2131,6 +2140,10 @@
       var rti = object instanceof A.Closure ? A.closureFunctionType(object) : null;
       return A.createRuntimeType(rti == null ? A.instanceType(object) : rti);
     },
+    _structuralTypeOf(object) {
+      var t1 = object instanceof A.Closure ? A.closureFunctionType(object) : null;
+      return t1 == null ? A.instanceType(object) : t1;
+    },
     createRuntimeType(rti) {
       var t1 = rti._cachedRuntimeType;
       return t1 == null ? rti._cachedRuntimeType = A._createRuntimeType(rti) : t1;
@@ -2291,7 +2304,7 @@
       A._failedAsCheck(object, testRti);
     },
     _failedAsCheck(object, testRti) {
-      throw A.wrapException(A._TypeError$fromMessage(A._Error_compose(object, A.instanceOrFunctionType(object, testRti), A._rtiToString(testRti, null))));
+      throw A.wrapException(A._TypeError$fromMessage(A._Error_compose(object, A._rtiToString(testRti, null))));
     },
     checkTypeBound(type, bound, variable, methodName) {
       var _null = null;
@@ -2299,15 +2312,14 @@
         return type;
       throw A.wrapException(A._TypeError$fromMessage("The type argument '" + A._rtiToString(type, _null) + "' is not a subtype of the type variable bound '" + A._rtiToString(bound, _null) + "' of type variable '" + variable + "' in '" + methodName + "'."));
     },
-    _Error_compose(object, objectRti, checkedTypeDescription) {
-      var objectDescription = A.Error_safeToString(object);
-      return objectDescription + ": type '" + A._rtiToString(objectRti == null ? A.instanceType(object) : objectRti, null) + "' is not a subtype of type '" + checkedTypeDescription + "'";
+    _Error_compose(object, checkedTypeDescription) {
+      return A.Error_safeToString(object) + ": type '" + A._rtiToString(A._structuralTypeOf(object), null) + "' is not a subtype of type '" + checkedTypeDescription + "'";
     },
     _TypeError$fromMessage(message) {
       return new A._TypeError("TypeError: " + message);
     },
     _TypeError__TypeError$forType(object, type) {
-      return new A._TypeError("TypeError: " + A._Error_compose(object, null, type));
+      return new A._TypeError("TypeError: " + A._Error_compose(object, type));
     },
     _isObject(object) {
       return object != null;
@@ -2927,7 +2939,7 @@
       return {u: universe, e: environment, r: recipe, s: [], p: 0, n: normalize};
     },
     _Parser_parse(parser) {
-      var t2, i, ch, t3, array, head, base, end, item,
+      var t2, i, ch, t3, array, end, item,
         source = parser.r,
         t1 = parser.s;
       for (t2 = source.length, i = 0; i < t2;) {
@@ -2969,24 +2981,7 @@
               parser.p = t1.length;
               break;
             case 62:
-              t3 = parser.u;
-              array = t1.splice(parser.p);
-              A._Parser_toTypes(parser.u, parser.e, array);
-              parser.p = t1.pop();
-              head = t1.pop();
-              if (typeof head == "string")
-                t1.push(A._Universe__lookupInterfaceRti(t3, head, array));
-              else {
-                base = A._Parser_toType(t3, parser.e, head);
-                switch (base._kind) {
-                  case 12:
-                    t1.push(A._Universe__lookupGenericFunctionRti(t3, base, array, parser.n));
-                    break;
-                  default:
-                    t1.push(A._Universe__lookupBindingRti(t3, base, array));
-                    break;
-                }
-              }
+              A._Parser_handleTypeArguments(parser, t1);
               break;
             case 38:
               A._Parser_handleExtendedOperations(parser, t1);
@@ -3093,6 +3088,25 @@
         stack.push(string);
       return i;
     },
+    _Parser_handleTypeArguments(parser, stack) {
+      var base,
+        t1 = parser.u,
+        $arguments = A._Parser_collectArray(parser, stack),
+        head = stack.pop();
+      if (typeof head == "string")
+        stack.push(A._Universe__lookupInterfaceRti(t1, head, $arguments));
+      else {
+        base = A._Parser_toType(t1, parser.e, head);
+        switch (base._kind) {
+          case 12:
+            stack.push(A._Universe__lookupGenericFunctionRti(t1, base, $arguments, parser.n));
+            break;
+          default:
+            stack.push(A._Universe__lookupBindingRti(t1, base, $arguments));
+            break;
+        }
+      }
+    },
     _Parser_handleArguments(parser, stack) {
       var optionalPositional, named, requiredPositional, returnType, parameters, _null = null,
         t1 = parser.u,
@@ -3607,11 +3621,11 @@
         if ($T._eval$1("Future<0>")._is(result))
           return result;
         else {
-          t1 = $T._as(result);
-          t2 = new A._Future($.Zone__current, $T._eval$1("_Future<0>"));
-          t2._state = 8;
-          t2._resultOrListeners = t1;
-          return t2;
+          t1 = new A._Future($.Zone__current, $T._eval$1("_Future<0>"));
+          t2 = $T._as(result);
+          t1._state = 8;
+          t1._resultOrListeners = t2;
+          return t1;
         }
       } catch (exception) {
         error = A.unwrapException(exception);
@@ -3627,13 +3641,8 @@
       }
     },
     Future_Future$value(value, $T) {
-      var t1, t2;
-      if (value == null) {
-        $T._as(value);
-        t1 = value;
-      } else
-        t1 = value;
-      t2 = new A._Future($.Zone__current, $T._eval$1("_Future<0>"));
+      var t1 = value == null ? $T._as(value) : value,
+        t2 = new A._Future($.Zone__current, $T._eval$1("_Future<0>"));
       t2._asyncComplete$1(t1);
       return t2;
     },
@@ -4206,8 +4215,6 @@
       this.subscription = t1;
       this.future = t2;
     },
-    StreamSubscription: function StreamSubscription() {
-    },
     StreamTransformerBase: function StreamTransformerBase() {
     },
     _StreamController: function _StreamController() {
@@ -5369,11 +5376,6 @@
         return value;
       throw A.wrapException(A.FormatException$(source, null, null));
     },
-    Error__objectToString(object) {
-      if (object instanceof A.Closure)
-        return object.toString$0(0);
-      return "Instance of '" + A.Primitives_objectTypeName(object) + "'";
-    },
     Error__throw(error, stackTrace) {
       error = A.wrapException(error);
       if (error == null)
@@ -5552,7 +5554,7 @@
         return J.toString$0$(object);
       if (typeof object == "string")
         return JSON.stringify(object);
-      return A.Error__objectToString(object);
+      return A.Primitives_safeToString(object);
     },
     AssertionError$(message) {
       return new A.AssertionError(message);
@@ -6520,7 +6522,7 @@
       return new A.UriData(text, indices, sourceUri);
     },
     _createTables() {
-      var _i, t2, t3, t4, b,
+      var _i, t2, t3, t4, t5,
         _s77_ = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-._~!$&'()*+,;=",
         _s1_ = ".", _s1_0 = ":", _s1_1 = "/", _s1_2 = "\\", _s1_3 = "?", _s1_4 = "#", _s2_ = "/\\",
         t1 = type$.Uint8List,
@@ -6530,138 +6532,138 @@
       t2 = new A._createTables_build(tables);
       t3 = new A._createTables_setChars();
       t4 = new A._createTables_setRange();
-      t1 = t1._as(t2.call$2(0, 225));
-      t3.call$3(t1, _s77_, 1);
-      t3.call$3(t1, _s1_, 14);
-      t3.call$3(t1, _s1_0, 34);
-      t3.call$3(t1, _s1_1, 3);
-      t3.call$3(t1, _s1_2, 227);
-      t3.call$3(t1, _s1_3, 172);
-      t3.call$3(t1, _s1_4, 205);
-      b = t2.call$2(14, 225);
-      t3.call$3(b, _s77_, 1);
-      t3.call$3(b, _s1_, 15);
-      t3.call$3(b, _s1_0, 34);
-      t3.call$3(b, _s2_, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(15, 225);
-      t3.call$3(b, _s77_, 1);
-      t3.call$3(b, "%", 225);
-      t3.call$3(b, _s1_0, 34);
-      t3.call$3(b, _s1_1, 9);
-      t3.call$3(b, _s1_2, 233);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(1, 225);
-      t3.call$3(b, _s77_, 1);
-      t3.call$3(b, _s1_0, 34);
-      t3.call$3(b, _s1_1, 10);
-      t3.call$3(b, _s1_2, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(2, 235);
-      t3.call$3(b, _s77_, 139);
-      t3.call$3(b, _s1_1, 131);
-      t3.call$3(b, _s1_2, 131);
-      t3.call$3(b, _s1_, 146);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(3, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_1, 68);
-      t3.call$3(b, _s1_2, 68);
-      t3.call$3(b, _s1_, 18);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(4, 229);
-      t3.call$3(b, _s77_, 5);
-      t4.call$3(b, "AZ", 229);
-      t3.call$3(b, _s1_0, 102);
-      t3.call$3(b, "@", 68);
-      t3.call$3(b, "[", 232);
-      t3.call$3(b, _s1_1, 138);
-      t3.call$3(b, _s1_2, 138);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(5, 229);
-      t3.call$3(b, _s77_, 5);
-      t4.call$3(b, "AZ", 229);
-      t3.call$3(b, _s1_0, 102);
-      t3.call$3(b, "@", 68);
-      t3.call$3(b, _s1_1, 138);
-      t3.call$3(b, _s1_2, 138);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(6, 231);
-      t4.call$3(b, "19", 7);
-      t3.call$3(b, "@", 68);
-      t3.call$3(b, _s1_1, 138);
-      t3.call$3(b, _s1_2, 138);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(7, 231);
-      t4.call$3(b, "09", 7);
-      t3.call$3(b, "@", 68);
-      t3.call$3(b, _s1_1, 138);
-      t3.call$3(b, _s1_2, 138);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      t3.call$3(t2.call$2(8, 8), "]", 5);
-      b = t2.call$2(9, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_, 16);
-      t3.call$3(b, _s2_, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(16, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_, 17);
-      t3.call$3(b, _s2_, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(17, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_1, 9);
-      t3.call$3(b, _s1_2, 233);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(10, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_, 18);
-      t3.call$3(b, _s1_1, 10);
-      t3.call$3(b, _s1_2, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(18, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_, 19);
-      t3.call$3(b, _s2_, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(19, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s2_, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(11, 235);
-      t3.call$3(b, _s77_, 11);
-      t3.call$3(b, _s1_1, 10);
-      t3.call$3(b, _s1_2, 234);
-      t3.call$3(b, _s1_3, 172);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(12, 236);
-      t3.call$3(b, _s77_, 12);
-      t3.call$3(b, _s1_3, 12);
-      t3.call$3(b, _s1_4, 205);
-      b = t2.call$2(13, 237);
-      t3.call$3(b, _s77_, 13);
-      t3.call$3(b, _s1_3, 13);
-      t4.call$3(t2.call$2(20, 245), "az", 21);
-      b = t2.call$2(21, 245);
-      t4.call$3(b, "az", 21);
-      t4.call$3(b, "09", 21);
-      t3.call$3(b, "+-.", 21);
+      t5 = t1._as(t2.call$2(0, 225));
+      t3.call$3(t5, _s77_, 1);
+      t3.call$3(t5, _s1_, 14);
+      t3.call$3(t5, _s1_0, 34);
+      t3.call$3(t5, _s1_1, 3);
+      t3.call$3(t5, _s1_2, 227);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(14, 225));
+      t3.call$3(t5, _s77_, 1);
+      t3.call$3(t5, _s1_, 15);
+      t3.call$3(t5, _s1_0, 34);
+      t3.call$3(t5, _s2_, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(15, 225));
+      t3.call$3(t5, _s77_, 1);
+      t3.call$3(t5, "%", 225);
+      t3.call$3(t5, _s1_0, 34);
+      t3.call$3(t5, _s1_1, 9);
+      t3.call$3(t5, _s1_2, 233);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(1, 225));
+      t3.call$3(t5, _s77_, 1);
+      t3.call$3(t5, _s1_0, 34);
+      t3.call$3(t5, _s1_1, 10);
+      t3.call$3(t5, _s1_2, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(2, 235));
+      t3.call$3(t5, _s77_, 139);
+      t3.call$3(t5, _s1_1, 131);
+      t3.call$3(t5, _s1_2, 131);
+      t3.call$3(t5, _s1_, 146);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(3, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_1, 68);
+      t3.call$3(t5, _s1_2, 68);
+      t3.call$3(t5, _s1_, 18);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(4, 229));
+      t3.call$3(t5, _s77_, 5);
+      t4.call$3(t5, "AZ", 229);
+      t3.call$3(t5, _s1_0, 102);
+      t3.call$3(t5, "@", 68);
+      t3.call$3(t5, "[", 232);
+      t3.call$3(t5, _s1_1, 138);
+      t3.call$3(t5, _s1_2, 138);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(5, 229));
+      t3.call$3(t5, _s77_, 5);
+      t4.call$3(t5, "AZ", 229);
+      t3.call$3(t5, _s1_0, 102);
+      t3.call$3(t5, "@", 68);
+      t3.call$3(t5, _s1_1, 138);
+      t3.call$3(t5, _s1_2, 138);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(6, 231));
+      t4.call$3(t5, "19", 7);
+      t3.call$3(t5, "@", 68);
+      t3.call$3(t5, _s1_1, 138);
+      t3.call$3(t5, _s1_2, 138);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(7, 231));
+      t4.call$3(t5, "09", 7);
+      t3.call$3(t5, "@", 68);
+      t3.call$3(t5, _s1_1, 138);
+      t3.call$3(t5, _s1_2, 138);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t3.call$3(t1._as(t2.call$2(8, 8)), "]", 5);
+      t5 = t1._as(t2.call$2(9, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_, 16);
+      t3.call$3(t5, _s2_, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(16, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_, 17);
+      t3.call$3(t5, _s2_, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(17, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_1, 9);
+      t3.call$3(t5, _s1_2, 233);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(10, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_, 18);
+      t3.call$3(t5, _s1_1, 10);
+      t3.call$3(t5, _s1_2, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(18, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_, 19);
+      t3.call$3(t5, _s2_, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(19, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s2_, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(11, 235));
+      t3.call$3(t5, _s77_, 11);
+      t3.call$3(t5, _s1_1, 10);
+      t3.call$3(t5, _s1_2, 234);
+      t3.call$3(t5, _s1_3, 172);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(12, 236));
+      t3.call$3(t5, _s77_, 12);
+      t3.call$3(t5, _s1_3, 12);
+      t3.call$3(t5, _s1_4, 205);
+      t5 = t1._as(t2.call$2(13, 237));
+      t3.call$3(t5, _s77_, 13);
+      t3.call$3(t5, _s1_3, 13);
+      t4.call$3(t1._as(t2.call$2(20, 245)), "az", 21);
+      t2 = t1._as(t2.call$2(21, 245));
+      t4.call$3(t2, "az", 21);
+      t4.call$3(t2, "09", 21);
+      t3.call$3(t2, "+-.", 21);
       return tables;
     },
     _scan(uri, start, end, state, indices) {
@@ -6900,7 +6902,7 @@
       return t1;
     },
     HttpRequest_request(url, method, responseType, withCredentials) {
-      var t2, t3, t4,
+      var t2, t3,
         t1 = new A._Future($.Zone__current, type$._Future_HttpRequest),
         completer = new A._AsyncCompleter(t1, type$._AsyncCompleter_HttpRequest),
         xhr = new XMLHttpRequest();
@@ -6910,11 +6912,9 @@
       if (responseType != null)
         xhr.responseType = responseType;
       t2 = type$.nullable_void_Function_ProgressEvent;
-      t3 = t2._as(new A.HttpRequest_request_closure(xhr, completer));
-      type$.nullable_void_Function._as(null);
-      t4 = type$.ProgressEvent;
-      A._EventStreamSubscription$(xhr, "load", t3, false, t4);
-      A._EventStreamSubscription$(xhr, "error", t2._as(completer.get$completeError()), false, t4);
+      t3 = type$.ProgressEvent;
+      A._EventStreamSubscription$(xhr, "load", t2._as(new A.HttpRequest_request_closure(xhr, completer)), false, t3);
+      A._EventStreamSubscription$(xhr, "error", t2._as(completer.get$completeError()), false, t3);
       xhr.send();
       return t1;
     },
@@ -7715,6 +7715,13 @@
       this._stream_queue$_completer = t0;
       this.$ti = t1;
     },
+    CopyOnWriteList: function CopyOnWriteList(t0, t1, t2) {
+      var _ = this;
+      _._copyBeforeWrite = true;
+      _._growable = t0;
+      _._copy_on_write_list$_list = t1;
+      _.$ti = t2;
+    },
     hashObjects(objects) {
       return A._finish(B.JSArray_methods.fold$1$2(objects, 0, new A.hashObjects_closure(), type$.int));
     },
@@ -8858,10 +8865,10 @@
     },
     LegacyRestarter: function LegacyRestarter() {
     },
-    LegacyRestarter_restart_closure: function LegacyRestarter_restart_closure(t0) {
+    LegacyRestarter_restart_closure0: function LegacyRestarter_restart_closure0(t0) {
       this.reloadCompleter = t0;
     },
-    LegacyRestarter_restart_closure0: function LegacyRestarter_restart_closure0(t0) {
+    LegacyRestarter_restart_closure: function LegacyRestarter_restart_closure(t0) {
       this.sub = t0;
     },
     ReloadingManager: function ReloadingManager(t0, t1) {
@@ -9325,6 +9332,9 @@
     sort$1$ax(receiver, a0) {
       return J.getInterceptor$ax(receiver).sort$1(receiver, a0);
     },
+    sublist$2$ax(receiver, a0, a1) {
+      return J.getInterceptor$ax(receiver).sublist$2(receiver, a0, a1);
+    },
     then$1$1$x(receiver, a0, $T1) {
       return J.getInterceptor$x(receiver).then$1$1(receiver, a0, $T1);
     },
@@ -9334,6 +9344,9 @@
     toList$0$ax(receiver) {
       return J.getInterceptor$ax(receiver).toList$0(receiver);
     },
+    toList$1$growable$ax(receiver, a0) {
+      return J.getInterceptor$ax(receiver).toList$1$growable(receiver, a0);
+    },
     toLowerCase$0$s(receiver) {
       return J.getInterceptor$s(receiver).toLowerCase$0(receiver);
     },
@@ -10369,16 +10382,19 @@
         end = endOrLength;
       $length = end - start;
       if ($length <= 0) {
-        t1 = J.JSArray_JSArray$fixed(0, _this.$ti._precomputed1);
-        return t1;
+        t1 = _this.$ti._precomputed1;
+        return growable ? J.JSArray_JSArray$growable(0, t1) : J.JSArray_JSArray$fixed(0, t1);
       }
-      result = A.List_List$filled($length, t2.elementAt$1(t1, start), false, _this.$ti._precomputed1);
+      result = A.List_List$filled($length, t2.elementAt$1(t1, start), growable, _this.$ti._precomputed1);
       for (i = 1; i < $length; ++i) {
         B.JSArray_methods.$indexSet(result, i, t2.elementAt$1(t1, start + i));
         if (t2.get$length(t1) < end)
           throw A.wrapException(A.ConcurrentModificationError$(_this));
       }
       return result;
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
     }
   };
   A.ListIterator.prototype = {
@@ -10544,6 +10560,13 @@
     skip$1(_, count) {
       A.RangeError_checkNotNegative(count, "count");
       return this;
+    },
+    toList$1$growable(_, growable) {
+      var t1 = J.JSArray_JSArray$growable(0, this.$ti._precomputed1);
+      return t1;
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
     }
   };
   A.EmptyIterator.prototype = {
@@ -11638,7 +11661,7 @@
         t1 = _this.$ti;
       t1._eval$1("1/?")._as(value);
       if (value == null)
-        t1._precomputed1._as(value);
+        value = t1._precomputed1._as(value);
       if (!_this.isSync)
         _this._future._asyncComplete$1(value);
       else {
@@ -11646,7 +11669,7 @@
         if (t1._eval$1("Future<1>")._is(value))
           t2._chainFuture$1(value);
         else
-          t2._completeWithValue$1(t1._precomputed1._as(value));
+          t2._completeWithValue$1(value);
       }
     },
     completeError$2(e, st) {
@@ -11947,7 +11970,7 @@
         this._chainFuture$1(value);
         return;
       }
-      this._asyncCompleteWithValue$1(t1._precomputed1._as(value));
+      this._asyncCompleteWithValue$1(value);
     },
     _asyncCompleteWithValue$1(value) {
       var _this = this;
@@ -12234,7 +12257,6 @@
       return A._instanceType(this.$this)._eval$1("~(Stream.T)");
     }
   };
-  A.StreamSubscription.prototype = {};
   A.StreamTransformerBase.prototype = {$isStreamTransformer: 1};
   A._StreamController.prototype = {
     get$_pendingEvents() {
@@ -12526,7 +12548,6 @@
     },
     asFuture$1$1(futureValue, $E) {
       var result, t1 = {};
-      $E._eval$1("0?")._as(futureValue);
       t1.resultValue = null;
       if (!$E._is(null))
         throw A.wrapException(A.ArgumentError$notNull("futureValue"));
@@ -14102,6 +14123,12 @@
           return true;
       return false;
     },
+    toList$1$growable(_, growable) {
+      return A.List_List$from(this, true, this.$ti._precomputed1);
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
     get$length(_) {
       var count,
         t1 = this.$ti,
@@ -14200,6 +14227,21 @@
     skip$1(receiver, count) {
       return A.SubListIterable$(receiver, count, null, A.instanceType(receiver)._eval$1("ListMixin.E"));
     },
+    toList$1$growable(receiver, growable) {
+      var t1, first, result, i, _this = this;
+      if (_this.get$isEmpty(receiver)) {
+        t1 = J.JSArray_JSArray$growable(0, A.instanceType(receiver)._eval$1("ListMixin.E"));
+        return t1;
+      }
+      first = _this.$index(receiver, 0);
+      result = A.List_List$filled(_this.get$length(receiver), first, true, A.instanceType(receiver)._eval$1("ListMixin.E"));
+      for (i = 1; i < _this.get$length(receiver); ++i)
+        B.JSArray_methods.$indexSet(result, i, _this.$index(receiver, i));
+      return result;
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
     cast$1$0(receiver, $R) {
       return new A.CastList(receiver, A.instanceType(receiver)._eval$1("@<ListMixin.E>")._bind$1($R)._eval$1("CastList<1,2>"));
     },
@@ -14385,6 +14427,29 @@
       t3 = t1[t3];
       return t3 == null ? _this.$ti._precomputed1._as(t3) : t3;
     },
+    toList$1$growable(_, growable) {
+      var t1, list, i, t2, t3, _this = this,
+        mask = _this._table.length - 1,
+        $length = (_this._tail - _this._head & mask) >>> 0;
+      if ($length === 0) {
+        t1 = J.JSArray_JSArray$growable(0, _this.$ti._precomputed1);
+        return t1;
+      }
+      t1 = _this.$ti._precomputed1;
+      list = A.List_List$filled($length, _this.get$first(_this), true, t1);
+      for (i = 0; i < $length; ++i) {
+        t2 = _this._table;
+        t3 = (_this._head + i & mask) >>> 0;
+        if (!(t3 < t2.length))
+          return A.ioore(t2, t3);
+        t3 = t2[t3];
+        B.JSArray_methods.$indexSet(list, i, t3 == null ? t1._as(t3) : t3);
+      }
+      return list;
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
     toString$0(_) {
       return A.IterableBase_iterableToFullString(this, "{", "}");
     },
@@ -14482,6 +14547,12 @@
       }
       return true;
     },
+    toList$1$growable(_, growable) {
+      return A.List_List$of(this, true, A._instanceType(this)._precomputed1);
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
     map$1$1(_, f, $T) {
       var t1 = A._instanceType(this);
       return new A.EfficientLengthMappedIterable(this, t1._bind$1($T)._eval$1("1(2)")._as(f), t1._eval$1("@<1>")._bind$1($T)._eval$1("EfficientLengthMappedIterable<1,2>"));
@@ -15067,15 +15138,11 @@
   };
   A.JsonCodec.prototype = {
     decode$2$reviver(_, source, reviver) {
-      var t1;
-      type$.nullable_nullable_Object_Function_2_nullable_Object_and_nullable_Object._as(reviver);
-      t1 = A._parseJson(source, this.get$decoder()._reviver);
+      var t1 = A._parseJson(source, this.get$decoder()._reviver);
       return t1;
     },
     encode$2$toEncodable(value, toEncodable) {
-      var t1;
-      type$.nullable_nullable_Object_Function_dynamic._as(toEncodable);
-      t1 = A._JsonStringStringifier_stringify(value, this.get$encoder()._toEncodable, null);
+      var t1 = A._JsonStringStringifier_stringify(value, this.get$encoder()._toEncodable, null);
       return t1;
     },
     get$encoder() {
@@ -18029,7 +18096,8 @@
     },
     set$_onData(_onData) {
       this._onData = type$.nullable_dynamic_Function_Event._as(_onData);
-    }
+    },
+    $isStreamSubscription: 1
   };
   A._EventStreamSubscription_closure.prototype = {
     call$1(e) {
@@ -18264,6 +18332,7 @@
       } catch (exception) {
       }
       try {
+        type$.Element._as(element);
         elementTagName = A.Element__safeTagName(element);
         this._sanitizeElement$7(element, $parent, corrupted, elementText, elementTagName, type$.Map_dynamic_dynamic._as(attrs), A._asStringQ(isAttr));
       } catch (exception) {
@@ -18326,15 +18395,10 @@
         _this.sanitizeTree$1(t1);
       }
     },
-    $isNodeTreeSanitizer: 1
-  };
-  A._ValidatingTreeSanitizer_sanitizeTree_walk.prototype = {
-    call$2(node, $parent) {
-      var child, nextChild, t2, t3, t4, exception,
-        t1 = this.$this;
+    sanitizeNode$2(node, $parent) {
       switch (node.nodeType) {
         case 1:
-          t1._sanitizeUntrustedElement$2(node, $parent);
+          this._sanitizeUntrustedElement$2(node, $parent);
           break;
         case 8:
         case 11:
@@ -18342,8 +18406,16 @@
         case 4:
           break;
         default:
-          t1._removeNode$2(node, $parent);
+          this._removeNode$2(node, $parent);
       }
+    },
+    $isNodeTreeSanitizer: 1
+  };
+  A._ValidatingTreeSanitizer_sanitizeTree_walk.prototype = {
+    call$2(node, $parent) {
+      var child, nextChild, t2, t3, t4, exception,
+        t1 = this.$this;
+      t1.sanitizeNode$2(node, $parent);
       child = node.lastChild;
       for (t2 = type$.Node; child != null;) {
         nextChild = null;
@@ -19217,6 +19289,87 @@
     },
     $is_EventRequest: 1
   };
+  A.CopyOnWriteList.prototype = {
+    get$length(_) {
+      return J.get$length$asx(this._copy_on_write_list$_list);
+    },
+    $index(_, index) {
+      return J.$index$asx(this._copy_on_write_list$_list, index);
+    },
+    cast$1$0(_, $T) {
+      return new A.CopyOnWriteList(true, J.cast$1$0$ax(this._copy_on_write_list$_list, $T), $T._eval$1("CopyOnWriteList<0>"));
+    },
+    contains$1(_, element) {
+      return J.contains$1$asx(this._copy_on_write_list$_list, element);
+    },
+    elementAt$1(_, index) {
+      return J.elementAt$1$ax(this._copy_on_write_list$_list, index);
+    },
+    get$first(_) {
+      return J.get$first$ax(this._copy_on_write_list$_list);
+    },
+    forEach$1(_, f) {
+      this.$ti._eval$1("~(1)")._as(f);
+      return J.forEach$1$ax(this._copy_on_write_list$_list, f);
+    },
+    get$isEmpty(_) {
+      return J.get$isEmpty$asx(this._copy_on_write_list$_list);
+    },
+    get$isNotEmpty(_) {
+      return J.get$isNotEmpty$asx(this._copy_on_write_list$_list);
+    },
+    get$iterator(_) {
+      return J.get$iterator$ax(this._copy_on_write_list$_list);
+    },
+    map$1$1(_, f, $T) {
+      this.$ti._bind$1($T)._eval$1("1(2)")._as(f);
+      return J.map$1$1$ax(this._copy_on_write_list$_list, f, $T);
+    },
+    map$1($receiver, f) {
+      return this.map$1$1($receiver, f, type$.dynamic);
+    },
+    skip$1(_, count) {
+      return J.skip$1$ax(this._copy_on_write_list$_list, count);
+    },
+    sublist$2(_, start, end) {
+      return J.sublist$2$ax(this._copy_on_write_list$_list, start, end);
+    },
+    sublist$1($receiver, start) {
+      return this.sublist$2($receiver, start, null);
+    },
+    toList$1$growable(_, growable) {
+      return J.toList$1$growable$ax(this._copy_on_write_list$_list, true);
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
+    $indexSet(_, index, element) {
+      this.$ti._precomputed1._as(element);
+      this._maybeCopyBeforeWrite$0();
+      J.$indexSet$ax(this._copy_on_write_list$_list, index, element);
+    },
+    sort$1(_, compare) {
+      this.$ti._eval$1("int(1,1)?")._as(compare);
+      this._maybeCopyBeforeWrite$0();
+      J.sort$1$ax(this._copy_on_write_list$_list, compare);
+    },
+    toString$0(_) {
+      return J.toString$0$(this._copy_on_write_list$_list);
+    },
+    _maybeCopyBeforeWrite$0() {
+      var _this = this;
+      if (!_this._copyBeforeWrite)
+        return;
+      _this._copyBeforeWrite = false;
+      _this.set$_copy_on_write_list$_list(A.List_List$from(_this._copy_on_write_list$_list, true, _this.$ti._precomputed1));
+    },
+    set$_copy_on_write_list$_list(_list) {
+      this._copy_on_write_list$_list = this.$ti._eval$1("List<1>")._as(_list);
+    },
+    $isEfficientLengthIterable: 1,
+    $isIterable: 1,
+    $isList: 1
+  };
   A.hashObjects_closure.prototype = {
     call$2(h, i) {
       return A._combine(A._asInt(h), J.get$hashCode$(i));
@@ -19277,6 +19430,12 @@
     contains$1(_, element) {
       return B.JSArray_methods.contains$1(this._list, element);
     },
+    toList$1$growable(_, growable) {
+      return new A.CopyOnWriteList(true, this._list, this.$ti._eval$1("CopyOnWriteList<1>"));
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
     get$isEmpty(_) {
       return this._list.length === 0;
     },
@@ -19863,6 +20022,13 @@
     contains$1(_, element) {
       return this._set$_set.contains$1(0, element);
     },
+    toList$1$growable(_, growable) {
+      var t1 = this._set$_set;
+      return A.List_List$of(t1, true, A._instanceType(t1)._precomputed1);
+    },
+    toList$0($receiver) {
+      return this.toList$1$growable($receiver, true);
+    },
     get$isEmpty(_) {
       return this._set$_set._collection$_length === 0;
     },
@@ -23978,7 +24144,7 @@
   A.PoolResource.prototype = {};
   A.SseClient.prototype = {
     SseClient$2$debugKey(serverUrl, debugKey) {
-      var t2, t3, t4, _this = this,
+      var t2, _this = this,
         t1 = serverUrl + "?sseClientId=" + _this._clientId;
       _this.__SseClient__serverUrl_A = t1;
       t1 = A.EventSource__factoryEventSource(t1, A.LinkedHashMap_LinkedHashMap$_literal(["withCredentials", true], type$.String, type$.dynamic));
@@ -23987,13 +24153,10 @@
       t1.get$first(t1).whenComplete$1(new A.SseClient_closure(_this));
       B.EventSource_methods.addEventListener$2(_this.__SseClient__eventSource_A, "message", _this.get$_onIncomingMessage());
       B.EventSource_methods.addEventListener$2(_this.__SseClient__eventSource_A, "control", _this.get$_onIncomingControlMessage());
-      t1 = _this.__SseClient__eventSource_A;
-      t2 = type$.nullable_void_Function_Event;
-      t3 = t2._as(new A.SseClient_closure0(_this));
-      type$.nullable_void_Function._as(null);
-      t4 = type$.Event;
-      A._EventStreamSubscription$(t1, "open", t3, false, t4);
-      A._EventStreamSubscription$(_this.__SseClient__eventSource_A, "error", t2._as(new A.SseClient_closure1(_this)), false, t4);
+      t1 = type$.nullable_void_Function_Event;
+      t2 = type$.Event;
+      A._EventStreamSubscription$(_this.__SseClient__eventSource_A, "open", t1._as(new A.SseClient_closure0(_this)), false, t2);
+      A._EventStreamSubscription$(_this.__SseClient__eventSource_A, "error", t1._as(new A.SseClient_closure1(_this)), false, t2);
     },
     close$0(_) {
       var _this = this,
@@ -24480,9 +24643,7 @@
       t1 = new A._EventStream(t2, "error", false, type$._EventStream_Event);
       t3 = type$.Null;
       t1.get$first(t1).then$1$1(0, new A.HtmlWebSocketChannel_closure0(_this), t3);
-      t1 = type$.nullable_void_Function_MessageEvent._as(new A.HtmlWebSocketChannel_closure1(_this));
-      type$.nullable_void_Function._as(null);
-      A._EventStreamSubscription$(t2, "message", t1, false, type$.MessageEvent);
+      A._EventStreamSubscription$(t2, "message", type$.nullable_void_Function_MessageEvent._as(new A.HtmlWebSocketChannel_closure1(_this)), false, type$.MessageEvent);
       t2 = new A._EventStream(t2, "close", false, type$._EventStream_CloseEvent);
       t2.get$first(t2).then$1$1(0, new A.HtmlWebSocketChannel_closure2(_this), t3);
     },
@@ -24627,12 +24788,8 @@
               self.$emitRegisterEvent = A.allowInterop(new A.main__closure2(client), type$.void_Function_String);
               self.$launchDevTools = A.allowInterop(new A.main__closure3(client), type$.void_Function);
               client.get$stream(client).listen$2$onError(new A.main__closure4(manager), new A.main__closure5());
-              if (A.boolConversionCheck(self.$dwdsEnableDevtoolsLaunch)) {
-                t1 = window;
-                t2 = type$.nullable_void_Function_KeyboardEvent._as(new A.main__closure6());
-                type$.nullable_void_Function._as(null);
-                A._EventStreamSubscription$(t1, "keydown", t2, false, type$.KeyboardEvent);
-              }
+              if (A.boolConversionCheck(self.$dwdsEnableDevtoolsLaunch))
+                A._EventStreamSubscription$(window, "keydown", type$.nullable_void_Function_KeyboardEvent._as(new A.main__closure6()), false, type$.KeyboardEvent);
               if (B.JSString_methods.contains$1(window.navigator.vendor, "Google")) {
                 t1 = client.get$sink();
                 t2 = $.$get$serializers();
@@ -24945,7 +25102,7 @@
     restart$1$runId(runId) {
       var $async$goto = 0,
         $async$completer = A._makeAsyncAwaitCompleter(type$.bool),
-        $async$returnValue, t1, t2, t3, dartLibrary;
+        $async$returnValue, t1, dartLibrary;
       var $async$restart$1$runId = A._wrapJsFunctionForAsync(function($async$errorCode, $async$result) {
         if ($async$errorCode === 1)
           return A._asyncRethrow($async$result, $async$completer);
@@ -24962,10 +25119,7 @@
                 dartLibrary.callMethod$2("reload", [A._wrapToDart(A.JsObject__convertDataTree(t1))]);
               }
               t1 = new A._Future($.Zone__current, type$._Future_bool);
-              t2 = window;
-              t3 = type$.nullable_void_Function_MessageEvent._as(new A.LegacyRestarter_restart_closure(new A._AsyncCompleter(t1, type$._AsyncCompleter_bool)));
-              type$.nullable_void_Function._as(null);
-              $async$returnValue = t1.then$1$1(0, new A.LegacyRestarter_restart_closure0(A._EventStreamSubscription$(t2, "message", t3, false, type$.MessageEvent)), type$.bool);
+              $async$returnValue = t1.then$1$1(0, new A.LegacyRestarter_restart_closure(A._EventStreamSubscription$(window, "message", type$.nullable_void_Function_MessageEvent._as(new A.LegacyRestarter_restart_closure0(new A._AsyncCompleter(t1, type$._AsyncCompleter_bool))), false, type$.MessageEvent)), type$.bool);
               // goto return
               $async$goto = 1;
               break;
@@ -24978,7 +25132,7 @@
     },
     $isRestarter: 1
   };
-  A.LegacyRestarter_restart_closure.prototype = {
+  A.LegacyRestarter_restart_closure0.prototype = {
     call$1($event) {
       var t1,
         message = new A._AcceptStructuredCloneDart2Js([], []).convertNativeToDart_AcceptStructuredClone$2$mustCopy(type$.MessageEvent._as($event).data, true);
@@ -24992,7 +25146,7 @@
     },
     $signature: 33
   };
-  A.LegacyRestarter_restart_closure0.prototype = {
+  A.LegacyRestarter_restart_closure.prototype = {
     call$1(value) {
       A._asBool(value);
       this.sub.cancel$0(0);
@@ -25014,7 +25168,6 @@
               // Function start
               t1 = $async$self._client.get$sink();
               t2 = $.$get$serializers();
-              type$.nullable_void_Function_IsolateExitBuilder._as(null);
               t1.add$1(0, B.C_JsonCodec.encode$2$toEncodable(t2.serialize$1(new A.IsolateExitBuilder()._isolate_events$_build$0()), null));
               $async$goto = 3;
               return A._asyncAwait($async$self._restarter.restart$1$runId(runId), $async$hotRestart$1$runId);
@@ -25042,7 +25195,6 @@
         return;
       t1 = this._client.get$sink();
       t2 = $.$get$serializers();
-      type$.nullable_void_Function_IsolateStartBuilder._as(null);
       t1.add$1(0, B.C_JsonCodec.encode$2$toEncodable(t2.serialize$1(new A.IsolateStartBuilder()._isolate_events$_build$0()), null));
     }
   };
@@ -25559,7 +25711,7 @@
       _inherit = hunkHelpers.inherit,
       _inheritMany = hunkHelpers.inheritMany;
     _inherit(A.Object, null);
-    _inheritMany(A.Object, [A.JS_CONST, J.Interceptor, J.ArrayIterator, A.Iterable, A.CastIterator, A.Closure, A.MapMixin, A.Error, A.SentinelValue, A.ListIterator, A.Iterator, A.EmptyIterator, A.FixedLengthListMixin, A.UnmodifiableListMixin, A._ListBase_Object_ListMixin, A.Symbol, A.MapView, A.ConstantMap, A.JSInvocationMirror, A.TypeErrorDecoder, A.NullThrownFromJavaScriptException, A.ExceptionAndStackTrace, A._StackTrace, A._Required, A.LinkedHashMapCell, A.LinkedHashMapKeyIterator, A.JSSyntaxRegExp, A._MatchImplementation, A._AllMatchesIterator, A.StringMatch, A._StringAllMatchesIterator, A._Cell, A.Rti, A._FunctionParameters, A._Type, A._TimerImpl, A._AsyncAwaitCompleter, A.AsyncError, A._Completer, A._FutureListener, A._Future, A._AsyncCallbackEntry, A.Stream, A.StreamSubscription, A.StreamTransformerBase, A._StreamController, A._SyncStreamControllerDispatch, A._AsyncStreamControllerDispatch, A._BufferingStreamSubscription, A._StreamSinkWrapper, A._DelayedEvent, A._DelayedDone, A._PendingEvents, A._StreamIterator, A._ZoneFunction, A._ZoneSpecification, A._ZoneDelegate, A._Zone, A._HashMapKeyIterator, A.__SetBase_Object_SetMixin, A._HashSetIterator, A._LinkedHashSetCell, A._LinkedHashSetIterator, A.IterableMixin, A.ListMixin, A._UnmodifiableMapMixin, A._ListQueueIterator, A.SetMixin, A._SplayTreeNode, A._SplayTree, A._SplayTreeIterator, A.Codec, A._JsonStringifier, A._Utf8Encoder, A._BigIntImpl, A.DateTime, A.Duration, A.OutOfMemoryError, A.StackOverflowError, A._Exception, A.FormatException, A.IntegerDivisionByZeroException, A.Null, A._StringStackTrace, A.StringBuffer, A._Uri, A.UriData, A._SimpleUri, A.Expando, A.CssStyleDeclarationBase, A.EventStreamProvider, A._Html5NodeValidator, A.ImmutableListMixin, A.NodeValidatorBuilder, A._SimpleNodeValidator, A._SvgNodeValidator, A.FixedSizeListIterator, A._DOMWindowCrossFrame, A._SameOriginUriPolicy, A._ValidatingTreeSanitizer, A._StructuredClone, A._AcceptStructuredClone, A.JsObject, A.NullRejectionException, A._JSRandom, A._Random, A.AsyncMemoizer, A.DelegatingStreamSink, A.ErrorResult, A.ValueResult, A.StreamQueue, A._NextRequest, A._HasNextRequest, A.BuiltList, A.ListBuilder, A.BuiltListMultimap, A.ListMultimapBuilder, A.BuiltMap, A.MapBuilder, A.BuiltSet, A.SetBuilder, A.BuiltSetMultimap, A.SetMultimapBuilder, A.EnumClass, A.IndentingBuiltValueToStringHelper, A.JsonObject, A.FullType, A.BigIntSerializer, A.BoolSerializer, A.BuiltJsonSerializers, A.BuiltJsonSerializersBuilder, A.BuiltListMultimapSerializer, A.BuiltListSerializer, A.BuiltMapSerializer, A.BuiltSetMultimapSerializer, A.BuiltSetSerializer, A.DateTimeSerializer, A.DoubleSerializer, A.DurationSerializer, A.Int64Serializer, A.IntSerializer, A.JsonObjectSerializer, A.NullSerializer, A.NumSerializer, A.RegExpSerializer, A.StringSerializer, A.UriSerializer, A.DefaultEquality, A.IterableEquality, A.ListEquality, A._UnorderedEquality, A._MapEntry, A.MapEquality, A.DeepCollectionEquality, A._QueueList_Object_ListMixin, A.BuildResult, A._$BuildStatusSerializer, A._$BuildResultSerializer, A.BuildResultBuilder, A.ConnectRequest, A._$ConnectRequestSerializer, A.ConnectRequestBuilder, A.DebugEvent, A.BatchedDebugEvents, A._$DebugEventSerializer, A._$BatchedDebugEventsSerializer, A.DebugEventBuilder, A.BatchedDebugEventsBuilder, A.DebugInfo, A._$DebugInfoSerializer, A.DebugInfoBuilder, A.DevToolsRequest, A.DevToolsResponse, A._$DevToolsRequestSerializer, A._$DevToolsResponseSerializer, A.DevToolsRequestBuilder, A.DevToolsResponseBuilder, A.ErrorResponse, A._$ErrorResponseSerializer, A.ErrorResponseBuilder, A.ExtensionRequest, A.ExtensionResponse, A.ExtensionEvent, A.BatchedEvents, A._$ExtensionRequestSerializer, A._$ExtensionResponseSerializer, A._$ExtensionEventSerializer, A._$BatchedEventsSerializer, A.ExtensionRequestBuilder, A.ExtensionResponseBuilder, A.ExtensionEventBuilder, A.BatchedEventsBuilder, A.IsolateExit, A.IsolateStart, A._$IsolateExitSerializer, A._$IsolateStartSerializer, A.IsolateExitBuilder, A.IsolateStartBuilder, A.RegisterEvent, A._$RegisterEventSerializer, A.RegisterEventBuilder, A.RunRequest, A._$RunRequestSerializer, A.BatchedStreamController, A.SocketClient, A.Int64, A.Level, A.LogRecord, A.Logger, A.Pool, A.PoolResource, A.StreamChannelMixin, A._GuaranteeSink, A.StreamChannelController, A.Uuid, A.WebSocketChannelException, A.LegacyRestarter, A.ReloadingManager, A.HotReloadFailedException, A.RequireRestarter]);
+    _inheritMany(A.Object, [A.JS_CONST, J.Interceptor, J.ArrayIterator, A.Iterable, A.CastIterator, A.Closure, A.MapMixin, A.Error, A.SentinelValue, A.ListIterator, A.Iterator, A.EmptyIterator, A.FixedLengthListMixin, A.UnmodifiableListMixin, A._ListBase_Object_ListMixin, A.Symbol, A.MapView, A.ConstantMap, A.JSInvocationMirror, A.TypeErrorDecoder, A.NullThrownFromJavaScriptException, A.ExceptionAndStackTrace, A._StackTrace, A._Required, A.LinkedHashMapCell, A.LinkedHashMapKeyIterator, A.JSSyntaxRegExp, A._MatchImplementation, A._AllMatchesIterator, A.StringMatch, A._StringAllMatchesIterator, A._Cell, A.Rti, A._FunctionParameters, A._Type, A._TimerImpl, A._AsyncAwaitCompleter, A.AsyncError, A._Completer, A._FutureListener, A._Future, A._AsyncCallbackEntry, A.Stream, A.StreamTransformerBase, A._StreamController, A._SyncStreamControllerDispatch, A._AsyncStreamControllerDispatch, A._BufferingStreamSubscription, A._StreamSinkWrapper, A._DelayedEvent, A._DelayedDone, A._PendingEvents, A._StreamIterator, A._ZoneFunction, A._ZoneSpecification, A._ZoneDelegate, A._Zone, A._HashMapKeyIterator, A.__SetBase_Object_SetMixin, A._HashSetIterator, A._LinkedHashSetCell, A._LinkedHashSetIterator, A.IterableMixin, A.ListMixin, A._UnmodifiableMapMixin, A._ListQueueIterator, A.SetMixin, A._SplayTreeNode, A._SplayTree, A._SplayTreeIterator, A.Codec, A._JsonStringifier, A._Utf8Encoder, A._BigIntImpl, A.DateTime, A.Duration, A.OutOfMemoryError, A.StackOverflowError, A._Exception, A.FormatException, A.IntegerDivisionByZeroException, A.Null, A._StringStackTrace, A.StringBuffer, A._Uri, A.UriData, A._SimpleUri, A.Expando, A.CssStyleDeclarationBase, A.EventStreamProvider, A._EventStreamSubscription, A._Html5NodeValidator, A.ImmutableListMixin, A.NodeValidatorBuilder, A._SimpleNodeValidator, A._SvgNodeValidator, A.FixedSizeListIterator, A._DOMWindowCrossFrame, A._SameOriginUriPolicy, A._ValidatingTreeSanitizer, A._StructuredClone, A._AcceptStructuredClone, A.JsObject, A.NullRejectionException, A._JSRandom, A._Random, A.AsyncMemoizer, A.DelegatingStreamSink, A.ErrorResult, A.ValueResult, A.StreamQueue, A._NextRequest, A._HasNextRequest, A.CopyOnWriteList, A.BuiltList, A.ListBuilder, A.BuiltListMultimap, A.ListMultimapBuilder, A.BuiltMap, A.MapBuilder, A.BuiltSet, A.SetBuilder, A.BuiltSetMultimap, A.SetMultimapBuilder, A.EnumClass, A.IndentingBuiltValueToStringHelper, A.JsonObject, A.FullType, A.BigIntSerializer, A.BoolSerializer, A.BuiltJsonSerializers, A.BuiltJsonSerializersBuilder, A.BuiltListMultimapSerializer, A.BuiltListSerializer, A.BuiltMapSerializer, A.BuiltSetMultimapSerializer, A.BuiltSetSerializer, A.DateTimeSerializer, A.DoubleSerializer, A.DurationSerializer, A.Int64Serializer, A.IntSerializer, A.JsonObjectSerializer, A.NullSerializer, A.NumSerializer, A.RegExpSerializer, A.StringSerializer, A.UriSerializer, A.DefaultEquality, A.IterableEquality, A.ListEquality, A._UnorderedEquality, A._MapEntry, A.MapEquality, A.DeepCollectionEquality, A._QueueList_Object_ListMixin, A.BuildResult, A._$BuildStatusSerializer, A._$BuildResultSerializer, A.BuildResultBuilder, A.ConnectRequest, A._$ConnectRequestSerializer, A.ConnectRequestBuilder, A.DebugEvent, A.BatchedDebugEvents, A._$DebugEventSerializer, A._$BatchedDebugEventsSerializer, A.DebugEventBuilder, A.BatchedDebugEventsBuilder, A.DebugInfo, A._$DebugInfoSerializer, A.DebugInfoBuilder, A.DevToolsRequest, A.DevToolsResponse, A._$DevToolsRequestSerializer, A._$DevToolsResponseSerializer, A.DevToolsRequestBuilder, A.DevToolsResponseBuilder, A.ErrorResponse, A._$ErrorResponseSerializer, A.ErrorResponseBuilder, A.ExtensionRequest, A.ExtensionResponse, A.ExtensionEvent, A.BatchedEvents, A._$ExtensionRequestSerializer, A._$ExtensionResponseSerializer, A._$ExtensionEventSerializer, A._$BatchedEventsSerializer, A.ExtensionRequestBuilder, A.ExtensionResponseBuilder, A.ExtensionEventBuilder, A.BatchedEventsBuilder, A.IsolateExit, A.IsolateStart, A._$IsolateExitSerializer, A._$IsolateStartSerializer, A.IsolateExitBuilder, A.IsolateStartBuilder, A.RegisterEvent, A._$RegisterEventSerializer, A.RegisterEventBuilder, A.RunRequest, A._$RunRequestSerializer, A.BatchedStreamController, A.SocketClient, A.Int64, A.Level, A.LogRecord, A.Logger, A.Pool, A.PoolResource, A.StreamChannelMixin, A._GuaranteeSink, A.StreamChannelController, A.Uuid, A.WebSocketChannelException, A.LegacyRestarter, A.ReloadingManager, A.HotReloadFailedException, A.RequireRestarter]);
     _inheritMany(J.Interceptor, [J.JSBool, J.JSNull, J.JavaScriptObject, J.JSNumber, J.JSString]);
     _inheritMany(J.JavaScriptObject, [J.LegacyJavaScriptObject, J.JSArray, A.NativeByteBuffer, A.NativeTypedData, A.EventTarget, A.AccessibleNodeList, A.Blob, A.Event, A.CssTransformComponent, A.CssRule, A._CssStyleDeclaration_JavaScriptObject_CssStyleDeclarationBase, A.CssStyleValue, A.DataTransferItemList, A.DomException, A.DomImplementation, A._DomRectList_JavaScriptObject_ListMixin, A.DomRectReadOnly, A._DomStringList_JavaScriptObject_ListMixin, A.DomTokenList, A._FileList_JavaScriptObject_ListMixin, A.Gamepad, A.History, A._HtmlCollection_JavaScriptObject_ListMixin, A.ImageData, A.Location, A.MediaList, A._MidiInputMap_JavaScriptObject_MapMixin, A._MidiOutputMap_JavaScriptObject_MapMixin, A.MimeType, A._MimeTypeArray_JavaScriptObject_ListMixin, A._NodeList_JavaScriptObject_ListMixin, A.Plugin, A._PluginArray_JavaScriptObject_ListMixin, A._RtcStatsReport_JavaScriptObject_MapMixin, A.SharedArrayBuffer, A.SpeechGrammar, A._SpeechGrammarList_JavaScriptObject_ListMixin, A.SpeechRecognitionResult, A._Storage_JavaScriptObject_MapMixin, A.StyleSheet, A._TextTrackCueList_JavaScriptObject_ListMixin, A.TimeRanges, A.Touch, A._TouchList_JavaScriptObject_ListMixin, A.TrackDefaultList, A.Url, A.__CssRuleList_JavaScriptObject_ListMixin, A.__GamepadList_JavaScriptObject_ListMixin, A.__NamedNodeMap_JavaScriptObject_ListMixin, A.__SpeechRecognitionResultList_JavaScriptObject_ListMixin, A.__StyleSheetList_JavaScriptObject_ListMixin, A.KeyRange, A.Length, A._LengthList_JavaScriptObject_ListMixin, A.Number, A._NumberList_JavaScriptObject_ListMixin, A.PointList, A._StringList_JavaScriptObject_ListMixin, A.Transform, A._TransformList_JavaScriptObject_ListMixin, A.AudioBuffer, A._AudioParamMap_JavaScriptObject_MapMixin]);
     _inheritMany(J.LegacyJavaScriptObject, [J.PlainJavaScriptObject, J.UnknownJavaScriptObject, J.JavaScriptFunction, A._FetchOptions, A.Promise, A.RequireLoader, A.JsError, A.JsMap]);
@@ -25569,7 +25721,7 @@
     _inheritMany(A._CastIterableBase, [A.CastIterable, A.__CastListBase__CastIterableBase_ListMixin, A.CastSet, A.CastQueue]);
     _inherit(A._EfficientLengthCastIterable, A.CastIterable);
     _inherit(A._CastListBase, A.__CastListBase__CastIterableBase_ListMixin);
-    _inheritMany(A.Closure, [A.Closure2Args, A.Closure0Args, A.TearOffClosure, A.initHooks_closure, A.initHooks_closure1, A._AsyncRun__initializeScheduleImmediate_internalCallback, A._AsyncRun__initializeScheduleImmediate_closure, A._awaitOnObject_closure, A._Future__chainForeignFuture_closure, A._Future__propagateToListeners_handleWhenCompleteCallback_closure, A._Future_timeout_closure0, A.Stream_length_closure, A.Stream_first_closure0, A._CustomZone_bindUnaryCallback_closure, A._CustomZone_bindUnaryCallbackGuarded_closure, A._RootZone_bindUnaryCallback_closure, A._RootZone_bindUnaryCallbackGuarded_closure, A.runZonedGuarded_closure, A._CustomHashMap_closure, A._LinkedCustomHashMap_closure, A.SplayTreeSet_closure, A._BigIntImpl_hashCode_finish, A._Uri__makePath_closure, A._createTables_setChars, A._createTables_setRange, A.Element_Element$html_closure, A.HttpRequest_request_closure, A._EventStreamSubscription_closure, A._EventStreamSubscription_onData_closure, A.NodeValidatorBuilder_allowsElement_closure, A.NodeValidatorBuilder_allowsAttribute_closure, A._SimpleNodeValidator_closure, A._SimpleNodeValidator_closure0, A._TemplatingNodeValidator_closure, A._convertDartToNative_Value_closure, A.JsObject__convertDataTree__convert, A._convertToJS_closure, A._convertToJS_closure0, A._wrapToDart_closure, A._wrapToDart_closure0, A._wrapToDart_closure1, A.promiseToFuture_closure, A.promiseToFuture_closure0, A.StreamQueue__ensureListening_closure, A.BuiltListMultimap_BuiltListMultimap_closure, A.BuiltListMultimap_hashCode_closure, A.ListMultimapBuilder_replace_closure, A.BuiltMap_BuiltMap_closure, A.BuiltMap_hashCode_closure, A.BuiltSet_hashCode_closure, A.BuiltSetMultimap_hashCode_closure, A.SetMultimapBuilder_replace_closure, A.newBuiltValueToStringHelper_closure, A.BuiltListMultimapSerializer_serialize_closure, A.BuiltListMultimapSerializer_deserialize_closure, A.BuiltListSerializer_serialize_closure, A.BuiltListSerializer_deserialize_closure, A.BuiltSetMultimapSerializer_serialize_closure, A.BuiltSetMultimapSerializer_deserialize_closure, A.BuiltSetSerializer_serialize_closure, A.BuiltSetSerializer_deserialize_closure, A.WebSocketClient_stream_closure, A.stronglyConnectedComponents_strongConnect, A.Pool__runOnRelease_closure, A.SseClient_closure0, A.SseClient_closure1, A.generateUuidV4__generateBits, A._GuaranteeSink__addError_closure, A.HtmlWebSocketChannel_closure, A.HtmlWebSocketChannel_closure0, A.HtmlWebSocketChannel_closure1, A.HtmlWebSocketChannel_closure2, A.main__closure, A.main__closure0, A.main___closure2, A.main___closure1, A.main__closure2, A.main___closure0, A.main___closure, A.main__closure4, A.main__closure5, A.main__closure6, A.main__closure7, A._launchCommunicationWithDebugExtension_closure, A._listenForDebugExtensionAuthRequest_closure, A.LegacyRestarter_restart_closure, A.LegacyRestarter_restart_closure0, A.toFuture_closure, A.RequireRestarter__reloadModule_closure]);
+    _inheritMany(A.Closure, [A.Closure2Args, A.Closure0Args, A.TearOffClosure, A.initHooks_closure, A.initHooks_closure1, A._AsyncRun__initializeScheduleImmediate_internalCallback, A._AsyncRun__initializeScheduleImmediate_closure, A._awaitOnObject_closure, A._Future__chainForeignFuture_closure, A._Future__propagateToListeners_handleWhenCompleteCallback_closure, A._Future_timeout_closure0, A.Stream_length_closure, A.Stream_first_closure0, A._CustomZone_bindUnaryCallback_closure, A._CustomZone_bindUnaryCallbackGuarded_closure, A._RootZone_bindUnaryCallback_closure, A._RootZone_bindUnaryCallbackGuarded_closure, A.runZonedGuarded_closure, A._CustomHashMap_closure, A._LinkedCustomHashMap_closure, A.SplayTreeSet_closure, A._BigIntImpl_hashCode_finish, A._Uri__makePath_closure, A._createTables_setChars, A._createTables_setRange, A.Element_Element$html_closure, A.HttpRequest_request_closure, A._EventStreamSubscription_closure, A._EventStreamSubscription_onData_closure, A.NodeValidatorBuilder_allowsElement_closure, A.NodeValidatorBuilder_allowsAttribute_closure, A._SimpleNodeValidator_closure, A._SimpleNodeValidator_closure0, A._TemplatingNodeValidator_closure, A._convertDartToNative_Value_closure, A.JsObject__convertDataTree__convert, A._convertToJS_closure, A._convertToJS_closure0, A._wrapToDart_closure, A._wrapToDart_closure0, A._wrapToDart_closure1, A.promiseToFuture_closure, A.promiseToFuture_closure0, A.StreamQueue__ensureListening_closure, A.BuiltListMultimap_BuiltListMultimap_closure, A.BuiltListMultimap_hashCode_closure, A.ListMultimapBuilder_replace_closure, A.BuiltMap_BuiltMap_closure, A.BuiltMap_hashCode_closure, A.BuiltSet_hashCode_closure, A.BuiltSetMultimap_hashCode_closure, A.SetMultimapBuilder_replace_closure, A.newBuiltValueToStringHelper_closure, A.BuiltListMultimapSerializer_serialize_closure, A.BuiltListMultimapSerializer_deserialize_closure, A.BuiltListSerializer_serialize_closure, A.BuiltListSerializer_deserialize_closure, A.BuiltSetMultimapSerializer_serialize_closure, A.BuiltSetMultimapSerializer_deserialize_closure, A.BuiltSetSerializer_serialize_closure, A.BuiltSetSerializer_deserialize_closure, A.WebSocketClient_stream_closure, A.stronglyConnectedComponents_strongConnect, A.Pool__runOnRelease_closure, A.SseClient_closure0, A.SseClient_closure1, A.generateUuidV4__generateBits, A._GuaranteeSink__addError_closure, A.HtmlWebSocketChannel_closure, A.HtmlWebSocketChannel_closure0, A.HtmlWebSocketChannel_closure1, A.HtmlWebSocketChannel_closure2, A.main__closure, A.main__closure0, A.main___closure2, A.main___closure1, A.main__closure2, A.main___closure0, A.main___closure, A.main__closure4, A.main__closure5, A.main__closure6, A.main__closure7, A._launchCommunicationWithDebugExtension_closure, A._listenForDebugExtensionAuthRequest_closure, A.LegacyRestarter_restart_closure0, A.LegacyRestarter_restart_closure, A.toFuture_closure, A.RequireRestarter__reloadModule_closure]);
     _inheritMany(A.Closure2Args, [A._CastListBase_sort_closure, A.CastMap_forEach_closure, A.ConstantMap_map_closure, A.Primitives_functionNoSuchMethod_closure, A.JsLinkedHashMap_addAll_closure, A.initHooks_closure0, A._awaitOnObject_closure0, A._wrapJsFunctionForAsync_closure, A._Future__chainForeignFuture_closure0, A._Future_timeout_closure1, A._BufferingStreamSubscription_asFuture_closure0, A.LinkedHashMap_LinkedHashMap$from_closure, A.MapBase_mapToString_closure, A.SplayTreeSet__newSet_closure, A._JsonStringifier_writeMap_closure, A._BigIntImpl_hashCode_combine, A._symbolMapToStringMap_closure, A.NoSuchMethodError_toString_closure, A.Uri__parseIPv4Address_error, A.Uri_parseIPv6Address_error, A.Uri_parseIPv6Address_parseHex, A._createTables_build, A.MidiInputMap_keys_closure, A.MidiOutputMap_keys_closure, A.RtcStatsReport_keys_closure, A.Storage_keys_closure, A._ValidatingTreeSanitizer_sanitizeTree_walk, A._StructuredClone_walk_closure, A._StructuredClone_walk_closure0, A._AcceptStructuredClone_walk_closure, A.convertDartToNative_Dictionary_closure, A.AudioParamMap_keys_closure, A.StreamQueue__ensureListening_closure1, A.hashObjects_closure, A.MapBuilder_replace_closure, A.safeUnawaited_closure, A.Pool__runOnRelease_closure0, A.generateUuidV4__printDigits, A.generateUuidV4__bitsDigits, A.main__closure1, A.main_closure0, A.toPromise_closure]);
     _inherit(A.CastList, A._CastListBase);
     _inherit(A.MapBase, A.MapMixin);
@@ -25678,7 +25830,6 @@
     _inherit(A.__StyleSheetList_JavaScriptObject_ListMixin_ImmutableListMixin, A.__StyleSheetList_JavaScriptObject_ListMixin);
     _inherit(A._StyleSheetList, A.__StyleSheetList_JavaScriptObject_ListMixin_ImmutableListMixin);
     _inherit(A._ElementAttributeMap, A._AttributeMap);
-    _inherit(A._EventStreamSubscription, A.StreamSubscription);
     _inherit(A._TemplatingNodeValidator, A._SimpleNodeValidator);
     _inherit(A._StructuredCloneDart2Js, A._StructuredClone);
     _inherit(A._AcceptStructuredCloneDart2Js, A._AcceptStructuredClone);
@@ -25797,7 +25948,7 @@
     leafTags: null,
     arrayRti: Symbol("$ti")
   };
-  A._Universe_addRules(init.typeUniverse, 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ength"],"ImmutableListMixin":["Length"],"List":["Length"],"EfficientLengthIterable":["Length"],"JSObject":[],"Iterable":["Length"],"ImmutableListMixin.E":"Length","ListMixin.E":"Length"},"NumberList":{"ListMixin":["Number"],"ImmutableListMixin":["Number"],"List":["Number"],"EfficientLengthIterable":["Number"],"JSObject":[],"Iterable":["Number"],"ImmutableListMixin.E":"Number","ListMixin.E":"Number"},"PointList":{"JSObject":[]},"ScriptElement0":{"SvgElement":[],"Element":[],"Node":[],"EventTarget":[],"JSObject":[]},"StringList":{"ListMixin":["String"],"ImmutableListMixin":["String"],"List":["String"],"EfficientLengthIterable":["String"],"JSObject":[],"Iterable":["String"],"ImmutableListMixin.E":"String","ListMixin.E":"String"},"SvgElement":{"Element":[],"Node":[],"EventTarget":[],"JSObject":[]},"TransformList":{"ListMixin":["Transform"],"ImmutableListMixin":["Transform"],"List":["Transform"],"EfficientLengthIterable":["Transform"],"JSObject":[],"Iterable":["Transform"],"ImmutableListMixin.E":"Transform","ListMixin.E":"Transform"},"AudioBuffer":{"JSObject":[]},"AudioParamMap":{"MapMixin":["String","@"],"JSObject":[],"Map":["String","@"],"MapMixin.K":"String","MapMixin.V":"@"},"AudioTrackList":{"EventTarget":[],"JSObject":[]},"BaseAudioContext":{"EventTarget":[],"JSObject":[]},"OfflineAudioContext":{"EventTarget":[],"JSObject":[]},"DelegatingStreamSink":{"StreamSink":["1"]},"ErrorResult":{"Result":["0&"]},"ValueResult":{"Result":["1"]},"_NextRequest":{"_EventRequest":["1"]},"_HasNextRequest":{"_EventRequest":["1"]},"CopyOnWriteList":{"List":["1"],"EfficientLengthIterable":["1"],"Iterable":["1"]},"BuiltList":{"Iterable":["1"]},"_BuiltList":{"BuiltList":["1"],"Iterable":["1"]},"_BuiltListMultimap":{"BuiltListMultimap":["1","2"]},"_BuiltMap":{"BuiltMap":["1","2"]},"BuiltSet":{"Iterable":["1"]},"_BuiltSet":{"BuiltSet":["1"],"Iterable":["1"]},"_BuiltSetMultimap":{"BuiltSetMultimap":["1","2"]},"BuiltValueNullFieldError":{"Error":[]},"BuiltValueNestedFieldError":{"Error":[]},"BoolJsonObject":{"JsonObject":[]},"ListJsonObject":{"JsonObject":[]},"MapJsonObject":{"JsonObject":[]},"NumJsonObject":{"JsonObject":[]},"StringJsonObject":{"JsonObject":[]},"DeserializationError":{"Error":[]},"BigIntSerializer":{"PrimitiveSerializer":["BigInt"],"Serializer":["BigInt"]},"BoolSerializer":{"PrimitiveSerializer":["bool"],"Serializer":["bool"]},"BuiltJsonSerializers":{"Serializers":[]},"BuiltListMultimapSerializer":{"StructuredSerializer":["BuiltListMultimap<@,@>"],"Serializer":["BuiltListMultimap<@,@>"]},"BuiltListSerializer":{"StructuredSerializer":["BuiltList<@>"],"Serializer":["BuiltList<@>"]},"BuiltMapSerializer":{"StructuredSerializer":["BuiltMap<@,@>"],"Serializer":["BuiltMap<@,@>"]},"BuiltSetMultimapSerializer":{"StructuredSerializer":["BuiltSetMultimap<@,@>"],"Serializer":["BuiltSetMultimap<@,@>"]},"BuiltSetSerializer":{"StructuredSerializer":["BuiltSet<@>"],"Serializer":["BuiltSet<@>"]},"DateTimeSerializer":{"PrimitiveSerializer":["DateTime"],"Serializer":["DateTime"]},"DoubleSerializer":{"PrimitiveSerializer":["double"],"Serializer":["double"]},"DurationSerializer":{"PrimitiveSerializer":["Duration"],"Serializer":["Duration"]},"Int64Serializer":{"PrimitiveSerializer":["Int64"],"Serializer":["Int64"]},"IntSerializer":{"PrimitiveSerializer":["int"],"Serializer":["int"]},"JsonObjectSerializer":{"PrimitiveSerializer":["JsonObject"],"Serializer":["JsonObject"]},"NullSerializer":{"PrimitiveSerializer":["Null"],"Serializer":["Null"]},"NumSerializer":{"PrimitiveSerializer":["num"],"Serializer":["num"]},"RegExpSerializer":{"PrimitiveSerializer":["RegExp"],"Serializer":["RegExp"]},"StringSerializer":{"PrimitiveSerializer":["String"],"Serializer":["String"]},"UriSerializer":{"PrimitiveSerializer":["Uri"],"Serializer":["Uri"]},"DefaultEquality":{"Equality":["1"]},"IterableEquality":{"Equality":["Iterable<1>"]},"ListEquality":{"Equality":["List<1>"]},"_UnorderedEquality":{"Equality":["2"]},"SetEquality":{"_UnorderedEquality":["1","Set<1>"],"Equality":["Set<1>"],"_UnorderedEquality.E":"1","_UnorderedEquality.T":"Set<1>"},"MapEquality":{"Equality":["Map<1,2>"]},"DeepCollectionEquality":{"Equality":["@"]},"QueueList":{"ListMixin":["1"],"List":["1"],"Queue":["1"],"EfficientLengthIterable":["1"],"Iterable":["1"],"ListMixin.E":"1","QueueList.E":"1"},"_CastQueueList":{"QueueList":["2"],"ListMixin":["2"],"List":["2"],"Queue":["2"],"EfficientLengthIterable":["2"],"Iterable":["2"],"ListMixin.E":"2","QueueList.E":"2"},"_$BuildStatusSerializer":{"PrimitiveSerializer":["BuildStatus"],"Serializer":["BuildStatus"]},"_$BuildResultSerializer":{"StructuredSerializer":["BuildResult"],"Serializer":["BuildResult"]},"_$BuildResult":{"BuildResult":[]},"_$ConnectRequestSerializer":{"StructuredSerializer":["ConnectRequest"],"Serializer":["ConnectRequest"]},"_$ConnectRequest":{"ConnectRequest":[]},"_$DebugEventSerializer":{"StructuredSerializer":["DebugEvent"],"Serializer":["DebugEvent"]},"_$BatchedDebugEventsSerializer":{"StructuredSerializer":["BatchedDebugEvents"],"Serializer":["BatchedDebugEvents"]},"_$DebugEvent":{"DebugEvent":[]},"_$BatchedDebugEvents":{"BatchedDebugEvents":[]},"_$DebugInfoSerializer":{"StructuredSerializer":["DebugInfo"],"Serializer":["DebugInfo"]},"_$DebugInfo":{"DebugInfo":[]},"_$DevToolsRequestSerializer":{"StructuredSerializer":["DevToolsRequest"],"Serializer":["DevToolsRequest"]},"_$DevToolsResponseSerializer":{"StructuredSerializer":["DevToolsResponse"],"Serializer":["DevToolsResponse"]},"_$DevToolsRequest":{"DevToolsRequest":[]},"_$DevToolsResponse":{"DevToolsResponse":[]},"_$ErrorResponseSerializer":{"StructuredSerializer":["ErrorResponse"],"Serializer":["ErrorResponse"]},"_$ErrorResponse":{"ErrorResponse":[]},"_$ExtensionRequestSerializer":{"StructuredSerializer":["ExtensionRequest"],"Serializer":["ExtensionRequest"]},"_$ExtensionResponseSerializer":{"StructuredSerializer":["ExtensionResponse"],"Serializer":["ExtensionResponse"]},"_$ExtensionEventSerializer":{"StructuredSerializer":["ExtensionEvent"],"Serializer":["ExtensionEvent"]},"_$BatchedEventsSerializer":{"StructuredSerializer":["BatchedEvents"],"Serializer":["BatchedEvents"]},"_$ExtensionRequest":{"ExtensionRequest":[]},"_$ExtensionResponse":{"ExtensionResponse":[]},"_$ExtensionEvent":{"ExtensionEvent":[]},"_$BatchedEvents":{"BatchedEvents":[]},"_$IsolateExitSerializer":{"StructuredSerializer":["IsolateExit"],"Serializer":["IsolateExit"]},"_$IsolateStartSerializer":{"StructuredSerializer":["IsolateStart"],"Serializer":["IsolateStart"]},"_$IsolateExit":{"IsolateExit":[]},"_$IsolateStart":{"IsolateStart":[]},"_$RegisterEventSerializer":{"StructuredSerializer":["RegisterEvent"],"Serializer":["RegisterEvent"]},"_$RegisterEvent":{"RegisterEvent":[]},"_$RunRequestSerializer":{"StructuredSerializer":["RunRequest"],"Serializer":["RunRequest"]},"_$RunRequest":{"RunRequest":[]},"SseSocketClient":{"SocketClient":[]},"WebSocketClient":{"SocketClient":[]},"Int64":{"Comparable":["Object"]},"Level":{"Comparable":["Level"]},"SseClient":{"StreamChannel":["String?"]},"GuaranteeChannel":{"StreamChannel":["1"]},"_GuaranteeSink":{"StreamSink":["1"]},"StreamChannelMixin":{"StreamChannel":["1"]},"HtmlWebSocketChannel":{"WebSocketChannel":[],"StreamChannel":["@"]},"_HtmlWebSocketSink":{"WebSocketSink":[],"DelegatingStreamSink":["@"],"StreamSink":["@"],"DelegatingStreamSink.T":"@"},"WebSocketChannel":{"StreamChannel":["@"]},"LegacyRestarter":{"Restarter":[]},"RequireRestarter":{"Restarter":[]},"ByteData":{"TypedData":[]},"Int8List":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Uint8List":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Uint8ClampedList":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Int16List":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Uint16List":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Int32List":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Uint32List":{"List":["int"],"EfficientLengthIterable":["int"],"Iterable":["int"],"TypedData":[]},"Float32List":{"List":["double"],"EfficientLengthIterable":["double"],"Iterable":["double"],"TypedData":[]},"Float64List":{"List":["double"],"EfficientLengthIterable":["double"],"Iterable":["double"],"TypedData":[]}}'));
   A._Universe_addErasedTypes(init.typeUniverse, JSON.parse('{"UnmodifiableListBase":1,"__CastListBase__CastIterableBase_ListMixin":2,"NativeTypedArray":1,"StreamTransformerBase":2,"_DelayedEvent":1,"IterableBase":1,"ListBase":1,"MapBase":2,"_ListBase_Object_ListMixin":1,"_SplayTreeSet__SplayTree_IterableMixin":1,"_SplayTreeSet__SplayTree_IterableMixin_SetMixin":1,"__SetBase_Object_SetMixin":1,"MapEntry":2,"_JsArray_JsObject_ListMixin":1,"_QueueList_Object_ListMixin":1,"StreamChannelMixin":1}'));
   var string$ = {
     Error_: "Error handler must accept one Object or one Object and a StackTrace as arguments, and return a value of the returned future's type",
@@ -26024,8 +26175,6 @@
       nullable__LinkedHashSetCell: findType("_LinkedHashSetCell?"),
       nullable_dynamic_Function_Event: findType("@(Event)?"),
       nullable_int_Function_Node_Node: findType("int(Node,Node)?"),
-      nullable_nullable_Object_Function_2_nullable_Object_and_nullable_Object: findType("Object?(Object?,Object?)?"),
-      nullable_nullable_Object_Function_dynamic: findType("Object?(@)?"),
       nullable_void_Function: findType("~()?"),
       nullable_void_Function_BatchedDebugEventsBuilder: findType("~(BatchedDebugEventsBuilder)?"),
       nullable_void_Function_ConnectRequestBuilder: findType("~(ConnectRequestBuilder)?"),
@@ -26033,8 +26182,6 @@
       nullable_void_Function_DebugInfoBuilder: findType("~(DebugInfoBuilder)?"),
       nullable_void_Function_DevToolsRequestBuilder: findType("~(DevToolsRequestBuilder)?"),
       nullable_void_Function_Event: findType("~(Event)?"),
-      nullable_void_Function_IsolateExitBuilder: findType("~(IsolateExitBuilder)?"),
-      nullable_void_Function_IsolateStartBuilder: findType("~(IsolateStartBuilder)?"),
       nullable_void_Function_KeyboardEvent: findType("~(KeyboardEvent)?"),
       nullable_void_Function_MessageEvent: findType("~(MessageEvent)?"),
       nullable_void_Function_ProgressEvent: findType("~(ProgressEvent)?"),
diff --git a/dwds/lib/src/services/batched_expression_evaluator.dart b/dwds/lib/src/services/batched_expression_evaluator.dart
index 9c35004..cadd0c7 100644
--- a/dwds/lib/src/services/batched_expression_evaluator.dart
+++ b/dwds/lib/src/services/batched_expression_evaluator.dart
@@ -61,7 +61,7 @@
   ) async {
     if (_closed) {
       return createError(
-        ErrorKind.internal,
+        EvaluationErrorKind.internal,
         'Batched expression evaluator closed',
       );
     }
@@ -141,8 +141,10 @@
 
       final listId = list.objectId;
       if (listId == null) {
-        final error =
-            createError(ErrorKind.internal, 'No batch result object ID.');
+        final error = createError(
+          EvaluationErrorKind.internal,
+          'No batch result object ID.',
+        );
         request.completer.complete(error);
       } else {
         safeUnawaited(
diff --git a/dwds/lib/src/services/chrome_proxy_service.dart b/dwds/lib/src/services/chrome_proxy_service.dart
index bd4a11f..398dfb8 100644
--- a/dwds/lib/src/services/chrome_proxy_service.dart
+++ b/dwds/lib/src/services/chrome_proxy_service.dart
@@ -489,8 +489,8 @@
 
       // Handle compilation errors, internal errors,
       // and reference errors from JavaScript evaluation in chrome.
-      if (result.type.contains('Error')) {
-        if (!result.type.startsWith('CompilationError')) {
+      if (_hasEvaluationError(result.type)) {
+        if (_hasReportableEvaluationError(result.type)) {
           _logger.warning('Failed to evaluate expression \'$expression\': '
               '${result.type}: ${result.value}.');
 
@@ -519,6 +519,20 @@
     }
   }
 
+  bool _hasEvaluationError(String type) => type.contains('Error');
+
+  // Decides if the error is serious enough to be shown to the user
+  // to encourage bug reporting.
+  bool _hasReportableEvaluationError(String type) {
+    if (!_hasEvaluationError(type)) return false;
+
+    if (type == EvaluationErrorKind.compilation ||
+        type == EvaluationErrorKind.asyncFrame) {
+      return false;
+    }
+    return true;
+  }
+
   @override
   Future<Response> evaluate(
     String isolateId,
diff --git a/dwds/lib/src/services/expression_evaluator.dart b/dwds/lib/src/services/expression_evaluator.dart
index 8aac6a6..1e1be6f 100644
--- a/dwds/lib/src/services/expression_evaluator.dart
+++ b/dwds/lib/src/services/expression_evaluator.dart
@@ -13,19 +13,16 @@
 import 'package:logging/logging.dart';
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';
 
-class ErrorKind {
-  const ErrorKind._(this._kind);
+class EvaluationErrorKind {
+  EvaluationErrorKind._();
 
-  final String _kind;
-  static const ErrorKind compilation = ErrorKind._('CompilationError');
-  static const ErrorKind type = ErrorKind._('TypeError');
-  static const ErrorKind reference = ErrorKind._('ReferenceError');
-  static const ErrorKind internal = ErrorKind._('InternalError');
-  static const ErrorKind invalidInput = ErrorKind._('InvalidInputError');
-  static const ErrorKind loadModule = ErrorKind._('LoadModuleError');
-
-  @override
-  String toString() => _kind;
+  static const compilation = 'CompilationError';
+  static const type = 'TypeError';
+  static const reference = 'ReferenceError';
+  static const internal = 'InternalError';
+  static const asyncFrame = 'AsyncFrameError';
+  static const invalidInput = 'InvalidInputError';
+  static const loadModule = 'LoadModuleError';
 }
 
 /// ExpressionEvaluator provides functionality to evaluate dart expressions
@@ -62,9 +59,12 @@
     this._compiler,
   );
 
-  RemoteObject createError(ErrorKind severity, String message) {
+  /// Create and error with [severity] and [message]
+  ///
+  /// [severity] is one of kinds in [EvaluationErrorKind]
+  RemoteObject createError(String severity, String message) {
     return RemoteObject(
-      <String, String>{'type': '$severity', 'value': message},
+      <String, String>{'type': severity, 'value': message},
     );
   }
 
@@ -90,22 +90,34 @@
     Map<String, String>? scope,
   ) async {
     if (_closed) {
-      return createError(ErrorKind.internal, 'expression evaluator closed.');
+      return createError(
+        EvaluationErrorKind.internal,
+        'expression evaluator closed.',
+      );
     }
 
     scope ??= {};
 
     if (expression.isEmpty) {
-      return createError(ErrorKind.invalidInput, expression);
+      return createError(
+        EvaluationErrorKind.invalidInput,
+        expression,
+      );
     }
 
     if (libraryUri == null) {
-      return createError(ErrorKind.invalidInput, 'no library uri');
+      return createError(
+        EvaluationErrorKind.invalidInput,
+        'no library uri',
+      );
     }
 
     final module = await _modules.moduleForLibrary(libraryUri);
     if (module == null) {
-      return createError(ErrorKind.internal, 'no module for $libraryUri');
+      return createError(
+        EvaluationErrorKind.internal,
+        'no module for $libraryUri',
+      );
     }
 
     // Wrap the expression in a lambda so we can call it as a function.
@@ -166,20 +178,20 @@
       // TODO(annagrin): Implement scope support.
       // Issue: https://github.com/dart-lang/webdev/issues/1344
       return createError(
-          ErrorKind.internal,
+          EvaluationErrorKind.internal,
           'Using scope for expression evaluation in frame '
           'is not supported.');
     }
 
     if (expression.isEmpty) {
-      return createError(ErrorKind.invalidInput, expression);
+      return createError(EvaluationErrorKind.invalidInput, expression);
     }
 
     // Get JS scope and current JS location.
     final jsFrame = _debugger.jsFrameForIndex(frameIndex);
     if (jsFrame == null) {
       return createError(
-          ErrorKind.internal,
+          EvaluationErrorKind.asyncFrame,
           'Expression evaluation in async frames '
           'is not supported. No frame with index $frameIndex.');
     }
@@ -194,14 +206,14 @@
     final url = _debugger.urlForScriptId(jsScriptId);
     if (url == null) {
       return createError(
-        ErrorKind.internal,
+        EvaluationErrorKind.internal,
         'Cannot find url for JS script: $jsScriptId',
       );
     }
     final locationMap = await _locations.locationForJs(url, jsLine, jsColumn);
     if (locationMap == null) {
       return createError(
-          ErrorKind.internal,
+          EvaluationErrorKind.internal,
           'Cannot find Dart location for JS location: '
           'url: $url, '
           'function: $functionName, '
@@ -214,7 +226,7 @@
     final libraryUri = await _modules.libraryForSource(dartSourcePath);
     if (libraryUri == null) {
       return createError(
-        ErrorKind.internal,
+        EvaluationErrorKind.internal,
         'no libraryUri for $dartSourcePath',
       );
     }
@@ -222,7 +234,7 @@
     final module = await _modules.moduleForLibrary(libraryUri.toString());
     if (module == null) {
       return createError(
-        ErrorKind.internal,
+        EvaluationErrorKind.internal,
         'no module for $libraryUri ($dartSourcePath)',
       );
     }
@@ -283,10 +295,10 @@
     }
     if (error.contains('InternalError: ')) {
       error = error.replaceAll('InternalError: ', '');
-      return createError(ErrorKind.internal, error);
+      return createError(EvaluationErrorKind.internal, error);
     }
     error = error.replaceAll(_syntheticNameFilterRegex, '');
-    return createError(ErrorKind.compilation, error);
+    return createError(EvaluationErrorKind.compilation, error);
   }
 
   Future<RemoteObject> _formatEvaluationError(RemoteObject result) async {
@@ -294,10 +306,10 @@
       var error = '${result.value}';
       if (error.startsWith('ReferenceError: ')) {
         error = error.replaceFirst('ReferenceError: ', '');
-        return createError(ErrorKind.reference, error);
+        return createError(EvaluationErrorKind.reference, error);
       } else if (error.startsWith('TypeError: ')) {
         error = error.replaceFirst('TypeError: ', '');
-        return createError(ErrorKind.type, error);
+        return createError(EvaluationErrorKind.type, error);
       } else if (error.startsWith('NetworkError: ')) {
         var modulePath = _loadModuleErrorRegex.firstMatch(error)?.group(1);
         final module = modulePath != null
@@ -310,7 +322,7 @@
         error = 'Module is not loaded : $module (path: $modulePath). '
             'Accessing libraries that have not yet been used in the '
             'application is not supported during expression evaluation.';
-        return createError(ErrorKind.loadModule, error);
+        return createError(EvaluationErrorKind.loadModule, error);
       }
     }
     return result;
diff --git a/dwds/test/evaluate_common.dart b/dwds/test/evaluate_common.dart
index e76ae4c..7f0ee77 100644
--- a/dwds/test/evaluate_common.dart
+++ b/dwds/test/evaluate_common.dart
@@ -6,10 +6,12 @@
 @Timeout(Duration(minutes: 2))
 import 'dart:async';
 
+import 'package:dwds/src/services/expression_evaluator.dart';
 import 'package:test/test.dart';
 import 'package:test_common/logging.dart';
 import 'package:test_common/test_sdk_configuration.dart';
 import 'package:vm_service/vm_service.dart';
+import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';
 
 import 'fixtures/context.dart';
 import 'fixtures/project.dart';
@@ -85,9 +87,22 @@
         late ScriptRef testLibraryScript;
         late ScriptRef testLibraryPartScript;
         late Stream<Event> stream;
+        late StreamController<String> output;
 
         setUp(() async {
-          setCurrentLogWriter(debug: debug);
+          output = StreamController<String>.broadcast();
+          output.stream.listen(debug ? print : printOnFailure);
+
+          configureLogWriter(
+            customLogWriter: (level, message, {error, loggerName, stackTrace}) {
+              final e = error == null ? '' : ': $error';
+              final s = stackTrace == null ? '' : ':\n$stackTrace';
+              if (!output.isClosed) {
+                output.add('[$level] $loggerName: $message$e$s');
+              }
+            },
+          );
+
           vm = await context.service.getVM();
           isolate = await context.service.getIsolate(vm.isolates!.first.id!);
           isolateId = isolate.id!;
@@ -114,7 +129,10 @@
         });
 
         tearDown(() async {
-          await context.service.resume(isolateId);
+          await output.close();
+          try {
+            await context.service.resume(isolateId);
+          } catch (_) {}
         });
 
         test(
@@ -687,12 +705,75 @@
               isA<ErrorRef>().having(
                 (instance) => instance.message,
                 'message',
-                contains('CompilationError:'),
+                contains(EvaluationErrorKind.compilation),
               ),
             );
           });
         });
 
+        test('async frame error', () async {
+          final maxAttempts = 100;
+
+          Response? error;
+          String? breakpointId;
+          try {
+            // Pause in client.js directly to force pausing in async code.
+            breakpointId = await _setBreakpointInInjectedClient(
+              context.tabConnection.debugger,
+            );
+
+            var attempt = 0;
+            do {
+              try {
+                await context.service.resume(isolateId);
+              } catch (_) {}
+
+              final event = stream.firstWhere(
+                (event) => event.kind == EventKind.kPauseInterrupted,
+              );
+              final frame = (await event).topFrame;
+              if (frame != null) {
+                error = await context.service.evaluateInFrame(
+                  isolateId,
+                  frame.index!,
+                  'true',
+                );
+              }
+              expect(
+                attempt,
+                lessThan(maxAttempts),
+                reason:
+                    'Failed to receive and async frame error in $attempt attempts',
+              );
+              await (Future.delayed(const Duration(milliseconds: 10)));
+              attempt++;
+            } while (error is! ErrorRef);
+          } finally {
+            if (breakpointId != null) {
+              await context.tabConnection.debugger
+                  .removeBreakpoint(breakpointId);
+            }
+          }
+
+          // Verify we receive an error when evaluating
+          // on async frame.
+          expect(
+            error,
+            isA<ErrorRef>().having(
+              (instance) => instance.message,
+              'message',
+              contains(EvaluationErrorKind.asyncFrame),
+            ),
+          );
+
+          // Verify we don't emit errors or warnings
+          // on async frame evaluations.
+          output.stream.listen((event) {
+            expect(event, isNot(contains('[WARNING]')));
+            expect(event, isNot(contains('[SEVERE]')));
+          });
+        });
+
         test(
           'module load error',
           () async {
@@ -712,7 +793,7 @@
                 isA<ErrorRef>().having(
                   (instance) => instance.message,
                   'message',
-                  contains('LoadModuleError:'),
+                  contains(EvaluationErrorKind.loadModule),
                 ),
               );
             });
@@ -946,3 +1027,24 @@
       variable.name: variable.value as InstanceRef?,
   };
 }
+
+Future<String> _setBreakpointInInjectedClient(WipDebugger debugger) async {
+  final client = 'dwds/src/injected/client.js';
+  final clientScript =
+      debugger.scripts.values.firstWhere((e) => e.url.contains(client));
+  final clientSource = await debugger.getScriptSource(clientScript.scriptId);
+
+  final line = clientSource.split('\n').indexWhere(
+        (element) => element.contains('convertDartClosureToJS'),
+      );
+
+  final result = await debugger.sendCommand(
+    'Debugger.setBreakpointByUrl',
+    params: {
+      'urlRegex': '.*$client',
+      'lineNumber': line + 4,
+      'columnNumber': 0,
+    },
+  );
+  return result.json['result']['breakpointId'];
+}
diff --git a/dwds/test/expression_evaluator_test.dart b/dwds/test/expression_evaluator_test.dart
index 2874207..908a174 100644
--- a/dwds/test/expression_evaluator_test.dart
+++ b/dwds/test/expression_evaluator_test.dart
@@ -14,6 +14,7 @@
 import 'package:dwds/src/services/expression_evaluator.dart';
 
 import 'package:test/test.dart';
+import 'package:vm_service/vm_service.dart' hide LogRecord;
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';
 
 import 'fixtures/context.dart';
@@ -31,14 +32,17 @@
       _batchedEvaluator = null;
     }
 
+    late StreamController<DebuggerPausedEvent> pausedController;
+    late StreamController<Event> debugEventController;
     setUp(() async {
       globalLoadStrategy = FakeStrategy();
 
       final assetReader = FakeAssetReader(sourceMap: '');
       final modules = FakeModules();
 
-      final webkitDebugger = FakeWebkitDebugger(scripts: {});
-      final pausedController = StreamController<DebuggerPausedEvent>();
+      final webkitDebugger = FakeWebkitDebugger();
+      pausedController = StreamController<DebuggerPausedEvent>();
+      debugEventController = StreamController<Event>();
       webkitDebugger.onPaused = pausedController.stream;
 
       final root = 'fakeRoot';
@@ -49,7 +53,7 @@
       final skipLists = SkipLists();
       final debugger = await Debugger.create(
         webkitDebugger,
-        (_, __) {},
+        (_, e) => debugEventController.sink.add(e),
         locations,
         skipLists,
         root,
@@ -108,6 +112,37 @@
         );
       });
 
+      test('cannot evaluate expression in async frame ', () async {
+        // Add a DebuggerPausedEvent with no frames provoke an error.
+        pausedController.sink.add(
+          DebuggerPausedEvent({
+            'method': '',
+            'params': {
+              'reason': 'other',
+              'callFrames': [],
+            }
+          }),
+        );
+
+        await debugEventController.stream
+            .firstWhere((e) => e.kind == EventKind.kPauseInterrupted);
+
+        // Verify that we get the internal error.
+        final result =
+            await evaluator.evaluateExpressionInFrame('20', 0, 'true', null);
+        expect(
+          result,
+          isA<RemoteObject>()
+              .having((o) => o.json['type'], 'type', 'AsyncFrameError')
+              .having(
+                (o) => o.json['value'],
+                'value',
+                'Expression evaluation in async frames is not supported. '
+                    'No frame with index 0.',
+              ),
+        );
+      });
+
       test('can evaluate expression in frame with empty scope', () async {
         // Verify that we don't get the internal error.
         // More extensive testing of 'evaluateExpressionInFrame' is done in
diff --git a/fixtures/_testPackage/web/main.dart b/fixtures/_testPackage/web/main.dart
index 0310fed..ee6d21f 100644
--- a/fixtures/_testPackage/web/main.dart
+++ b/fixtures/_testPackage/web/main.dart
@@ -6,7 +6,9 @@
 // @dart=2.9
 
 import 'dart:async';
+import 'dart:convert';
 import 'dart:core';
+import 'dart:developer';
 import 'dart:html';
 
 import 'package:_test/deferred_library.dart' deferred as d;
@@ -30,6 +32,7 @@
   });
 
   // for evaluation
+  var extensionId = 0;
   Timer.periodic(const Duration(seconds: 1), (_) {
     printLocal();
     printFieldFromLibraryClass(); // Breakpoint: callPrintFieldFromLibraryClass
@@ -47,11 +50,20 @@
     printList();
     printMap();
     printSet();
+    // For testing evaluation in async JS frames.
+    registerUserExtension(extensionId++);
   });
 
   document.body.appendText(concatenate('Program', ' is running!'));
 }
 
+void registerUserExtension(int id) async {
+  registerExtension('ext.extension$id', (_, __) async {
+    print('Hello World from extension$id');
+    return ServiceExtensionResponse.result(json.encode({'success': true}));
+  });
+}
+
 void printLocal() {
   var local = 42;
   print('Local is: $local'); // Breakpoint: printLocal
@@ -68,7 +80,7 @@
 }
 
 void printFieldMain() {
-  var instance = MainClass(2,1);
+  var instance = MainClass(2, 1);
   print('$instance'); // Breakpoint: printFieldMain
 }
 
diff --git a/fixtures/_testPackageSound/web/main.dart b/fixtures/_testPackageSound/web/main.dart
index 6c7e45d..4e8d2a7 100644
--- a/fixtures/_testPackageSound/web/main.dart
+++ b/fixtures/_testPackageSound/web/main.dart
@@ -3,7 +3,9 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
+import 'dart:convert';
 import 'dart:core';
+import 'dart:developer';
 import 'dart:html';
 
 import 'package:_test_package_sound/test_library.dart';
@@ -27,6 +29,7 @@
   });
 
   // for evaluation
+  var extensionId = 0;
   Timer.periodic(const Duration(seconds: 1), (_) async {
     await asyncMethod();
     printLocal();
@@ -46,11 +49,20 @@
     printList();
     printMap();
     printSet();
+    // For testing evaluation in async JS frames.
+    registerUserExtension(extensionId++);
   });
 
   document.body?.appendText(concatenate('Program', ' is running!'));
 }
 
+void registerUserExtension(int id) async {
+  registerExtension('ext.extension$id', (_, __) async {
+    print('Hello World from extension$id');
+    return ServiceExtensionResponse.result(json.encode({'success': true}));
+  });
+}
+
 Future<int> asyncMethod() async {
   printLocal();
   return 0;