diff --git a/DEPS b/DEPS
index b98102b..60bf931 100644
--- a/DEPS
+++ b/DEPS
@@ -108,7 +108,7 @@
   "dart_style_rev": "08b0294d0a500d5c02168ef57dcb8868d0c3cb48",
 
   "dartdoc_rev" : "11c4b3c9723bfa7155efcf0fef02329233a6381d",
-  "devtools_rev" : "85932bb66aa782c4b2c528be7718960bf256ffb7",
+  "devtools_rev" : "013958fbd45351e5975068756b7b9114465a7f98",
   "jsshell_tag": "version:88.0",
   "ffi_rev": "4dd32429880a57b64edaf54c9d5af8a9fa9a4ffb",
   "fixnum_rev": "16d3890c6dc82ca629659da1934e412292508bba",
diff --git a/pkg/compiler/lib/src/js_emitter/native_emitter.dart b/pkg/compiler/lib/src/js_emitter/native_emitter.dart
index a3137e7..857b67b 100644
--- a/pkg/compiler/lib/src/js_emitter/native_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/native_emitter.dart
@@ -94,6 +94,7 @@
 
     Class objectClass = null;
     Class jsInterceptorClass = null;
+    Class jsJavaScriptObjectClass = null;
 
     void walk(Class cls) {
       if (cls.element == _commonElements.objectClass) {
@@ -104,6 +105,11 @@
         jsInterceptorClass = cls;
         return;
       }
+      // Native classes may inherit either `Interceptor` e.g. `JSBool` or
+      // `JavaScriptObject` e.g. `dart:html` classes.
+      if (cls.element == _commonElements.jsJavaScriptObjectClass) {
+        jsJavaScriptObjectClass = cls;
+      }
       if (seen.contains(cls)) return;
       seen.add(cls);
       walk(cls.superclass);
@@ -215,6 +221,9 @@
     // by getNativeInterceptor and custom elements.
     if (_nativeCodegenEnqueuer.hasInstantiatedNativeClasses) {
       fillNativeInfo(jsInterceptorClass);
+      if (jsJavaScriptObjectClass != null) {
+        fillNativeInfo(jsJavaScriptObjectClass);
+      }
       for (Class cls in classes) {
         if (!cls.isNative || neededClasses.contains(cls)) {
           fillNativeInfo(cls);
diff --git a/pkg/compiler/test/jsinterop/internal_annotations_test.dart b/pkg/compiler/test/jsinterop/internal_annotations_test.dart
index 4299a38..62deced 100644
--- a/pkg/compiler/test/jsinterop/internal_annotations_test.dart
+++ b/pkg/compiler/test/jsinterop/internal_annotations_test.dart
@@ -184,7 +184,15 @@
             "Expected $name to be indirectly instantiated in `${mainSource}`:"
             "\n${world.classHierarchy.dump(cls)}");
       }
-      if (!isInstantiated && (name != 'Object' && name != 'Interceptor')) {
+      // Classes that are expected to be instantiated by default. `Object` and
+      // `Interceptor` are base types for non-native and native types, and
+      // `JavaScriptObject` is the base type for `dart:html` types.
+      var insantiatedBaseClasses = [
+        'Object',
+        'Interceptor',
+        'JavaScriptObject'
+      ];
+      if (!isInstantiated && !insantiatedBaseClasses.contains(name)) {
         Expect.isFalse(
             world.classHierarchy.isInstantiated(cls),
             "Expected $name to be uninstantiated in `${mainSource}`:"
diff --git a/pkg/compiler/test/jsinterop/world_test.dart b/pkg/compiler/test/jsinterop/world_test.dart
index 6c3253f..230873f 100644
--- a/pkg/compiler/test/jsinterop/world_test.dart
+++ b/pkg/compiler/test/jsinterop/world_test.dart
@@ -178,7 +178,15 @@
             "Expected $name to be indirectly instantiated in `${mainSource}`:"
             "\n${world.classHierarchy.dump(cls)}");
       }
-      if (!isInstantiated && (name != 'Object' && name != 'Interceptor')) {
+      // Classes that are expected to be instantiated by default. `Object` and
+      // `Interceptor` are base types for non-native and native types, and
+      // `JavaScriptObject` is the base type for `dart:html` types.
+      var insantiatedBaseClasses = [
+        'Object',
+        'Interceptor',
+        'JavaScriptObject'
+      ];
+      if (!isInstantiated && !insantiatedBaseClasses.contains(name)) {
         Expect.isFalse(
             world.classHierarchy.isInstantiated(cls),
             "Expected $name to be uninstantiated in `${mainSource}`:"
diff --git a/sdk/bin/dartanalyzer_sdk b/sdk/bin/dartanalyzer_sdk
index 88f4deb..bb7b84a 100755
--- a/sdk/bin/dartanalyzer_sdk
+++ b/sdk/bin/dartanalyzer_sdk
@@ -6,6 +6,8 @@
 # Run dartanalyzer.dart on the Dart VM. This script assumes the Dart SDK's
 # directory structure.
 
+echo "Warning: 'dartanalyzer' is deprecated. Please use 'dart analyze'." 1>&2
+
 function follow_links() {
   file="$1"
   while [ -h "$file" ]; do
diff --git a/sdk/bin/dartanalyzer_sdk.bat b/sdk/bin/dartanalyzer_sdk.bat
index 57dd538..7b1e03b 100644
--- a/sdk/bin/dartanalyzer_sdk.bat
+++ b/sdk/bin/dartanalyzer_sdk.bat
@@ -3,6 +3,8 @@
 REM for details. All rights reserved. Use of this source code is governed by a
 REM BSD-style license that can be found in the LICENSE file.
 
+echo Warning: 'dartanalyzer' is deprecated. Please use 'dart analyze'. 1>&2
+
 setlocal
 rem Handle the case where dart-sdk/bin has been symlinked to.
 set DIR_NAME_WITH_SLASH=%~dp0
diff --git a/sdk/lib/_internal/js_runtime/lib/js_helper.dart b/sdk/lib/_internal/js_runtime/lib/js_helper.dart
index a7f3ca8..d41e511 100644
--- a/sdk/lib/_internal/js_runtime/lib/js_helper.dart
+++ b/sdk/lib/_internal/js_runtime/lib/js_helper.dart
@@ -415,19 +415,21 @@
 
     var interceptor = getInterceptor(object);
     if (identical(interceptor, JS_INTERCEPTOR_CONSTANT(Interceptor)) ||
+        identical(interceptor, JS_INTERCEPTOR_CONSTANT(JavaScriptObject)) ||
         object is UnknownJavaScriptObject) {
       // Try to do better.  If we do not find something better, fallthrough to
-      // Dart-type based name that leave the name as 'UnknownJavaScriptObject'
-      // or 'Interceptor' (or the minified versions thereof).
+      // Dart-type based name that leave the name as 'UnknownJavaScriptObject',
+      // 'Interceptor', or 'JavaScriptObject' (or their minified versions).
       //
       // When we get here via the UnknownJavaScriptObject test (for JavaScript
       // objects from outside the program), the object's constructor has a
       // better name that 'UnknownJavaScriptObject'.
       //
-      // When we get here the Interceptor test (for Native classes that are
-      // declared in the Dart program but have been 'folded' into Interceptor),
-      // the native class's constructor name is better than the generic
-      // 'Interceptor' (an abstract class).
+      // When we get here via either the Interceptor or JavaScriptObject test
+      // (for Native classes that are declared in the Dart program but have been
+      // 'folded' into one of those interceptors), the native class's
+      // constructor name is better than the generic 'Interceptor' or
+      // 'JavaScriptObject'.
 
       // Try the [constructorNameFallback]. This gets the constructor name for
       // any browser (used by [getNativeInterceptor]).
diff --git a/tests/web/dart2js.status b/tests/web/dart2js.status
index 9faa92a..826b784 100644
--- a/tests/web/dart2js.status
+++ b/tests/web/dart2js.status
@@ -24,12 +24,16 @@
 [ $compiler == dart2js && $runtime == chrome && $csp ]
 deferred/load_in_correct_order_test: SkipByDesign # Purposely uses `eval`
 
+[ $compiler == dart2js && $runtime == d8 ]
+internal/object_members_test: SkipByDesign # Browser test
+
 [ $compiler == dart2js && $runtime == ff && $system == windows ]
 consistent_index_error_string_test: Slow, Pass # Issue 25940
 
 [ $compiler == dart2js && $csp ]
 deferred_custom_loader_test: SkipByDesign # Issue 25683
 deferred_fail_and_retry_test: SkipByDesign # Uses eval to simulate failed loading.
+internal/object_members_test: SkipByDesign # Uses eval for interop
 
 [ $compiler == dart2js && !$host_checked ]
 dummy_compiler_test: Slow, Pass # Issue 32439. self-hosting doesn't work with CFE yet.
diff --git a/tests/web/internal/object_members_test.dart b/tests/web/internal/object_members_test.dart
new file mode 100644
index 0000000..02092eb
--- /dev/null
+++ b/tests/web/internal/object_members_test.dart
@@ -0,0 +1,80 @@
+// Copyright (c) 2022, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Make sure `Object` methods work as expected with `dart:html` and interop
+// types. The expectations here aren't guarantees that they should work a
+// particular way, but rather a way to monitor regressions/changes.
+
+@JS()
+library object_members_test;
+
+import 'package:js/js.dart';
+import 'package:expect/minitest.dart';
+
+import 'dart:html';
+import 'dart:_interceptors' show JSObject;
+
+@JS()
+external void eval(String code);
+
+@JS()
+class JSClass {
+  external JSClass();
+}
+
+void main() {
+  eval(r'''
+    function JSClass() {}
+  ''');
+
+  // `dart:html` type.
+  var div = document.createElement('div');
+  expect(div == div, true);
+  expect(div == DomPointReadOnly(), false);
+  // Ensure that we get a random hash for each new instance. It should be
+  // improbable for this to fail across many runs if the hash is
+  // non-deterministic.
+  var hashCode = div.hashCode;
+  var attempts = 0;
+  var maxAttempts = 1000;
+  while (div.hashCode == hashCode && attempts < maxAttempts) {
+    div = document.createElement('div');
+    attempts++;
+  }
+  expect(attempts > 0 && attempts != maxAttempts, isTrue);
+  expect(div.toString, isNotNull);
+  expect(div.toString(), 'div');
+  expect(div.noSuchMethod, isNotNull);
+  var noSuchMethodErrorThrown = true;
+  try {
+    (div as dynamic).triggerNoSuchMethod();
+    noSuchMethodErrorThrown = false;
+  } catch (_) {}
+  expect(noSuchMethodErrorThrown, isTrue);
+  expect(div.runtimeType, DivElement);
+
+  // `toString` for `dart:html` types that do not have an overridden `toString`
+  // should look up the type through the proto.
+  expect(window.navigator.toString(), "Instance of 'Navigator'");
+
+  // Interop type.
+  var js = JSClass();
+  expect(js == js, true);
+  expect(js == JSClass(), false);
+  // TODO(srujzs): Modify this once interop has random hash codes.
+  hashCode = js.hashCode;
+  expect(hashCode, 0);
+  expect(hashCode, js.hashCode);
+  expect(js.toString, isNotNull);
+  // Should forward to underlying `toString` call.
+  expect(js.toString(), '[object Object]');
+  expect(js.noSuchMethod, isNotNull);
+  noSuchMethodErrorThrown = true;
+  try {
+    (js as dynamic).triggerNoSuchMethod();
+    noSuchMethodErrorThrown = false;
+  } catch (_) {}
+  expect(noSuchMethodErrorThrown, isTrue);
+  expect(js.runtimeType, JSObject);
+}
diff --git a/tests/web_2/dart2js_2.status b/tests/web_2/dart2js_2.status
index 9faa92a..826b784 100644
--- a/tests/web_2/dart2js_2.status
+++ b/tests/web_2/dart2js_2.status
@@ -24,12 +24,16 @@
 [ $compiler == dart2js && $runtime == chrome && $csp ]
 deferred/load_in_correct_order_test: SkipByDesign # Purposely uses `eval`
 
+[ $compiler == dart2js && $runtime == d8 ]
+internal/object_members_test: SkipByDesign # Browser test
+
 [ $compiler == dart2js && $runtime == ff && $system == windows ]
 consistent_index_error_string_test: Slow, Pass # Issue 25940
 
 [ $compiler == dart2js && $csp ]
 deferred_custom_loader_test: SkipByDesign # Issue 25683
 deferred_fail_and_retry_test: SkipByDesign # Uses eval to simulate failed loading.
+internal/object_members_test: SkipByDesign # Uses eval for interop
 
 [ $compiler == dart2js && !$host_checked ]
 dummy_compiler_test: Slow, Pass # Issue 32439. self-hosting doesn't work with CFE yet.
diff --git a/tests/web_2/internal/object_members_test.dart b/tests/web_2/internal/object_members_test.dart
new file mode 100644
index 0000000..02092eb
--- /dev/null
+++ b/tests/web_2/internal/object_members_test.dart
@@ -0,0 +1,80 @@
+// Copyright (c) 2022, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Make sure `Object` methods work as expected with `dart:html` and interop
+// types. The expectations here aren't guarantees that they should work a
+// particular way, but rather a way to monitor regressions/changes.
+
+@JS()
+library object_members_test;
+
+import 'package:js/js.dart';
+import 'package:expect/minitest.dart';
+
+import 'dart:html';
+import 'dart:_interceptors' show JSObject;
+
+@JS()
+external void eval(String code);
+
+@JS()
+class JSClass {
+  external JSClass();
+}
+
+void main() {
+  eval(r'''
+    function JSClass() {}
+  ''');
+
+  // `dart:html` type.
+  var div = document.createElement('div');
+  expect(div == div, true);
+  expect(div == DomPointReadOnly(), false);
+  // Ensure that we get a random hash for each new instance. It should be
+  // improbable for this to fail across many runs if the hash is
+  // non-deterministic.
+  var hashCode = div.hashCode;
+  var attempts = 0;
+  var maxAttempts = 1000;
+  while (div.hashCode == hashCode && attempts < maxAttempts) {
+    div = document.createElement('div');
+    attempts++;
+  }
+  expect(attempts > 0 && attempts != maxAttempts, isTrue);
+  expect(div.toString, isNotNull);
+  expect(div.toString(), 'div');
+  expect(div.noSuchMethod, isNotNull);
+  var noSuchMethodErrorThrown = true;
+  try {
+    (div as dynamic).triggerNoSuchMethod();
+    noSuchMethodErrorThrown = false;
+  } catch (_) {}
+  expect(noSuchMethodErrorThrown, isTrue);
+  expect(div.runtimeType, DivElement);
+
+  // `toString` for `dart:html` types that do not have an overridden `toString`
+  // should look up the type through the proto.
+  expect(window.navigator.toString(), "Instance of 'Navigator'");
+
+  // Interop type.
+  var js = JSClass();
+  expect(js == js, true);
+  expect(js == JSClass(), false);
+  // TODO(srujzs): Modify this once interop has random hash codes.
+  hashCode = js.hashCode;
+  expect(hashCode, 0);
+  expect(hashCode, js.hashCode);
+  expect(js.toString, isNotNull);
+  // Should forward to underlying `toString` call.
+  expect(js.toString(), '[object Object]');
+  expect(js.noSuchMethod, isNotNull);
+  noSuchMethodErrorThrown = true;
+  try {
+    (js as dynamic).triggerNoSuchMethod();
+    noSuchMethodErrorThrown = false;
+  } catch (_) {}
+  expect(noSuchMethodErrorThrown, isTrue);
+  expect(js.runtimeType, JSObject);
+}
diff --git a/tools/VERSION b/tools/VERSION
index 4e66be2..7e2479b 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 16
 PATCH 0
 PRERELEASE 134
-PRERELEASE_PATCH 1
\ No newline at end of file
+PRERELEASE_PATCH 5
\ No newline at end of file
diff --git a/tools/bots/dart_sdk.py b/tools/bots/dart_sdk.py
index d14f3ce..934906f 100755
--- a/tools/bots/dart_sdk.py
+++ b/tools/bots/dart_sdk.py
@@ -79,7 +79,7 @@
 def CreateUploadAPIDocs():
     dartdoc_dir = BuildRootPath('gen-dartdocs')
     dartdoc_zip = BuildRootPath('dartdocs-api.zip')
-    if CHANNEL == bot_utils.Channel.TRY:
+    if CHANNEL == bot_utils.Channel.TRY or DART_EXPERIMENTAL_BUILD == '1':
         BuildDartdocAPIDocs(dartdoc_dir)
     else:
         UploadApiLatestFile()
@@ -222,12 +222,13 @@
 
     BUILD_OS = utils.GuessOS()
     BUILDER_NAME = os.environ.get('BUILDBOT_BUILDERNAME')
+    DART_EXPERIMENTAL_BUILD = os.environ.get('DART_EXPERIMENTAL_BUILD')
     CHANNEL = bot_utils.GetChannelFromName(BUILDER_NAME)
 
     if command == 'api_docs':
         if BUILD_OS == 'linux':
             CreateUploadAPIDocs()
-    elif CHANNEL != bot_utils.Channel.TRY:
+    elif CHANNEL != bot_utils.Channel.TRY and DART_EXPERIMENTAL_BUILD != '1':
         for arch in archs:
             print('Create and upload sdk zip for ' + arch)
             sdk_path = BuildRootPath('dart-sdk', arch=arch)