diff --git a/pkg/_js_interop_checks/lib/src/transformations/export_creator.dart b/pkg/_js_interop_checks/lib/src/transformations/export_creator.dart
index caade5747ae..d49eaba7b8e 100644
--- a/pkg/_js_interop_checks/lib/src/transformations/export_creator.dart
+++ b/pkg/_js_interop_checks/lib/src/transformations/export_creator.dart
@@ -36,7 +36,7 @@ class ExportCreator extends Transformer {
   ExportCreator(
       this._typeEnvironment, this._diagnosticReporter, this._exportChecker)
       : _allowInterop = _typeEnvironment.coreTypes.index
-            .getTopLevelProcedure('dart:js', 'allowInterop'),
+            .getTopLevelProcedure('dart:js_util', 'allowInterop'),
         _createDartExport = _typeEnvironment.coreTypes.index
             .getTopLevelProcedure('dart:js_util', 'createDartExport'),
         _createStaticInteropMock = _typeEnvironment.coreTypes.index
diff --git a/pkg/_js_interop_checks/lib/src/transformations/js_util_optimizer.dart b/pkg/_js_interop_checks/lib/src/transformations/js_util_optimizer.dart
index b75da78d71f..eb49ccf9bb5 100644
--- a/pkg/_js_interop_checks/lib/src/transformations/js_util_optimizer.dart
+++ b/pkg/_js_interop_checks/lib/src/transformations/js_util_optimizer.dart
@@ -89,8 +89,8 @@ class JsUtilOptimizer extends Transformer {
             .getTopLevelProcedure('dart:js_util', '_setPropertyUnchecked'),
         _jsTarget =
             _coreTypes.index.getTopLevelProcedure('dart:_foreign_helper', 'JS'),
-        _allowInteropTarget =
-            _coreTypes.index.getTopLevelProcedure('dart:js', 'allowInterop'),
+        _allowInteropTarget = _coreTypes.index
+            .getTopLevelProcedure('dart:js_util', 'allowInterop'),
         _allowedInteropJsUtilTargets = _allowedInteropJsUtilMembers.map(
             (member) =>
                 _coreTypes.index.getTopLevelProcedure('dart:js_util', member)),
diff --git a/pkg/compiler/lib/src/common/elements.dart b/pkg/compiler/lib/src/common/elements.dart
index 1dbff8b97b2..03475b4b42d 100644
--- a/pkg/compiler/lib/src/common/elements.dart
+++ b/pkg/compiler/lib/src/common/elements.dart
@@ -139,8 +139,9 @@ abstract class CommonElements {
   late final LibraryEntity internalLibrary =
       _env.lookupLibrary(Uris.dart__internal, required: true)!;
 
-  /// The dart:js library.
-  late final LibraryEntity? dartJsLibrary = _env.lookupLibrary(Uris.dart_js);
+  /// The dart:js_util library.
+  late final LibraryEntity? dartJsUtilLibrary =
+      _env.lookupLibrary(Uris.dart_js_util);
 
   /// The package:js library.
   late final LibraryEntity? packageJsLibrary =
@@ -1039,21 +1040,9 @@ abstract class CommonElements {
         : objectClass;
   }
 
-  // From package:js
-  late final FunctionEntity? jsAllowInterop1 =
-      _findLibraryMember(dartJsLibrary, 'allowInterop', required: false);
-
-  // From dart:_js_annotations;
-  late final FunctionEntity? jsAllowInterop2 = _findLibraryMember(
-      dartJsAnnotationsLibrary, 'allowInterop',
-      required: false);
-
-  /// Returns `true` if [function] is `allowInterop`.
-  ///
-  /// This function can come from either `package:js` or `dart:_js_annotations`.
-  bool isJsAllowInterop(FunctionEntity function) {
-    return function == jsAllowInterop1 || function == jsAllowInterop2;
-  }
+  // From dart:js_util
+  late final FunctionEntity? jsAllowInterop =
+      _findLibraryMember(dartJsUtilLibrary, 'allowInterop', required: false);
 
   bool isCreateInvocationMirrorHelper(MemberEntity member) {
     return member.isTopLevel &&
diff --git a/pkg/compiler/lib/src/common/names.dart b/pkg/compiler/lib/src/common/names.dart
index abd2114d234..470f3f1200d 100644
--- a/pkg/compiler/lib/src/common/names.dart
+++ b/pkg/compiler/lib/src/common/names.dart
@@ -255,8 +255,8 @@ class Uris {
   static final Uri dart__js_shared_embedded_names =
       Uri(scheme: 'dart', path: '_js_shared_embedded_names');
 
-  /// The URI for 'dart:js'.
-  static final Uri dart_js = Uri(scheme: 'dart', path: 'js');
+  /// The URI for 'dart:js_util'.
+  static final Uri dart_js_util = Uri(scheme: 'dart', path: 'js_util');
 
   /// The URI for 'package:js'.
   static final Uri package_js = Uri(scheme: 'package', path: 'js/js.dart');
diff --git a/pkg/compiler/lib/src/js_backend/backend_impact.dart b/pkg/compiler/lib/src/js_backend/backend_impact.dart
index 3b3d4d23c58..1b9ab7b6171 100644
--- a/pkg/compiler/lib/src/js_backend/backend_impact.dart
+++ b/pkg/compiler/lib/src/js_backend/backend_impact.dart
@@ -399,8 +399,7 @@ class BackendImpacts {
 
   late final BackendImpact allowInterop = BackendImpact(
     staticUses: [
-      _commonElements.jsAllowInterop1!,
-      _commonElements.jsAllowInterop2!,
+      _commonElements.jsAllowInterop!,
     ],
     features: EnumSet<BackendFeature>.fromValues([
       BackendFeature.needToInitializeIsolateAffinityTag,
diff --git a/pkg/compiler/lib/src/ssa/codegen.dart b/pkg/compiler/lib/src/ssa/codegen.dart
index 690022ee3ac..9a089cf0ad8 100644
--- a/pkg/compiler/lib/src/ssa/codegen.dart
+++ b/pkg/compiler/lib/src/ssa/codegen.dart
@@ -2066,8 +2066,7 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
 
     List<js.Expression> arguments = visitArguments(node.inputs, start: 0);
 
-    if (element == _commonElements.jsAllowInterop1 ||
-        element == _commonElements.jsAllowInterop2) {
+    if (element == _commonElements.jsAllowInterop) {
       _nativeData.registerAllowInterop();
     }
 
diff --git a/pkg/compiler/test/impact/data/jsinterop.dart b/pkg/compiler/test/impact/data/jsinterop.dart
index 65598fd359c..ba65d5dc54c 100644
--- a/pkg/compiler/test/impact/data/jsinterop.dart
+++ b/pkg/compiler/test/impact/data/jsinterop.dart
@@ -30,21 +30,9 @@ class JsInteropClass {
   /*member: JsInteropClass.:*/
   external JsInteropClass();
 
-  /*member: JsInteropClass.method:
-   type=[
-    native:ApplicationCacheErrorEvent,
-    native:DomError,
-    native:DomException,
-    native:ErrorEvent,
+  /*member: JsInteropClass.method:type=[
     native:GenericClass<dynamic>,
-    native:JsInteropClass,
-    native:MediaError,
-    native:NavigatorUserMediaError,
-    native:OverconstrainedError,
-    native:PositionError,
-    native:SensorErrorEvent,
-    native:SpeechRecognitionError]
-  */
+    native:JsInteropClass]*/
   @JS()
   external double method();
 }
diff --git a/pkg/dart2wasm/lib/js_runtime_generator.dart b/pkg/dart2wasm/lib/js_runtime_generator.dart
index 2b85a307d39..fd8cd20d87a 100644
--- a/pkg/dart2wasm/lib/js_runtime_generator.dart
+++ b/pkg/dart2wasm/lib/js_runtime_generator.dart
@@ -163,8 +163,8 @@ class _JSLowerer extends Transformer {
             .getClass('dart:_js_helper', 'JSValue')
             .procedures
             .firstWhere((p) => p.name.text == 'unbox'),
-        _allowInteropTarget =
-            _coreTypes.index.getTopLevelProcedure('dart:js', 'allowInterop'),
+        _allowInteropTarget = _coreTypes.index
+            .getTopLevelProcedure('dart:js_util', 'allowInterop'),
         _inlineJSTarget =
             _coreTypes.index.getTopLevelProcedure('dart:_js_helper', 'JS'),
         _wasmExternRefClass =
diff --git a/pkg/dart2wasm/lib/target.dart b/pkg/dart2wasm/lib/target.dart
index eeb07e78ce9..617f592e21b 100644
--- a/pkg/dart2wasm/lib/target.dart
+++ b/pkg/dart2wasm/lib/target.dart
@@ -61,7 +61,6 @@ class WasmTarget extends Target {
         'dart:typed_data',
         'dart:nativewrappers',
         'dart:io',
-        'dart:js',
         'dart:js_util',
         'dart:wasm',
         'dart:developer',
@@ -73,7 +72,6 @@ class WasmTarget extends Target {
         'dart:_js_interop',
         'dart:collection',
         'dart:typed_data',
-        'dart:js',
         'dart:js_util',
         'dart:wasm',
       ];
diff --git a/pkg/dev_compiler/lib/src/kernel/js_interop.dart b/pkg/dev_compiler/lib/src/kernel/js_interop.dart
index 16f1038a2de..b78ee59a29d 100644
--- a/pkg/dev_compiler/lib/src/kernel/js_interop.dart
+++ b/pkg/dev_compiler/lib/src/kernel/js_interop.dart
@@ -34,7 +34,7 @@ bool _isJSLibrary(Library library) => _isLibrary(library, [
 bool isAllowInterop(Expression node) {
   if (node is StaticInvocation) {
     var target = node.target;
-    return _isLibrary(target.enclosingLibrary, ['dart:js']) &&
+    return _isLibrary(target.enclosingLibrary, ['dart:js_util']) &&
         target.name.text == 'allowInterop';
   }
   return false;
diff --git a/pkg/js/lib/js.dart b/pkg/js/lib/js.dart
index b395efeac22..b6897c5f0f2 100644
--- a/pkg/js/lib/js.dart
+++ b/pkg/js/lib/js.dart
@@ -7,7 +7,7 @@ library js;
 
 import 'package:meta/meta.dart';
 
-export 'dart:js' show allowInterop, allowInteropCaptureThis;
+export 'dart:js_util' show allowInterop, allowInteropCaptureThis;
 
 /// An annotation that indicates a library, class, or member is implemented
 /// directly in JavaScript.
diff --git a/sdk/lib/_internal/js_dev_runtime/patch/js_allow_interop_patch.dart b/sdk/lib/_internal/js_dev_runtime/patch/js_allow_interop_patch.dart
new file mode 100644
index 00000000000..b3bfee5219d
--- /dev/null
+++ b/sdk/lib/_internal/js_dev_runtime/patch/js_allow_interop_patch.dart
@@ -0,0 +1,48 @@
+// Copyright (c) 2023, 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.
+
+// Patch file for dart:js_util library.
+import 'dart:_foreign_helper' show JS;
+import 'dart:_internal' show patch;
+import 'dart:_runtime' as dart;
+
+Expando<Function> _interopExpando = Expando<Function>();
+
+@patch
+F allowInterop<F extends Function>(F f) {
+  if (!dart.isDartFunction(f)) return f;
+  var ret = _interopExpando[f] as F?;
+  if (ret == null) {
+    ret = JS<F>(
+        '',
+        'function (...args) {'
+            ' return #(#, args);'
+            '}',
+        dart.dcall,
+        f);
+    _interopExpando[f] = ret;
+  }
+  return ret;
+}
+
+Expando<Function> _interopCaptureThisExpando = Expando<Function>();
+
+@patch
+Function allowInteropCaptureThis(Function f) {
+  if (!dart.isDartFunction(f)) return f;
+  var ret = _interopCaptureThisExpando[f];
+  if (ret == null) {
+    ret = JS<Function>(
+        '',
+        'function(...arguments) {'
+            '  let args = [this];'
+            '  args.push.apply(args, arguments);'
+            '  return #(#, args);'
+            '}',
+        dart.dcall,
+        f);
+    _interopCaptureThisExpando[f] = ret;
+  }
+  return ret;
+}
diff --git a/sdk/lib/_internal/js_dev_runtime/patch/js_patch.dart b/sdk/lib/_internal/js_dev_runtime/patch/js_patch.dart
index 2eda2b4fdfc..f9349796da0 100644
--- a/sdk/lib/_internal/js_dev_runtime/patch/js_patch.dart
+++ b/sdk/lib/_internal/js_dev_runtime/patch/js_patch.dart
@@ -404,43 +404,3 @@ T _putIfAbsent<T>(Object weakMap, Object o, T getValue(Object o)) {
   // TODO(vsm): Static cast.  Unnecessary?
   return JS('', '#', value);
 }
-
-Expando<Function> _interopExpando = Expando<Function>();
-
-@patch
-F allowInterop<F extends Function>(F f) {
-  if (!dart.isDartFunction(f)) return f;
-  var ret = _interopExpando[f] as F?;
-  if (ret == null) {
-    ret = JS<F>(
-        '',
-        'function (...args) {'
-            ' return #(#, args);'
-            '}',
-        dart.dcall,
-        f);
-    _interopExpando[f] = ret;
-  }
-  return ret;
-}
-
-Expando<Function> _interopCaptureThisExpando = Expando<Function>();
-
-@patch
-Function allowInteropCaptureThis(Function f) {
-  if (!dart.isDartFunction(f)) return f;
-  var ret = _interopCaptureThisExpando[f];
-  if (ret == null) {
-    ret = JS<Function>(
-        '',
-        'function(...arguments) {'
-            '  let args = [this];'
-            '  args.push.apply(args, arguments);'
-            '  return #(#, args);'
-            '}',
-        dart.dcall,
-        f);
-    _interopCaptureThisExpando[f] = ret;
-  }
-  return ret;
-}
diff --git a/sdk/lib/_internal/js_runtime/lib/js_allow_interop_patch.dart b/sdk/lib/_internal/js_runtime/lib/js_allow_interop_patch.dart
new file mode 100644
index 00000000000..831cd4911b2
--- /dev/null
+++ b/sdk/lib/_internal/js_runtime/lib/js_allow_interop_patch.dart
@@ -0,0 +1,82 @@
+// Copyright (c) 2023, 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.
+
+// Patch file for dart:js_util library.
+
+import 'dart:_foreign_helper' show JS, DART_CLOSURE_TO_JS;
+import 'dart:_interceptors' show DART_CLOSURE_PROPERTY_NAME;
+import 'dart:_internal' show patch;
+import 'dart:_js_helper'
+    show
+        isJSFunction,
+        JS_FUNCTION_PROPERTY_NAME,
+        JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS;
+
+_convertDartFunctionFast(Function f) {
+  var existing = JS('', '#.#', f, JS_FUNCTION_PROPERTY_NAME);
+  if (existing != null) return existing;
+  var ret = JS(
+      'JavaScriptFunction',
+      '''
+        function(_call, f) {
+          return function() {
+            return _call(f, Array.prototype.slice.apply(arguments));
+          }
+        }(#, #)
+      ''',
+      DART_CLOSURE_TO_JS(_callDartFunctionFast),
+      f);
+  JS('', '#.# = #', ret, DART_CLOSURE_PROPERTY_NAME, f);
+  JS('', '#.# = #', f, JS_FUNCTION_PROPERTY_NAME, ret);
+  return ret;
+}
+
+_convertDartFunctionFastCaptureThis(Function f) {
+  var existing = JS('', '#.#', f, JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS);
+  if (existing != null) return existing;
+  var ret = JS(
+      'JavaScriptFunction',
+      '''
+        function(_call, f) {
+          return function() {
+            return _call(f, this,Array.prototype.slice.apply(arguments));
+          }
+        }(#, #)
+      ''',
+      DART_CLOSURE_TO_JS(_callDartFunctionFastCaptureThis),
+      f);
+  JS('', '#.# = #', ret, DART_CLOSURE_PROPERTY_NAME, f);
+  JS('', '#.# = #', f, JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS, ret);
+  return ret;
+}
+
+_callDartFunctionFast(callback, List arguments) {
+  return Function.apply(callback, arguments);
+}
+
+_callDartFunctionFastCaptureThis(callback, self, List arguments) {
+  return Function.apply(callback, [self]..addAll(arguments));
+}
+
+@patch
+F allowInterop<F extends Function>(F f) {
+  if (isJSFunction(f)) {
+    // Already supports interop, just use the existing function.
+    return f;
+  } else {
+    return _convertDartFunctionFast(f);
+  }
+}
+
+@patch
+Function allowInteropCaptureThis(Function f) {
+  if (isJSFunction(f)) {
+    // Behavior when the function is already a JS function is unspecified.
+    throw ArgumentError(
+        "Function is already a JS function so cannot capture this.");
+    return f;
+  } else {
+    return _convertDartFunctionFastCaptureThis(f);
+  }
+}
diff --git a/sdk/lib/_internal/js_runtime/lib/js_helper.dart b/sdk/lib/_internal/js_runtime/lib/js_helper.dart
index cefeb714965..38f3c62f5c6 100644
--- a/sdk/lib/_internal/js_runtime/lib/js_helper.dart
+++ b/sdk/lib/_internal/js_runtime/lib/js_helper.dart
@@ -82,6 +82,9 @@ part 'string_helper.dart';
 part 'linked_hash_map.dart';
 part 'records.dart';
 
+const JS_FUNCTION_PROPERTY_NAME = r'$dart_jsFunction';
+const JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS = r'_$dart_jsFunctionCaptureThis';
+
 /// Marks the internal map in dart2js, so that internal libraries can is-check
 /// them.
 abstract class InternalMap {}
diff --git a/sdk/lib/_internal/js_runtime/lib/js_patch.dart b/sdk/lib/_internal/js_runtime/lib/js_patch.dart
index ede166822ac..ff574c64b1d 100644
--- a/sdk/lib/_internal/js_runtime/lib/js_patch.dart
+++ b/sdk/lib/_internal/js_runtime/lib/js_patch.dart
@@ -9,7 +9,12 @@ import 'dart:typed_data' show TypedData;
 import 'dart:_foreign_helper' show JS, DART_CLOSURE_TO_JS;
 import 'dart:_interceptors' show DART_CLOSURE_PROPERTY_NAME;
 import 'dart:_internal' show patch;
-import 'dart:_js_helper' show Primitives, getIsolateAffinityTag, isJSFunction;
+import 'dart:_js_helper'
+    show
+        Primitives,
+        getIsolateAffinityTag,
+        isJSFunction,
+        JS_FUNCTION_PROPERTY_NAME;
 import 'dart:_js' show isBrowserObject, convertFromBrowserObject;
 
 @patch
@@ -370,8 +375,6 @@ final String _DART_OBJECT_PROPERTY_NAME =
 
 // property added to a JS object referencing its Dart-side JsObject proxy
 const _JS_OBJECT_PROPERTY_NAME = r'_$dart_jsObject';
-const _JS_FUNCTION_PROPERTY_NAME = r'$dart_jsFunction';
-const _JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS = r'_$dart_jsFunctionCaptureThis';
 
 @pragma('dart2js:tryInline')
 JsObject _castToJsObject(o) => JS<JsObject>('', '#', o);
@@ -431,7 +434,7 @@ Object? _convertToJS(Object? o) {
     return Primitives.lazyAsJsDate(o);
   }
   if (o is Function) {
-    return _getJsProxy(o, _JS_FUNCTION_PROPERTY_NAME, (o) {
+    return _getJsProxy(o, JS_FUNCTION_PROPERTY_NAME, (o) {
       var jsFunction = _convertDartFunction(o);
       // set a property on the JS closure referencing the Dart closure
       _defineProperty(jsFunction, DART_CLOSURE_PROPERTY_NAME, o);
@@ -502,71 +505,3 @@ Object _getDartProxy(o, String propertyName, JsObject createProxy(o)) {
   }
   return dartProxy;
 }
-
-_convertDartFunctionFast(Function f) {
-  var existing = JS('', '#.#', f, _JS_FUNCTION_PROPERTY_NAME);
-  if (existing != null) return existing;
-  var ret = JS(
-      'JavaScriptFunction',
-      '''
-        function(_call, f) {
-          return function() {
-            return _call(f, Array.prototype.slice.apply(arguments));
-          }
-        }(#, #)
-      ''',
-      DART_CLOSURE_TO_JS(_callDartFunctionFast),
-      f);
-  JS('', '#.# = #', ret, DART_CLOSURE_PROPERTY_NAME, f);
-  JS('', '#.# = #', f, _JS_FUNCTION_PROPERTY_NAME, ret);
-  return ret;
-}
-
-_convertDartFunctionFastCaptureThis(Function f) {
-  var existing = JS('', '#.#', f, _JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS);
-  if (existing != null) return existing;
-  var ret = JS(
-      'JavaScriptFunction',
-      '''
-        function(_call, f) {
-          return function() {
-            return _call(f, this,Array.prototype.slice.apply(arguments));
-          }
-        }(#, #)
-      ''',
-      DART_CLOSURE_TO_JS(_callDartFunctionFastCaptureThis),
-      f);
-  JS('', '#.# = #', ret, DART_CLOSURE_PROPERTY_NAME, f);
-  JS('', '#.# = #', f, _JS_FUNCTION_PROPERTY_NAME_CAPTURE_THIS, ret);
-  return ret;
-}
-
-_callDartFunctionFast(callback, List arguments) {
-  return Function.apply(callback, arguments);
-}
-
-_callDartFunctionFastCaptureThis(callback, self, List arguments) {
-  return Function.apply(callback, [self]..addAll(arguments));
-}
-
-@patch
-F allowInterop<F extends Function>(F f) {
-  if (isJSFunction(f)) {
-    // Already supports interop, just use the existing function.
-    return f;
-  } else {
-    return _convertDartFunctionFast(f);
-  }
-}
-
-@patch
-Function allowInteropCaptureThis(Function f) {
-  if (isJSFunction(f)) {
-    // Behavior when the function is already a JS function is unspecified.
-    throw ArgumentError(
-        "Function is already a JS function so cannot capture this.");
-    return f;
-  } else {
-    return _convertDartFunctionFastCaptureThis(f);
-  }
-}
diff --git a/sdk/lib/_internal/js_shared/lib/js_util_patch.dart b/sdk/lib/_internal/js_shared/lib/js_util_patch.dart
index d2b55952b14..fe45f9b822c 100644
--- a/sdk/lib/_internal/js_shared/lib/js_util_patch.dart
+++ b/sdk/lib/_internal/js_shared/lib/js_util_patch.dart
@@ -8,7 +8,6 @@ import 'dart:_js_helper'
     show convertDartClosureToJS, assertInterop, assertInteropArgs;
 import 'dart:collection' show HashMap;
 import 'dart:async' show Completer;
-import 'dart:js_util';
 
 @patch
 dynamic jsify(Object object) {
diff --git a/sdk/lib/_internal/wasm/lib/js_patch.dart b/sdk/lib/_internal/wasm/lib/js_patch.dart
index fde0468e883..d6aefadd754 100644
--- a/sdk/lib/_internal/wasm/lib/js_patch.dart
+++ b/sdk/lib/_internal/wasm/lib/js_patch.dart
@@ -113,10 +113,3 @@ class JsArray<E> extends JsObject with ListMixin<E> {
   @patch
   void sort([int compare(E a, E b)?]) => throw UnimplementedError();
 }
-
-/// This will be lowered to a call to `_wrapDartCallback`.
-@patch
-F allowInterop<F extends Function>(F f) => throw UnimplementedError();
-
-@patch
-Function allowInteropCaptureThis(Function f) => throw UnimplementedError();
diff --git a/sdk/lib/_internal/wasm/lib/js_util_patch.dart b/sdk/lib/_internal/wasm/lib/js_util_patch.dart
index 3dfc1024fe5..a14a25ee61d 100644
--- a/sdk/lib/_internal/wasm/lib/js_util_patch.dart
+++ b/sdk/lib/_internal/wasm/lib/js_util_patch.dart
@@ -150,10 +150,10 @@ typedef _PromiseFailureFunc = void Function(Object? error);
 Future<T> promiseToFuture<T>(Object jsPromise) {
   Completer<T> completer = Completer<T>();
 
-  final success = js.allowInterop<_PromiseSuccessFunc>((r) {
+  final success = allowInterop<_PromiseSuccessFunc>((r) {
     return completer.complete(r as FutureOr<T>?);
   });
-  final error = js.allowInterop<_PromiseFailureFunc>((e) {
+  final error = allowInterop<_PromiseFailureFunc>((e) {
     // Note that `completeError` expects a non-nullable error regardless of
     // whether null-safety is enabled, so a `NullRejectionException` is always
     // provided if the error is `null` or `undefined`.
@@ -257,3 +257,10 @@ Object? dartify(Object? object) {
 
   return convert(object);
 }
+
+/// This will be lowered to a a call to `_wrapDartCallback`.
+@patch
+F allowInterop<F extends Function>(F f) => throw UnimplementedError();
+
+@patch
+Function allowInteropCaptureThis(Function f) => throw UnimplementedError();
diff --git a/sdk/lib/js/_js_annotations.dart b/sdk/lib/js/_js_annotations.dart
index 415547052d2..f053d6e90d1 100644
--- a/sdk/lib/js/_js_annotations.dart
+++ b/sdk/lib/js/_js_annotations.dart
@@ -7,7 +7,7 @@
 // https://github.com/dart-lang/sdk/blob/master/pkg/js/lib/js.dart
 library _js_annotations;
 
-export 'dart:js' show allowInterop, allowInteropCaptureThis;
+export 'dart:js_util' show allowInterop, allowInteropCaptureThis;
 
 class JS {
   final String? name;
diff --git a/sdk/lib/js/js.dart b/sdk/lib/js/js.dart
index 7f2921e1299..4fba6a40bb6 100644
--- a/sdk/lib/js/js.dart
+++ b/sdk/lib/js/js.dart
@@ -86,6 +86,8 @@ library dart.js;
 
 import 'dart:collection' show ListMixin;
 
+export 'dart:js_util' show allowInterop, allowInteropCaptureThis;
+
 /// The JavaScript global object, usually `window`.
 external JsObject get context;
 
@@ -209,25 +211,3 @@ class JsArray<E> extends JsObject with ListMixin<E> {
 
   external void sort([int compare(E a, E b)?]);
 }
-
-/// Returns a wrapper around function [f] that can be called from JavaScript
-/// using `package:js` JavaScript interop.
-///
-/// The calling conventions in Dart2Js differ from JavaScript and so, by
-/// default, it is not possible to call a Dart function directly. Wrapping with
-/// `allowInterop` creates a function that can be called from JavaScript or
-/// Dart. The semantics of the wrapped function are still more strict than
-/// JavaScript, and the function will throw if called with too many or too few
-/// arguments.
-///
-/// Calling this method repeatedly on a function will return the same result.
-external F allowInterop<F extends Function>(F f);
-
-/// Returns a wrapper around function [f] that can be called from JavaScript
-/// using `package:js` JavaScript interop, passing JavaScript `this` as the first
-/// argument.
-///
-/// See [allowInterop].
-///
-/// When called from Dart, `null` will be passed as the first argument.
-external Function allowInteropCaptureThis(Function f);
diff --git a/sdk/lib/js_util/js_util.dart b/sdk/lib/js_util/js_util.dart
index 75c9cf0e00f..513daafd856 100644
--- a/sdk/lib/js_util/js_util.dart
+++ b/sdk/lib/js_util/js_util.dart
@@ -256,3 +256,25 @@ external T createStaticInteropMock<T extends Object, U extends Object>(
 /// Expect.isTrue(counter.stringify(), export.stringify());
 /// ```
 external Object createDartExport<T extends Object>(T dartObject);
+
+/// Returns a wrapper around function [f] that can be called from JavaScript
+/// using `package:js` JavaScript interop.
+///
+/// The calling conventions in Dart web backends differ from JavaScript and so,
+/// by default, it is not possible to call a Dart function directly. Wrapping
+/// with `allowInterop` creates a function that can be called from JavaScript or
+/// Dart. The semantics of the wrapped function are still more strict than
+/// JavaScript, and the function will throw if called with too many or too few
+/// arguments.
+///
+/// Calling this method repeatedly on a function will return the same result.
+external F allowInterop<F extends Function>(F f);
+
+/// Returns a wrapper around function [f] that can be called from JavaScript
+/// using `package:js` JavaScript interop, passing JavaScript `this` as the
+/// first argument.
+///
+/// See [allowInterop].
+///
+/// When called from Dart, `null` will be passed as the first argument.
+external Function allowInteropCaptureThis(Function f);
diff --git a/sdk/lib/libraries.json b/sdk/lib/libraries.json
index b114c00a1ee..3829332c0ac 100644
--- a/sdk/lib/libraries.json
+++ b/sdk/lib/libraries.json
@@ -334,7 +334,10 @@
       },
       "js_util": {
         "uri": "js_util/js_util.dart",
-        "patches": "_internal/js_shared/lib/js_util_patch.dart"
+        "patches": [
+          "_internal/js_shared/lib/js_util_patch.dart",
+          "_internal/js_runtime/lib/js_allow_interop_patch.dart"
+        ]
       },
       "math": {
         "uri": "math/math.dart",
@@ -506,7 +509,10 @@
       },
       "js_util": {
         "uri": "js_util/js_util.dart",
-        "patches": "_internal/js_shared/lib/js_util_patch.dart"
+        "patches": [
+          "_internal/js_shared/lib/js_util_patch.dart",
+          "_internal/js_dev_runtime/patch/js_allow_interop_patch.dart"
+        ]
       },
       "svg": {
         "uri": "svg/dart2js/svg_dart2js.dart"
diff --git a/sdk/lib/libraries.yaml b/sdk/lib/libraries.yaml
index 474aa74a05d..1f89f2183d3 100644
--- a/sdk/lib/libraries.yaml
+++ b/sdk/lib/libraries.yaml
@@ -287,7 +287,9 @@ _dart2js_common:
 
     js_util:
       uri: "js_util/js_util.dart"
-      patches: "_internal/js_shared/lib/js_util_patch.dart"
+      patches:
+        - "_internal/js_shared/lib/js_util_patch.dart"
+        - "_internal/js_runtime/lib/js_allow_interop_patch.dart"
 
     math:
       uri: "math/math.dart"
@@ -457,7 +459,9 @@ dartdevc:
 
       js_util:
         uri: "js_util/js_util.dart"
-        patches: "_internal/js_shared/lib/js_util_patch.dart"
+        patches:
+          - "_internal/js_shared/lib/js_util_patch.dart"
+          - "_internal/js_dev_runtime/patch/js_allow_interop_patch.dart"
 
       svg:
         uri: "svg/dart2js/svg_dart2js.dart"