diff --git a/packages/animations/browser/src/private_export.ts b/packages/animations/browser/src/private_export.ts
index 01567e1fc8e..cf5bcec5178 100644
--- a/packages/animations/browser/src/private_export.ts
+++ b/packages/animations/browser/src/private_export.ts
@@ -32,3 +32,5 @@ export {
   camelCaseToDashCase as ɵcamelCaseToDashCase,
   normalizeKeyframes as ɵnormalizeKeyframes,
 } from './util';
+export {TransitionAnimationPlayer as ɵTransitionAnimationPlayer} from './render/transition_animation_engine';
+export {ENTER_CLASSNAME as ɵENTER_CLASSNAME, LEAVE_CLASSNAME as ɵLEAVE_CLASSNAME} from './util';
diff --git a/packages/animations/browser/test/BUILD.bazel b/packages/animations/browser/test/BUILD.bazel
index 9e869fb038e..158816937d9 100644
--- a/packages/animations/browser/test/BUILD.bazel
+++ b/packages/animations/browser/test/BUILD.bazel
@@ -5,8 +5,10 @@ ts_project(
     name = "test_lib",
     testonly = True,
     srcs = glob(["**/*.ts"]),
+    interop_deps = [
+        "//packages/private/testing",
+    ],
     deps = [
-        "//packages:types_rjs",
         "//packages/animations:animations_rjs",
         "//packages/animations/browser:browser_rjs",
         "//packages/animations/browser/testing:testing_rjs",
diff --git a/packages/animations/browser/test/dsl/animation_spec.ts b/packages/animations/browser/test/dsl/animation_spec.ts
index f4c61caa40b..734716d8ee2 100644
--- a/packages/animations/browser/test/dsl/animation_spec.ts
+++ b/packages/animations/browser/test/dsl/animation_spec.ts
@@ -5,6 +5,9 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.dev/license
  */
+
+import {isNode} from '@angular/private/testing';
+
 import {
   animate,
   animation,
diff --git a/packages/animations/browser/test/dsl/animation_trigger_spec.ts b/packages/animations/browser/test/dsl/animation_trigger_spec.ts
index 1955dd101a8..7eec73e8419 100644
--- a/packages/animations/browser/test/dsl/animation_trigger_spec.ts
+++ b/packages/animations/browser/test/dsl/animation_trigger_spec.ts
@@ -6,6 +6,8 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
+import {isNode} from '@angular/private/testing';
+
 import {animate, AnimationOptions, state, style, transition} from '../../../src/animations';
 import {AnimationTransitionInstruction} from '../../src/dsl/animation_transition_instruction';
 import {AnimationTrigger} from '../../src/dsl/animation_trigger';
diff --git a/packages/animations/browser/test/render/timeline_animation_engine_spec.ts b/packages/animations/browser/test/render/timeline_animation_engine_spec.ts
index 878b834d9d8..2fb10f850d3 100644
--- a/packages/animations/browser/test/render/timeline_animation_engine_spec.ts
+++ b/packages/animations/browser/test/render/timeline_animation_engine_spec.ts
@@ -5,6 +5,9 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.dev/license
  */
+
+import {isNode} from '@angular/private/testing';
+
 import {animate, AnimationMetadata, style} from '../../../src/animations';
 
 import {
diff --git a/packages/animations/browser/test/render/transition_animation_engine_spec.ts b/packages/animations/browser/test/render/transition_animation_engine_spec.ts
index 27da4b3a516..6a63b6bf1a5 100644
--- a/packages/animations/browser/test/render/transition_animation_engine_spec.ts
+++ b/packages/animations/browser/test/render/transition_animation_engine_spec.ts
@@ -10,7 +10,6 @@ import {
   AnimationEvent,
   AnimationMetadata,
   AnimationTriggerMetadata,
-  NoopAnimationPlayer,
   state,
   style,
   transition,
@@ -30,6 +29,7 @@ import {
   TransitionAnimationPlayer,
 } from '../../src/render/transition_animation_engine';
 import {MockAnimationDriver, MockAnimationPlayer} from '../../testing/src/mock_animation_driver';
+import {isNode} from '@angular/private/testing';
 
 const DEFAULT_NAMESPACE_ID = 'id';
 
diff --git a/packages/animations/browser/test/render/web_animations/web_animations_driver_spec.ts b/packages/animations/browser/test/render/web_animations/web_animations_driver_spec.ts
index 3c9c7a1d183..b68e41ce13e 100644
--- a/packages/animations/browser/test/render/web_animations/web_animations_driver_spec.ts
+++ b/packages/animations/browser/test/render/web_animations/web_animations_driver_spec.ts
@@ -5,6 +5,7 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.dev/license
  */
+import {isNode} from '@angular/private/testing';
 import {WebAnimationsDriver} from '../../../src/render/web_animations/web_animations_driver';
 import {WebAnimationsPlayer} from '../../../src/render/web_animations/web_animations_player';
 
diff --git a/packages/animations/test/BUILD.bazel b/packages/animations/test/BUILD.bazel
index fb5e0ffd036..4c8399c879f 100644
--- a/packages/animations/test/BUILD.bazel
+++ b/packages/animations/test/BUILD.bazel
@@ -12,6 +12,7 @@ ts_project(
         "//packages/platform-browser/animations",
         "//packages/platform-browser/animations/async",
         "//packages/platform-browser/testing",
+        "//packages/private/testing",
     ],
     deps = [
         "//packages:types_rjs",
diff --git a/packages/animations/test/browser_animation_builder_spec.ts b/packages/animations/test/browser_animation_builder_spec.ts
index 072cf1ad67b..2f0fc320986 100644
--- a/packages/animations/test/browser_animation_builder_spec.ts
+++ b/packages/animations/test/browser_animation_builder_spec.ts
@@ -20,6 +20,7 @@ import {ɵDomRendererFactory2 as DomRendererFactory2} from '@angular/platform-br
 import {NoopAnimationsModule} from '@angular/platform-browser/animations';
 import {ɵAsyncAnimationRendererFactory as AsyncAnimationRendererFactory} from '@angular/platform-browser/animations/async';
 import {BrowserTestingModule, platformBrowserTesting} from '@angular/platform-browser/testing';
+import {isNode} from '@angular/private/testing';
 
 describe('BrowserAnimationBuilder', () => {
   if (isNode) {
diff --git a/packages/common/http/test/resource_spec.ts b/packages/common/http/test/resource_spec.ts
index c5277c8d677..08cc88cc955 100644
--- a/packages/common/http/test/resource_spec.ts
+++ b/packages/common/http/test/resource_spec.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
+import {isNode} from '@angular/private/testing';
 import {ApplicationRef, Injector, signal} from '@angular/core';
 import {TestBed} from '@angular/core/testing';
 import {
diff --git a/packages/common/test/directives/ng_component_outlet_spec.ts b/packages/common/test/directives/ng_component_outlet_spec.ts
index 731b1f37d53..1891a21d35b 100644
--- a/packages/common/test/directives/ng_component_outlet_spec.ts
+++ b/packages/common/test/directives/ng_component_outlet_spec.ts
@@ -28,7 +28,7 @@ import {
   ViewContainerRef,
 } from '@angular/core';
 import {TestBed, waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('insert/remove', () => {
   beforeEach(() => {
diff --git a/packages/common/test/directives/ng_for_spec.ts b/packages/common/test/directives/ng_for_spec.ts
index 1dd494277cb..5f5f8d8c36d 100644
--- a/packages/common/test/directives/ng_for_spec.ts
+++ b/packages/common/test/directives/ng_for_spec.ts
@@ -10,7 +10,7 @@ import {CommonModule, NgFor, NgForOf} from '../../index';
 import {Component} from '@angular/core';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 let thisArg: any;
 
diff --git a/packages/common/test/directives/ng_if_spec.ts b/packages/common/test/directives/ng_if_spec.ts
index fe650afd97e..a68bf8f1b9f 100644
--- a/packages/common/test/directives/ng_if_spec.ts
+++ b/packages/common/test/directives/ng_if_spec.ts
@@ -10,7 +10,7 @@ import {CommonModule, NgIf, ɵgetDOM as getDOM} from '../../index';
 import {Component} from '@angular/core';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('ngIf directive', () => {
   let fixture: ComponentFixture<any>;
diff --git a/packages/common/test/directives/ng_optimized_image_spec.ts b/packages/common/test/directives/ng_optimized_image_spec.ts
index 762b4300896..bd7759432d5 100644
--- a/packages/common/test/directives/ng_optimized_image_spec.ts
+++ b/packages/common/test/directives/ng_optimized_image_spec.ts
@@ -6,14 +6,14 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {CommonModule, DOCUMENT, IMAGE_CONFIG, ImageConfig} from '../../index';
-import {RuntimeErrorCode} from '../../src/errors';
-import {PLATFORM_SERVER_ID} from '../../src/platform_id';
 import {ChangeDetectionStrategy, Component, PLATFORM_ID, Provider, Type} from '@angular/core';
 import {ComponentFixture, TestBed} from '@angular/core/testing';
 import {DomSanitizer, SafeResourceUrl} from '@angular/platform-browser';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
-import {withHead} from '@angular/private/testing';
+import {isBrowser, isNode, withHead} from '@angular/private/testing';
+import {expect} from '@angular/private/testing/matchers';
+import {CommonModule, DOCUMENT, IMAGE_CONFIG, ImageConfig} from '../../index';
+import {RuntimeErrorCode} from '../../src/errors';
+import {PLATFORM_SERVER_ID} from '../../src/platform_id';
 
 import {PRELOADED_IMAGES} from '../..//src/directives/ng_optimized_image/tokens';
 import {
diff --git a/packages/common/test/directives/ng_plural_spec.ts b/packages/common/test/directives/ng_plural_spec.ts
index 76f84cfc8c4..a66cc16dbac 100644
--- a/packages/common/test/directives/ng_plural_spec.ts
+++ b/packages/common/test/directives/ng_plural_spec.ts
@@ -9,7 +9,7 @@
 import {CommonModule, NgLocalization, NgPlural, NgPluralCase} from '../../index';
 import {Component, Injectable} from '@angular/core';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('ngPlural', () => {
   let fixture: ComponentFixture<any>;
diff --git a/packages/common/test/directives/ng_switch_spec.ts b/packages/common/test/directives/ng_switch_spec.ts
index 6cdd6b9efcf..2bc7ad91cf3 100644
--- a/packages/common/test/directives/ng_switch_spec.ts
+++ b/packages/common/test/directives/ng_switch_spec.ts
@@ -9,7 +9,7 @@
 import {CommonModule, NgSwitch, NgSwitchCase, NgSwitchDefault} from '../../index';
 import {Attribute, Component, Directive, TemplateRef, ViewChild} from '@angular/core';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('NgSwitch', () => {
   let fixture: ComponentFixture<any>;
diff --git a/packages/common/test/directives/ng_template_outlet_spec.ts b/packages/common/test/directives/ng_template_outlet_spec.ts
index bac56ce74d8..e635f498cd7 100644
--- a/packages/common/test/directives/ng_template_outlet_spec.ts
+++ b/packages/common/test/directives/ng_template_outlet_spec.ts
@@ -22,7 +22,7 @@ import {
   TemplateRef,
 } from '@angular/core';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('NgTemplateOutlet', () => {
   let fixture: ComponentFixture<any>;
diff --git a/packages/common/test/directives/non_bindable_spec.ts b/packages/common/test/directives/non_bindable_spec.ts
index f9c5fee918c..982407d50fa 100644
--- a/packages/common/test/directives/non_bindable_spec.ts
+++ b/packages/common/test/directives/non_bindable_spec.ts
@@ -9,8 +9,8 @@
 import {Component, Directive} from '@angular/core';
 import {ElementRef} from '@angular/core/src/linker/element_ref';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
-import {hasClass} from '@angular/platform-browser/testing/src/browser_util';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {hasClass} from '@angular/private/testing';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('non-bindable', () => {
   beforeEach(() => {
diff --git a/packages/common/test/pipes/json_pipe_spec.ts b/packages/common/test/pipes/json_pipe_spec.ts
index a2a73b4b089..f5ec44bed26 100644
--- a/packages/common/test/pipes/json_pipe_spec.ts
+++ b/packages/common/test/pipes/json_pipe_spec.ts
@@ -9,7 +9,7 @@
 import {CommonModule, JsonPipe} from '../../index';
 import {Component} from '@angular/core';
 import {TestBed, waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('JsonPipe', () => {
   const regNewLine = '\n';
diff --git a/packages/common/test/pipes/slice_pipe_spec.ts b/packages/common/test/pipes/slice_pipe_spec.ts
index 0d3e1401418..08742d9971b 100644
--- a/packages/common/test/pipes/slice_pipe_spec.ts
+++ b/packages/common/test/pipes/slice_pipe_spec.ts
@@ -9,7 +9,7 @@
 import {CommonModule, SlicePipe} from '../../index';
 import {Component} from '@angular/core';
 import {TestBed, waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('SlicePipe', () => {
   let list: number[];
diff --git a/packages/common/test/viewport_scroller_spec.ts b/packages/common/test/viewport_scroller_spec.ts
index aa01bb44467..b991a5bf65b 100644
--- a/packages/common/test/viewport_scroller_spec.ts
+++ b/packages/common/test/viewport_scroller_spec.ts
@@ -7,6 +7,7 @@
  */
 
 import {BrowserViewportScroller, ViewportScroller} from '../src/viewport_scroller';
+import {isNode} from '@angular/private/testing';
 
 describe('BrowserViewportScroller', () => {
   describe('setHistoryScrollRestoration', () => {
diff --git a/packages/compiler/src/compiler.ts b/packages/compiler/src/compiler.ts
index a10c3398c98..83173092df3 100644
--- a/packages/compiler/src/compiler.ts
+++ b/packages/compiler/src/compiler.ts
@@ -32,6 +32,7 @@ import {publishFacade} from './jit_compiler_facade';
 import * as outputAst from './output/output_ast';
 import {global} from './util';
 
+export {SECURITY_SCHEMA} from './schema/dom_security_schema';
 export {CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA, SchemaMetadata} from './core';
 export {core};
 
@@ -247,9 +248,11 @@ export * from './resource_loader';
 export * from './schema/dom_element_schema_registry';
 export * from './schema/element_schema_registry';
 export * from './directive_matching';
-export {Version} from './util';
+export {Version, escapeRegExp} from './util';
 export * from './version';
 export {outputAst};
+export {CompilerFacadeImpl} from './jit_compiler_facade';
+
 // This file only reexports content of the `src` folder. Keep it that way.
 
 // This function call has a global side effects and publishes the compiler into global namespace for
diff --git a/packages/compiler/test/BUILD.bazel b/packages/compiler/test/BUILD.bazel
index 270a737e7c9..664f82653d7 100644
--- a/packages/compiler/test/BUILD.bazel
+++ b/packages/compiler/test/BUILD.bazel
@@ -25,6 +25,7 @@ ts_library(
         "//packages/platform-browser",
         "//packages/platform-browser-dynamic",
         "//packages/platform-browser/testing",
+        "//packages/private/testing",
         "@npm//source-map",
     ],
 )
diff --git a/packages/compiler/test/expression_parser/BUILD.bazel b/packages/compiler/test/expression_parser/BUILD.bazel
index 012b8a24b8f..6f1263eee60 100644
--- a/packages/compiler/test/expression_parser/BUILD.bazel
+++ b/packages/compiler/test/expression_parser/BUILD.bazel
@@ -5,10 +5,10 @@ ts_library(
     testonly = True,
     srcs = glob(["**/*.ts"]),
     deps = [
-        "//packages:types",
         "//packages/compiler",
         "//packages/compiler/test/expression_parser/utils",
         "//packages/platform-browser/testing",
+        "//packages/private/testing",
     ],
 )
 
diff --git a/packages/compiler/test/expression_parser/parser_spec.ts b/packages/compiler/test/expression_parser/parser_spec.ts
index 89c48c8fed1..12ca2fd89f5 100644
--- a/packages/compiler/test/expression_parser/parser_spec.ts
+++ b/packages/compiler/test/expression_parser/parser_spec.ts
@@ -22,7 +22,7 @@ import {
 } from '../../src/expression_parser/ast';
 import {Lexer} from '../../src/expression_parser/lexer';
 import {Parser, SplitInterpolation} from '../../src/expression_parser/parser';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 import {unparse, unparseWithSpan} from './utils/unparser';
 import {validate} from './utils/validator';
diff --git a/packages/compiler/test/i18n/integration_common.ts b/packages/compiler/test/i18n/integration_common.ts
index d3eaeaac324..c6f8e043cbf 100644
--- a/packages/compiler/test/i18n/integration_common.ts
+++ b/packages/compiler/test/i18n/integration_common.ts
@@ -15,8 +15,8 @@ import {ResourceLoader} from '../../src/resource_loader';
 import {Component, DebugElement, TRANSLATIONS, TRANSLATIONS_FORMAT} from '@angular/core';
 import {ComponentFixture, TestBed} from '@angular/core/testing';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {stringifyElement} from '@angular/platform-browser/testing/src/browser_util';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {stringifyElement} from '@angular/private/testing';
+import {expect} from '@angular/private/testing/matchers';
 
 @Component({
   selector: 'i18n-cmp',
diff --git a/packages/compiler/test/i18n/integration_xliff2_spec.ts b/packages/compiler/test/i18n/integration_xliff2_spec.ts
index 6ecbffc2097..a370ebfd817 100644
--- a/packages/compiler/test/i18n/integration_xliff2_spec.ts
+++ b/packages/compiler/test/i18n/integration_xliff2_spec.ts
@@ -8,7 +8,7 @@
 
 import {Xliff2} from '../../src/i18n/serializers/xliff2';
 import {waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 import {
   configureCompiler,
diff --git a/packages/compiler/test/i18n/integration_xliff_spec.ts b/packages/compiler/test/i18n/integration_xliff_spec.ts
index fecdfd84991..1937d093f20 100644
--- a/packages/compiler/test/i18n/integration_xliff_spec.ts
+++ b/packages/compiler/test/i18n/integration_xliff_spec.ts
@@ -8,7 +8,7 @@
 
 import {Xliff} from '../../src/i18n/serializers/xliff';
 import {waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 import {
   configureCompiler,
diff --git a/packages/compiler/test/i18n/integration_xmb_xtb_spec.ts b/packages/compiler/test/i18n/integration_xmb_xtb_spec.ts
index be68a514307..48144f84ddc 100644
--- a/packages/compiler/test/i18n/integration_xmb_xtb_spec.ts
+++ b/packages/compiler/test/i18n/integration_xmb_xtb_spec.ts
@@ -8,7 +8,7 @@
 
 import {Xmb} from '../../src/i18n/serializers/xmb';
 import {waitForAsync} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 import {
   configureCompiler,
diff --git a/packages/compiler/test/integration_spec.ts b/packages/compiler/test/integration_spec.ts
index 3cb2c2c2f6d..4c30b5b267e 100644
--- a/packages/compiler/test/integration_spec.ts
+++ b/packages/compiler/test/integration_spec.ts
@@ -9,7 +9,7 @@
 import {Component, Directive, Input} from '@angular/core';
 import {ComponentFixture, TestBed, waitForAsync} from '@angular/core/testing';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('integration tests', () => {
   let fixture: ComponentFixture<TestComponent>;
diff --git a/packages/compiler/test/schema/dom_element_schema_registry_spec.ts b/packages/compiler/test/schema/dom_element_schema_registry_spec.ts
index 4de68c1be93..209b609ef6d 100644
--- a/packages/compiler/test/schema/dom_element_schema_registry_spec.ts
+++ b/packages/compiler/test/schema/dom_element_schema_registry_spec.ts
@@ -8,6 +8,7 @@
 
 import {DomElementSchemaRegistry} from '../../src/schema/dom_element_schema_registry';
 import {CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA, SecurityContext} from '@angular/core';
+import {isNode} from '@angular/private/testing';
 
 import {Element} from '../../src/ml_parser/ast';
 import {HtmlParser} from '../../src/ml_parser/html_parser';
diff --git a/packages/compiler/test/selector/BUILD.bazel b/packages/compiler/test/selector/BUILD.bazel
index b583f1b2298..a8cc08a01ea 100644
--- a/packages/compiler/test/selector/BUILD.bazel
+++ b/packages/compiler/test/selector/BUILD.bazel
@@ -8,6 +8,7 @@ ts_library(
         "//packages:types",
         "//packages/compiler",
         "//packages/platform-browser/testing",
+        "//packages/private/testing",
     ],
 )
 
diff --git a/packages/compiler/test/selector/selector_spec.ts b/packages/compiler/test/selector/selector_spec.ts
index 211cd1116cb..4517e442d51 100644
--- a/packages/compiler/test/selector/selector_spec.ts
+++ b/packages/compiler/test/selector/selector_spec.ts
@@ -7,7 +7,7 @@
  */
 
 import {CssSelector, SelectorMatcher} from '../../src/directive_matching';
-import {el} from '@angular/platform-browser/testing/src/browser_util';
+import {el} from '@angular/private/testing';
 
 describe('SelectorMatcher', () => {
   let matcher: SelectorMatcher;
diff --git a/packages/forms/test/reactive_integration_spec.ts b/packages/forms/test/reactive_integration_spec.ts
index ce3cbfdda16..8be1f49ff60 100644
--- a/packages/forms/test/reactive_integration_spec.ts
+++ b/packages/forms/test/reactive_integration_spec.ts
@@ -18,6 +18,11 @@ import {
   ViewChild,
 } from '@angular/core';
 import {ComponentFixture, fakeAsync, TestBed, tick} from '@angular/core/testing';
+import {By} from '@angular/platform-browser/src/dom/debug/by';
+import {dispatchEvent, isNode, sortedClassList} from '@angular/private/testing';
+import {expect} from '@angular/private/testing/matchers';
+import {merge, NEVER, Observable, of, Subject, Subscription, timer} from 'rxjs';
+import {map, tap} from 'rxjs/operators';
 import {
   AbstractControl,
   AsyncValidator,
@@ -41,11 +46,6 @@ import {
   Validator,
   Validators,
 } from '../index';
-import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {dispatchEvent, sortedClassList} from '@angular/platform-browser/testing/src/browser_util';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
-import {merge, NEVER, Observable, of, Subject, Subscription, timer} from 'rxjs';
-import {map, tap} from 'rxjs/operators';
 
 import {
   ControlEvent,
diff --git a/packages/forms/test/template_integration_spec.ts b/packages/forms/test/template_integration_spec.ts
index 4606a010f53..c23a8a32ebc 100644
--- a/packages/forms/test/template_integration_spec.ts
+++ b/packages/forms/test/template_integration_spec.ts
@@ -26,7 +26,7 @@ import {
   Validator,
 } from '../index';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {dispatchEvent, sortedClassList} from '@angular/platform-browser/testing/src/browser_util';
+import {dispatchEvent, sortedClassList} from '@angular/private/testing';
 import {merge} from 'rxjs';
 
 import {NgModelCustomComp, NgModelCustomWrapper} from './value_accessor_integration_spec';
diff --git a/packages/forms/test/value_accessor_integration_spec.ts b/packages/forms/test/value_accessor_integration_spec.ts
index 6d3270d0772..724119e4c79 100644
--- a/packages/forms/test/value_accessor_integration_spec.ts
+++ b/packages/forms/test/value_accessor_integration_spec.ts
@@ -33,7 +33,7 @@ import {
   Validators,
 } from '../index';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
-import {dispatchEvent} from '@angular/platform-browser/testing/src/browser_util';
+import {dispatchEvent, isNode} from '@angular/private/testing';
 
 describe('value accessors', () => {
   function initTest<T>(component: Type<T>, ...directives: Type<any>[]): ComponentFixture<T> {
diff --git a/packages/platform-browser-dynamic/test/metadata_overrider_spec.ts b/packages/platform-browser-dynamic/test/metadata_overrider_spec.ts
index 1494cf9deda..3f2708baf02 100644
--- a/packages/platform-browser-dynamic/test/metadata_overrider_spec.ts
+++ b/packages/platform-browser-dynamic/test/metadata_overrider_spec.ts
@@ -7,7 +7,7 @@
  */
 
 import {ɵMetadataOverrider as MetadataOverrider} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 interface SomeMetadataType {
   plainProp?: string;
diff --git a/packages/platform-browser-dynamic/test/resource_loader/resource_loader_impl_spec.ts b/packages/platform-browser-dynamic/test/resource_loader/resource_loader_impl_spec.ts
index 69ae3d5bac0..ba8c9af559e 100644
--- a/packages/platform-browser-dynamic/test/resource_loader/resource_loader_impl_spec.ts
+++ b/packages/platform-browser-dynamic/test/resource_loader/resource_loader_impl_spec.ts
@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
+import {isBrowser} from '@angular/private/testing';
 import {ResourceLoaderImpl} from '../../src/resource_loader/resource_loader_impl';
 
 if (isBrowser) {
diff --git a/packages/platform-browser-dynamic/test/testing_public_browser_spec.ts b/packages/platform-browser-dynamic/test/testing_public_browser_spec.ts
index 9c191473d6a..0d048aa7e54 100644
--- a/packages/platform-browser-dynamic/test/testing_public_browser_spec.ts
+++ b/packages/platform-browser-dynamic/test/testing_public_browser_spec.ts
@@ -13,6 +13,7 @@ import {ResourceLoaderImpl} from '../src/resource_loader/resource_loader_impl';
 import {BrowserDynamicTestingModule, platformBrowserDynamicTesting} from '../testing';
 import {BrowserTestingModule, platformBrowserTesting} from '@angular/platform-browser/testing';
 import {NoopAnimationsModule} from '@angular/platform-browser/animations';
+import {isBrowser} from '@angular/private/testing';
 
 // Components for the tests.
 class FancyService {
diff --git a/packages/platform-browser/animations/async/test/animation_renderer_spec.ts b/packages/platform-browser/animations/async/test/animation_renderer_spec.ts
index 4914d75dea2..1ae7dc99789 100644
--- a/packages/platform-browser/animations/async/test/animation_renderer_spec.ts
+++ b/packages/platform-browser/animations/async/test/animation_renderer_spec.ts
@@ -37,7 +37,7 @@ import {
 import {TestBed} from '@angular/core/testing';
 import {ɵDomRendererFactory2 as DomRendererFactory2} from '../../../index';
 import {InjectableAnimationEngine} from '../../../animations/src/providers';
-import {el} from '../../../testing/src/browser_util';
+import {el, isNode} from '@angular/private/testing';
 
 import {
   AsyncAnimationRendererFactory,
diff --git a/packages/platform-browser/animations/test/animation_renderer_spec.ts b/packages/platform-browser/animations/test/animation_renderer_spec.ts
index 8b98eb1ae6b..d22bba50c7d 100644
--- a/packages/platform-browser/animations/test/animation_renderer_spec.ts
+++ b/packages/platform-browser/animations/test/animation_renderer_spec.ts
@@ -38,9 +38,7 @@ import {
 } from '../index';
 import {provideAnimationsAsync} from '../async';
 import {DomRendererFactory2} from '../../src/dom/dom_renderer';
-import {withBody} from '@angular/private/testing';
-
-import {el} from '../../testing/src/browser_util';
+import {withBody, isNode, el} from '@angular/private/testing';
 
 (function () {
   if (isNode) return;
diff --git a/packages/platform-browser/animations/test/noop_animations_module_spec.ts b/packages/platform-browser/animations/test/noop_animations_module_spec.ts
index 95aaa6c3d02..590aab279fa 100644
--- a/packages/platform-browser/animations/test/noop_animations_module_spec.ts
+++ b/packages/platform-browser/animations/test/noop_animations_module_spec.ts
@@ -10,6 +10,7 @@ import {ɵAnimationEngine} from '@angular/animations/browser';
 import {Component} from '@angular/core';
 import {TestBed} from '@angular/core/testing';
 import {BrowserAnimationsModule, NoopAnimationsModule, provideNoopAnimations} from '../index';
+import {isNode} from '@angular/private/testing';
 
 describe('NoopAnimationsModule', () => {
   beforeEach(() => {
diff --git a/packages/platform-browser/test/browser/bootstrap_spec.ts b/packages/platform-browser/test/browser/bootstrap_spec.ts
index 5a163fe28db..60c5ec96a59 100644
--- a/packages/platform-browser/test/browser/bootstrap_spec.ts
+++ b/packages/platform-browser/test/browser/bootstrap_spec.ts
@@ -53,7 +53,8 @@ import {Log} from '@angular/core/testing/src/testing_internal';
 import {BrowserModule} from '../../index';
 import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
 import {provideAnimations, provideNoopAnimations} from '../../animations';
-import {expect} from '../../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
+import {isNode} from '@angular/private/testing';
 
 import {bootstrapApplication} from '../../src/browser';
 
diff --git a/packages/platform-browser/test/browser/meta_spec.ts b/packages/platform-browser/test/browser/meta_spec.ts
index 449abdf1930..3a4bab9eb93 100644
--- a/packages/platform-browser/test/browser/meta_spec.ts
+++ b/packages/platform-browser/test/browser/meta_spec.ts
@@ -10,7 +10,7 @@ import {ɵgetDOM as getDOM} from '@angular/common';
 import {Injectable} from '@angular/core';
 import {TestBed} from '@angular/core/testing';
 import {BrowserModule, Meta} from '../../index';
-import {expect} from '../../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('Meta service', () => {
   let doc: Document;
diff --git a/packages/platform-browser/test/browser/title_spec.ts b/packages/platform-browser/test/browser/title_spec.ts
index 5547e0af3f5..4c79d343621 100644
--- a/packages/platform-browser/test/browser/title_spec.ts
+++ b/packages/platform-browser/test/browser/title_spec.ts
@@ -10,7 +10,7 @@ import {ɵgetDOM as getDOM} from '@angular/common';
 import {Injectable} from '@angular/core';
 import {TestBed} from '@angular/core/testing';
 import {BrowserModule, Title} from '../../index';
-import {expect} from '../../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('title service', () => {
   let doc: Document;
diff --git a/packages/platform-browser/test/browser/tools/tools_spec.ts b/packages/platform-browser/test/browser/tools/tools_spec.ts
index 4a8a44d04f8..ffdd28137ff 100644
--- a/packages/platform-browser/test/browser/tools/tools_spec.ts
+++ b/packages/platform-browser/test/browser/tools/tools_spec.ts
@@ -8,6 +8,7 @@
 
 import {ApplicationRef, Injector, ɵglobal as global} from '@angular/core';
 import {ComponentRef} from '@angular/core/src/render3';
+import {isNode} from '@angular/private/testing';
 import {disableDebugTools, enableDebugTools} from '../../../index';
 
 import {AngularProfiler} from '../../../src/browser/tools/common_tools';
diff --git a/packages/platform-browser/test/dom/dom_renderer_spec.ts b/packages/platform-browser/test/dom/dom_renderer_spec.ts
index 55693e4bf55..72110bd0d38 100644
--- a/packages/platform-browser/test/dom/dom_renderer_spec.ts
+++ b/packages/platform-browser/test/dom/dom_renderer_spec.ts
@@ -13,7 +13,8 @@ import {
   NAMESPACE_URIS,
   REMOVE_STYLES_ON_COMPONENT_DESTROY,
 } from '../../src/dom/dom_renderer';
-import {expect} from '../../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
+import {isNode} from '@angular/private/testing';
 
 describe('DefaultDomRendererV2', () => {
   if (isNode) {
diff --git a/packages/platform-browser/test/dom/events/event_manager_spec.ts b/packages/platform-browser/test/dom/events/event_manager_spec.ts
index a8a1b9e0902..83dd12a3689 100644
--- a/packages/platform-browser/test/dom/events/event_manager_spec.ts
+++ b/packages/platform-browser/test/dom/events/event_manager_spec.ts
@@ -11,8 +11,8 @@ import {NgZone} from '@angular/core/src/zone/ng_zone';
 import {DomEventsPlugin} from '../../../src/dom/events/dom_events';
 import {EventManager, EventManagerPlugin} from '../../../src/dom/events/event_manager';
 
-import {createMouseEvent, el} from '../../../testing/src/browser_util';
 import {TestBed} from '@angular/core/testing';
+import {isNode, createMouseEvent, el} from '@angular/private/testing';
 
 (function () {
   if (isNode) return;
diff --git a/packages/platform-browser/test/dom/events/hammer_gestures_spec.ts b/packages/platform-browser/test/dom/events/hammer_gestures_spec.ts
index 1dc09e025d4..32c485b574e 100644
--- a/packages/platform-browser/test/dom/events/hammer_gestures_spec.ts
+++ b/packages/platform-browser/test/dom/events/hammer_gestures_spec.ts
@@ -9,6 +9,7 @@ import {ApplicationRef, Injector, NgZone} from '@angular/core';
 import {fakeAsync, inject, TestBed, tick} from '@angular/core/testing';
 import {EventManager} from '../../../index';
 import {HammerGestureConfig, HammerGesturesPlugin} from '../../../src/dom/events/hammer_gestures';
+import {isNode} from '@angular/private/testing';
 
 describe('HammerGesturesPlugin', () => {
   let plugin: HammerGesturesPlugin;
diff --git a/packages/platform-browser/test/dom/shadow_dom_spec.ts b/packages/platform-browser/test/dom/shadow_dom_spec.ts
index f9bcc9e95aa..6e3e4fa0145 100644
--- a/packages/platform-browser/test/dom/shadow_dom_spec.ts
+++ b/packages/platform-browser/test/dom/shadow_dom_spec.ts
@@ -9,7 +9,8 @@
 import {Component, NgModule, ViewEncapsulation} from '@angular/core';
 import {TestBed} from '@angular/core/testing';
 import {BrowserModule} from '../../index';
-import {expect} from '../../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
+import {isNode} from '@angular/private/testing';
 
 describe('ShadowDOM Support', () => {
   if (isNode) {
diff --git a/packages/platform-browser/test/dom/shared_styles_host_spec.ts b/packages/platform-browser/test/dom/shared_styles_host_spec.ts
index 9dc9802c1b1..261ae29a6df 100644
--- a/packages/platform-browser/test/dom/shared_styles_host_spec.ts
+++ b/packages/platform-browser/test/dom/shared_styles_host_spec.ts
@@ -8,7 +8,7 @@
 
 import {ɵgetDOM as getDOM} from '@angular/common';
 import {SharedStylesHost} from '../../src/dom/shared_styles_host';
-import {expect} from '../../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 
 describe('SharedStylesHost', () => {
   let doc: Document;
diff --git a/packages/platform-browser/test/testing_public_spec.ts b/packages/platform-browser/test/testing_public_spec.ts
index 1daca1b24a2..9fea7000826 100644
--- a/packages/platform-browser/test/testing_public_spec.ts
+++ b/packages/platform-browser/test/testing_public_spec.ts
@@ -34,7 +34,8 @@ import {
   waitForAsync,
   withModule,
 } from '@angular/core/testing';
-import {expect} from '../testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
+import {isBrowser} from '@angular/private/testing';
 
 // Services, and components for the tests.
 
diff --git a/packages/platform-server/src/private_export.ts b/packages/platform-server/src/private_export.ts
index ce5fb0fc2a8..6529cf24007 100644
--- a/packages/platform-server/src/private_export.ts
+++ b/packages/platform-server/src/private_export.ts
@@ -12,3 +12,4 @@ export {
 } from './server';
 export {SERVER_CONTEXT as ɵSERVER_CONTEXT, renderInternal as ɵrenderInternal} from './utils';
 export {ENABLE_DOM_EMULATION as ɵENABLE_DOM_EMULATION} from './tokens';
+export {DominoAdapter as ɵDominoAdapter} from './domino_adapter';
diff --git a/packages/private/testing/BUILD.bazel b/packages/private/testing/BUILD.bazel
index 1fc4db4a7a1..0e67017fe96 100644
--- a/packages/private/testing/BUILD.bazel
+++ b/packages/private/testing/BUILD.bazel
@@ -16,7 +16,10 @@ ng_module(
     ),
     module_name = "@angular/private/testing",
     deps = [
+        "//packages/common",
         "//packages/core",
+        "//packages/core/testing",
+        "//packages/platform-browser",
         "//packages/platform-server:bundled_domino_lib",
     ],
 )
diff --git a/packages/private/testing/index.ts b/packages/private/testing/index.ts
index fe6a0ac8ac1..737794cd6ab 100644
--- a/packages/private/testing/index.ts
+++ b/packages/private/testing/index.ts
@@ -7,3 +7,5 @@
  */
 
 export * from './src/utils';
+export * from './src/browser_utils';
+export * from './src/globals';
diff --git a/packages/platform-browser/testing/src/matchers.ts b/packages/private/testing/matchers/index.ts
similarity index 98%
rename from packages/platform-browser/testing/src/matchers.ts
rename to packages/private/testing/matchers/index.ts
index a56199093fd..89d5b3046e3 100644
--- a/packages/platform-browser/testing/src/matchers.ts
+++ b/packages/private/testing/matchers/index.ts
@@ -9,9 +9,9 @@
 import {ɵgetDOM as getDOM} from '@angular/common';
 import {Type} from '@angular/core';
 import {ComponentFixture} from '@angular/core/testing';
-import {By} from '../../index';
+import {By} from '@angular/platform-browser';
 
-import {childNodesAsList, hasClass, hasStyle, isCommentNode} from './browser_util';
+import {childNodesAsList, hasClass, hasStyle, isCommentNode} from '../src/browser_utils';
 
 /**
  * Jasmine matchers that check Angular specific conditions.
diff --git a/packages/platform-browser/testing/src/browser_util.ts b/packages/private/testing/src/browser_utils.ts
similarity index 100%
rename from packages/platform-browser/testing/src/browser_util.ts
rename to packages/private/testing/src/browser_utils.ts
diff --git a/packages/private/testing/src/globals.ts b/packages/private/testing/src/globals.ts
new file mode 100644
index 00000000000..2a883871ceb
--- /dev/null
+++ b/packages/private/testing/src/globals.ts
@@ -0,0 +1,12 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
+
+// Set by the test initialization scripts.
+
+export const isBrowser = !!(globalThis as any).isBrowser;
+export const isNode = !!(globalThis as any).isNode;
diff --git a/packages/router/test/bootstrap.spec.ts b/packages/router/test/bootstrap.spec.ts
index e9a31a2f381..ded247cdfd1 100644
--- a/packages/router/test/bootstrap.spec.ts
+++ b/packages/router/test/bootstrap.spec.ts
@@ -22,6 +22,7 @@ import {
   provideZonelessChangeDetection,
 } from '@angular/core';
 import {TestBed} from '@angular/core/testing';
+import {isNode} from '@angular/private/testing';
 import {BrowserModule} from '@angular/platform-browser';
 import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
 import {
diff --git a/packages/router/test/computed_state_restoration.spec.ts b/packages/router/test/computed_state_restoration.spec.ts
index f3101a187ad..24f42c1e2dd 100644
--- a/packages/router/test/computed_state_restoration.spec.ts
+++ b/packages/router/test/computed_state_restoration.spec.ts
@@ -9,7 +9,7 @@
 import {Location} from '@angular/common';
 import {Component, Injectable, NgModule, Type} from '@angular/core';
 import {ComponentFixture, TestBed} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {Router, RouterModule, RouterOutlet, UrlTree, withRouterConfig} from '../index';
 import {EMPTY, of} from 'rxjs';
 
diff --git a/packages/router/test/integration/eager_url_update_strategy.spec.ts b/packages/router/test/integration/eager_url_update_strategy.spec.ts
index f4de8b83b79..92ec31d9e83 100644
--- a/packages/router/test/integration/eager_url_update_strategy.spec.ts
+++ b/packages/router/test/integration/eager_url_update_strategy.spec.ts
@@ -30,7 +30,7 @@ import {
   createRoot,
   advance,
 } from './integration_helpers';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {timeout} from '../helpers';
 
 export function eagerUrlUpdateStrategyIntegrationSuite() {
diff --git a/packages/router/test/integration/guards.spec.ts b/packages/router/test/integration/guards.spec.ts
index 58590b08570..f77b4879ca7 100644
--- a/packages/router/test/integration/guards.spec.ts
+++ b/packages/router/test/integration/guards.spec.ts
@@ -53,7 +53,7 @@ import {
 } from '../../src';
 import {wrapIntoObservable} from '../../src/utils/collection';
 import {RouterTestingHarness} from '../../testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {
   TeamCmp,
   RootCmp,
diff --git a/packages/router/test/integration/integration.spec.ts b/packages/router/test/integration/integration.spec.ts
index 8759a8fb5eb..2948f8129c3 100644
--- a/packages/router/test/integration/integration.spec.ts
+++ b/packages/router/test/integration/integration.spec.ts
@@ -16,7 +16,7 @@ import {
   signal,
 } from '@angular/core';
 import {TestBed} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {
   ActivationEnd,
   ActivationStart,
diff --git a/packages/router/test/integration/lazy_loading.spec.ts b/packages/router/test/integration/lazy_loading.spec.ts
index ec88fd9222f..db450e95050 100644
--- a/packages/router/test/integration/lazy_loading.spec.ts
+++ b/packages/router/test/integration/lazy_loading.spec.ts
@@ -17,7 +17,7 @@ import {
   QueryList,
 } from '@angular/core';
 import {TestBed} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {
   Router,
   Event,
diff --git a/packages/router/test/integration/navigation_errors.spec.ts b/packages/router/test/integration/navigation_errors.spec.ts
index c0421af0562..f140c5298b9 100644
--- a/packages/router/test/integration/navigation_errors.spec.ts
+++ b/packages/router/test/integration/navigation_errors.spec.ts
@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 import {inject, Injectable} from '@angular/core';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {Location} from '@angular/common';
 import {TestBed} from '@angular/core/testing';
 import {
diff --git a/packages/router/test/integration/route_reuse_strategy.spec.ts b/packages/router/test/integration/route_reuse_strategy.spec.ts
index 47fee448f76..64370ee5e95 100644
--- a/packages/router/test/integration/route_reuse_strategy.spec.ts
+++ b/packages/router/test/integration/route_reuse_strategy.spec.ts
@@ -5,7 +5,7 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.dev/license
  */
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {CommonModule, Location} from '@angular/common';
 import {Component, OnDestroy, NgModule, InjectionToken, Inject, signal} from '@angular/core';
 import {TestBed} from '@angular/core/testing';
diff --git a/packages/router/test/integration/router_events.spec.ts b/packages/router/test/integration/router_events.spec.ts
index c183e4e540b..3a1ae6c07ea 100644
--- a/packages/router/test/integration/router_events.spec.ts
+++ b/packages/router/test/integration/router_events.spec.ts
@@ -8,7 +8,7 @@
 import {filter, tap, first} from 'rxjs/operators';
 import {Event} from '../../index';
 import {TestBed} from '@angular/core/testing';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {
   Router,
   ChildActivationStart,
diff --git a/packages/router/test/integration/router_links.spec.ts b/packages/router/test/integration/router_links.spec.ts
index 23f2be2fe8b..987beab9ccd 100644
--- a/packages/router/test/integration/router_links.spec.ts
+++ b/packages/router/test/integration/router_links.spec.ts
@@ -10,7 +10,7 @@ import {Location} from '@angular/common';
 import {TestBed, ComponentFixture} from '@angular/core/testing';
 import {By} from '@angular/platform-browser/src/dom/debug/by';
 import {Router} from '../../src';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {expect} from '@angular/private/testing/matchers';
 import {
   RootCmp,
   BlankCmp,
diff --git a/packages/router/test/view_transitions.spec.ts b/packages/router/test/view_transitions.spec.ts
index 4dfaeceae37..26c3cc0d1d0 100644
--- a/packages/router/test/view_transitions.spec.ts
+++ b/packages/router/test/view_transitions.spec.ts
@@ -9,7 +9,7 @@
 import {DOCUMENT} from '@angular/common';
 import {Component, destroyPlatform, provideZonelessChangeDetection} from '@angular/core';
 import {bootstrapApplication} from '@angular/platform-browser';
-import {withBody} from '@angular/private/testing';
+import {withBody, isNode} from '@angular/private/testing';
 import {
   Event,
   NavigationEnd,
diff --git a/packages/tsconfig-build.json b/packages/tsconfig-build.json
index 10d3126ab0e..9501d611e46 100644
--- a/packages/tsconfig-build.json
+++ b/packages/tsconfig-build.json
@@ -32,7 +32,8 @@
     "importHelpers": true,
     "paths": {
       "zone.js": ["./zone.js/lib/zone"],
-      "@angular/*": ["./*/index"]
+      "@angular/*": ["./*/index"],
+      "@angular/common/locales/*": ["./common/locales/*"]
     }
   },
   "bazelOptions": {
diff --git a/packages/types.d.ts b/packages/types.d.ts
index f247117cd5c..3921605637c 100644
--- a/packages/types.d.ts
+++ b/packages/types.d.ts
@@ -21,6 +21,3 @@
 // /packages/tsconfig-test.json when `testonly = True` is set
 // and packages such as platform-server that need these types should
 // use `/// <reference types="x">` in their main entry points
-
-declare let isNode: boolean;
-declare let isBrowser: boolean;