diff --git a/.gitmessage b/.gitmessage
index 46b6ffbd5c..536045e1d9 100644
--- a/.gitmessage
+++ b/.gitmessage
@@ -105,9 +105,9 @@ Fixes #<issue number>
 #   │       │
 #   │       └─⫸ Commit Scope: animations|bazel|benchpress|common|compiler|compiler-cli|core|
 #   │                          elements|forms|http|language-service|localize|platform-browser|
-#   │                          platform-browser-dynamic|platform-server|platform-webworker|
-#   │                          platform-webworker-dynamic|router|service-worker|upgrade|zone.js|
-#   │                          packaging|changelog|dev-infra|docs-infra|migrations|ngcc|ve
+#   │                          platform-browser-dynamic|platform-server|router|service-worker|
+#   │                          upgrade|zone.js|packaging|changelog|dev-infra|docs-infra|migrations|
+#   │                          ngcc|ve
 #   │                          https://github.com/angular/angular/blob/master/CONTRIBUTING.md#scope
 #   │
 #   └─⫸ Commit Type: build|ci|docs|feat|fix|perf|refactor|style|test
diff --git a/.pullapprove.yml b/.pullapprove.yml
index d521cea358..11e5274bde 100644
--- a/.pullapprove.yml
+++ b/.pullapprove.yml
@@ -303,8 +303,6 @@ groups:
           'packages/platform-browser/**',
           'packages/examples/platform-browser/**',
           'packages/platform-browser-dynamic/**',
-          'packages/platform-webworker/**',
-          'packages/platform-webworker-dynamic/**',
           'packages/examples/common/**',
           'packages/docs/**',
           'aio/content/guide/accessibility.md',
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a9023101bf..47347ad4f2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -209,9 +209,9 @@ Any line of the commit message cannot be longer than 100 characters.
   │       │
   │       └─⫸ Commit Scope: animations|bazel|benchpress|common|compiler|compiler-cli|core|
   │                          elements|forms|http|language-service|localize|platform-browser|
-  │                          platform-browser-dynamic|platform-server|platform-webworker|
-  │                          platform-webworker-dynamic|router|service-worker|upgrade|zone.js|
-  │                          packaging|changelog|dev-infra|docs-infra|migrations|ngcc|ve
+  │                          platform-browser-dynamic|platform-server|router|service-worker|
+  │                          upgrade|zone.js|packaging|changelog|dev-infra|docs-infra|migrations|
+  │                          ngcc|ve
   │
   └─⫸ Commit Type: build|ci|docs|feat|fix|perf|refactor|style|test
 ```
@@ -253,8 +253,6 @@ The following is the list of supported scopes:
 * `platform-browser`
 * `platform-browser-dynamic`
 * `platform-server`
-* `platform-webworker`
-* `platform-webworker-dynamic`
 * `router`
 * `service-worker`
 * `upgrade`
diff --git a/aio/content/guide/deprecations.md b/aio/content/guide/deprecations.md
index 7e44f6ddf3..20205263e3 100644
--- a/aio/content/guide/deprecations.md
+++ b/aio/content/guide/deprecations.md
@@ -48,7 +48,6 @@ v9 - v12
 | `@angular/upgrade`            | [`@angular/upgrade`](#upgrade)                                                | <!--v8--> v11 |
 | `@angular/upgrade`            | [`getAngularLib`](#upgrade-static)                                            | <!--v8--> v11 |
 | `@angular/upgrade`            | [`setAngularLib`](#upgrade-static)                                            | <!--v8--> v11 |
-| `@angular/platform-webworker` | [All entry points](api/platform-webworker)                                    | <!--v8--> v11 |
 | template syntax               | [`<template`>](#template-tag)                                                 | <!--v7--> v11 |
 | polyfills                     | [reflect-metadata](#reflect-metadata)                                         | <!--v8--> v11 |
 | npm package format            | [`esm5` and `fesm5` entry-points in @angular/* npm packages](guide/deprecations#esm5-fesm5) | <!-- v9 --> v11 |
@@ -123,20 +122,6 @@ Tip: In the [API reference section](api) of this doc site, deprecated APIs are i
 | --- | ----------- | --------------------- | ----- |
 | [`preserveQueryParams`](api/router/UrlCreationOptions#preserveQueryParams) | [`queryParamsHandling`](api/router/UrlCreationOptions#queryParamsHandling) | v4 | none |
 
-{@a platform-webworker}
-### @angular/platform-webworker
-
-| API | Replacement | Deprecation announced | Notes |
-| --- | ----------- | --------------------- | ----- |
-| [All entry points](api/platform-webworker) | none | v8 | See [platform-webworker](#webworker-apps). |
-
-{@a platform-webworker-dynamic}
-### @angular/platform-webworker-dynamic
-
-| API | Replacement | Deprecation announced | Notes |
-| --- | ----------- | --------------------- | ----- |
-| [All entry points](api/platform-webworker-dynamic) | none | v8 | See [platform-webworker](#webworker-apps). |
-
 {@a upgrade}
 ### @angular/upgrade
 
@@ -391,28 +376,6 @@ These two properties have subtle differences, so switching to `textContent` unde
 
 All of the `wtf*` APIs are deprecated and will be removed in a future version.
 
-{@a webworker-apps}
-### Running Angular applications in platform-webworker
-
-The `@angular/platform-*` packages enable Angular to be run in different contexts. For examples,
-`@angular/platform-server` enables Angular to be run on the server, and `@angular/platform-browser`
-enables Angular to be run in a web browser.
-
-`@angular/platform-webworker` was introduced in Angular version 2 as an experiment in leveraging
-Angular's rendering architecture to run an entire web application in a
-[web worker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API). We've learned a lot
-from this experiment and have come to the conclusion that running the entire application in a web
-worker is not the best strategy for most applications.
-
-Going forward, we will focus our efforts related to web workers around their primary use case of
-offloading CPU-intensive, non-critical work needed for initial rendering (such as in-memory search
-and image processing). Learn more in the
-[guide to Using Web Workers with the Angular CLI](guide/web-worker).
-
-As of Angular version 8, all  `platform-webworker` APIs are deprecated.
-This includes both packages: `@angular/platform-webworker` and
-`@angular/platform-webworker-dynamic`.
-
 {@a entryComponents}
 ### `entryComponents` and `ANALYZE_FOR_ENTRY_COMPONENTS` no longer required
 Previously, the `entryComponents` array in the `NgModule` definition was used to tell the compiler which components would be created and inserted dynamically. With Ivy, this isn't a requirement anymore and the `entryComponents` array can be removed from existing module declarations. The same applies to the `ANALYZE_FOR_ENTRY_COMPONENTS` injection token.
diff --git a/aio/tools/transforms/authors-package/api-package.js b/aio/tools/transforms/authors-package/api-package.js
index 77698753c0..d8d34a2412 100644
--- a/aio/tools/transforms/authors-package/api-package.js
+++ b/aio/tools/transforms/authors-package/api-package.js
@@ -20,8 +20,6 @@ const packageMap = {
   'platform-browser': ['platform-browser/index.ts', 'platform-browser/animations/index.ts', 'platform-browser/testing/index.ts'],
   'platform-browser-dynamic': ['platform-browser-dynamic/index.ts', 'platform-browser-dynamic/testing/index.ts'],
   'platform-server': ['platform-server/index.ts', 'platform-server/testing/index.ts'],
-  'platform-webworker': ['platform-webworker/index.ts'],
-  'platform-webworker-dynamic': ['platform-webworker-dynamic/index.ts'],
   router: ['router/index.ts', 'router/testing/index.ts', 'router/upgrade/index.ts'],
   'service-worker': ['service-worker/index.ts'],
   upgrade: ['upgrade/index.ts', 'upgrade/static/index.ts', 'upgrade/static/testing/index.ts']
diff --git a/docs/PUBLIC_API.md b/docs/PUBLIC_API.md
index dc592c3788..d4f96a44d0 100644
--- a/docs/PUBLIC_API.md
+++ b/docs/PUBLIC_API.md
@@ -10,8 +10,6 @@ Our semver, timed-release cycle and deprecation policy currently applies to thes
 - `@angular/platform-browser`
 - `@angular/platform-browser-dynamic`
 - `@angular/platform-server`
-- `@angular/platform-webworker`
-- `@angular/platform-webworker-dynamic`
 - `@angular/upgrade`
 - `@angular/router`
 - `@angular/service-worker`
@@ -79,10 +77,10 @@ INFO: From Testing //packages/core:core_api:
      ngModule: Type<T>;
      providers?: Provider[];
  }
- 
+
 -export declare type NgIterable<T> = Array<T> | Iterable<T>;
 +export declare type NgIterable<T> = Iterable<T>;
- 
+
  export declare interface NgModule {
      bootstrap?: Array<Type<any> | any[]>;
      declarations?: Array<Type<any> | any[]>;
diff --git a/integration/angular_integration_test.bzl b/integration/angular_integration_test.bzl
index b331062191..1335d42c47 100644
--- a/integration/angular_integration_test.bzl
+++ b/integration/angular_integration_test.bzl
@@ -50,8 +50,6 @@ GENERATED_NPM_PACKAGES = [
     "@angular/platform-browser",
     "@angular/platform-browser-dynamic",
     "@angular/platform-server",
-    "@angular/platform-webworker",
-    "@angular/platform-webworker-dynamic",
     "@angular/router",
     "@angular/service-worker",
     "@angular/upgrade",
diff --git a/integration/ng_update/package.json b/integration/ng_update/package.json
index a1f977c81b..5b85ef275f 100644
--- a/integration/ng_update/package.json
+++ b/integration/ng_update/package.json
@@ -17,8 +17,6 @@
     "@angular/platform-browser": "file:../../dist/packages-dist/platform-browser",
     "@angular/platform-browser-dynamic": "file:../../dist/packages-dist/platform-browser-dynamic",
     "@angular/platform-server": "file:../../dist/packages-dist/platform-server",
-    "@angular/platform-webworker": "file:../../dist/packages-dist/platform-webworker",
-    "@angular/platform-webworker-dynamic": "file:../../dist/packages-dist/platform-webworker-dynamic",
     "@angular/router": "file:../../dist/packages-dist/router",
     "@angular/service-worker": "file:../../dist/packages-dist/service-worker",
     "@angular/upgrade": "file:../../dist/packages-dist/upgrade",
diff --git a/integration/typings_test_ts39/include-all.ts b/integration/typings_test_ts39/include-all.ts
index 81d94b0a01..7bf19f646c 100644
--- a/integration/typings_test_ts39/include-all.ts
+++ b/integration/typings_test_ts39/include-all.ts
@@ -28,8 +28,6 @@ import * as platformBrowserAnimations from '@angular/platform-browser/animations
 import * as platformBrowserTesting from '@angular/platform-browser/testing';
 import * as platformServer from '@angular/platform-server';
 import * as platformServerTesting from '@angular/platform-server/testing';
-import * as platformWebworker from '@angular/platform-webworker';
-import * as platformWebworkerDynamic from '@angular/platform-webworker-dynamic';
 import * as router from '@angular/router';
 import * as routerTesting from '@angular/router/testing';
 import * as routerUpgrade from '@angular/router/upgrade';
@@ -59,8 +57,6 @@ export default {
   platformBrowserAnimations,
   platformServer,
   platformServerTesting,
-  platformWebworker,
-  platformWebworkerDynamic,
   router,
   routerTesting,
   routerUpgrade,
diff --git a/integration/typings_test_ts39/package.json b/integration/typings_test_ts39/package.json
index c3d79ae043..b0e7847020 100644
--- a/integration/typings_test_ts39/package.json
+++ b/integration/typings_test_ts39/package.json
@@ -14,8 +14,6 @@
     "@angular/platform-browser": "file:../../dist/packages-dist/platform-browser",
     "@angular/platform-browser-dynamic": "file:../../dist/packages-dist/platform-browser-dynamic",
     "@angular/platform-server": "file:../../dist/packages-dist/platform-server",
-    "@angular/platform-webworker": "file:../../dist/packages-dist/platform-webworker",
-    "@angular/platform-webworker-dynamic": "file:../../dist/packages-dist/platform-webworker-dynamic",
     "@angular/router": "file:../../dist/packages-dist/router",
     "@angular/service-worker": "file:../../dist/packages-dist/service-worker",
     "@angular/upgrade": "file:../../dist/packages-dist/upgrade",
diff --git a/integration/typings_test_ts40/include-all.ts b/integration/typings_test_ts40/include-all.ts
index 81d94b0a01..7bf19f646c 100644
--- a/integration/typings_test_ts40/include-all.ts
+++ b/integration/typings_test_ts40/include-all.ts
@@ -28,8 +28,6 @@ import * as platformBrowserAnimations from '@angular/platform-browser/animations
 import * as platformBrowserTesting from '@angular/platform-browser/testing';
 import * as platformServer from '@angular/platform-server';
 import * as platformServerTesting from '@angular/platform-server/testing';
-import * as platformWebworker from '@angular/platform-webworker';
-import * as platformWebworkerDynamic from '@angular/platform-webworker-dynamic';
 import * as router from '@angular/router';
 import * as routerTesting from '@angular/router/testing';
 import * as routerUpgrade from '@angular/router/upgrade';
@@ -59,8 +57,6 @@ export default {
   platformBrowserAnimations,
   platformServer,
   platformServerTesting,
-  platformWebworker,
-  platformWebworkerDynamic,
   router,
   routerTesting,
   routerUpgrade,
diff --git a/integration/typings_test_ts40/package.json b/integration/typings_test_ts40/package.json
index c184501a81..30cf4c7664 100644
--- a/integration/typings_test_ts40/package.json
+++ b/integration/typings_test_ts40/package.json
@@ -14,8 +14,6 @@
     "@angular/platform-browser": "file:../../dist/packages-dist/platform-browser",
     "@angular/platform-browser-dynamic": "file:../../dist/packages-dist/platform-browser-dynamic",
     "@angular/platform-server": "file:../../dist/packages-dist/platform-server",
-    "@angular/platform-webworker": "file:../../dist/packages-dist/platform-webworker",
-    "@angular/platform-webworker-dynamic": "file:../../dist/packages-dist/platform-webworker-dynamic",
     "@angular/router": "file:../../dist/packages-dist/router",
     "@angular/service-worker": "file:../../dist/packages-dist/service-worker",
     "@angular/upgrade": "file:../../dist/packages-dist/upgrade",
diff --git a/modules/playground/e2e_test/web_workers/animations/BUILD.bazel b/modules/playground/e2e_test/web_workers/animations/BUILD.bazel
deleted file mode 100644
index 2bd6e176d7..0000000000
--- a/modules/playground/e2e_test/web_workers/animations/BUILD.bazel
+++ /dev/null
@@ -1,7 +0,0 @@
-load("//modules/playground/e2e_test:example_test.bzl", "example_test")
-
-example_test(
-    name = "animations",
-    srcs = glob(["**/*.ts"]),
-    server = "//modules/playground/src/web_workers/animations:devserver",
-)
diff --git a/modules/playground/e2e_test/web_workers/animations/animations_spec.ts b/modules/playground/e2e_test/web_workers/animations/animations_spec.ts
deleted file mode 100644
index e000861711..0000000000
--- a/modules/playground/e2e_test/web_workers/animations/animations_spec.ts
+++ /dev/null
@@ -1,79 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {browser, by, element, protractor} from 'protractor';
-
-import {verifyNoBrowserErrors} from '../../../../../dev-infra/benchmark/driver-utilities';
-
-
-// Disabled because with ViewEngine animations within webworkers is not supported.
-// See: https://github.com/angular/angular/issues/18610
-xdescribe('WebWorkers Animations', function() {
-  afterEach(() => {
-    verifyNoBrowserErrors();
-    browser.ignoreSynchronization = false;
-  });
-
-  const selector = 'animation-app';
-  const URL = 'all/playground/src/web_workers/animations/index.html';
-
-  it('should bootstrap', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-    const elem = element(by.css(selector + ' .box'));
-    expect(elem.getText()).toEqual('...');
-  });
-
-  it('should animate to open', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-    element(by.css(selector + ' button')).click();
-
-    const boxElm = element(by.css(selector + ' .box'));
-    browser.wait(() => boxElm.getSize().then(sizes => sizes['width'] > 750), 1000);
-  });
-
-  it('should cancel the animation midway and continue from where it left off', () => {
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-
-    const elem = element(by.css(selector + ' .box'));
-    const btn = element(by.css(selector + ' button'));
-    const getWidth = () => elem.getSize().then((sizes: any) => sizes['width']);
-
-    btn.click();
-
-    browser.sleep(250);
-
-    btn.click();
-
-    expect(getWidth()).toBeLessThan(600);
-
-    browser.sleep(500);
-
-    expect(getWidth()).toBeLessThan(50);
-  });
-
-  function waitForBootstrap() {
-    browser.wait(protractor.until.elementLocated(by.css(selector + ' .box')), 5000)
-        .then(() => {}, () => {
-          // jasmine will timeout if this gets called too many times
-          console.error('>> unexpected timeout -> browser.refresh()');
-          browser.refresh();
-          waitForBootstrap();
-        });
-  }
-});
diff --git a/modules/playground/e2e_test/web_workers/input/BUILD.bazel b/modules/playground/e2e_test/web_workers/input/BUILD.bazel
deleted file mode 100644
index ae90a5daa4..0000000000
--- a/modules/playground/e2e_test/web_workers/input/BUILD.bazel
+++ /dev/null
@@ -1,7 +0,0 @@
-load("//modules/playground/e2e_test:example_test.bzl", "example_test")
-
-example_test(
-    name = "input",
-    srcs = glob(["**/*.ts"]),
-    server = "//modules/playground/src/web_workers/input:devserver",
-)
diff --git a/modules/playground/e2e_test/web_workers/input/input_spec.ts b/modules/playground/e2e_test/web_workers/input/input_spec.ts
deleted file mode 100644
index 541baf99ad..0000000000
--- a/modules/playground/e2e_test/web_workers/input/input_spec.ts
+++ /dev/null
@@ -1,75 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {browser, by, element, ExpectedConditions, protractor} from 'protractor';
-
-import {verifyNoBrowserErrors} from '../../../../../dev-infra/benchmark/driver-utilities';
-
-describe('WebWorkers Input', function() {
-  afterEach(() => {
-    verifyNoBrowserErrors();
-    browser.ignoreSynchronization = false;
-  });
-  const selector = 'input-app';
-  const URL = '/';
-  const VALUE = 'test val';
-
-  it('should bootstrap', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-    const elem = element(by.css(selector + ' h2'));
-    expect(elem.getText()).toEqual('Input App');
-  });
-
-  it('should bind to input value', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-    const input = element(by.css(selector + ' input'));
-    input.sendKeys(VALUE);
-    const displayElem = element(by.css(selector + ' .input-val'));
-    const expectedVal = `Input val is ${VALUE}.`;
-    browser.wait(ExpectedConditions.textToBePresentInElement(displayElem, expectedVal), 5000);
-    expect(displayElem.getText()).toEqual(expectedVal);
-  });
-
-  it('should bind to textarea value', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-    const input = element(by.css(selector + ' textarea'));
-    input.sendKeys(VALUE);
-    const displayElem = element(by.css(selector + ' .textarea-val'));
-    const expectedVal = `Textarea val is ${VALUE}.`;
-    browser.wait(ExpectedConditions.textToBePresentInElement(displayElem, expectedVal), 5000);
-    expect(displayElem.getText()).toEqual(expectedVal);
-  });
-
-  function waitForBootstrap() {
-    browser.wait(protractor.until.elementLocated(by.css(selector + ' h2')), 5000)
-        .then(
-            () => {
-              const elem = element(by.css(selector + ' h2'));
-              browser.wait(
-                  protractor.ExpectedConditions.textToBePresentInElement(elem, 'Input App'), 5000);
-            },
-            () => {
-              // jasmine will timeout if this gets called too many times
-              console.error('>> unexpected timeout -> browser.refresh()');
-              browser.refresh();
-              waitForBootstrap();
-            });
-  }
-});
diff --git a/modules/playground/e2e_test/web_workers/kitchen_sink/BUILD.bazel b/modules/playground/e2e_test/web_workers/kitchen_sink/BUILD.bazel
deleted file mode 100644
index a764d7b479..0000000000
--- a/modules/playground/e2e_test/web_workers/kitchen_sink/BUILD.bazel
+++ /dev/null
@@ -1,7 +0,0 @@
-load("//modules/playground/e2e_test:example_test.bzl", "example_test")
-
-example_test(
-    name = "kitchen_sink",
-    srcs = glob(["**/*.ts"]),
-    server = "//modules/playground/src/web_workers/kitchen_sink:devserver",
-)
diff --git a/modules/playground/e2e_test/web_workers/kitchen_sink/kitchen_sink_spec.ts b/modules/playground/e2e_test/web_workers/kitchen_sink/kitchen_sink_spec.ts
deleted file mode 100644
index cb019f6697..0000000000
--- a/modules/playground/e2e_test/web_workers/kitchen_sink/kitchen_sink_spec.ts
+++ /dev/null
@@ -1,58 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {browser, by, element, ExpectedConditions, protractor} from 'protractor';
-
-import {verifyNoBrowserErrors} from '../../../../../dev-infra/benchmark/driver-utilities';
-
-describe('WebWorkers Kitchen Sink', function() {
-  afterEach(() => {
-    verifyNoBrowserErrors();
-    browser.ignoreSynchronization = false;
-  });
-  const selector = 'hello-app .greeting';
-  const URL = '/';
-
-  it('should greet', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    browser.wait(protractor.until.elementLocated(by.css(selector)), 15000);
-    const elem = element(by.css(selector));
-    browser.wait(ExpectedConditions.textToBePresentInElement(elem, 'hello world!'), 5000);
-    expect(elem.getText()).toEqual('hello world!');
-  });
-
-  it('should change greeting', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-    const changeButtonSelector = 'hello-app .changeButton';
-
-    browser.wait(protractor.until.elementLocated(by.css(changeButtonSelector)), 15000);
-    element(by.css(changeButtonSelector)).click();
-    const elem = element(by.css(selector));
-    browser.wait(ExpectedConditions.textToBePresentInElement(elem, 'howdy world!'), 5000);
-    expect(elem.getText()).toEqual('howdy world!');
-  });
-
-  it('should display correct key names', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-    browser.wait(protractor.until.elementLocated(by.css('.sample-area')), 15000);
-
-    const area = element.all(by.css('.sample-area')).first();
-    expect(area.getText()).toEqual('(none)');
-
-    area.sendKeys('u');
-    browser.wait(ExpectedConditions.textToBePresentInElement(area, 'U'), 5000);
-    expect(area.getText()).toEqual('U');
-  });
-});
diff --git a/modules/playground/e2e_test/web_workers/message_broker/BUILD.bazel b/modules/playground/e2e_test/web_workers/message_broker/BUILD.bazel
deleted file mode 100644
index 74b19d9060..0000000000
--- a/modules/playground/e2e_test/web_workers/message_broker/BUILD.bazel
+++ /dev/null
@@ -1,7 +0,0 @@
-load("//modules/playground/e2e_test:example_test.bzl", "example_test")
-
-example_test(
-    name = "message_broker",
-    srcs = glob(["**/*.ts"]),
-    server = "//modules/playground/src/web_workers/message_broker:devserver",
-)
diff --git a/modules/playground/e2e_test/web_workers/message_broker/message_broker_spec.ts b/modules/playground/e2e_test/web_workers/message_broker/message_broker_spec.ts
deleted file mode 100644
index 9ab6572208..0000000000
--- a/modules/playground/e2e_test/web_workers/message_broker/message_broker_spec.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {browser, by, element, ExpectedConditions, protractor} from 'protractor';
-
-import {verifyNoBrowserErrors} from '../../../../../dev-infra/benchmark/driver-utilities';
-
-const URL = '/';
-
-describe('MessageBroker', function() {
-  afterEach(() => {
-    verifyNoBrowserErrors();
-    browser.ignoreSynchronization = false;
-  });
-
-  it('should bootstrap', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-    waitForBootstrap();
-    expect(element(by.css('app h1')).getText()).toEqual('WebWorker MessageBroker Test');
-  });
-
-  it('should echo messages', () => {
-    const VALUE = 'Hi There';
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-    waitForBootstrap();
-
-    const input = element.all(by.css('#echo_input')).first();
-    input.sendKeys(VALUE);
-    element(by.css('#send_echo')).click();
-    const area = element(by.css('#echo_result'));
-    browser.wait(ExpectedConditions.textToBePresentInElement(area, VALUE), 5000);
-    expect(area.getText()).toEqual(VALUE);
-  });
-});
-
-function waitForBootstrap(): void {
-  browser.wait(protractor.until.elementLocated(by.css('app h1')), 15000);
-}
diff --git a/modules/playground/e2e_test/web_workers/router/BUILD.bazel b/modules/playground/e2e_test/web_workers/router/BUILD.bazel
deleted file mode 100644
index e6c55fae25..0000000000
--- a/modules/playground/e2e_test/web_workers/router/BUILD.bazel
+++ /dev/null
@@ -1,7 +0,0 @@
-load("//modules/playground/e2e_test:example_test.bzl", "example_test")
-
-example_test(
-    name = "router",
-    srcs = glob(["**/*.ts"]),
-    server = "//modules/playground/src/web_workers/router:devserver",
-)
diff --git a/modules/playground/e2e_test/web_workers/router/router_spec.ts b/modules/playground/e2e_test/web_workers/router/router_spec.ts
deleted file mode 100644
index 01773e947f..0000000000
--- a/modules/playground/e2e_test/web_workers/router/router_spec.ts
+++ /dev/null
@@ -1,88 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {browser, by, element, protractor} from 'protractor';
-
-import {verifyNoBrowserErrors} from '../../../../../dev-infra/benchmark/driver-utilities';
-
-describe('WebWorker Router', () => {
-  beforeEach(() => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get('/');
-  });
-
-  afterEach(() => {
-    verifyNoBrowserErrors();
-    browser.ignoreSynchronization = false;
-  });
-
-  const contentSelector = 'app main h1';
-  const navSelector = 'app nav ul';
-  const baseUrl = '/';
-
-  it('should route on click', () => {
-    browser.get(baseUrl);
-
-    waitForElement(contentSelector);
-    let content = element(by.css(contentSelector));
-    expect(content.getText()).toEqual('Start');
-
-    const aboutBtn = element(by.css(navSelector + ' .about'));
-    aboutBtn.click();
-    waitForUrl(/\/about/);
-    waitForElement(contentSelector);
-    waitForElementText(contentSelector, 'About');
-    content = element(by.css(contentSelector));
-    expect(content.getText()).toEqual('About');
-    expect(browser.getCurrentUrl()).toMatch(/\/about/);
-
-    const contactBtn = element(by.css(navSelector + ' .contact'));
-    contactBtn.click();
-    waitForUrl(/\/contact/);
-    waitForElement(contentSelector);
-    waitForElementText(contentSelector, 'Contact');
-    content = element(by.css(contentSelector));
-    expect(content.getText()).toEqual('Contact');
-    expect(browser.getCurrentUrl()).toMatch(/\/contact/);
-  });
-
-  it('should load the correct route from the URL', () => {
-    browser.get(baseUrl + '#/about');
-
-    waitForElement(contentSelector);
-    waitForElementText(contentSelector, 'About');
-    const content = element(by.css(contentSelector));
-    expect(content.getText()).toEqual('About');
-  });
-
-  function waitForElement(selector: string): void {
-    browser.wait(protractor.until.elementLocated(by.css(selector)), 15000);
-  }
-
-  function waitForElementText(contentSelector: string, expected: string): void {
-    browser.wait(() => {
-      const deferred = protractor.promise.defer();
-      const elem = element(by.css(contentSelector));
-      elem.getText().then((text: string) => {
-        return deferred.fulfill(text === expected);
-      });
-      return deferred.promise;
-    }, 5000);
-  }
-
-  function waitForUrl(regex: RegExp): void {
-    browser.wait(() => {
-      const deferred = protractor.promise.defer();
-      browser.getCurrentUrl().then((url: string) => {
-        return deferred.fulfill(url.match(regex) !== null);
-      });
-      return deferred.promise;
-    }, 5000);
-  }
-});
diff --git a/modules/playground/e2e_test/web_workers/todo/BUILD.bazel b/modules/playground/e2e_test/web_workers/todo/BUILD.bazel
deleted file mode 100644
index 907933a699..0000000000
--- a/modules/playground/e2e_test/web_workers/todo/BUILD.bazel
+++ /dev/null
@@ -1,7 +0,0 @@
-load("//modules/playground/e2e_test:example_test.bzl", "example_test")
-
-example_test(
-    name = "todo",
-    srcs = glob(["**/*.ts"]),
-    server = "//modules/playground/src/web_workers/todo:devserver",
-)
diff --git a/modules/playground/e2e_test/web_workers/todo/todo_spec.ts b/modules/playground/e2e_test/web_workers/todo/todo_spec.ts
deleted file mode 100644
index d8caffdd36..0000000000
--- a/modules/playground/e2e_test/web_workers/todo/todo_spec.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {browser, by, element, protractor} from 'protractor';
-
-import {verifyNoBrowserErrors} from '../../../../../dev-infra/benchmark/driver-utilities';
-
-describe('WebWorkers Todo', function() {
-  afterEach(() => {
-    verifyNoBrowserErrors();
-    browser.ignoreSynchronization = false;
-  });
-
-  const URL = '/';
-
-  it('should bootstrap', () => {
-    // This test can't wait for Angular as Testability is not available when using WebWorker
-    browser.ignoreSynchronization = true;
-    browser.get(URL);
-
-    waitForBootstrap();
-    expect(element(by.css('#todoapp header')).getText()).toEqual('todos');
-  });
-});
-
-function waitForBootstrap(): void {
-  browser.wait(protractor.until.elementLocated(by.css('todo-app #todoapp')), 15000);
-}
diff --git a/modules/playground/src/web_workers/BUILD.bazel b/modules/playground/src/web_workers/BUILD.bazel
deleted file mode 100644
index 101d5649d7..0000000000
--- a/modules/playground/src/web_workers/BUILD.bazel
+++ /dev/null
@@ -1,13 +0,0 @@
-package(default_visibility = ["//visibility:public"])
-
-filegroup(
-    name = "worker-config",
-    srcs = ["worker-configure.js"],
-    data = [
-        "//modules/playground:systemjs-config.js",
-        "//modules/playground:systemjs-rxjs-operators.js",
-        "//packages/zone.js/bundles:zone.umd.js",
-        "@npm//reflect-metadata",
-        "@npm//systemjs",
-    ],
-)
diff --git a/modules/playground/src/web_workers/animations/BUILD.bazel b/modules/playground/src/web_workers/animations/BUILD.bazel
deleted file mode 100644
index 9b6cf7012e..0000000000
--- a/modules/playground/src/web_workers/animations/BUILD.bazel
+++ /dev/null
@@ -1,31 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "animations",
-    srcs = glob(["**/*.ts"]),
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/animations",
-        "//packages/core",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    entry_module = "angular/modules/playground/src/web_workers/animations/index",
-    port = 4200,
-    scripts = ["@npm//:node_modules/tslib/tslib.js"],
-    static_files = [
-        "loader.js",
-        "//modules/playground/src/web_workers:worker-config",
-        "@npm//:node_modules/rxjs/bundles/rxjs.umd.js",
-        "@npm//:node_modules/tslib/tslib.js",
-        "index.html",
-        "//packages/zone.js/bundles:zone.umd.js",
-    ],
-    deps = [":animations"],
-)
diff --git a/modules/playground/src/web_workers/animations/background_index.ts b/modules/playground/src/web_workers/animations/background_index.ts
deleted file mode 100644
index b73cc3ac27..0000000000
--- a/modules/playground/src/web_workers/animations/background_index.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {WorkerAppModule} from '@angular/platform-webworker';
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-
-import {AnimationCmp} from './index_common';
-
-@NgModule({imports: [WorkerAppModule], bootstrap: [AnimationCmp], declarations: [AnimationCmp]})
-export class ExampleModule {
-}
-
-platformWorkerAppDynamic().bootstrapModule(ExampleModule);
diff --git a/modules/playground/src/web_workers/animations/index.html b/modules/playground/src/web_workers/animations/index.html
deleted file mode 100644
index c4c0c25eb1..0000000000
--- a/modules/playground/src/web_workers/animations/index.html
+++ /dev/null
@@ -1,11 +0,0 @@
-<!doctype html>
-<html>
-  <title>WebWorker Animation Tests</title>
-  <style>
-  </style>
-<body>
-  <animation-app>
-    Loading...
-  </animation-app>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/animations/index.ts b/modules/playground/src/web_workers/animations/index.ts
deleted file mode 100644
index f3791aca91..0000000000
--- a/modules/playground/src/web_workers/animations/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {bootstrapWorkerUi} from '@angular/platform-webworker';
-
-bootstrapWorkerUi('loader.js');
diff --git a/modules/playground/src/web_workers/animations/index_common.ts b/modules/playground/src/web_workers/animations/index_common.ts
deleted file mode 100644
index d38fd32498..0000000000
--- a/modules/playground/src/web_workers/animations/index_common.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {animate, state, style, transition, trigger} from '@angular/animations';
-import {Component} from '@angular/core';
-
-@Component({
-  selector: 'animation-app',
-  styles: [`
-    .box {
-      border:10px solid black;
-      text-align:center;
-      overflow:hidden;
-      background:red;
-      color:white;
-      font-size:100px;
-      line-height:200px;
-    }
-  `],
-  animations: [trigger(
-      'animate',
-      [
-        state('off', style({width: '0px'})), state('on', style({width: '750px'})),
-        transition('off <=> on', animate(500))
-      ])],
-  template: `
-    <button (click)="animate=!animate">
-      Start Animation
-    </button>
-
-    <div class="box" [@animate]="animate ? 'on' : 'off'">
-      ...
-    </div>
-  `
-})
-export class AnimationCmp {
-  animate = false;
-}
diff --git a/modules/playground/src/web_workers/animations/loader.js b/modules/playground/src/web_workers/animations/loader.js
deleted file mode 100644
index 9dd1900c0b..0000000000
--- a/modules/playground/src/web_workers/animations/loader.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/images/BUILD.bazel b/modules/playground/src/web_workers/images/BUILD.bazel
deleted file mode 100644
index e55c51a651..0000000000
--- a/modules/playground/src/web_workers/images/BUILD.bazel
+++ /dev/null
@@ -1,41 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "images",
-    srcs = glob(["**/*.ts"]),
-    assets = ["image_demo.html"],
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/core",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-        "@npm//@types/base64-js",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    # Workaround for: https://github.com/bazelbuild/rules_typescript/issues/409
-    additional_root_paths = ["angular"],
-    bootstrap = [
-        "//packages/zone.js/bundles:zone.umd.js",
-        "@npm//:node_modules/jquery/dist/jquery.min.js",
-        "@npm//:node_modules/materialize-css/dist/js/materialize.min.js",
-    ],
-    entry_module = "angular/modules/playground/src/web_workers/images/index",
-    port = 4200,
-    scripts = ["@npm//:node_modules/tslib/tslib.js"],
-    static_files = [
-        "@npm//:node_modules/base64-js/base64js.min.js",
-        "@npm//:node_modules/rxjs/bundles/rxjs.umd.js",
-        "@npm//:node_modules/tslib/tslib.js",
-        "@npm//:node_modules/materialize-css/dist/css/materialize.min.css",
-        "loader.js",
-        "index.html",
-        "//modules/playground/src/web_workers:worker-config",
-        "//third_party/github.com/google/material-design-icons",
-    ] + glob(["**/*.css"]),
-    deps = [":images"],
-)
diff --git a/modules/playground/src/web_workers/images/background_index.ts b/modules/playground/src/web_workers/images/background_index.ts
deleted file mode 100644
index 5dc345cfb4..0000000000
--- a/modules/playground/src/web_workers/images/background_index.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {WorkerAppModule} from '@angular/platform-webworker';
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-
-import {ImageDemo} from './index_common';
-
-@NgModule({imports: [WorkerAppModule], bootstrap: [ImageDemo], declarations: [ImageDemo]})
-export class ExampleModule {
-}
-
-platformWorkerAppDynamic().bootstrapModule(ExampleModule);
diff --git a/modules/playground/src/web_workers/images/image_demo.css b/modules/playground/src/web_workers/images/image_demo.css
deleted file mode 100644
index bf19e97801..0000000000
--- a/modules/playground/src/web_workers/images/image_demo.css
+++ /dev/null
@@ -1,30 +0,0 @@
-.hidden{
-  display: none !important;
-}
-#images {
-  width: 600px;
-  margin: 0 auto;
-}
-ul li {
-  list-style-type: none;
-  float: left;
-  margin-left: 20px;
-  width: 200px;
-}
-#main ul {
-  width: 700px;
-}
-.card-image .image-loader{
-  position: absolute;
-  bottom: 0;
-  margin: auto;
-}
-
-.card-image img.grey {
-  opacity: 0.4;
-}
-
-.fixed-action-btn.bottom {
-  bottom: 45px;
-  right: 24px;
-}
diff --git a/modules/playground/src/web_workers/images/image_demo.html b/modules/playground/src/web_workers/images/image_demo.html
deleted file mode 100644
index e1ae692b98..0000000000
--- a/modules/playground/src/web_workers/images/image_demo.html
+++ /dev/null
@@ -1,36 +0,0 @@
-<nav class="blue">
-  <div class="container">
-    <div class="nav-wrapper">
-      <a class="brand-logo">Angular Image Demo</a>
-    </div>
-  </div>
-</nav>
-<section id="main" class="container">
-  <div class="row">
-    <div *ngFor="let image of images" class="col s12 m2">
-      <div class="card">
-        <div class="card-image">
-          <img [src]="image.src" [class.grey]="image.filtering"/>
-          <div class="image-loader progress" [class.hidden]="!image.filtering">
-            <div class="indeterminate"></div>
-          </div>
-        </div>
-      </div>
-    </div>
-  </div>
-  <div class="fixed-action-btn bottom" (click)="applyFilters()">
-    <a class="btn-floating btn-large blue darken-4" (click)="applyFilters()">
-      <i class="large material-icons" (click)="applyFilters()">invert_colors</i>
-    </a>
-  </div>
-
-  <div class="input-field file-field">
-    <div class="btn blue darken-2">
-      <span>Select Images</span>
-      <input type="file" accept="image/bmp" multiple (change)="uploadFiles($event.target.files)" />
-    </div>
-    <div class="file-path-wrapper">
-      <input class="file-path validate" type="text" placeholder="Upload one or more files">
-    </div>
-  </div>
-</section>
diff --git a/modules/playground/src/web_workers/images/index.html b/modules/playground/src/web_workers/images/index.html
deleted file mode 100644
index fde85836fa..0000000000
--- a/modules/playground/src/web_workers/images/index.html
+++ /dev/null
@@ -1,13 +0,0 @@
-<html>
-  <head>
-    <link rel="stylesheet" href="image_demo.css" />
-    <link rel="stylesheet" href="/npm/node_modules/materialize-css/dist/css/materialize.min.css">
-    <link rel="stylesheet" href="/third_party/github.com/google/material-design-icons/material-icons.css"></head>
-  </head>
-  <body>
-    <image-demo></image-demo>
-
-    <!--load location for ts_devserver-->
-    <script src="/app_bundle.js"></script>
-  </body>
-</html>
diff --git a/modules/playground/src/web_workers/images/index.ts b/modules/playground/src/web_workers/images/index.ts
deleted file mode 100644
index f3791aca91..0000000000
--- a/modules/playground/src/web_workers/images/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {bootstrapWorkerUi} from '@angular/platform-webworker';
-
-bootstrapWorkerUi('loader.js');
diff --git a/modules/playground/src/web_workers/images/index_common.ts b/modules/playground/src/web_workers/images/index_common.ts
deleted file mode 100644
index b17efba38b..0000000000
--- a/modules/playground/src/web_workers/images/index_common.ts
+++ /dev/null
@@ -1,56 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-
-import {BitmapService} from './services/bitmap';
-
-
-@Component({selector: 'image-demo', viewProviders: [BitmapService], templateUrl: 'image_demo.html'})
-export class ImageDemo {
-  images: {src: string, buffer: ArrayBuffer, filtering: boolean}[] = [];
-  fileInput: String;
-
-  constructor(private _bitmapService: BitmapService) {}
-
-  uploadFiles(files: FileList) {
-    for (let i = 0; i < files.length; i++) {
-      const reader = new FileReader();
-      reader.addEventListener('load', this.handleReaderLoad(reader));
-      reader.readAsArrayBuffer(files[i]);
-    }
-  }
-
-  handleReaderLoad(reader: FileReader): EventListener {
-    return (e) => {
-      const buffer = reader.result as ArrayBuffer;
-      this.images.push({
-        src: this._bitmapService.arrayBufferToDataUri(new Uint8Array(buffer)),
-        buffer: buffer,
-        filtering: false
-      });
-    };
-  }
-
-  applyFilters() {
-    for (let i = 0; i < this.images.length; i++) {
-      this.images[i].filtering = true;
-
-      setTimeout(this._filter(i), 0);
-    }
-  }
-
-  private _filter(i: number): () => void {
-    return () => {
-      let imageData = this._bitmapService.convertToImageData(this.images[i].buffer);
-      imageData = this._bitmapService.applySepia(imageData);
-      this.images[i].src = this._bitmapService.toDataUri(imageData);
-      this.images[i].filtering = false;
-    };
-  }
-}
diff --git a/modules/playground/src/web_workers/images/loader.css b/modules/playground/src/web_workers/images/loader.css
deleted file mode 100644
index 30e38fef8b..0000000000
--- a/modules/playground/src/web_workers/images/loader.css
+++ /dev/null
@@ -1,71 +0,0 @@
-body {
-  background: #eaecfa;
-}
-
-.loader {
-  width: 250px;
-  height: 50px;
-  line-height: 50px;
-  text-align: center;
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  -webkit-transform: translate(-50%, -50%);
-      -ms-transform: translate(-50%, -50%);
-          transform: translate(-50%, -50%);
-  font-family: helvetica, arial, sans-serif;
-  text-transform: uppercase;
-  font-weight: 900;
-  color: #ce4233;
-  letter-spacing: 0.2em;
-}
-.loader::before, .loader::after {
-  content: "";
-  display: block;
-  width: 15px;
-  height: 15px;
-  background: #ce4233;
-  position: absolute;
-  -webkit-animation: load .7s infinite alternate ease-in-out;
-          animation: load .7s infinite alternate ease-in-out;
-}
-.loader::before {
-  top: 0;
-}
-.loader::after {
-  bottom: 0;
-}
-
-@-webkit-keyframes load {
-  0% {
-    left: 0;
-    height: 30px;
-    width: 15px;
-  }
-  50% {
-    height: 8px;
-    width: 40px;
-  }
-  100% {
-    left: 235px;
-    height: 30px;
-    width: 15px;
-  }
-}
-
-@keyframes load {
-  0% {
-    left: 0;
-    height: 30px;
-    width: 15px;
-  }
-  50% {
-    height: 8px;
-    width: 40px;
-  }
-  100% {
-    left: 235px;
-    height: 30px;
-    width: 15px;
-  }
-}
diff --git a/modules/playground/src/web_workers/images/loader.js b/modules/playground/src/web_workers/images/loader.js
deleted file mode 100644
index dc68d1ea03..0000000000
--- a/modules/playground/src/web_workers/images/loader.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({
-  map: {
-    'base64-js': 'npm/node_modules/base64-js/base64js.min.js',
-  },
-  packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}
-});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/images/services/bitmap.ts b/modules/playground/src/web_workers/images/services/bitmap.ts
deleted file mode 100644
index 31c0897393..0000000000
--- a/modules/playground/src/web_workers/images/services/bitmap.ts
+++ /dev/null
@@ -1,179 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Injectable} from '@angular/core';
-import {fromByteArray} from 'base64-js';
-
-// This class is based on the Bitmap examples at:
-// http://www.i-programmer.info/projects/36-web/6234-reading-a-bmp-file-in-javascript.html
-// and http://www.worldwidewhat.net/2012/07/how-to-draw-bitmaps-using-javascript/
-@Injectable()
-export class BitmapService {
-  convertToImageData(buffer: ArrayBuffer): ImageData {
-    const bmp = this._getBMP(buffer);
-    return this._BMPToImageData(bmp);
-  }
-
-  applySepia(imageData: ImageData): ImageData {
-    const buffer = imageData.data;
-    for (let i = 0; i < buffer.length; i += 4) {
-      const r = buffer[i];
-      const g = buffer[i + 1];
-      const b = buffer[i + 2];
-      buffer[i] = (r * .393) + (g * .769) + (b * .189);
-      buffer[i + 1] = (r * .349) + (g * .686) + (b * .168);
-      buffer[i + 2] = (r * .272) + (g * .534) + (b * .131);
-    }
-    return imageData;
-  }
-
-  toDataUri(imageData: ImageData): string {
-    const header = this._createBMPHeader(imageData);
-    imageData = this._imageDataToBMP(imageData);
-    return 'data:image/bmp;base64,' + btoa(header) + fromByteArray(Uint8Array.from(imageData.data));
-  }
-
-  // converts a .bmp file ArrayBuffer to a dataURI
-  arrayBufferToDataUri(data: Uint8Array): string {
-    return 'data:image/bmp;base64,' + fromByteArray(data);
-  }
-
-  // returns a UInt8Array in BMP order (starting from the bottom)
-  private _imageDataToBMP(imageData: ImageData): ImageData {
-    const width = imageData.width;
-    const height = imageData.height;
-
-    const data = imageData.data;
-    for (let y = 0; y < height / 2; ++y) {
-      let topIndex = y * width * 4;
-      let bottomIndex = (height - y) * width * 4;
-      for (let i = 0; i < width * 4; i++) {
-        this._swap(data, topIndex, bottomIndex);
-        topIndex++;
-        bottomIndex++;
-      }
-    }
-
-    return imageData;
-  }
-
-  private _swap(data: Uint8Array|Uint8ClampedArray|number[], index1: number, index2: number) {
-    const temp = data[index1];
-    data[index1] = data[index2];
-    data[index2] = temp;
-  }
-
-  // Based on example from
-  // http://www.worldwidewhat.net/2012/07/how-to-draw-bitmaps-using-javascript/
-  private _createBMPHeader(imageData: ImageData): string {
-    const numFileBytes = this._getLittleEndianHex(imageData.width * imageData.height);
-    const w = this._getLittleEndianHex(imageData.width);
-    const h = this._getLittleEndianHex(imageData.height);
-    return 'BM' +             // Signature
-        numFileBytes +        // size of the file (bytes)*
-        '\x00\x00' +          // reserved
-        '\x00\x00' +          // reserved
-        '\x36\x00\x00\x00' +  // offset of where BMP data lives (54 bytes)
-        '\x28\x00\x00\x00' +  // number of remaining bytes in header from here (40 bytes)
-        w +                   // the width of the bitmap in pixels*
-        h +                   // the height of the bitmap in pixels*
-        '\x01\x00' +          // the number of color planes (1)
-        '\x20\x00' +          // 32 bits / pixel
-        '\x00\x00\x00\x00' +  // No compression (0)
-        '\x00\x00\x00\x00' +  // size of the BMP data (bytes)*
-        '\x13\x0B\x00\x00' +  // 2835 pixels/meter - horizontal resolution
-        '\x13\x0B\x00\x00' +  // 2835 pixels/meter - the vertical resolution
-        '\x00\x00\x00\x00' +  // Number of colors in the palette (keep 0 for 32-bit)
-        '\x00\x00\x00\x00';   // 0 important colors (means all colors are important)
-  }
-
-  private _BMPToImageData(bmp: BitmapFile): ImageData {
-    const width = bmp.infoHeader.biWidth;
-    const height = bmp.infoHeader.biHeight;
-    const imageData = new ImageData(width, height);
-
-    const data = imageData.data;
-    const bmpData = bmp.pixels;
-    const stride = bmp.stride;
-
-    for (let y = 0; y < height; ++y) {
-      for (let x = 0; x < width; ++x) {
-        const index1 = (x + width * (height - y)) * 4;
-        const index2 = x * 3 + stride * y;
-        data[index1] = bmpData[index2 + 2];
-        data[index1 + 1] = bmpData[index2 + 1];
-        data[index1 + 2] = bmpData[index2];
-        data[index1 + 3] = 255;
-      }
-    }
-    return imageData;
-  }
-
-  private _getBMP(buffer: ArrayBuffer): BitmapFile {
-    const datav = new DataView(buffer);
-    const bitmap: BitmapFile = {
-      fileHeader: {
-        bfType: datav.getUint16(0, true),
-        bfSize: datav.getUint32(2, true),
-        bfReserved1: datav.getUint16(6, true),
-        bfReserved2: datav.getUint16(8, true),
-        bfOffBits: datav.getUint32(10, true),
-      },
-      infoHeader: {
-        biSize: datav.getUint32(14, true),
-        biWidth: datav.getUint32(18, true),
-        biHeight: datav.getUint32(22, true),
-        biPlanes: datav.getUint16(26, true),
-        biBitCount: datav.getUint16(28, true),
-        biCompression: datav.getUint32(30, true),
-        biSizeImage: datav.getUint32(34, true),
-        biXPelsPerMeter: datav.getUint32(38, true),
-        biYPelsPerMeter: datav.getUint32(42, true),
-        biClrUsed: datav.getUint32(46, true),
-        biClrImportant: datav.getUint32(50, true)
-      },
-      stride: null,
-      pixels: null
-    };
-    const start = bitmap.fileHeader.bfOffBits;
-    bitmap.stride =
-        Math.floor((bitmap.infoHeader.biBitCount * bitmap.infoHeader.biWidth + 31) / 32) * 4;
-    bitmap.pixels = new Uint8Array(datav.buffer, start);
-    return bitmap;
-  }
-
-  // Based on example from
-  // http://www.worldwidewhat.net/2012/07/how-to-draw-bitmaps-using-javascript/
-  private _getLittleEndianHex(value: number): string {
-    const result: string[] = [];
-
-    for (let bytes = 4; bytes > 0; bytes--) {
-      result.push(String.fromCharCode(value & 255));
-      value >>= 8;
-    }
-
-    return result.join('');
-  }
-}
-
-interface BitmapFile {
-  fileHeader: {
-    bfType: number; bfSize: number; bfReserved1: number; bfReserved2: number; bfOffBits: number;
-  };
-  infoHeader: {
-    biSize: number; biWidth: number; biHeight: number; biPlanes: number; biBitCount: number;
-    biCompression: number;
-    biSizeImage: number;
-    biXPelsPerMeter: number;
-    biYPelsPerMeter: number;
-    biClrUsed: number;
-    biClrImportant: number
-  };
-  stride: number;
-  pixels: Uint8Array;
-}
diff --git a/modules/playground/src/web_workers/images/single_thread.html b/modules/playground/src/web_workers/images/single_thread.html
deleted file mode 100644
index ec3da632a5..0000000000
--- a/modules/playground/src/web_workers/images/single_thread.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<html>
-  <head>
-    <link href="angular/third_party/github.com/google/material-design-icons/material-icons.css"
-          rel="stylesheet">
-    <link rel="stylesheet" href="image_demo.css" />
-  </head>
-  <body>
-    <image-demo>
-    </image-demo>
-    <!-- Compiled and minified CSS -->
-    <link rel="stylesheet" href="angular/third_party/cdnjs.cloudflare.com/materialize/materialize.min.css">
-
-    <!-- Compiled and minified JavaScript -->
-    <script type="text/javascript" src="angular/third_party/code.jquery.com/jquery-2.1.1.min.js"></script>
-    <script src="angular/third_party/cdnjs.cloudflare.com/materialize/materialize.min.js"></script>
-  </body>
-</html>
diff --git a/modules/playground/src/web_workers/images/single_thread.ts b/modules/playground/src/web_workers/images/single_thread.ts
deleted file mode 100644
index 6891b04c1d..0000000000
--- a/modules/playground/src/web_workers/images/single_thread.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {BrowserModule} from '@angular/platform-browser';
-import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
-
-import {ImageDemo} from './index_common';
-
-@NgModule({bootstrap: [ImageDemo], imports: [BrowserModule]})
-class ExampleModule {
-}
-
-export function main() {
-  platformBrowserDynamic().bootstrapModule(ExampleModule);
-}
diff --git a/modules/playground/src/web_workers/input/BUILD.bazel b/modules/playground/src/web_workers/input/BUILD.bazel
deleted file mode 100644
index ab49918324..0000000000
--- a/modules/playground/src/web_workers/input/BUILD.bazel
+++ /dev/null
@@ -1,38 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "input",
-    srcs = glob(["**/*.ts"]),
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/core",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    bootstrap = [
-        "@npm//:node_modules/systemjs/dist/system.js",
-        "//packages/zone.js/bundles:zone.umd.js",
-        "//packages/zone.js/bundles:long-stack-trace-zone.umd.js",
-        "@npm//:node_modules/reflect-metadata/Reflect.js",
-    ],
-    entry_module = "angular/modules/playground/src/web_workers/input/index",
-    port = 4200,
-    scripts = [
-        "@npm//:node_modules/tslib/tslib.js",
-        "//tools/rxjs:rxjs_umd_modules",
-    ],
-    static_files = [
-        "index.html",
-        "loader.js",
-        "//modules/playground/src/web_workers:worker-config",
-        "//modules/playground:systemjs-config.js",
-        "//modules/playground:systemjs-rxjs-operators.js",
-    ],
-    deps = [":input"],
-)
diff --git a/modules/playground/src/web_workers/input/background_index.ts b/modules/playground/src/web_workers/input/background_index.ts
deleted file mode 100644
index 3e889dbd95..0000000000
--- a/modules/playground/src/web_workers/input/background_index.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {WorkerAppModule} from '@angular/platform-webworker';
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-
-import {InputCmp} from './index_common';
-
-@NgModule({imports: [WorkerAppModule], bootstrap: [InputCmp], declarations: [InputCmp]})
-export class ExampleModule {
-}
-
-platformWorkerAppDynamic().bootstrapModule(ExampleModule);
diff --git a/modules/playground/src/web_workers/input/index.html b/modules/playground/src/web_workers/input/index.html
deleted file mode 100644
index 7f026e4e32..0000000000
--- a/modules/playground/src/web_workers/input/index.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<!doctype html>
-<html>
-  <title>WebWorker Input Tests</title>
-  <style>
-  </style>
-<body>
-  <input-app>
-    Loading...
-  </input-app>
-
-  <!--load location for ts_devserver-->
-  <script src="/app_bundle.js"></script>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/input/index.ts b/modules/playground/src/web_workers/input/index.ts
deleted file mode 100644
index f3791aca91..0000000000
--- a/modules/playground/src/web_workers/input/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {bootstrapWorkerUi} from '@angular/platform-webworker';
-
-bootstrapWorkerUi('loader.js');
diff --git a/modules/playground/src/web_workers/input/index_common.ts b/modules/playground/src/web_workers/input/index_common.ts
deleted file mode 100644
index 8be97e9c18..0000000000
--- a/modules/playground/src/web_workers/input/index_common.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-
-@Component({
-  selector: 'input-app',
-  template: `
-    <h2>Input App</h2>
-    <div id="input-container">
-      <input type="text" (input)="inputChanged($event)">
-      <textarea (input)="textAreaChanged($event)"></textarea>
-      <div class="input-val">Input val is {{inputVal}}.</div>
-      <div class="textarea-val">Textarea val is {{textareaVal}}.</div>
-    </div>
-    <div id="ng-model-container">
-    </div>
-  `
-})
-export class InputCmp {
-  inputVal = '';
-  textareaVal = '';
-
-  inputChanged(e: Event) {
-    this.inputVal = (e.target as HTMLInputElement).value;
-  }
-
-  textAreaChanged(e: Event) {
-    this.textareaVal = (e.target as HTMLTextAreaElement).value;
-  }
-}
diff --git a/modules/playground/src/web_workers/input/loader.js b/modules/playground/src/web_workers/input/loader.js
deleted file mode 100644
index 9dd1900c0b..0000000000
--- a/modules/playground/src/web_workers/input/loader.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/kitchen_sink/BUILD.bazel b/modules/playground/src/web_workers/kitchen_sink/BUILD.bazel
deleted file mode 100644
index 686ef0468b..0000000000
--- a/modules/playground/src/web_workers/kitchen_sink/BUILD.bazel
+++ /dev/null
@@ -1,38 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "kitchen_sink",
-    srcs = glob(["**/*.ts"]),
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/core",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    bootstrap = [
-        "@npm//:node_modules/systemjs/dist/system.js",
-        "//packages/zone.js/bundles:zone.umd.js",
-        "//packages/zone.js/bundles:long-stack-trace-zone.umd.js",
-        "@npm//:node_modules/reflect-metadata/Reflect.js",
-    ],
-    entry_module = "angular/modules/playground/src/web_workers/kitchen_sink/index",
-    port = 4200,
-    scripts = [
-        "@npm//:node_modules/tslib/tslib.js",
-        "//tools/rxjs:rxjs_umd_modules",
-    ],
-    static_files = [
-        "index.html",
-        "loader.js",
-        "//modules/playground/src/web_workers:worker-config",
-        "//modules/playground:systemjs-config.js",
-        "//modules/playground:systemjs-rxjs-operators.js",
-    ],
-    deps = [":kitchen_sink"],
-)
diff --git a/modules/playground/src/web_workers/kitchen_sink/background_index.ts b/modules/playground/src/web_workers/kitchen_sink/background_index.ts
deleted file mode 100644
index dfea405834..0000000000
--- a/modules/playground/src/web_workers/kitchen_sink/background_index.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {WorkerAppModule} from '@angular/platform-webworker';
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-
-import {HelloCmp, RedDec} from './index_common';
-
-@NgModule({
-  imports: [WorkerAppModule],
-  bootstrap: [HelloCmp],
-  declarations: [HelloCmp, RedDec],
-})
-export class ExampleModule {
-}
-
-platformWorkerAppDynamic().bootstrapModule(ExampleModule);
diff --git a/modules/playground/src/web_workers/kitchen_sink/index.html b/modules/playground/src/web_workers/kitchen_sink/index.html
deleted file mode 100644
index 72a835e48a..0000000000
--- a/modules/playground/src/web_workers/kitchen_sink/index.html
+++ /dev/null
@@ -1,27 +0,0 @@
-<!doctype html>
-<html>
-  <title>Hello Angular</title>
-  <style>
-    .sample-area {
-      text-align: center;
-      margin: 5px;
-      height: 50px;
-      line-height: 50px;
-      border-radius: 5px;
-      border: 1px solid #d0d0d0;
-   }
-    .sample-area:focus {
-      border: 1px solid blue;
-      color: blue;
-      font-weight: bold;
-    }
-  </style>
-<body>
-  <hello-app>
-    Loading...
-  </hello-app>
-
-  <!--load location for ts_devserver-->
-  <script src="/app_bundle.js"></script>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/kitchen_sink/index.ts b/modules/playground/src/web_workers/kitchen_sink/index.ts
deleted file mode 100644
index f3791aca91..0000000000
--- a/modules/playground/src/web_workers/kitchen_sink/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {bootstrapWorkerUi} from '@angular/platform-webworker';
-
-bootstrapWorkerUi('loader.js');
diff --git a/modules/playground/src/web_workers/kitchen_sink/index_common.ts b/modules/playground/src/web_workers/kitchen_sink/index_common.ts
deleted file mode 100644
index 90939de9ba..0000000000
--- a/modules/playground/src/web_workers/kitchen_sink/index_common.ts
+++ /dev/null
@@ -1,63 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component, Directive, ElementRef, Injectable, Renderer2} from '@angular/core';
-
-// A service available to the Injector, used by the HelloCmp component.
-@Injectable()
-export class GreetingService {
-  greeting: string = 'hello';
-}
-
-// Directives are light-weight. They don't allow new
-// expression contexts (use @Component for those needs).
-@Directive({selector: '[red]'})
-export class RedDec {
-  // ElementRef is always injectable and it wraps the element on which the
-  // directive was found by the compiler.
-  constructor(el: ElementRef, renderer: Renderer2) {
-    renderer.setStyle(el.nativeElement, 'color', 'red');
-  }
-}
-
-// Angular supports 2 basic types of directives:
-// - Component - the basic building blocks of Angular apps. Backed by
-//   ShadowDom.(http://www.html5rocks.com/en/tutorials/webcomponents/shadowdom/)
-// - Directive - add behavior to existing elements.
-
-@Component({
-  // The Selector prop tells Angular on which elements to instantiate this
-  // class. The syntax supported is a basic subset of CSS selectors, for example
-  // 'element', '[attr]', [attr=foo]', etc.
-  selector: 'hello-app',
-  // These are services that would be created if a class in the component's
-  // template tries to inject them.
-  viewProviders: [GreetingService],
-  // The template for the component.
-  // Expressions in the template (like {{greeting}}) are evaluated in the
-  // context of the HelloCmp class below.
-  template: `<div class="greeting">{{greeting}} <span red>world</span>!</div>
-           <button class="changeButton" (click)="changeGreeting()">change greeting</button>
-           <div (keydown)="onKeyDown($event)" class="sample-area" tabindex="0">{{lastKey}}</div><br>`
-})
-export class HelloCmp {
-  greeting: string;
-  lastKey: string = '(none)';
-
-  constructor(service: GreetingService) {
-    this.greeting = service.greeting;
-  }
-
-  changeGreeting(): void {
-    this.greeting = 'howdy';
-  }
-
-  onKeyDown(event: KeyboardEvent): void {
-    this.lastKey = String.fromCharCode(event.keyCode);
-  }
-}
diff --git a/modules/playground/src/web_workers/kitchen_sink/loader.js b/modules/playground/src/web_workers/kitchen_sink/loader.js
deleted file mode 100644
index 9dd1900c0b..0000000000
--- a/modules/playground/src/web_workers/kitchen_sink/loader.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/message_broker/BUILD.bazel b/modules/playground/src/web_workers/message_broker/BUILD.bazel
deleted file mode 100644
index 9dd6417a30..0000000000
--- a/modules/playground/src/web_workers/message_broker/BUILD.bazel
+++ /dev/null
@@ -1,38 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "message_broker",
-    srcs = glob(["**/*.ts"]),
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/core",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    bootstrap = [
-        "@npm//:node_modules/systemjs/dist/system.js",
-        "//packages/zone.js/bundles:zone.umd.js",
-        "//packages/zone.js/bundles:long-stack-trace-zone.umd.js",
-        "@npm//:node_modules/reflect-metadata/Reflect.js",
-    ],
-    entry_module = "angular/modules/playground/src/web_workers/message_broker/index",
-    port = 4200,
-    scripts = [
-        "@npm//:node_modules/tslib/tslib.js",
-        "//tools/rxjs:rxjs_umd_modules",
-    ],
-    static_files = [
-        "index.html",
-        "loader.js",
-        "//modules/playground/src/web_workers:worker-config",
-        "//modules/playground:systemjs-config.js",
-        "//modules/playground:systemjs-rxjs-operators.js",
-    ],
-    deps = [":message_broker"],
-)
diff --git a/modules/playground/src/web_workers/message_broker/background_index.ts b/modules/playground/src/web_workers/message_broker/background_index.ts
deleted file mode 100644
index f9f8e033c7..0000000000
--- a/modules/playground/src/web_workers/message_broker/background_index.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {WorkerAppModule} from '@angular/platform-webworker';
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-
-import {App} from './index_common';
-
-@NgModule({imports: [WorkerAppModule], bootstrap: [App], declarations: [App]})
-export class ExampleModule {
-}
-
-platformWorkerAppDynamic().bootstrapModule(ExampleModule);
diff --git a/modules/playground/src/web_workers/message_broker/index.html b/modules/playground/src/web_workers/message_broker/index.html
deleted file mode 100644
index f1aab56501..0000000000
--- a/modules/playground/src/web_workers/message_broker/index.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<!doctype html>
-<html>
-  <title>Message Broker Example</title>
-<body>
-  <app></app>
-  <input type="text" id="echo_input" />
-  <button type="button" id="send_echo">Send Echo</button>
-  <p id="echo_result"></p>
-  <p id="ui_result"></p>
-
-  <!--load location for ts_devserver-->
-  <script src="/app_bundle.js"></script>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/message_broker/index.ts b/modules/playground/src/web_workers/message_broker/index.ts
deleted file mode 100644
index 592ff5bd77..0000000000
--- a/modules/playground/src/web_workers/message_broker/index.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {PlatformRef} from '@angular/core';
-import {bootstrapWorkerUi, ClientMessageBrokerFactory, FnArg, SerializerTypes, UiArguments} from '@angular/platform-webworker';
-
-const ECHO_CHANNEL = 'ECHO';
-
-function afterBootstrap(ref: PlatformRef) {
-  const brokerFactory: ClientMessageBrokerFactory = ref.injector.get(ClientMessageBrokerFactory);
-  const broker = brokerFactory.createMessageBroker(ECHO_CHANNEL, false);
-
-  document.getElementById('send_echo').addEventListener('click', (e) => {
-    const val = (<HTMLInputElement>document.getElementById('echo_input')).value;
-    // TODO(jteplitz602): Replace default constructors with real constructors
-    // once they're in the .d.ts file (#3926)
-    const fnArg = new FnArg(val);
-    const args = new UiArguments('echo', [fnArg]);
-
-    broker.runOnService(args, SerializerTypes.PRIMITIVE).then((echo_result: string) => {
-      document.getElementById('echo_result').innerHTML =
-          `<span class='response'>${echo_result}</span>`;
-    });
-  });
-}
-
-bootstrapWorkerUi('loader.js').then(afterBootstrap);
diff --git a/modules/playground/src/web_workers/message_broker/index_common.ts b/modules/playground/src/web_workers/message_broker/index_common.ts
deleted file mode 100644
index 193964bdba..0000000000
--- a/modules/playground/src/web_workers/message_broker/index_common.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-import {SerializerTypes, ServiceMessageBrokerFactory} from '@angular/platform-webworker';
-
-const ECHO_CHANNEL = 'ECHO';
-
-@Component({selector: 'app', template: '<h1>WebWorker MessageBroker Test</h1>'})
-export class App {
-  constructor(private _serviceBrokerFactory: ServiceMessageBrokerFactory) {
-    const broker = _serviceBrokerFactory.createMessageBroker(ECHO_CHANNEL, false);
-    broker.registerMethod(
-        'echo', [SerializerTypes.PRIMITIVE], this._echo, SerializerTypes.PRIMITIVE);
-  }
-
-  private _echo(val: string) {
-    return new Promise((res) => res(val));
-  }
-}
diff --git a/modules/playground/src/web_workers/message_broker/loader.js b/modules/playground/src/web_workers/message_broker/loader.js
deleted file mode 100644
index 9dd1900c0b..0000000000
--- a/modules/playground/src/web_workers/message_broker/loader.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/router/BUILD.bazel b/modules/playground/src/web_workers/router/BUILD.bazel
deleted file mode 100644
index e771007426..0000000000
--- a/modules/playground/src/web_workers/router/BUILD.bazel
+++ /dev/null
@@ -1,41 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "router",
-    srcs = glob(["**/*.ts"]),
-    assets = ["app.html"],
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/core",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-        "//packages/router",
-        "@npm//rxjs",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    bootstrap = [
-        "@npm//:node_modules/systemjs/dist/system.js",
-        "//packages/zone.js/bundles:zone.umd.js",
-        "//packages/zone.js/bundles:long-stack-trace-zone.umd.js",
-        "@npm//:node_modules/reflect-metadata/Reflect.js",
-    ],
-    entry_module = "angular/modules/playground/src/web_workers/router/index",
-    port = 4200,
-    scripts = [
-        "@npm//:node_modules/tslib/tslib.js",
-        "//tools/rxjs:rxjs_umd_modules",
-    ],
-    static_files = [
-        "index.html",
-        "loader.js",
-        "//modules/playground/src/web_workers:worker-config",
-        "//modules/playground:systemjs-config.js",
-        "//modules/playground:systemjs-rxjs-operators.js",
-    ],
-    deps = [":router"],
-)
diff --git a/modules/playground/src/web_workers/router/app.html b/modules/playground/src/web_workers/router/app.html
deleted file mode 100644
index d79243c194..0000000000
--- a/modules/playground/src/web_workers/router/app.html
+++ /dev/null
@@ -1,11 +0,0 @@
-<nav>
-	<ul>
-		<li class="start" routerLink="/">Start</li>
-		<li class="about" routerLink="/about">About</li>
-		<li class="contact" routerLink="/contact">Contact</li>
-	</ul>
-</nav>
-<main>
-	<router-outlet></router-outlet>
-</main>
-
diff --git a/modules/playground/src/web_workers/router/background_index.ts b/modules/playground/src/web_workers/router/background_index.ts
deleted file mode 100644
index d8240a05a1..0000000000
--- a/modules/playground/src/web_workers/router/background_index.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-import {AppModule} from './index_common';
-
-platformWorkerAppDynamic().bootstrapModule(AppModule);
diff --git a/modules/playground/src/web_workers/router/components/about.ts b/modules/playground/src/web_workers/router/components/about.ts
deleted file mode 100644
index 272a2404b2..0000000000
--- a/modules/playground/src/web_workers/router/components/about.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-@Component({selector: 'about', template: '<h1>About</h1>'})
-export class About {
-}
diff --git a/modules/playground/src/web_workers/router/components/contact.ts b/modules/playground/src/web_workers/router/components/contact.ts
deleted file mode 100644
index 46ba8e7cdc..0000000000
--- a/modules/playground/src/web_workers/router/components/contact.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-@Component({selector: 'contact', template: '<h1>Contact</h1>'})
-export class Contact {
-}
diff --git a/modules/playground/src/web_workers/router/components/start.ts b/modules/playground/src/web_workers/router/components/start.ts
deleted file mode 100644
index d80dab1618..0000000000
--- a/modules/playground/src/web_workers/router/components/start.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-@Component({selector: 'start', template: '<h1>Start</h1>'})
-export class Start {
-}
diff --git a/modules/playground/src/web_workers/router/index.html b/modules/playground/src/web_workers/router/index.html
deleted file mode 100644
index 90ce028dae..0000000000
--- a/modules/playground/src/web_workers/router/index.html
+++ /dev/null
@@ -1,10 +0,0 @@
-<!doctype html>
-<html>
-  <title>Web Worker Router Example</title>
-<body>
-  <app></app>
-
-  <!--load location for ts_devserver-->
-  <script src="/app_bundle.js"></script>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/router/index.ts b/modules/playground/src/web_workers/router/index.ts
deleted file mode 100644
index 72034f8c65..0000000000
--- a/modules/playground/src/web_workers/router/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {bootstrapWorkerUi, WORKER_UI_LOCATION_PROVIDERS} from '@angular/platform-webworker';
-
-bootstrapWorkerUi('loader.js', WORKER_UI_LOCATION_PROVIDERS);
diff --git a/modules/playground/src/web_workers/router/index_common.ts b/modules/playground/src/web_workers/router/index_common.ts
deleted file mode 100644
index 9aa0ce01c0..0000000000
--- a/modules/playground/src/web_workers/router/index_common.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component, NgModule} from '@angular/core';
-import {WORKER_APP_LOCATION_PROVIDERS, WorkerAppModule} from '@angular/platform-webworker';
-import {RouterModule} from '@angular/router';
-
-import {About} from './components/about';
-import {Contact} from './components/contact';
-import {Start} from './components/start';
-
-@Component({selector: 'app', templateUrl: 'app.html'})
-export class App {
-}
-
-export const ROUTES = [
-  {path: '', component: Start}, {path: 'contact', component: Contact},
-  {path: 'about', component: About}
-];
-
-@NgModule({
-  imports: [WorkerAppModule, RouterModule.forRoot(ROUTES, {useHash: true})],
-  providers: [
-    WORKER_APP_LOCATION_PROVIDERS,
-  ],
-  bootstrap: [App],
-  declarations: [App, Start, Contact, About]
-})
-export class AppModule {
-}
diff --git a/modules/playground/src/web_workers/router/loader.js b/modules/playground/src/web_workers/router/loader.js
deleted file mode 100644
index 9dd1900c0b..0000000000
--- a/modules/playground/src/web_workers/router/loader.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/todo/BUILD.bazel b/modules/playground/src/web_workers/todo/BUILD.bazel
deleted file mode 100644
index ab7d016886..0000000000
--- a/modules/playground/src/web_workers/todo/BUILD.bazel
+++ /dev/null
@@ -1,41 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ts_devserver")
-
-package(default_visibility = ["//modules/playground:__subpackages__"])
-
-ng_module(
-    name = "todo",
-    srcs = glob(["**/*.ts"]),
-    assets = ["todo.html"],
-    tsconfig = "//modules/playground:tsconfig-build.json",
-    deps = [
-        "//packages/core",
-        "//packages/forms",
-        "//packages/platform-webworker",
-        "//packages/platform-webworker-dynamic",
-    ],
-)
-
-ts_devserver(
-    name = "devserver",
-    bootstrap = [
-        "@npm//:node_modules/systemjs/dist/system.js",
-        "//packages/zone.js/bundles:zone.umd.js",
-        "//packages/zone.js/bundles:long-stack-trace-zone.umd.js",
-        "@npm//:node_modules/reflect-metadata/Reflect.js",
-    ],
-    entry_module = "angular/modules/playground/src/web_workers/todo/index",
-    port = 4200,
-    scripts = [
-        "@npm//:node_modules/tslib/tslib.js",
-        "//tools/rxjs:rxjs_umd_modules",
-    ],
-    static_files = [
-        "index.html",
-        "css/main.css",
-        "loader.js",
-        "//modules/playground/src/web_workers:worker-config",
-        "//modules/playground:systemjs-config.js",
-        "//modules/playground:systemjs-rxjs-operators.js",
-    ],
-    deps = [":todo"],
-)
diff --git a/modules/playground/src/web_workers/todo/background_index.ts b/modules/playground/src/web_workers/todo/background_index.ts
deleted file mode 100644
index f54e747f42..0000000000
--- a/modules/playground/src/web_workers/todo/background_index.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgModule} from '@angular/core';
-import {FormsModule} from '@angular/forms';
-import {WorkerAppModule} from '@angular/platform-webworker';
-import {platformWorkerAppDynamic} from '@angular/platform-webworker-dynamic';
-
-import {TodoApp} from './index_common';
-
-@NgModule({imports: [WorkerAppModule, FormsModule], bootstrap: [TodoApp], declarations: [TodoApp]})
-export class ExampleModule {
-}
-
-platformWorkerAppDynamic().bootstrapModule(ExampleModule);
diff --git a/modules/playground/src/web_workers/todo/css/bg.png b/modules/playground/src/web_workers/todo/css/bg.png
deleted file mode 100644
index b2a7600825..0000000000
Binary files a/modules/playground/src/web_workers/todo/css/bg.png and /dev/null differ
diff --git a/modules/playground/src/web_workers/todo/css/main.css b/modules/playground/src/web_workers/todo/css/main.css
deleted file mode 100644
index 2b3220292b..0000000000
--- a/modules/playground/src/web_workers/todo/css/main.css
+++ /dev/null
@@ -1,386 +0,0 @@
-@charset "utf-8";
-
-html,
-body {
-  margin: 0;
-  padding: 0;
-}
-
-body {
-  font: 14px 'Helvetica Neue', Helvetica, Arial, sans-serif;
-  line-height: 1.4em;
-  background: #eaeaea;
-  color: #4d4d4d;
-  width: 550px;
-  margin: 0 auto;
-}
-
-button {
-  margin: 0;
-  padding: 0;
-  border: 0;
-  background: none;
-  font-size: 100%;
-  vertical-align: baseline;
-  font-family: inherit;
-  font-weight: inherit;
-  color: inherit;
-  -webkit-appearance: none;
-  -ms-appearance: none;
-  appearance: none;
-}
-
-button,
-input[type="checkbox"] {
-  outline: none;
-}
-
-.hidden {
-  display: none;
-}
-
-.visible {
-  display: block !important;
-}
-
-#todoapp {
-  background: #fff;
-  margin: 130px 0 40px 0;
-  position: relative;
-  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2),
-  0 25px 50px 0 rgba(0, 0, 0, 0.1);
-}
-
-#todoapp input::-webkit-input-placeholder {
-  font-style: italic;
-  font-weight: 300;
-  color: #e6e6e6;
-}
-
-#todoapp input::-moz-placeholder {
-  font-style: italic;
-  font-weight: 300;
-  color: #e6e6e6;
-}
-
-#todoapp input::input-placeholder {
-  font-style: italic;
-  font-weight: 300;
-  color: #e6e6e6;
-}
-
-#todoapp h1 {
-  position: absolute;
-  top: -155px;
-  width: 100%;
-  font-size: 100px;
-  font-weight: 100;
-  text-align: center;
-  color: rgba(175, 47, 47, 0.15);
-  -webkit-text-rendering: optimizeLegibility;
-  -moz-text-rendering: optimizeLegibility;
-  -ms-text-rendering: optimizeLegibility;
-  text-rendering: optimizeLegibility;
-}
-
-#new-todo,
-.edit {
-  position: relative;
-  margin: 0;
-  width: 100%;
-  font-size: 24px;
-  font-family: inherit;
-  font-weight: inherit;
-  line-height: 1.4em;
-  border: 0;
-  outline: none;
-  color: inherit;
-  padding: 6px;
-  border: 1px solid #999;
-  box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
-  -ms-box-sizing: border-box;
-  box-sizing: border-box;
-}
-
-#new-todo {
-  padding: 16px 16px 16px 60px;
-  border: none;
-  background: rgba(0, 0, 0, 0.003);
-  box-shadow: inset 0 -2px 1px rgba(0,0,0,0.03);
-}
-
-#main {
-  position: relative;
-  z-index: 2;
-  border-top: 1px solid #e6e6e6;
-}
-
-label[for='toggle-all'] {
-  display: none;
-}
-
-#toggle-all {
-  position: absolute;
-  top: -55px;
-  left: -12px;
-  width: 60px;
-  height: 34px;
-  text-align: center;
-  border: none; /* Mobile Safari */
-}
-
-#toggle-all:before {
-  content: '❯';
-  font-size: 22px;
-  color: #e6e6e6;
-  padding: 10px 27px 10px 27px;
-}
-
-#toggle-all:checked:before {
-  color: #737373;
-}
-
-#todo-list {
-  margin: 0;
-  padding: 0;
-  list-style: none;
-}
-
-#todo-list li {
-  position: relative;
-  font-size: 24px;
-  border-bottom: 1px solid #ededed;
-}
-
-#todo-list li:last-child {
-  border-bottom: none;
-}
-
-#todo-list li.editing {
-  border-bottom: none;
-  padding: 0;
-}
-
-#todo-list li.editing .edit {
-  display: block;
-  width: 506px;
-  padding: 13px 17px 12px 17px;
-  margin: 0 0 0 43px;
-}
-
-#todo-list li.editing .view {
-  display: none;
-}
-
-#todo-list li .toggle {
-  text-align: center;
-  width: 40px;
-  /* auto, since non-WebKit browsers doesn't support input styling */
-  height: auto;
-  position: absolute;
-  top: 0;
-  bottom: 0;
-  margin: auto 0;
-  border: none; /* Mobile Safari */
-  -webkit-appearance: none;
-  -ms-appearance: none;
-  appearance: none;
-}
-
-#todo-list li .toggle:after {
-  content: url('data:image/svg+xml;charset=utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#ededed" stroke-width="3"/></svg>');
-}
-
-#todo-list li .toggle:checked:after {
-  content: url('data:image/svg+xml;charset=utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#bddad5" stroke-width="3"/><path fill="#5dc2af" d="M72 25L42 71 27 56l-4 4 20 20 34-52z"/></svg>');
-}
-
-#todo-list li label {
-  white-space: pre;
-  word-break: break-word;
-  padding: 15px 60px 15px 15px;
-  margin-left: 45px;
-  display: block;
-  line-height: 1.2;
-  transition: color 0.4s;
-}
-
-#todo-list li.completed label {
-  color: #d9d9d9;
-  text-decoration: line-through;
-}
-
-#todo-list li .destroy {
-  display: none;
-  position: absolute;
-  top: 0;
-  right: 10px;
-  bottom: 0;
-  width: 40px;
-  height: 40px;
-  margin: auto 0;
-  font-size: 30px;
-  color: #cc9a9a;
-  margin-bottom: 11px;
-  transition: color 0.2s ease-out;
-}
-
-#todo-list li .destroy:hover {
-  color: #af5b5e;
-}
-
-#todo-list li .destroy:after {
-  content: '×';
-}
-
-#todo-list li:hover .destroy {
-  display: block;
-}
-
-#todo-list li .edit {
-  display: none;
-}
-
-#todo-list li.editing:last-child {
-  margin-bottom: -1px;
-}
-
-#footer {
-  color: #777;
-  padding: 10px 15px;
-  height: 20px;
-  text-align: center;
-  border-top: 1px solid #e6e6e6;
-}
-
-#footer:before {
-  content: '';
-  position: absolute;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  height: 50px;
-  overflow: hidden;
-  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2),
-  0 8px 0 -3px #f6f6f6,
-  0 9px 1px -3px rgba(0, 0, 0, 0.2),
-  0 16px 0 -6px #f6f6f6,
-  0 17px 2px -6px rgba(0, 0, 0, 0.2);
-}
-
-#todo-count {
-  float: left;
-  text-align: left;
-}
-
-#todo-count strong {
-  font-weight: 300;
-}
-
-#filters {
-  margin: 0;
-  padding: 0;
-  list-style: none;
-  position: absolute;
-  right: 0;
-  left: 0;
-}
-
-#filters li {
-  display: inline;
-}
-
-#filters li a {
-  color: inherit;
-  margin: 3px;
-  padding: 3px 7px;
-  text-decoration: none;
-  border: 1px solid transparent;
-  border-radius: 3px;
-}
-
-#filters li a.selected,
-#filters li a:hover {
-  border-color: rgba(175, 47, 47, 0.1);
-}
-
-#filters li a.selected {
-  border-color: rgba(175, 47, 47, 0.2);
-}
-
-#clear-completed,
-html #clear-completed:active {
-  float: right;
-  position: relative;
-  line-height: 20px;
-  text-decoration: none;
-  cursor: pointer;
-  visibility: hidden;
-  position: relative;
-}
-
-#clear-completed::after {
-  visibility: visible;
-  content: 'Clear completed';
-  position: absolute;
-  right: 0;
-  white-space: nowrap;
-}
-
-#clear-completed:hover::after {
-  text-decoration: underline;
-}
-
-#info {
-  margin: 65px auto 0;
-  color: #bfbfbf;
-  font-size: 10px;
-  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
-  text-align: center;
-}
-
-#info p {
-  line-height: 1;
-}
-
-#info a {
-  color: inherit;
-  text-decoration: none;
-  font-weight: 400;
-}
-
-#info a:hover {
-  text-decoration: underline;
-}
-
-/*
-Hack to remove background from Mobile Safari.
-Can't use it globally since it destroys checkboxes in Firefox
-*/
-@media screen and (-webkit-min-device-pixel-ratio:0) {
-  #toggle-all,
-  #todo-list li .toggle {
-    background: none;
-  }
-
-  #todo-list li .toggle {
-    height: 40px;
-  }
-
-  #toggle-all {
-    -webkit-transform: rotate(90deg);
-    transform: rotate(90deg);
-    -webkit-appearance: none;
-    appearance: none;
-  }
-}
-
-@media (max-width: 430px) {
-  #footer {
-    height: 50px;
-  }
-
-  #filters {
-    bottom: 10px;
-  }
-}
diff --git a/modules/playground/src/web_workers/todo/index.html b/modules/playground/src/web_workers/todo/index.html
deleted file mode 100644
index 329bf4c6a0..0000000000
--- a/modules/playground/src/web_workers/todo/index.html
+++ /dev/null
@@ -1,13 +0,0 @@
-<!doctype html>
-<html>
-  <title>Todo Angular - WebWorker</title>
-  <link rel="stylesheet" href="css/main.css" media="screen" title="no title" charset="utf-8">
-<body>
-  <todo-app>
-    Loading...
-  </todo-app>
-
-  <!--load location for ts_devserver-->
-  <script src="/app_bundle.js"></script>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/todo/index.ts b/modules/playground/src/web_workers/todo/index.ts
deleted file mode 100644
index f3791aca91..0000000000
--- a/modules/playground/src/web_workers/todo/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {bootstrapWorkerUi} from '@angular/platform-webworker';
-
-bootstrapWorkerUi('loader.js');
diff --git a/modules/playground/src/web_workers/todo/index_common.ts b/modules/playground/src/web_workers/todo/index_common.ts
deleted file mode 100644
index 9630d45927..0000000000
--- a/modules/playground/src/web_workers/todo/index_common.ts
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Component} from '@angular/core';
-
-import {Store, Todo, TodoFactory} from './services/TodoStore';
-
-@Component({selector: 'todo-app', viewProviders: [Store, TodoFactory], templateUrl: 'todo.html'})
-export class TodoApp {
-  todoEdit: Todo = null;
-  inputValue: string;
-  hideActive: boolean = false;
-  hideCompleted: boolean = false;
-  isComplete: boolean = false;
-
-  constructor(public todoStore: Store<Todo>, public factory: TodoFactory) {}
-
-  enterTodo(): void {
-    this.addTodo(this.inputValue);
-    this.inputValue = '';
-  }
-
-  doneEditing($event: KeyboardEvent, todo: Todo): void {
-    const which = $event.keyCode;
-    if (which === 13) {
-      todo.title = todo.editTitle;
-      this.todoEdit = null;
-    } else if (which === 27) {
-      this.todoEdit = null;
-      todo.editTitle = todo.title;
-    }
-  }
-
-  editTodo(todo: Todo): void {
-    this.todoEdit = todo;
-  }
-
-  addTodo(newTitle: string): void {
-    this.todoStore.add(this.factory.create(newTitle, false));
-  }
-
-  completeMe(todo: Todo): void {
-    todo.completed = !todo.completed;
-  }
-
-  toggleCompleted(): void {
-    this.hideActive = !this.hideActive;
-    this.hideCompleted = false;
-  }
-
-  toggleActive(): void {
-    this.hideCompleted = !this.hideCompleted;
-    this.hideActive = false;
-  }
-
-  showAll(): void {
-    this.hideCompleted = false;
-    this.hideActive = false;
-  }
-
-  deleteMe(todo: Todo): void {
-    this.todoStore.remove(todo);
-  }
-
-  toggleAll($event: MouseEvent): void {
-    this.isComplete = !this.isComplete;
-    this.todoStore.list.forEach((todo: Todo) => {
-      todo.completed = this.isComplete;
-    });
-  }
-
-  clearCompleted(): void {
-    this.todoStore.removeBy((todo: Todo) => todo.completed);
-  }
-}
diff --git a/modules/playground/src/web_workers/todo/index_web_socket.html b/modules/playground/src/web_workers/todo/index_web_socket.html
deleted file mode 100644
index e4fac7623f..0000000000
--- a/modules/playground/src/web_workers/todo/index_web_socket.html
+++ /dev/null
@@ -1,10 +0,0 @@
-<!doctype html>
-<html>
-  <title>Todo Angular - WebWorker</title>
-  <link rel="stylesheet" href="css/main.css" media="screen" title="no title" charset="utf-8">
-<body>
-  <todo-app>
-    Loading...
-  </todo-app>
-</body>
-</html>
diff --git a/modules/playground/src/web_workers/todo/loader.js b/modules/playground/src/web_workers/todo/loader.js
deleted file mode 100644
index 9dd1900c0b..0000000000
--- a/modules/playground/src/web_workers/todo/loader.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('angular/modules/playground/src/web_workers/worker-configure.js');
-
-System.config({packages: {'angular/modules/playground/src/web_workers': {defaultExtension: 'js'}}});
-
-System.import('./background_index.js')
-    .catch(error => console.error('error loading background', error));
diff --git a/modules/playground/src/web_workers/todo/services/TodoStore.ts b/modules/playground/src/web_workers/todo/services/TodoStore.ts
deleted file mode 100644
index 34896ca7c8..0000000000
--- a/modules/playground/src/web_workers/todo/services/TodoStore.ts
+++ /dev/null
@@ -1,53 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Injectable} from '@angular/core';
-
-// base model for RecordStore
-export class KeyModel {
-  constructor(public key: number) {}
-}
-
-export class Todo extends KeyModel {
-  editTitle: string;
-  constructor(key: number, public title: string, public completed: boolean) {
-    super(key);
-    this.editTitle = title;
-  }
-}
-
-@Injectable()
-export class TodoFactory {
-  private _uid: number = 0;
-
-  nextUid(): number {
-    return ++this._uid;
-  }
-
-  create(title: string, isCompleted: boolean): Todo {
-    return new Todo(this.nextUid(), title, isCompleted);
-  }
-}
-
-// Store manages any generic item that inherits from KeyModel
-@Injectable()
-export class Store<T extends KeyModel> {
-  list: T[] = [];
-
-  add(record: T): void {
-    this.list.push(record);
-  }
-
-  remove(record: T): void {
-    this.removeBy((item) => item === record);
-  }
-
-  removeBy(callback: (record: T) => boolean): void {
-    this.list = this.list.filter((record) => !callback(record));
-  }
-}
diff --git a/modules/playground/src/web_workers/todo/todo.html b/modules/playground/src/web_workers/todo/todo.html
deleted file mode 100644
index d65042c440..0000000000
--- a/modules/playground/src/web_workers/todo/todo.html
+++ /dev/null
@@ -1,68 +0,0 @@
-<section id="todoapp">
-
-  <header id="header">
-    <h1>todos</h1>
-    <input
-      id="new-todo"
-      placeholder="What needs to be done?"
-      [(ngModel)]="inputValue"
-      autofocus
-      #newtodo
-      (keyup.enter)="enterTodo()">
-  </header>
-
-  <section id="main">
-    <input id="toggle-all" type="checkbox" [checked]="isComplete" (click)="toggleAll($event)">
-    <label for="toggle-all">Mark all as complete</label>
-
-    <ul id="todo-list">
-
-      <li *ngFor="let todo of todoStore.list" [class.hidden]="hideActive && !todo.completed || hideCompleted && todo.completed">
-        <div class="view"
-            [class.hidden]="todoEdit == todo">
-
-          <input class="toggle" type="checkbox"
-                 (click)="completeMe(todo)"
-                 [checked]="todo.completed">
-
-          <label (dblclick)="editTodo(todo)">{{todo.title}}</label>
-          <button class="destroy" (click)="deleteMe(todo)"></button>
-
-        </div>
-
-        <div>
-
-          <input class="edit"
-            [class.visible]="todoEdit == todo"
-            [(ngModel)]="todo.editTitle"
-            (keyup)="doneEditing($event, todo)">
-
-        </div>
-      </li>
-    </ul>
-
-  </section>
-
-  <footer id="footer">
-    <span id="todo-count"></span>
-    <div [class.hidden]="true"></div>
-    <ul id="filters">
-      <li>
-        <a href="#/" [class.selected]="!hideActive && !hideCompleted" (click)="showAll()">All</a>
-      </li>
-      <li>
-        <a href="#/active" [class.selected]="hideCompleted" (click)="toggleActive()">Active</a>
-      </li>
-      <li>
-        <a href="#/completed" [class.selected]="hideActive" (click)="toggleCompleted()">Completed</a>
-      </li>
-    </ul>
-    <button id="clear-completed" (click)="clearCompleted()">Clear completed</button>
-  </footer>
-
-</section>
-
-<footer id="info">
-  <p>Double-click to edit a todo</p>
-  <p>Created by <a href="http://twitter.com/angularjs">The Angular Team</a></p>
-</footer>
diff --git a/modules/playground/src/web_workers/worker-configure.js b/modules/playground/src/web_workers/worker-configure.js
deleted file mode 100644
index 8aba8ffcfa..0000000000
--- a/modules/playground/src/web_workers/worker-configure.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-importScripts('npm/node_modules/reflect-metadata/Reflect.js');
-importScripts('angular/packages/zone.js/bundles/zone.umd.js');
-importScripts('angular/packages/zone.js/bundles/long-stack-trace-zone.umd.js');
-importScripts('npm/node_modules/systemjs/dist/system.js');
-
-importScripts('angular/modules/playground/systemjs-config.js');
diff --git a/modules/playground/systemjs-config.js b/modules/playground/systemjs-config.js
index e30ed5878b..cc0f8b95b9 100644
--- a/modules/playground/systemjs-config.js
+++ b/modules/playground/systemjs-config.js
@@ -21,8 +21,6 @@ const angularPackages = [
   'http',
   'platform-browser',
   'platform-browser-dynamic',
-  'platform-webworker',
-  'platform-webworker-dynamic',
   'router',
   'upgrade',
   'upgrade/static',
diff --git a/packages/bazel/src/ng_package/ng_package.bzl b/packages/bazel/src/ng_package/ng_package.bzl
index 6619799dc5..a2d3cc4f8b 100644
--- a/packages/bazel/src/ng_package/ng_package.bzl
+++ b/packages/bazel/src/ng_package/ng_package.bzl
@@ -102,8 +102,6 @@ WELL_KNOWN_GLOBALS = {p: _global_name(p) for p in [
     "@angular/core",
     "@angular/platform-server/testing",
     "@angular/platform-server",
-    "@angular/platform-webworker-dynamic",
-    "@angular/platform-webworker",
     "@angular/common/testing",
     "@angular/common",
     "@angular/common/http/testing",
diff --git a/packages/circular-deps-test.conf.js b/packages/circular-deps-test.conf.js
index 0820b1907e..33fe4c7d4e 100644
--- a/packages/circular-deps-test.conf.js
+++ b/packages/circular-deps-test.conf.js
@@ -11,8 +11,7 @@ const path = require('path');
 module.exports = {
   baseDir: '../',
   goldenFile: '../goldens/circular-deps/packages.json',
-  // The test should not capture deprecated packages such as `http`, or the `webworker` platform.
-  glob: `./!(http|platform-webworker|platform-webworker-dynamic)/**/*.ts`,
+  glob: `./**/*.ts`,
   // Command that will be displayed if the golden needs to be updated.
   approveCommand: 'yarn ts-circular-deps:approve',
   resolveModule: resolveModule
diff --git a/packages/common/src/viewport_scroller.ts b/packages/common/src/viewport_scroller.ts
index a7c9093426..bbcf53ebbc 100644
--- a/packages/common/src/viewport_scroller.ts
+++ b/packages/common/src/viewport_scroller.ts
@@ -178,8 +178,7 @@ function getScrollRestorationProperty(obj: any): PropertyDescriptor|undefined {
 }
 
 /**
- * Provides an empty implementation of the viewport scroller. This will
- * live in @angular/common as it will be used by both platform-server and platform-webworker.
+ * Provides an empty implementation of the viewport scroller.
  */
 export class NullViewportScroller implements ViewportScroller {
   /**
diff --git a/packages/platform-webworker-dynamic/BUILD.bazel b/packages/platform-webworker-dynamic/BUILD.bazel
deleted file mode 100644
index 1103cdf08b..0000000000
--- a/packages/platform-webworker-dynamic/BUILD.bazel
+++ /dev/null
@@ -1,43 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ng_package", "ts_api_guardian_test_npm_package")
-
-package(default_visibility = ["//visibility:public"])
-
-ng_module(
-    name = "platform-webworker-dynamic",
-    srcs = glob(
-        [
-            "*.ts",
-            "src/**/*.ts",
-        ],
-    ),
-    deps = [
-        "//packages:types",
-        "//packages/common",
-        "//packages/compiler",
-        "//packages/core",
-        "//packages/platform-browser-dynamic",
-    ],
-)
-
-ng_package(
-    name = "npm_package",
-    srcs = ["package.json"],
-    entry_point = ":index.ts",
-    tags = [
-        "release-with-framework",
-    ],
-    # Do not add more to this list.
-    # Dependencies on the full npm_package cause long re-builds.
-    visibility = ["//integration:__pkg__"],
-    deps = [":platform-webworker-dynamic"],
-)
-
-ts_api_guardian_test_npm_package(
-    name = "platform-webworker-dynamic_api",
-    actualDir = "angular/packages/platform-webworker-dynamic/npm_package",
-    data = [
-        ":npm_package",
-        "//goldens:public-api",
-    ],
-    goldenDir = "angular/goldens/public-api/platform-webworker-dynamic",
-)
diff --git a/packages/platform-webworker-dynamic/index.ts b/packages/platform-webworker-dynamic/index.ts
deleted file mode 100644
index 7ef6571cd5..0000000000
--- a/packages/platform-webworker-dynamic/index.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-// This file is not used to build this module. It is only used during editing
-// by the TypeScript language service and during build for verification. `ngc`
-// replaces this file with production index.ts when it rewrites private symbol
-// names.
-
-export * from './public_api';
diff --git a/packages/platform-webworker-dynamic/package.json b/packages/platform-webworker-dynamic/package.json
deleted file mode 100644
index 5c7baced1a..0000000000
--- a/packages/platform-webworker-dynamic/package.json
+++ /dev/null
@@ -1,29 +0,0 @@
-{
-  "name": "@angular/platform-webworker-dynamic",
-  "version": "0.0.0-PLACEHOLDER",
-  "description": "Angular - library for using Angular in a web browser with web workers",
-  "author": "angular",
-  "license": "MIT",
-  "dependencies": {
-    "tslib": "^2.0.0"
-  },
-  "peerDependencies": {
-    "@angular/common": "0.0.0-PLACEHOLDER",
-    "@angular/core": "0.0.0-PLACEHOLDER",
-    "@angular/compiler": "0.0.0-PLACEHOLDER",
-    "@angular/platform-browser": "0.0.0-PLACEHOLDER",
-    "@angular/platform-webworker": "0.0.0-PLACEHOLDER"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/angular/angular.git",
-    "directory": "packages/platform-webworker-dynamic"
-  },
-  "ng-update": {
-    "packageGroup": "NG_UPDATE_PACKAGE_GROUP"
-  },
-  "sideEffects": false,
-  "publishConfig":{
-    "registry":"https://wombat-dressing-room.appspot.com"
-  }
-}
diff --git a/packages/platform-webworker-dynamic/public_api.ts b/packages/platform-webworker-dynamic/public_api.ts
deleted file mode 100644
index f6ddc07fc9..0000000000
--- a/packages/platform-webworker-dynamic/public_api.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * @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.io/license
- */
-
-/**
- * @module
- * @description
- * Entry point for all public APIs of this package.
- */
-export * from './src/platform-webworker-dynamic';
-// This file only reexports content of the `src` folder. Keep it that way.
diff --git a/packages/platform-webworker-dynamic/src/platform-webworker-dynamic.ts b/packages/platform-webworker-dynamic/src/platform-webworker-dynamic.ts
deleted file mode 100644
index f82a60f2b6..0000000000
--- a/packages/platform-webworker-dynamic/src/platform-webworker-dynamic.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {ɵPLATFORM_WORKER_UI_ID as PLATFORM_WORKER_UI_ID} from '@angular/common';
-import {ResourceLoader} from '@angular/compiler';
-import {COMPILER_OPTIONS, createPlatformFactory, PLATFORM_ID, PlatformRef, StaticProvider} from '@angular/core';
-import {ɵplatformCoreDynamic as platformCoreDynamic, ɵResourceLoaderImpl as ResourceLoaderImpl} from '@angular/platform-browser-dynamic';
-
-export {VERSION} from './version';
-
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const platformWorkerAppDynamic =
-    createPlatformFactory(platformCoreDynamic, 'workerAppDynamic', [
-      {
-        provide: COMPILER_OPTIONS,
-        useValue: {providers: [{provide: ResourceLoader, useClass: ResourceLoaderImpl, deps: []}]},
-        multi: true
-      },
-      {provide: PLATFORM_ID, useValue: PLATFORM_WORKER_UI_ID}
-    ]);
diff --git a/packages/platform-webworker-dynamic/src/version.ts b/packages/platform-webworker-dynamic/src/version.ts
deleted file mode 100644
index 59d0e9ac66..0000000000
--- a/packages/platform-webworker-dynamic/src/version.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-/**
- * @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.io/license
- */
-
-/**
- * @module
- * @description
- * Entry point for all public APIs of the common package.
- */
-
-import {Version} from '@angular/core';
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const VERSION = new Version('0.0.0-PLACEHOLDER');
diff --git a/packages/platform-webworker/BUILD.bazel b/packages/platform-webworker/BUILD.bazel
deleted file mode 100644
index 1237f7af7b..0000000000
--- a/packages/platform-webworker/BUILD.bazel
+++ /dev/null
@@ -1,49 +0,0 @@
-load("//tools:defaults.bzl", "ng_module", "ng_package", "ts_api_guardian_test_npm_package")
-
-package(default_visibility = ["//visibility:public"])
-
-ng_module(
-    name = "platform-webworker",
-    srcs = glob(
-        [
-            "*.ts",
-            "src/**/*.ts",
-        ],
-    ),
-    # Disable building with strict compatibility as the platform-webworker package is
-    # deprecated and therefore it is not needed to make it compatible with --strict.
-    tsconfig = "//packages:tsconfig-build-no-strict",
-    deps = [
-        "//packages:types",
-        "//packages/common",
-        "//packages/compiler",
-        "//packages/core",
-        "//packages/platform-browser",
-        "@npm//rxjs",
-    ],
-)
-
-ng_package(
-    name = "npm_package",
-    srcs = ["package.json"],
-    entry_point = ":index.ts",
-    tags = [
-        "release-with-framework",
-    ],
-    # Do not add more to this list.
-    # Dependencies on the full npm_package cause long re-builds.
-    visibility = ["//integration:__pkg__"],
-    deps = [
-        ":platform-webworker",
-    ],
-)
-
-ts_api_guardian_test_npm_package(
-    name = "platform-webworker_api",
-    actualDir = "angular/packages/platform-webworker/npm_package",
-    data = [
-        ":npm_package",
-        "//goldens:public-api",
-    ],
-    goldenDir = "angular/goldens/public-api/platform-webworker",
-)
diff --git a/packages/platform-webworker/PACKAGE.md b/packages/platform-webworker/PACKAGE.md
deleted file mode 100644
index 7d52fca357..0000000000
--- a/packages/platform-webworker/PACKAGE.md
+++ /dev/null
@@ -1,2 +0,0 @@
-**Deprecated** This package is deprecated and will be removed in a future version of Angular.
-See [Angular deprecations policy](guide/deprecations).
\ No newline at end of file
diff --git a/packages/platform-webworker/index.ts b/packages/platform-webworker/index.ts
deleted file mode 100644
index 7ef6571cd5..0000000000
--- a/packages/platform-webworker/index.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * @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.io/license
- */
-
-// This file is not used to build this module. It is only used during editing
-// by the TypeScript language service and during build for verification. `ngc`
-// replaces this file with production index.ts when it rewrites private symbol
-// names.
-
-export * from './public_api';
diff --git a/packages/platform-webworker/package.json b/packages/platform-webworker/package.json
deleted file mode 100644
index ac0cd34e20..0000000000
--- a/packages/platform-webworker/package.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "name": "@angular/platform-webworker",
-  "version": "0.0.0-PLACEHOLDER",
-  "description": "Angular - library for using Angular in a web browser with web workers",
-  "author": "angular",
-  "license": "MIT",
-  "dependencies": {
-    "tslib": "^2.0.0"
-  },
-  "peerDependencies": {
-    "@angular/common": "0.0.0-PLACEHOLDER",
-    "@angular/core": "0.0.0-PLACEHOLDER",
-    "@angular/platform-browser": "0.0.0-PLACEHOLDER"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/angular/angular.git",
-    "directory": "packages/platform-webworker"
-  },
-  "ng-update": {
-    "packageGroup": "NG_UPDATE_PACKAGE_GROUP"
-  },
-  "sideEffects": false,
-  "publishConfig":{
-    "registry":"https://wombat-dressing-room.appspot.com"
-  }
-}
diff --git a/packages/platform-webworker/public_api.ts b/packages/platform-webworker/public_api.ts
deleted file mode 100644
index 8146e52b46..0000000000
--- a/packages/platform-webworker/public_api.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * @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.io/license
- */
-
-/**
- * @module
- * @description
- * Entry point for all public APIs of this package.
- */
-export * from './src/platform-webworker';
-// This file only reexports content of the `src` folder. Keep it that way.
diff --git a/packages/platform-webworker/src/platform-webworker.ts b/packages/platform-webworker/src/platform-webworker.ts
deleted file mode 100644
index 9846e80d31..0000000000
--- a/packages/platform-webworker/src/platform-webworker.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {PlatformRef, StaticProvider} from '@angular/core';
-
-import {platformWorkerUi, WORKER_SCRIPT} from './worker_render';
-
-export {VERSION} from './version';
-export {ClientMessageBroker, ClientMessageBrokerFactory, FnArg, UiArguments} from './web_workers/shared/client_message_broker';
-export {MessageBus, MessageBusSink, MessageBusSource} from './web_workers/shared/message_bus';
-export {SerializerTypes} from './web_workers/shared/serializer';
-export {ReceivedMessage, ServiceMessageBroker, ServiceMessageBrokerFactory} from './web_workers/shared/service_message_broker';
-export {WORKER_UI_LOCATION_PROVIDERS} from './web_workers/ui/location_providers';
-export {WORKER_APP_LOCATION_PROVIDERS} from './web_workers/worker/location_providers';
-export {platformWorkerApp, WorkerAppModule} from './worker_app';
-export {platformWorkerUi} from './worker_render';
-
-/**
- * Bootstraps the worker ui.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export function bootstrapWorkerUi(
-    workerScriptUri: string, customProviders: StaticProvider[] = []): Promise<PlatformRef> {
-  // For now, just creates the worker ui platform...
-  const platform = platformWorkerUi([
-    {provide: WORKER_SCRIPT, useValue: workerScriptUri},
-    ...customProviders,
-  ]);
-
-  return Promise.resolve(platform);
-}
diff --git a/packages/platform-webworker/src/version.ts b/packages/platform-webworker/src/version.ts
deleted file mode 100644
index 59d0e9ac66..0000000000
--- a/packages/platform-webworker/src/version.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-/**
- * @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.io/license
- */
-
-/**
- * @module
- * @description
- * Entry point for all public APIs of the common package.
- */
-
-import {Version} from '@angular/core';
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const VERSION = new Version('0.0.0-PLACEHOLDER');
diff --git a/packages/platform-webworker/src/web_workers/shared/api.ts b/packages/platform-webworker/src/web_workers/shared/api.ts
deleted file mode 100644
index 5becf7e1ca..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/api.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {InjectionToken} from '@angular/core';
-
-export const ON_WEB_WORKER = new InjectionToken<boolean>('WebWorker.onWebWorker');
diff --git a/packages/platform-webworker/src/web_workers/shared/client_message_broker.ts b/packages/platform-webworker/src/web_workers/shared/client_message_broker.ts
deleted file mode 100644
index fdd321cda1..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/client_message_broker.ts
+++ /dev/null
@@ -1,166 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {EventEmitter, Injectable, Type, ɵstringify as stringify} from '@angular/core';
-import {MessageBus} from './message_bus';
-import {Serializer, SerializerTypes} from './serializer';
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-@Injectable()
-export class ClientMessageBrokerFactory {
-  /** @internal */
-  _serializer: Serializer;
-
-  /** @internal */
-  constructor(private _messageBus: MessageBus, _serializer: Serializer) {
-    this._serializer = _serializer;
-  }
-
-  /**
-   * Initializes the given channel and attaches a new {@link ClientMessageBroker} to it.
-   */
-  createMessageBroker(channel: string, runInZone: boolean = true): ClientMessageBroker {
-    this._messageBus.initChannel(channel, runInZone);
-    return new ClientMessageBroker(this._messageBus, this._serializer, channel);
-  }
-}
-
-interface PromiseCompleter {
-  resolve: (result: any) => void;
-  reject: (err: any) => void;
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export class ClientMessageBroker {
-  private _pending = new Map<string, PromiseCompleter>();
-  private _sink: EventEmitter<any>;
-  /** @internal */
-  public _serializer: Serializer;
-
-  /** @internal */
-  constructor(messageBus: MessageBus, _serializer: Serializer, private channel: any) {
-    this._sink = messageBus.to(channel);
-    this._serializer = _serializer;
-    const source = messageBus.from(channel);
-
-    source.subscribe({next: (message: ResponseMessageData) => this._handleMessage(message)});
-  }
-
-  private _generateMessageId(name: string): string {
-    const time: string = stringify(new Date().getTime());
-    let iteration: number = 0;
-    let id: string = name + time + stringify(iteration);
-    while (this._pending.has(id)) {
-      id = `${name}${time}${iteration}`;
-      iteration++;
-    }
-    return id;
-  }
-
-  runOnService(args: UiArguments, returnType: Type<any>|SerializerTypes|null): Promise<any>|null {
-    const fnArgs: any[] = [];
-    if (args.args) {
-      args.args.forEach(argument => {
-        if (argument.type != null) {
-          fnArgs.push(this._serializer.serialize(argument.value, argument.type));
-        } else {
-          fnArgs.push(argument.value);
-        }
-      });
-    }
-
-    let promise: Promise<any>|null;
-    let id: string|null = null;
-    if (returnType != null) {
-      let completer: PromiseCompleter = undefined!;
-      promise = new Promise((resolve, reject) => {
-        completer = {resolve, reject};
-      });
-      id = this._generateMessageId(args.method);
-      this._pending.set(id, completer);
-
-      promise.catch((err) => {
-        if (console && console.error) {
-          // tslint:disable-next-line:no-console
-          console.error(err);
-        }
-
-        completer.reject(err);
-      });
-
-      promise = promise.then(
-          (v: any) => this._serializer ? this._serializer.deserialize(v, returnType) : v);
-    } else {
-      promise = null;
-    }
-
-    const message: RequestMessageData = {
-      'method': args.method,
-      'args': fnArgs,
-    };
-    if (id != null) {
-      message['id'] = id;
-    }
-    this._sink.emit(message);
-
-    return promise;
-  }
-
-  private _handleMessage(message: ResponseMessageData): void {
-    if (message.type === 'result' || message.type === 'error') {
-      const id = message.id!;
-      if (this._pending.has(id)) {
-        if (message.type === 'result') {
-          this._pending.get(id)!.resolve(message.value);
-        } else {
-          this._pending.get(id)!.reject(message.value);
-        }
-        this._pending.delete(id);
-      }
-    }
-  }
-}
-
-interface RequestMessageData {
-  method: string;
-  args?: any[];
-  id?: string;
-}
-
-interface ResponseMessageData {
-  type: 'result'|'error';
-  value?: any;
-  id?: string;
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export class FnArg {
-  constructor(
-      public value: any, public type: Type<any>|SerializerTypes = SerializerTypes.PRIMITIVE) {}
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export class UiArguments {
-  constructor(public method: string, public args?: FnArg[]) {}
-}
diff --git a/packages/platform-webworker/src/web_workers/shared/message_bus.ts b/packages/platform-webworker/src/web_workers/shared/message_bus.ts
deleted file mode 100644
index 4b864cceac..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/message_bus.ts
+++ /dev/null
@@ -1,109 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {EventEmitter, NgZone} from '@angular/core';
-
-
-
-/**
- * Message Bus is a low level API used to communicate between the UI and the background.
- * Communication is based on a channel abstraction. Messages published in a
- * given channel to one MessageBusSink are received on the same channel
- * by the corresponding MessageBusSource.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export abstract class MessageBus implements MessageBusSource, MessageBusSink {
-  /**
-   * Sets up a new channel on the MessageBus.
-   * MUST be called before calling from or to on the channel.
-   * If runInZone is true then the source will emit events inside the angular zone
-   * and the sink will buffer messages and send only once the zone exits.
-   * if runInZone is false then the source will emit events inside the global zone
-   * and the sink will send messages immediately.
-   */
-  abstract initChannel(channel: string, runInZone?: boolean): void;
-
-  /**
-   * Assigns this bus to the given zone.
-   * Any callbacks attached to channels where runInZone was set to true on initialization
-   * will be executed in the given zone.
-   */
-  abstract attachToZone(zone: NgZone): void;
-
-  /**
-   * Returns an {@link EventEmitter} that emits every time a message
-   * is received on the given channel.
-   */
-  abstract from(channel: string): EventEmitter<any>;
-
-
-  /**
-   * Returns an {@link EventEmitter} for the given channel
-   * To publish methods to that channel just call next on the returned emitter
-   */
-  abstract to(channel: string): EventEmitter<any>;
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export interface MessageBusSource {
-  /**
-   * Sets up a new channel on the MessageBusSource.
-   * MUST be called before calling from on the channel.
-   * If runInZone is true then the source will emit events inside the angular zone.
-   * if runInZone is false then the source will emit events inside the global zone.
-   */
-  initChannel(channel: string, runInZone: boolean): void;
-
-  /**
-   * Assigns this source to the given zone.
-   * Any channels which are initialized with runInZone set to true will emit events that will be
-   * executed within the given zone.
-   */
-  attachToZone(zone: NgZone): void;
-
-  /**
-   * Returns an {@link EventEmitter} that emits every time a message
-   * is received on the given channel.
-   */
-  from(channel: string): EventEmitter<any>;
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export interface MessageBusSink {
-  /**
-   * Sets up a new channel on the MessageBusSink.
-   * MUST be called before calling to on the channel.
-   * If runInZone is true the sink will buffer messages and send only once the zone exits.
-   * if runInZone is false the sink will send messages immediately.
-   */
-  initChannel(channel: string, runInZone: boolean): void;
-
-  /**
-   * Assigns this sink to the given zone.
-   * Any channels which are initialized with runInZone set to true will wait for the given zone
-   * to exit before sending messages.
-   */
-  attachToZone(zone: NgZone): void;
-
-  /**
-   * Returns an {@link EventEmitter} for the given channel
-   * To publish methods to that channel just call next on the returned emitter
-   */
-  to(channel: string): EventEmitter<any>;
-}
diff --git a/packages/platform-webworker/src/web_workers/shared/messaging_api.ts b/packages/platform-webworker/src/web_workers/shared/messaging_api.ts
deleted file mode 100644
index 7449657fc9..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/messaging_api.ts
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * @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.io/license
- */
-
-/**
- * All channels used by angular's WebWorker components are listed here.
- * You should not use these channels in your application code.
- */
-export const RENDERER_2_CHANNEL = 'v2.ng-Renderer';
-export const EVENT_2_CHANNEL = 'v2.ng-Events';
-
-export const ROUTER_CHANNEL = 'ng-Router';
diff --git a/packages/platform-webworker/src/web_workers/shared/post_message_bus.ts b/packages/platform-webworker/src/web_workers/shared/post_message_bus.ts
deleted file mode 100644
index f8465db492..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/post_message_bus.ts
+++ /dev/null
@@ -1,169 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {EventEmitter, Injectable, NgZone} from '@angular/core';
-
-import {MessageBus, MessageBusSink, MessageBusSource} from './message_bus';
-
-
-
-// TODO(jteplitz602): Replace this with the definition in lib.webworker.d.ts(#3492)
-export interface PostMessageTarget {
-  postMessage: (message: any, transfer?: [Transferable]) => void;
-}
-
-export class PostMessageBusSink implements MessageBusSink {
-  // TODO(issue/24571): remove '!'.
-  private _zone!: NgZone;
-  private _channels: {[key: string]: _Channel} = {};
-  private _messageBuffer: Array<Object> = [];
-
-  constructor(private _postMessageTarget: PostMessageTarget) {}
-
-  attachToZone(zone: NgZone): void {
-    this._zone = zone;
-    this._zone.runOutsideAngular(() => {
-      this._zone.onStable.subscribe({
-        next: () => {
-          this._handleOnEventDone();
-        }
-      });
-    });
-  }
-
-  initChannel(channel: string, runInZone: boolean = true): void {
-    if (this._channels.hasOwnProperty(channel)) {
-      throw new Error(`${channel} has already been initialized`);
-    }
-
-    const emitter = new EventEmitter(false);
-    const channelInfo = new _Channel(emitter, runInZone);
-    this._channels[channel] = channelInfo;
-    emitter.subscribe((data: Object) => {
-      const message = {channel: channel, message: data};
-      if (runInZone) {
-        this._messageBuffer.push(message);
-      } else {
-        this._sendMessages([message]);
-      }
-    });
-  }
-
-  to(channel: string): EventEmitter<any> {
-    if (this._channels.hasOwnProperty(channel)) {
-      return this._channels[channel].emitter;
-    } else {
-      throw new Error(`${channel} is not set up. Did you forget to call initChannel?`);
-    }
-  }
-
-  private _handleOnEventDone() {
-    if (this._messageBuffer.length > 0) {
-      this._sendMessages(this._messageBuffer);
-      this._messageBuffer = [];
-    }
-  }
-
-  private _sendMessages(messages: Array<Object>) {
-    this._postMessageTarget.postMessage(messages);
-  }
-}
-
-export class PostMessageBusSource implements MessageBusSource {
-  // TODO(issue/24571): remove '!'.
-  private _zone!: NgZone;
-  private _channels: {[key: string]: _Channel} = {};
-
-  constructor(eventTarget?: EventTarget) {
-    if (eventTarget) {
-      eventTarget.addEventListener('message', (ev: MessageEvent) => this._handleMessages(ev));
-    } else {
-      // if no eventTarget is given we assume we're in a WebWorker and listen on the global scope
-      const workerScope = <EventTarget>self;
-      workerScope.addEventListener('message', (ev: MessageEvent) => this._handleMessages(ev));
-    }
-  }
-
-  attachToZone(zone: NgZone) {
-    this._zone = zone;
-  }
-
-  initChannel(channel: string, runInZone: boolean = true) {
-    if (this._channels.hasOwnProperty(channel)) {
-      throw new Error(`${channel} has already been initialized`);
-    }
-
-    const emitter = new EventEmitter(false);
-    const channelInfo = new _Channel(emitter, runInZone);
-    this._channels[channel] = channelInfo;
-  }
-
-  from(channel: string): EventEmitter<any> {
-    if (this._channels.hasOwnProperty(channel)) {
-      return this._channels[channel].emitter;
-    } else {
-      throw new Error(`${channel} is not set up. Did you forget to call initChannel?`);
-    }
-  }
-
-  private _handleMessages(ev: MessageEvent): void {
-    const messages = ev.data;
-    for (let i = 0; i < messages.length; i++) {
-      this._handleMessage(messages[i]);
-    }
-  }
-
-  private _handleMessage(data: any): void {
-    const channel = data.channel;
-    if (this._channels.hasOwnProperty(channel)) {
-      const channelInfo = this._channels[channel];
-      if (channelInfo.runInZone) {
-        this._zone.run(() => {
-          channelInfo.emitter.emit(data.message);
-        });
-      } else {
-        channelInfo.emitter.emit(data.message);
-      }
-    }
-  }
-}
-
-/**
- * A TypeScript implementation of {@link MessageBus} for communicating via JavaScript's
- * postMessage API.
- */
-@Injectable()
-export class PostMessageBus implements MessageBus {
-  constructor(public sink: PostMessageBusSink, public source: PostMessageBusSource) {}
-
-  attachToZone(zone: NgZone): void {
-    this.source.attachToZone(zone);
-    this.sink.attachToZone(zone);
-  }
-
-  initChannel(channel: string, runInZone: boolean = true): void {
-    this.source.initChannel(channel, runInZone);
-    this.sink.initChannel(channel, runInZone);
-  }
-
-  from(channel: string): EventEmitter<any> {
-    return this.source.from(channel);
-  }
-
-  to(channel: string): EventEmitter<any> {
-    return this.sink.to(channel);
-  }
-}
-
-/**
- * Helper class that wraps a channel's {@link EventEmitter} and
- * keeps track of if it should run in the zone.
- */
-class _Channel {
-  constructor(public emitter: EventEmitter<any>, public runInZone: boolean) {}
-}
diff --git a/packages/platform-webworker/src/web_workers/shared/render_store.ts b/packages/platform-webworker/src/web_workers/shared/render_store.ts
deleted file mode 100644
index b4d77105f5..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/render_store.ts
+++ /dev/null
@@ -1,42 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Injectable} from '@angular/core';
-
-@Injectable()
-export class RenderStore {
-  private _nextIndex = 0;
-  private _lookupById = new Map<number, any>();
-  private _lookupByObject = new Map<any, number>();
-
-  allocateId(): number {
-    return this._nextIndex++;
-  }
-
-  store(obj: any, id: number): void {
-    if (id == null) return;
-    this._lookupById.set(id, obj);
-    this._lookupByObject.set(obj, id);
-  }
-
-  remove(obj: any): void {
-    const index = this._lookupByObject.get(obj);
-    if (index != null) {
-      this._lookupByObject.delete(obj);
-      this._lookupById.delete(index);
-    }
-  }
-
-  deserialize(id: number): any {
-    return this._lookupById.has(id) ? this._lookupById.get(id) : null;
-  }
-
-  serialize(obj: any): number|null|undefined {
-    return obj == null ? null : this._lookupByObject.get(obj);
-  }
-}
diff --git a/packages/platform-webworker/src/web_workers/shared/serializer.ts b/packages/platform-webworker/src/web_workers/shared/serializer.ts
deleted file mode 100644
index d460db3266..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/serializer.ts
+++ /dev/null
@@ -1,114 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Injectable, RendererType2, Type, ɵstringify as stringify} from '@angular/core';
-import {RenderStore} from './render_store';
-
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const enum SerializerTypes {
-  // RendererType2
-  RENDERER_TYPE_2,
-  // Primitive types
-  PRIMITIVE,
-  // An object stored in a RenderStore
-  RENDER_STORE_OBJECT,
-}
-
-export class LocationType {
-  constructor(
-      public href: string, public protocol: string, public host: string, public hostname: string,
-      public port: string, public pathname: string|null, public search: string, public hash: string,
-      public origin: string) {}
-}
-
-@Injectable()
-export class Serializer {
-  constructor(private _renderStore: RenderStore) {}
-
-  serialize(obj: any, type: Type<any>|SerializerTypes = SerializerTypes.PRIMITIVE): Object {
-    if (obj == null || type === SerializerTypes.PRIMITIVE) {
-      return obj;
-    }
-    if (Array.isArray(obj)) {
-      return obj.map(v => this.serialize(v, type));
-    }
-    if (type === SerializerTypes.RENDER_STORE_OBJECT) {
-      return this._renderStore.serialize(obj)!;
-    }
-    if (type === SerializerTypes.RENDERER_TYPE_2) {
-      return this._serializeRendererType2(obj);
-    }
-    if (type === LocationType) {
-      return this._serializeLocation(obj);
-    }
-    throw new Error(`No serializer for type ${stringify(type)}`);
-  }
-
-  deserialize(map: any, type: Type<any>|SerializerTypes = SerializerTypes.PRIMITIVE, data?: any):
-      any {
-    if (map == null || type === SerializerTypes.PRIMITIVE) {
-      return map;
-    }
-    if (Array.isArray(map)) {
-      return map.map(val => this.deserialize(val, type, data));
-    }
-    if (type === SerializerTypes.RENDER_STORE_OBJECT) {
-      return this._renderStore.deserialize(map);
-    }
-    if (type === SerializerTypes.RENDERER_TYPE_2) {
-      return this._deserializeRendererType2(map);
-    }
-    if (type === LocationType) {
-      return this._deserializeLocation(map);
-    }
-    throw new Error(`No deserializer for type ${stringify(type)}`);
-  }
-
-  private _serializeLocation(loc: LocationType): Object {
-    return {
-      'href': loc.href,
-      'protocol': loc.protocol,
-      'host': loc.host,
-      'hostname': loc.hostname,
-      'port': loc.port,
-      'pathname': loc.pathname,
-      'search': loc.search,
-      'hash': loc.hash,
-      'origin': loc.origin,
-    };
-  }
-
-  private _deserializeLocation(loc: {[key: string]: any}): LocationType {
-    return new LocationType(
-        loc['href'], loc['protocol'], loc['host'], loc['hostname'], loc['port'], loc['pathname'],
-        loc['search'], loc['hash'], loc['origin']);
-  }
-
-  private _serializeRendererType2(type: RendererType2): {[key: string]: any} {
-    return {
-      'id': type.id,
-      'encapsulation': this.serialize(type.encapsulation),
-      'styles': this.serialize(type.styles),
-      'data': this.serialize(type.data),
-    };
-  }
-
-  private _deserializeRendererType2(props: {[key: string]: any}): RendererType2 {
-    return {
-      id: props['id'],
-      encapsulation: props['encapsulation'],
-      styles: this.deserialize(props['styles']),
-      data: this.deserialize(props['data'])
-    };
-  }
-}
diff --git a/packages/platform-webworker/src/web_workers/shared/service_message_broker.ts b/packages/platform-webworker/src/web_workers/shared/service_message_broker.ts
deleted file mode 100644
index 2eafcf4e07..0000000000
--- a/packages/platform-webworker/src/web_workers/shared/service_message_broker.ts
+++ /dev/null
@@ -1,106 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {EventEmitter, Injectable, Type} from '@angular/core';
-import {MessageBus} from '../shared/message_bus';
-import {Serializer, SerializerTypes} from '../shared/serializer';
-
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-@Injectable()
-export class ServiceMessageBrokerFactory {
-  /** @internal */
-  _serializer: Serializer;
-
-  /** @internal */
-  constructor(private _messageBus: MessageBus, _serializer: Serializer) {
-    this._serializer = _serializer;
-  }
-
-  /**
-   * Initializes the given channel and attaches a new {@link ServiceMessageBroker} to it.
-   */
-  createMessageBroker(channel: string, runInZone: boolean = true): ServiceMessageBroker {
-    this._messageBus.initChannel(channel, runInZone);
-    return new ServiceMessageBroker(this._messageBus, this._serializer, channel);
-  }
-}
-
-/**
- * Helper class for UIComponents that allows components to register methods.
- * If a registered method message is received from the broker on the worker,
- * the UIMessageBroker deserializes its arguments and calls the registered method.
- * If that method returns a promise, the UIMessageBroker returns the result to the worker.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export class ServiceMessageBroker {
-  private _sink: EventEmitter<any>;
-  private _methods = new Map<string, Function>();
-
-  /** @internal */
-  constructor(messageBus: MessageBus, private _serializer: Serializer, private channel: string) {
-    this._sink = messageBus.to(channel);
-    const source = messageBus.from(channel);
-    source.subscribe({next: (message: any) => this._handleMessage(message)});
-  }
-
-  registerMethod(
-      methodName: string, signature: Array<Type<any>|SerializerTypes>|null,
-      method: (..._: any[]) => Promise<any>| void, returnType?: Type<any>|SerializerTypes): void {
-    this._methods.set(methodName, (message: ReceivedMessage) => {
-      const serializedArgs = message.args;
-      const numArgs = signature ? signature.length : 0;
-      const deserializedArgs = [];
-      for (let i = 0; i < numArgs; i++) {
-        const serializedArg = serializedArgs[i];
-        deserializedArgs[i] = this._serializer.deserialize(serializedArg, signature![i]);
-      }
-
-      const promise = method(...deserializedArgs);
-      if (returnType && promise) {
-        this._wrapWebWorkerPromise(message.id, promise, returnType);
-      }
-    });
-  }
-
-  private _handleMessage(message: ReceivedMessage): void {
-    if (this._methods.has(message.method)) {
-      this._methods.get(message.method)!(message);
-    }
-  }
-
-  private _wrapWebWorkerPromise(id: string, promise: Promise<any>, type: Type<any>|SerializerTypes):
-      void {
-    promise.then((result: any) => {
-      this._sink.emit({
-        'type': 'result',
-        'value': this._serializer.serialize(result, type),
-        'id': id,
-      });
-    });
-  }
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export interface ReceivedMessage {
-  method: string;
-  args: any[];
-  id: string;
-  type: string;
-}
diff --git a/packages/platform-webworker/src/web_workers/ui/event_dispatcher.ts b/packages/platform-webworker/src/web_workers/ui/event_dispatcher.ts
deleted file mode 100644
index 7e68a8ae92..0000000000
--- a/packages/platform-webworker/src/web_workers/ui/event_dispatcher.ts
+++ /dev/null
@@ -1,120 +0,0 @@
-/**
- * @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.io/license
- */
-import {EventEmitter} from '@angular/core';
-import {Serializer, SerializerTypes} from '../shared/serializer';
-
-import {serializeEventWithTarget, serializeGenericEvent, serializeKeyboardEvent, serializeMouseEvent, serializeTransitionEvent} from './event_serializer';
-
-export class EventDispatcher {
-  constructor(private _sink: EventEmitter<any>, private _serializer: Serializer) {}
-
-  dispatchAnimationEvent(player: any, phaseName: string, element: any): boolean {
-    this._sink.emit({
-      'element': this._serializer.serialize(element, SerializerTypes.RENDER_STORE_OBJECT),
-      'animationPlayer': this._serializer.serialize(player, SerializerTypes.RENDER_STORE_OBJECT),
-      'phaseName': phaseName,
-    });
-    return true;
-  }
-
-  dispatchRenderEvent(element: any, eventTarget: string, eventName: string, event: any): boolean {
-    let serializedEvent: any;
-    // TODO (jteplitz602): support custom events #3350
-    switch (event.type) {
-      case 'click':
-      case 'mouseup':
-      case 'mousedown':
-      case 'dblclick':
-      case 'contextmenu':
-      case 'mouseenter':
-      case 'mouseleave':
-      case 'mousemove':
-      case 'mouseout':
-      case 'mouseover':
-      case 'show':
-        serializedEvent = serializeMouseEvent(event);
-        break;
-      case 'keydown':
-      case 'keypress':
-      case 'keyup':
-        serializedEvent = serializeKeyboardEvent(event);
-        break;
-      case 'input':
-      case 'change':
-      case 'blur':
-        serializedEvent = serializeEventWithTarget(event);
-        break;
-      case 'abort':
-      case 'afterprint':
-      case 'beforeprint':
-      case 'cached':
-      case 'canplay':
-      case 'canplaythrough':
-      case 'chargingchange':
-      case 'chargingtimechange':
-      case 'close':
-      case 'dischargingtimechange':
-      case 'DOMContentLoaded':
-      case 'downloading':
-      case 'durationchange':
-      case 'emptied':
-      case 'ended':
-      case 'error':
-      case 'fullscreenchange':
-      case 'fullscreenerror':
-      case 'invalid':
-      case 'languagechange':
-      case 'levelfchange':
-      case 'loadeddata':
-      case 'loadedmetadata':
-      case 'obsolete':
-      case 'offline':
-      case 'online':
-      case 'open':
-      case 'orientatoinchange':
-      case 'pause':
-      case 'pointerlockchange':
-      case 'pointerlockerror':
-      case 'play':
-      case 'playing':
-      case 'ratechange':
-      case 'readystatechange':
-      case 'reset':
-      case 'scroll':
-      case 'seeked':
-      case 'seeking':
-      case 'stalled':
-      case 'submit':
-      case 'success':
-      case 'suspend':
-      case 'timeupdate':
-      case 'updateready':
-      case 'visibilitychange':
-      case 'volumechange':
-      case 'waiting':
-        serializedEvent = serializeGenericEvent(event);
-        break;
-      case 'transitionend':
-        serializedEvent = serializeTransitionEvent(event);
-        break;
-      default:
-        throw new Error(eventName + ' not supported on WebWorkers');
-    }
-
-    this._sink.emit({
-      'element': this._serializer.serialize(element, SerializerTypes.RENDER_STORE_OBJECT),
-      'eventName': eventName,
-      'eventTarget': eventTarget,
-      'event': serializedEvent,
-    });
-
-    // TODO(kegluneq): Eventually, we want the user to indicate from the UI side whether the event
-    // should be canceled, but for now just call `preventDefault` on the original DOM event.
-    return false;
-  }
-}
diff --git a/packages/platform-webworker/src/web_workers/ui/event_serializer.ts b/packages/platform-webworker/src/web_workers/ui/event_serializer.ts
deleted file mode 100644
index 74bb03944d..0000000000
--- a/packages/platform-webworker/src/web_workers/ui/event_serializer.ts
+++ /dev/null
@@ -1,70 +0,0 @@
-/**
- * @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.io/license
- */
-
-const MOUSE_EVENT_PROPERTIES = [
-  'altKey', 'button', 'clientX', 'clientY', 'metaKey', 'movementX', 'movementY', 'offsetX',
-  'offsetY', 'region', 'screenX', 'screenY', 'shiftKey'
-];
-
-const KEYBOARD_EVENT_PROPERTIES = [
-  'altkey', 'charCode', 'code', 'ctrlKey', 'isComposing', 'key', 'keyCode', 'location', 'metaKey',
-  'repeat', 'shiftKey', 'which'
-];
-
-const TRANSITION_EVENT_PROPERTIES = ['propertyName', 'elapsedTime', 'pseudoElement'];
-
-const EVENT_PROPERTIES = ['type', 'bubbles', 'cancelable'];
-
-const NODES_WITH_VALUE = new Set(
-    ['input', 'select', 'option', 'button', 'li', 'meter', 'progress', 'param', 'textarea']);
-
-export function serializeGenericEvent(e: Event): {[key: string]: any} {
-  return serializeEvent(e, EVENT_PROPERTIES);
-}
-
-// TODO(jteplitz602): Allow users to specify the properties they need rather than always
-// adding value and files #3374
-export function serializeEventWithTarget(e: Event): {[key: string]: any} {
-  const serializedEvent = serializeEvent(e, EVENT_PROPERTIES);
-  return addTarget(e, serializedEvent);
-}
-
-export function serializeMouseEvent(e: MouseEvent): {[key: string]: any} {
-  return serializeEvent(e, MOUSE_EVENT_PROPERTIES);
-}
-
-export function serializeKeyboardEvent(e: KeyboardEvent): {[key: string]: any} {
-  const serializedEvent = serializeEvent(e, KEYBOARD_EVENT_PROPERTIES);
-  return addTarget(e, serializedEvent);
-}
-
-export function serializeTransitionEvent(e: TransitionEvent): {[key: string]: any} {
-  const serializedEvent = serializeEvent(e, TRANSITION_EVENT_PROPERTIES);
-  return addTarget(e, serializedEvent);
-}
-
-// TODO(jteplitz602): #3374. See above.
-function addTarget(e: Event, serializedEvent: {[key: string]: any}): {[key: string]: any} {
-  if (NODES_WITH_VALUE.has((<HTMLElement>e.target).tagName.toLowerCase())) {
-    const target = <HTMLInputElement>e.target;
-    serializedEvent['target'] = {'value': target.value};
-    if (target.files) {
-      serializedEvent['target']['files'] = target.files;
-    }
-  }
-  return serializedEvent;
-}
-
-function serializeEvent(e: any, properties: string[]): {[key: string]: any} {
-  const serialized: {[k: string]: any} = {};
-  for (let i = 0; i < properties.length; i++) {
-    const prop = properties[i];
-    serialized[prop] = e[prop];
-  }
-  return serialized;
-}
diff --git a/packages/platform-webworker/src/web_workers/ui/location_providers.ts b/packages/platform-webworker/src/web_workers/ui/location_providers.ts
deleted file mode 100644
index f3e41e1dd5..0000000000
--- a/packages/platform-webworker/src/web_workers/ui/location_providers.ts
+++ /dev/null
@@ -1,42 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {DOCUMENT, ɵBrowserPlatformLocation as BrowserPlatformLocation} from '@angular/common';
-import {Injector, NgZone, PLATFORM_INITIALIZER, StaticProvider} from '@angular/core';
-
-import {MessageBus} from '../shared/message_bus';
-import {Serializer} from '../shared/serializer';
-import {ServiceMessageBrokerFactory} from '../shared/service_message_broker';
-
-import {MessageBasedPlatformLocation} from './platform_location';
-
-
-
-/**
- * A list of {@link Provider}s. To use the router in a Worker enabled application you must
- * include these providers when setting up the render thread.
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const WORKER_UI_LOCATION_PROVIDERS = <StaticProvider[]>[
-  {
-    provide: MessageBasedPlatformLocation,
-    deps: [ServiceMessageBrokerFactory, BrowserPlatformLocation, MessageBus, Serializer]
-  },
-  {provide: BrowserPlatformLocation, deps: [DOCUMENT]},
-  {provide: PLATFORM_INITIALIZER, useFactory: initUiLocation, multi: true, deps: [Injector]}
-];
-
-function initUiLocation(injector: Injector): () => void {
-  return () => {
-    const zone = injector.get<NgZone>(NgZone);
-
-    zone.runGuarded(() => injector.get(MessageBasedPlatformLocation).start());
-  };
-}
diff --git a/packages/platform-webworker/src/web_workers/ui/platform_location.ts b/packages/platform-webworker/src/web_workers/ui/platform_location.ts
deleted file mode 100644
index 07d9eb6041..0000000000
--- a/packages/platform-webworker/src/web_workers/ui/platform_location.ts
+++ /dev/null
@@ -1,62 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {LocationChangeListener, ɵBrowserPlatformLocation as BrowserPlatformLocation} from '@angular/common';
-import {EventEmitter, Injectable} from '@angular/core';
-import {MessageBus} from '../shared/message_bus';
-import {ROUTER_CHANNEL} from '../shared/messaging_api';
-import {LocationType, Serializer, SerializerTypes} from '../shared/serializer';
-import {ServiceMessageBroker, ServiceMessageBrokerFactory} from '../shared/service_message_broker';
-
-@Injectable()
-export class MessageBasedPlatformLocation {
-  private _channelSink: EventEmitter<Object>;
-  private _broker: ServiceMessageBroker;
-
-  constructor(
-      private _brokerFactory: ServiceMessageBrokerFactory,
-      private _platformLocation: BrowserPlatformLocation, bus: MessageBus,
-      private _serializer: Serializer) {
-    this._platformLocation.onPopState(<LocationChangeListener>this._sendUrlChangeEvent.bind(this));
-    this._platformLocation.onHashChange(
-        <LocationChangeListener>this._sendUrlChangeEvent.bind(this));
-    this._broker = this._brokerFactory.createMessageBroker(ROUTER_CHANNEL);
-    this._channelSink = bus.to(ROUTER_CHANNEL);
-  }
-
-  start(): void {
-    const P = SerializerTypes.PRIMITIVE;
-
-    this._broker.registerMethod('getLocation', null, this._getLocation.bind(this), LocationType);
-    this._broker.registerMethod('setPathname', [P], this._setPathname.bind(this));
-    this._broker.registerMethod(
-        'pushState', [P, P, P], this._platformLocation.pushState.bind(this._platformLocation));
-    this._broker.registerMethod(
-        'replaceState', [P, P, P],
-        this._platformLocation.replaceState.bind(this._platformLocation));
-    this._broker.registerMethod(
-        'forward', null, this._platformLocation.forward.bind(this._platformLocation));
-    this._broker.registerMethod(
-        'back', null, this._platformLocation.back.bind(this._platformLocation));
-  }
-
-  private _getLocation(): Promise<Location> {
-    return Promise.resolve(this._platformLocation.location);
-  }
-
-  private _sendUrlChangeEvent(e: Event): void {
-    this._channelSink.emit({
-      'event': {'type': e.type},
-      'location': this._serializer.serialize(this._platformLocation.location, LocationType),
-    });
-  }
-
-  private _setPathname(pathname: string): void {
-    this._platformLocation.pathname = pathname;
-  }
-}
diff --git a/packages/platform-webworker/src/web_workers/ui/renderer.ts b/packages/platform-webworker/src/web_workers/ui/renderer.ts
deleted file mode 100644
index 9dd7870e05..0000000000
--- a/packages/platform-webworker/src/web_workers/ui/renderer.ts
+++ /dev/null
@@ -1,166 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Injectable, Renderer2, RendererFactory2, RendererStyleFlags2, RendererType2} from '@angular/core';
-
-import {MessageBus} from '../shared/message_bus';
-import {EVENT_2_CHANNEL, RENDERER_2_CHANNEL} from '../shared/messaging_api';
-import {RenderStore} from '../shared/render_store';
-import {Serializer, SerializerTypes} from '../shared/serializer';
-import {ServiceMessageBroker, ServiceMessageBrokerFactory} from '../shared/service_message_broker';
-import {EventDispatcher} from '../ui/event_dispatcher';
-
-@Injectable()
-export class MessageBasedRenderer2 {
-  // TODO(issue/24571): remove '!'.
-  private _eventDispatcher!: EventDispatcher;
-
-  constructor(
-      private _brokerFactory: ServiceMessageBrokerFactory, private _bus: MessageBus,
-      private _serializer: Serializer, private _renderStore: RenderStore,
-      private _rendererFactory: RendererFactory2) {}
-
-  start(): void {
-    const broker = this._brokerFactory.createMessageBroker(RENDERER_2_CHANNEL);
-
-    this._bus.initChannel(EVENT_2_CHANNEL);
-    this._eventDispatcher = new EventDispatcher(this._bus.to(EVENT_2_CHANNEL), this._serializer);
-
-    const [RSO, P, CRT] = [
-      SerializerTypes.RENDER_STORE_OBJECT,
-      SerializerTypes.PRIMITIVE,
-      SerializerTypes.RENDERER_TYPE_2,
-    ];
-
-    const methods: any[][] = [
-      ['createRenderer', this.createRenderer, RSO, CRT, P],
-      ['createElement', this.createElement, RSO, P, P, P],
-      ['createComment', this.createComment, RSO, P, P],
-      ['createText', this.createText, RSO, P, P],
-      ['appendChild', this.appendChild, RSO, RSO, RSO],
-      ['insertBefore', this.insertBefore, RSO, RSO, RSO, RSO],
-      ['removeChild', this.removeChild, RSO, RSO, RSO],
-      ['selectRootElement', this.selectRootElement, RSO, P, P],
-      ['parentNode', this.parentNode, RSO, RSO, P],
-      ['nextSibling', this.nextSibling, RSO, RSO, P],
-      ['setAttribute', this.setAttribute, RSO, RSO, P, P, P],
-      ['removeAttribute', this.removeAttribute, RSO, RSO, P, P],
-      ['addClass', this.addClass, RSO, RSO, P],
-      ['removeClass', this.removeClass, RSO, RSO, P],
-      ['setStyle', this.setStyle, RSO, RSO, P, P, P],
-      ['removeStyle', this.removeStyle, RSO, RSO, P, P],
-      ['setProperty', this.setProperty, RSO, RSO, P, P],
-      ['setValue', this.setValue, RSO, RSO, P],
-      ['listen', this.listen, RSO, RSO, P, P, P],
-      ['unlisten', this.unlisten, RSO, RSO],
-      ['destroy', this.destroy, RSO],
-      ['destroyNode', this.destroyNode, RSO, P]
-
-    ];
-
-    methods.forEach(([name, method, ...argTypes]: any[]) => {
-      broker.registerMethod(name, argTypes, method.bind(this));
-    });
-  }
-
-  private destroy(r: Renderer2) {
-    r.destroy();
-  }
-
-  private destroyNode(r: Renderer2, node: any) {
-    if (r.destroyNode) {
-      r.destroyNode(node);
-    }
-    this._renderStore.remove(node);
-  }
-
-  private createRenderer(el: any, type: RendererType2, id: number) {
-    this._renderStore.store(this._rendererFactory.createRenderer(el, type), id);
-  }
-
-  private createElement(r: Renderer2, name: string, namespace: string, id: number) {
-    this._renderStore.store(r.createElement(name, namespace), id);
-  }
-
-  private createComment(r: Renderer2, value: string, id: number) {
-    this._renderStore.store(r.createComment(value), id);
-  }
-
-  private createText(r: Renderer2, value: string, id: number) {
-    this._renderStore.store(r.createText(value), id);
-  }
-
-  private appendChild(r: Renderer2, parent: any, child: any) {
-    r.appendChild(parent, child);
-  }
-
-  private insertBefore(r: Renderer2, parent: any, child: any, ref: any) {
-    r.insertBefore(parent, child, ref);
-  }
-
-  private removeChild(r: Renderer2, parent: any, child: any) {
-    r.removeChild(parent, child);
-  }
-
-  private selectRootElement(r: Renderer2, selector: string, id: number) {
-    this._renderStore.store(r.selectRootElement(selector), id);
-  }
-
-  private parentNode(r: Renderer2, node: any, id: number) {
-    this._renderStore.store(r.parentNode(node), id);
-  }
-
-  private nextSibling(r: Renderer2, node: any, id: number) {
-    this._renderStore.store(r.nextSibling(node), id);
-  }
-
-  private setAttribute(r: Renderer2, el: any, name: string, value: string, namespace: string) {
-    r.setAttribute(el, name, value, namespace);
-  }
-
-  private removeAttribute(r: Renderer2, el: any, name: string, namespace: string) {
-    r.removeAttribute(el, name, namespace);
-  }
-
-  private addClass(r: Renderer2, el: any, name: string) {
-    r.addClass(el, name);
-  }
-
-  private removeClass(r: Renderer2, el: any, name: string) {
-    r.removeClass(el, name);
-  }
-
-  private setStyle(r: Renderer2, el: any, style: string, value: any, flags: RendererStyleFlags2) {
-    r.setStyle(el, style, value, flags);
-  }
-
-  private removeStyle(r: Renderer2, el: any, style: string, flags: RendererStyleFlags2) {
-    r.removeStyle(el, style, flags);
-  }
-
-  private setProperty(r: Renderer2, el: any, name: string, value: any) {
-    r.setProperty(el, name, value);
-  }
-
-  private setValue(r: Renderer2, node: any, value: string) {
-    r.setValue(node, value);
-  }
-
-  private listen(r: Renderer2, el: any, elName: string, eventName: string, unlistenId: number) {
-    const listener = (event: any) => {
-      return this._eventDispatcher.dispatchRenderEvent(el, elName, eventName, event);
-    };
-
-    const unlisten = r.listen(el || elName, eventName, listener);
-    this._renderStore.store(unlisten, unlistenId);
-  }
-
-  private unlisten(r: Renderer2, unlisten: () => boolean) {
-    unlisten();
-  }
-}
diff --git a/packages/platform-webworker/src/web_workers/worker/location_providers.ts b/packages/platform-webworker/src/web_workers/worker/location_providers.ts
deleted file mode 100644
index 0002fe067a..0000000000
--- a/packages/platform-webworker/src/web_workers/worker/location_providers.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {LOCATION_INITIALIZED, PlatformLocation} from '@angular/common';
-import {APP_INITIALIZER, NgZone, StaticProvider} from '@angular/core';
-
-import {WebWorkerPlatformLocation} from './platform_location';
-
-
-/**
- * The {@link PlatformLocation} providers that should be added when the {@link Location} is used in
- * a worker context.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const WORKER_APP_LOCATION_PROVIDERS: StaticProvider[] = [
-  {provide: PlatformLocation, useClass: WebWorkerPlatformLocation} as any as StaticProvider, {
-    provide: APP_INITIALIZER,
-    useFactory: appInitFnFactory,
-    multi: true,
-    deps: [PlatformLocation, NgZone]
-  },
-  {provide: LOCATION_INITIALIZED, useFactory: locationInitialized, deps: [PlatformLocation]}
-];
-
-export function locationInitialized(platformLocation: WebWorkerPlatformLocation) {
-  return platformLocation.initialized;
-}
-
-export function appInitFnFactory(platformLocation: WebWorkerPlatformLocation, zone: NgZone): () =>
-    Promise<boolean> {
-  return () => zone.runGuarded(() => platformLocation.init());
-}
diff --git a/packages/platform-webworker/src/web_workers/worker/platform_location.ts b/packages/platform-webworker/src/web_workers/worker/platform_location.ts
deleted file mode 100644
index 89ea3efcea..0000000000
--- a/packages/platform-webworker/src/web_workers/worker/platform_location.ts
+++ /dev/null
@@ -1,153 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {LocationChangeListener, PlatformLocation} from '@angular/common';
-import {EventEmitter, Injectable} from '@angular/core';
-import {ClientMessageBroker, ClientMessageBrokerFactory, FnArg, UiArguments} from '../shared/client_message_broker';
-import {MessageBus} from '../shared/message_bus';
-import {ROUTER_CHANNEL} from '../shared/messaging_api';
-import {LocationType, Serializer, SerializerTypes} from '../shared/serializer';
-
-@Injectable()
-export class WebWorkerPlatformLocation extends PlatformLocation {
-  private _broker: ClientMessageBroker;
-  private _popStateListeners: Array<Function> = [];
-  private _hashChangeListeners: Array<Function> = [];
-  private _location: LocationType = null!;
-  private _channelSource: EventEmitter<Object>;
-  public initialized: Promise<any>;
-  // TODO(issue/24571): remove '!'.
-  private initializedResolve!: () => void;
-
-  constructor(
-      brokerFactory: ClientMessageBrokerFactory, bus: MessageBus, private _serializer: Serializer) {
-    super();
-    this._broker = brokerFactory.createMessageBroker(ROUTER_CHANNEL);
-    this._channelSource = bus.from(ROUTER_CHANNEL);
-
-    this._channelSource.subscribe({
-      next: (msg: {[key: string]: any}) => {
-        let listeners: Array<Function>|null = null;
-        if (msg.hasOwnProperty('event')) {
-          const type: string = msg['event']['type'];
-          if (type === 'popstate') {
-            listeners = this._popStateListeners;
-          } else if (type === 'hashchange') {
-            listeners = this._hashChangeListeners;
-          }
-
-          if (listeners) {
-            // There was a popState or hashChange event, so the location object thas been updated
-            this._location = this._serializer.deserialize(msg['location'], LocationType);
-            listeners.forEach((fn: Function) => fn(msg['event']));
-          }
-        }
-      }
-    });
-    this.initialized = new Promise(res => this.initializedResolve = res);
-  }
-
-  /** @internal **/
-  init(): Promise<boolean> {
-    const args: UiArguments = new UiArguments('getLocation');
-
-    return this._broker.runOnService(args, LocationType)!.then(
-        (val: LocationType) => {
-          this._location = val;
-          this.initializedResolve();
-          return true;
-        },
-        err => {
-          throw new Error(err);
-        });
-  }
-
-  getBaseHrefFromDOM(): string {
-    throw new Error(
-        'Attempt to get base href from DOM from WebWorker. You must either provide a value for the APP_BASE_HREF token through DI or use the hash location strategy.');
-  }
-
-  onPopState(fn: LocationChangeListener): void {
-    this._popStateListeners.push(fn);
-  }
-
-  onHashChange(fn: LocationChangeListener): void {
-    this._hashChangeListeners.push(fn);
-  }
-
-  get href(): string {
-    return this._location ? this._location.href! : '<unknown>';
-  }
-
-  get hostname(): string {
-    return this._location ? this._location.host! : '<unknown>';
-  }
-
-  get port(): string {
-    return this._location ? this._location.port! : '<unknown>';
-  }
-
-  get protocol(): string {
-    return this._location ? this._location.protocol! : '<unknown>';
-  }
-
-  get search(): string {
-    return this._location ? this._location.search : '<unknown>';
-  }
-
-  get hash(): string {
-    return this._location ? this._location.hash : '<unknown>';
-  }
-
-  set pathname(newPath: string) {
-    if (this._location === null) {
-      throw new Error('Attempt to set pathname before value is obtained from UI');
-    }
-
-    this._location.pathname = newPath;
-
-    const fnArgs = [new FnArg(newPath, SerializerTypes.PRIMITIVE)];
-    const args = new UiArguments('setPathname', fnArgs);
-    this._broker.runOnService(args, null);
-  }
-
-  pushState(state: any, title: string, url: string): void {
-    const fnArgs = [
-      new FnArg(state, SerializerTypes.PRIMITIVE),
-      new FnArg(title, SerializerTypes.PRIMITIVE),
-      new FnArg(url, SerializerTypes.PRIMITIVE),
-    ];
-    const args = new UiArguments('pushState', fnArgs);
-    this._broker.runOnService(args, null);
-  }
-
-  replaceState(state: any, title: string, url: string): void {
-    const fnArgs = [
-      new FnArg(state, SerializerTypes.PRIMITIVE),
-      new FnArg(title, SerializerTypes.PRIMITIVE),
-      new FnArg(url, SerializerTypes.PRIMITIVE),
-    ];
-    const args = new UiArguments('replaceState', fnArgs);
-    this._broker.runOnService(args, null);
-  }
-
-  forward(): void {
-    const args = new UiArguments('forward');
-    this._broker.runOnService(args, null);
-  }
-
-  back(): void {
-    const args = new UiArguments('back');
-    this._broker.runOnService(args, null);
-  }
-
-  // History API isn't available on WebWorkers, therefore return undefined
-  getState(): unknown {
-    return undefined;
-  }
-}
diff --git a/packages/platform-webworker/src/web_workers/worker/renderer.ts b/packages/platform-webworker/src/web_workers/worker/renderer.ts
deleted file mode 100644
index e95ae57304..0000000000
--- a/packages/platform-webworker/src/web_workers/worker/renderer.ts
+++ /dev/null
@@ -1,327 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Injectable, Renderer2, RendererFactory2, RendererStyleFlags2, RendererType2} from '@angular/core';
-
-import {ClientMessageBroker, ClientMessageBrokerFactory, FnArg, UiArguments} from '../shared/client_message_broker';
-import {MessageBus} from '../shared/message_bus';
-import {EVENT_2_CHANNEL, RENDERER_2_CHANNEL} from '../shared/messaging_api';
-import {RenderStore} from '../shared/render_store';
-import {Serializer, SerializerTypes} from '../shared/serializer';
-
-export class NamedEventEmitter {
-  // TODO(issue/24571): remove '!'.
-  private _listeners!: Map<string, Function[]>;
-
-  listen(eventName: string, callback: Function) {
-    this._getListeners(eventName).push(callback);
-  }
-
-  unlisten(eventName: string, listener: Function) {
-    const listeners = this._getListeners(eventName);
-    const index = listeners.indexOf(listener);
-    if (index > -1) {
-      listeners.splice(index, 1);
-    }
-  }
-
-  dispatchEvent(eventName: string, event: any) {
-    const listeners = this._getListeners(eventName);
-    for (let i = 0; i < listeners.length; i++) {
-      listeners[i](event);
-    }
-  }
-
-  private _getListeners(eventName: string): Function[] {
-    if (!this._listeners) {
-      this._listeners = new Map<string, Function[]>();
-    }
-    let listeners = this._listeners.get(eventName);
-    if (!listeners) {
-      listeners = [];
-      this._listeners.set(eventName, listeners);
-    }
-    return listeners;
-  }
-}
-
-
-function eventNameWithTarget(target: string, eventName: string): string {
-  return `${target}:${eventName}`;
-}
-
-@Injectable()
-export class WebWorkerRendererFactory2 implements RendererFactory2 {
-  globalEvents = new NamedEventEmitter();
-
-  private _messageBroker: ClientMessageBroker;
-
-  constructor(
-      messageBrokerFactory: ClientMessageBrokerFactory, bus: MessageBus,
-      private _serializer: Serializer, public renderStore: RenderStore) {
-    this._messageBroker = messageBrokerFactory.createMessageBroker(RENDERER_2_CHANNEL);
-    bus.initChannel(EVENT_2_CHANNEL);
-    const source = bus.from(EVENT_2_CHANNEL);
-    source.subscribe({next: (message: any) => this._dispatchEvent(message)});
-  }
-
-  createRenderer(element: any, type: RendererType2|null): Renderer2 {
-    const renderer = new WebWorkerRenderer2(this);
-
-    const id = this.renderStore.allocateId();
-    this.renderStore.store(renderer, id);
-    this.callUI('createRenderer', [
-      new FnArg(element, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(type, SerializerTypes.RENDERER_TYPE_2),
-      new FnArg(renderer, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-
-    return renderer;
-  }
-
-  begin() {}
-  end() {}
-
-  callUI(fnName: string, fnArgs: FnArg[]) {
-    const args = new UiArguments(fnName, fnArgs);
-    this._messageBroker.runOnService(args, null);
-  }
-
-  allocateNode(): WebWorkerRenderNode {
-    const result = new WebWorkerRenderNode();
-    const id = this.renderStore.allocateId();
-    this.renderStore.store(result, id);
-    return result;
-  }
-
-  freeNode(node: any) {
-    this.renderStore.remove(node);
-  }
-
-  allocateId(): number {
-    return this.renderStore.allocateId();
-  }
-
-  private _dispatchEvent(message: {[key: string]: any}): void {
-    const element: WebWorkerRenderNode =
-        this._serializer.deserialize(message['element'], SerializerTypes.RENDER_STORE_OBJECT);
-
-    const eventName = message['eventName'];
-    const target = message['eventTarget'];
-    const event = message['event'];
-
-    if (target) {
-      this.globalEvents.dispatchEvent(eventNameWithTarget(target, eventName), event);
-    } else {
-      element.events.dispatchEvent(eventName, event);
-    }
-  }
-}
-
-
-export class WebWorkerRenderer2 implements Renderer2 {
-  data: {[key: string]: any} = Object.create(null);
-
-  constructor(private _rendererFactory: WebWorkerRendererFactory2) {}
-
-  private asFnArg = new FnArg(this, SerializerTypes.RENDER_STORE_OBJECT);
-
-  destroy(): void {
-    this.callUIWithRenderer('destroy');
-  }
-
-  destroyNode(node: any) {
-    this.callUIWithRenderer('destroyNode', [new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT)]);
-    this._rendererFactory.freeNode(node);
-  }
-
-  createElement(name: string, namespace?: string): any {
-    const node = this._rendererFactory.allocateNode();
-    this.callUIWithRenderer('createElement', [
-      new FnArg(name),
-      new FnArg(namespace),
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-    return node;
-  }
-
-  createComment(value: string): any {
-    const node = this._rendererFactory.allocateNode();
-    this.callUIWithRenderer('createComment', [
-      new FnArg(value),
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-    return node;
-  }
-
-  createText(value: string): any {
-    const node = this._rendererFactory.allocateNode();
-    this.callUIWithRenderer('createText', [
-      new FnArg(value),
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-    return node;
-  }
-
-  appendChild(parent: any, newChild: any): void {
-    this.callUIWithRenderer('appendChild', [
-      new FnArg(parent, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(newChild, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-  }
-
-  insertBefore(parent: any, newChild: any, refChild: any): void {
-    if (!parent) {
-      return;
-    }
-
-    this.callUIWithRenderer('insertBefore', [
-      new FnArg(parent, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(newChild, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(refChild, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-  }
-
-  removeChild(parent: any, oldChild: any): void {
-    this.callUIWithRenderer('removeChild', [
-      new FnArg(parent, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(oldChild, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-  }
-
-  selectRootElement(selectorOrNode: string|any): any {
-    const node = this._rendererFactory.allocateNode();
-    this.callUIWithRenderer('selectRootElement', [
-      new FnArg(selectorOrNode),
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-    return node;
-  }
-
-  parentNode(node: any): any {
-    const res = this._rendererFactory.allocateNode();
-    this.callUIWithRenderer('parentNode', [
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(res, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-    return res;
-  }
-
-  nextSibling(node: any): any {
-    const res = this._rendererFactory.allocateNode();
-    this.callUIWithRenderer('nextSibling', [
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(res, SerializerTypes.RENDER_STORE_OBJECT),
-    ]);
-    return res;
-  }
-
-  setAttribute(el: any, name: string, value: string, namespace?: string): void {
-    this.callUIWithRenderer('setAttribute', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(name),
-      new FnArg(value),
-      new FnArg(namespace),
-    ]);
-  }
-
-  removeAttribute(el: any, name: string, namespace?: string): void {
-    this.callUIWithRenderer('removeAttribute', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(name),
-      new FnArg(namespace),
-    ]);
-  }
-
-  addClass(el: any, name: string): void {
-    this.callUIWithRenderer('addClass', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(name),
-    ]);
-  }
-
-  removeClass(el: any, name: string): void {
-    this.callUIWithRenderer('removeClass', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(name),
-    ]);
-  }
-
-  setStyle(el: any, style: string, value: any, flags: RendererStyleFlags2): void {
-    this.callUIWithRenderer('setStyle', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(style),
-      new FnArg(value),
-      new FnArg(flags),
-    ]);
-  }
-
-  removeStyle(el: any, style: string, flags: RendererStyleFlags2): void {
-    this.callUIWithRenderer('removeStyle', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(style),
-      new FnArg(flags),
-    ]);
-  }
-
-  setProperty(el: any, name: string, value: any): void {
-    this.callUIWithRenderer('setProperty', [
-      new FnArg(el, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(name),
-      new FnArg(value),
-    ]);
-  }
-
-  setValue(node: any, value: string): void {
-    this.callUIWithRenderer('setValue', [
-      new FnArg(node, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(value),
-    ]);
-  }
-
-  listen(
-      target: 'window'|'document'|'body'|any, eventName: string,
-      listener: (event: any) => boolean): () => void {
-    const unlistenId = this._rendererFactory.allocateId();
-
-    const [targetEl, targetName, fullName]: [any, string|null, string|null] =
-        typeof target === 'string' ? [null, target, `${target}:${eventName}`] :
-                                     [target, null, null];
-
-    if (fullName) {
-      this._rendererFactory.globalEvents.listen(fullName, listener);
-    } else {
-      targetEl.events.listen(eventName, listener);
-    }
-
-    this.callUIWithRenderer('listen', [
-      new FnArg(targetEl, SerializerTypes.RENDER_STORE_OBJECT),
-      new FnArg(targetName),
-      new FnArg(eventName),
-      new FnArg(unlistenId),
-    ]);
-
-    return () => {
-      if (fullName) {
-        this._rendererFactory.globalEvents.unlisten(fullName, listener);
-      } else {
-        targetEl.events.unlisten(eventName, listener);
-      }
-      this.callUIWithRenderer('unlisten', [new FnArg(unlistenId)]);
-    };
-  }
-
-  private callUIWithRenderer(fnName: string, fnArgs: FnArg[] = []) {
-    // always pass the renderer as the first arg
-    this._rendererFactory.callUI(fnName, [this.asFnArg, ...fnArgs]);
-  }
-}
-
-export class WebWorkerRenderNode {
-  events = new NamedEventEmitter();
-}
diff --git a/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts b/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts
deleted file mode 100644
index f864110dc5..0000000000
--- a/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts
+++ /dev/null
@@ -1,106 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {ɵDomAdapter as DomAdapter, ɵsetRootDomAdapter as setRootDomAdapter} from '@angular/common';
-
-/**
- * This adapter is required to log error messages.
- *
- * Note: other methods all throw as the DOM is not accessible directly in web worker context.
- */
-export class WorkerDomAdapter extends DomAdapter {
-  static makeCurrent() {
-    setRootDomAdapter(new WorkerDomAdapter());
-  }
-
-  log(error: any) {
-    // tslint:disable-next-line:no-console
-    console.log(error);
-  }
-
-  logGroup(error: any) {
-    if (console.group) {
-      console.group(error);
-      if (console.error) {
-        console.error(error);
-      } else {
-        // tslint:disable-next-line:no-console
-        console.log(error);
-      }
-    } else {
-      // tslint:disable-next-line:no-console
-      console.log(error);
-    }
-  }
-
-  logGroupEnd() {
-    if (console.groupEnd) {
-      console.groupEnd();
-    }
-  }
-
-  getProperty(el: Element, name: string): any {
-    throw 'not implemented';
-  }
-
-  onAndCancel(el: any, evt: any, listener: any): Function {
-    throw 'not implemented';
-  }
-  dispatchEvent(el: any, evt: any) {
-    throw 'not implemented';
-  }
-  remove(el: any): Node {
-    throw 'not implemented';
-  }
-  createElement(tagName: any, doc?: any): HTMLElement {
-    throw 'not implemented';
-  }
-  createHtmlDocument(): HTMLDocument {
-    throw 'not implemented';
-  }
-  getDefaultDocument(): Document {
-    throw 'not implemented';
-  }
-  isElementNode(node: any): boolean {
-    throw 'not implemented';
-  }
-  isShadowRoot(node: any): boolean {
-    throw 'not implemented';
-  }
-  supportsDOMEvents(): boolean {
-    throw 'not implemented';
-  }
-  getGlobalEventTarget(doc: Document, target: string): any {
-    throw 'not implemented';
-  }
-  getHistory(): History {
-    throw 'not implemented';
-  }
-  getLocation(): Location {
-    throw 'not implemented';
-  }
-  getBaseHref(doc: Document): string {
-    throw 'not implemented';
-  }
-  resetBaseElement(): void {
-    throw 'not implemented';
-  }
-  getUserAgent(): string {
-    return 'Fake user agent';
-  }
-  performanceNow(): number {
-    throw 'not implemented';
-  }
-
-  supportsCookies(): boolean {
-    return false;
-  }
-  getCookie(name: string): string {
-    throw 'not implemented';
-  }
-}
diff --git a/packages/platform-webworker/src/worker_app.ts b/packages/platform-webworker/src/worker_app.ts
deleted file mode 100644
index b913c915d2..0000000000
--- a/packages/platform-webworker/src/worker_app.ts
+++ /dev/null
@@ -1,86 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {CommonModule, DOCUMENT, ViewportScroller, ɵNullViewportScroller as NullViewportScroller, ɵPLATFORM_WORKER_APP_ID as PLATFORM_WORKER_APP_ID} from '@angular/common';
-import {APP_INITIALIZER, ApplicationModule, createPlatformFactory, ErrorHandler, NgModule, NgZone, PLATFORM_ID, platformCore, PlatformRef, RendererFactory2, StaticProvider, ɵINJECTOR_SCOPE as INJECTOR_SCOPE} from '@angular/core';
-import {ɵBROWSER_SANITIZATION_PROVIDERS as BROWSER_SANITIZATION_PROVIDERS} from '@angular/platform-browser';
-
-import {ON_WEB_WORKER} from './web_workers/shared/api';
-import {ClientMessageBrokerFactory} from './web_workers/shared/client_message_broker';
-import {MessageBus} from './web_workers/shared/message_bus';
-import {PostMessageBus, PostMessageBusSink, PostMessageBusSource} from './web_workers/shared/post_message_bus';
-import {RenderStore} from './web_workers/shared/render_store';
-import {Serializer} from './web_workers/shared/serializer';
-import {ServiceMessageBrokerFactory} from './web_workers/shared/service_message_broker';
-import {WebWorkerRendererFactory2} from './web_workers/worker/renderer';
-import {WorkerDomAdapter} from './web_workers/worker/worker_adapter';
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const platformWorkerApp: (extraProviders?: StaticProvider[]|undefined) => PlatformRef =
-    createPlatformFactory(
-        platformCore, 'workerApp', [{provide: PLATFORM_ID, useValue: PLATFORM_WORKER_APP_ID}]);
-
-export function errorHandler(): ErrorHandler {
-  return new ErrorHandler();
-}
-
-
-// TODO(jteplitz602): remove this and compile with lib.webworker.d.ts (#3492)
-const _postMessage = {
-  postMessage: (message: any, transferrables: [Transferable]) => {
-    (<any>postMessage)(message, transferrables);
-  }
-};
-
-export function createMessageBus(zone: NgZone): MessageBus {
-  const sink = new PostMessageBusSink(_postMessage);
-  const source = new PostMessageBusSource();
-  const bus = new PostMessageBus(sink, source);
-  bus.attachToZone(zone);
-  return bus;
-}
-
-export function setupWebWorker(): void {
-  WorkerDomAdapter.makeCurrent();
-}
-
-/**
- * The ng module for the worker app side.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-@NgModule({
-  providers: [
-    BROWSER_SANITIZATION_PROVIDERS,
-    {provide: INJECTOR_SCOPE, useValue: 'root'},
-    Serializer,
-    {provide: DOCUMENT, useValue: null},
-    ClientMessageBrokerFactory,
-    ServiceMessageBrokerFactory,
-    WebWorkerRendererFactory2,
-    {provide: RendererFactory2, useExisting: WebWorkerRendererFactory2},
-    {provide: ON_WEB_WORKER, useValue: true},
-    RenderStore,
-    {provide: ErrorHandler, useFactory: errorHandler, deps: []},
-    {provide: MessageBus, useFactory: createMessageBus, deps: [NgZone]},
-    {provide: APP_INITIALIZER, useValue: setupWebWorker, multi: true},
-    {provide: ViewportScroller, useClass: NullViewportScroller, deps: []},
-  ],
-  exports: [
-    CommonModule,
-    ApplicationModule,
-  ]
-})
-export class WorkerAppModule {
-}
diff --git a/packages/platform-webworker/src/worker_render.ts b/packages/platform-webworker/src/worker_render.ts
deleted file mode 100644
index fe69043ebf..0000000000
--- a/packages/platform-webworker/src/worker_render.ts
+++ /dev/null
@@ -1,193 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {DOCUMENT, ɵPLATFORM_WORKER_UI_ID as PLATFORM_WORKER_UI_ID} from '@angular/common';
-import {createPlatformFactory, ErrorHandler, Injectable, InjectionToken, Injector, isDevMode, NgZone, PLATFORM_ID, PLATFORM_INITIALIZER, platformCore, RendererFactory2, StaticProvider, Testability, ɵAPP_ID_RANDOM_PROVIDER as APP_ID_RANDOM_PROVIDER, ɵsetDocument} from '@angular/core';
-import {EVENT_MANAGER_PLUGINS, EventManager, HAMMER_GESTURE_CONFIG, HammerGestureConfig, ɵBROWSER_SANITIZATION_PROVIDERS as BROWSER_SANITIZATION_PROVIDERS, ɵBrowserDomAdapter as BrowserDomAdapter, ɵBrowserGetTestability as BrowserGetTestability, ɵDomEventsPlugin as DomEventsPlugin, ɵDomRendererFactory2 as DomRendererFactory2, ɵDomSharedStylesHost as DomSharedStylesHost, ɵHammerGesturesPlugin as HammerGesturesPlugin, ɵKeyEventsPlugin as KeyEventsPlugin, ɵSharedStylesHost as SharedStylesHost} from '@angular/platform-browser';
-
-import {ON_WEB_WORKER} from './web_workers/shared/api';
-import {ClientMessageBrokerFactory} from './web_workers/shared/client_message_broker';
-import {MessageBus} from './web_workers/shared/message_bus';
-import {PostMessageBus, PostMessageBusSink, PostMessageBusSource} from './web_workers/shared/post_message_bus';
-import {RenderStore} from './web_workers/shared/render_store';
-import {Serializer} from './web_workers/shared/serializer';
-import {ServiceMessageBrokerFactory} from './web_workers/shared/service_message_broker';
-import {MessageBasedRenderer2} from './web_workers/ui/renderer';
-
-
-
-/**
- * Wrapper class that exposes the Worker
- * and underlying {@link MessageBus} for lower level message passing.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-@Injectable()
-export class WebWorkerInstance {
-  // TODO(issue/24571): remove '!'.
-  public worker!: Worker;
-  // TODO(issue/24571): remove '!'.
-  public bus!: MessageBus;
-
-  /** @internal */
-  public init(worker: Worker, bus: MessageBus) {
-    this.worker = worker;
-    this.bus = bus;
-  }
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const WORKER_SCRIPT = new InjectionToken<string>('WebWorkerScript');
-
-/**
- * A multi-provider used to automatically call the `start()` method after the service is
- * created.
- *
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const WORKER_UI_STARTABLE_MESSAGING_SERVICE =
-    new InjectionToken<({start: () => void})[]>('WorkerRenderStartableMsgService');
-
-export const _WORKER_UI_PLATFORM_PROVIDERS: StaticProvider[] = [
-  {provide: NgZone, useFactory: createNgZone, deps: []},
-  {
-    provide: MessageBasedRenderer2,
-    deps: [ServiceMessageBrokerFactory, MessageBus, Serializer, RenderStore, RendererFactory2]
-  },
-  {provide: WORKER_UI_STARTABLE_MESSAGING_SERVICE, useExisting: MessageBasedRenderer2, multi: true},
-  BROWSER_SANITIZATION_PROVIDERS,
-  {provide: ErrorHandler, useFactory: _exceptionHandler, deps: []},
-  {provide: DOCUMENT, useFactory: _document, deps: []},
-  // TODO(jteplitz602): Investigate if we definitely need EVENT_MANAGER on the render thread
-  // #5298
-  {
-    provide: EVENT_MANAGER_PLUGINS,
-    useClass: DomEventsPlugin,
-    deps: [DOCUMENT, NgZone],
-    multi: true
-  },
-  {provide: EVENT_MANAGER_PLUGINS, useClass: KeyEventsPlugin, deps: [DOCUMENT], multi: true},
-  {
-    provide: EVENT_MANAGER_PLUGINS,
-    useClass: HammerGesturesPlugin,
-    deps: [DOCUMENT, HAMMER_GESTURE_CONFIG],
-    multi: true
-  },
-  {provide: HAMMER_GESTURE_CONFIG, useClass: HammerGestureConfig, deps: []},
-  APP_ID_RANDOM_PROVIDER,
-  {provide: DomRendererFactory2, deps: [EventManager, DomSharedStylesHost]},
-  {provide: RendererFactory2, useExisting: DomRendererFactory2},
-  {provide: SharedStylesHost, useExisting: DomSharedStylesHost},
-  {
-    provide: ServiceMessageBrokerFactory,
-    useClass: ServiceMessageBrokerFactory,
-    deps: [MessageBus, Serializer]
-  },
-  {
-    provide: ClientMessageBrokerFactory,
-    useClass: ClientMessageBrokerFactory,
-    deps: [MessageBus, Serializer]
-  },
-  {provide: Serializer, deps: [RenderStore]},
-  {provide: ON_WEB_WORKER, useValue: false},
-  {provide: RenderStore, deps: []},
-  {provide: DomSharedStylesHost, deps: [DOCUMENT]},
-  {provide: Testability, deps: [NgZone]},
-  {provide: EventManager, deps: [EVENT_MANAGER_PLUGINS, NgZone]},
-  {provide: WebWorkerInstance, deps: []},
-  {
-    provide: PLATFORM_INITIALIZER,
-    useFactory: initWebWorkerRenderPlatform,
-    multi: true,
-    deps: [Injector]
-  },
-  {provide: PLATFORM_ID, useValue: PLATFORM_WORKER_UI_ID},
-  {provide: MessageBus, useFactory: messageBusFactory, deps: [WebWorkerInstance]},
-];
-
-function initializeGenericWorkerRenderer(injector: Injector) {
-  const bus = injector.get(MessageBus);
-  const zone = injector.get<NgZone>(NgZone);
-  bus.attachToZone(zone);
-
-  // initialize message services after the bus has been created
-  const services = injector.get(WORKER_UI_STARTABLE_MESSAGING_SERVICE);
-  zone.runGuarded(() => {
-    services.forEach((svc: any) => {
-      svc.start();
-    });
-  });
-}
-
-function messageBusFactory(instance: WebWorkerInstance): MessageBus {
-  return instance.bus;
-}
-
-function initWebWorkerRenderPlatform(injector: Injector): () => void {
-  return () => {
-    BrowserDomAdapter.makeCurrent();
-    BrowserGetTestability.init();
-    let scriptUri: string;
-    try {
-      scriptUri = injector.get(WORKER_SCRIPT);
-    } catch {
-      throw new Error(
-          'You must provide your WebWorker\'s initialization script with the WORKER_SCRIPT token');
-    }
-
-    const instance = injector.get(WebWorkerInstance);
-    spawnWebWorker(scriptUri, instance);
-
-    initializeGenericWorkerRenderer(injector);
-  };
-}
-
-/**
- * @publicApi
- * @deprecated platform-webworker is deprecated in Angular and will be removed in a future version
- *     of Angular
- */
-export const platformWorkerUi =
-    createPlatformFactory(platformCore, 'workerUi', _WORKER_UI_PLATFORM_PROVIDERS);
-
-function _exceptionHandler(): ErrorHandler {
-  return new ErrorHandler();
-}
-
-function _document(): any {
-  // Tell ivy about the global document
-  ɵsetDocument(document);
-  return document;
-}
-
-function createNgZone(): NgZone {
-  return new NgZone({enableLongStackTrace: isDevMode()});
-}
-
-/**
- * Spawns a new class and initializes the WebWorkerInstance
- */
-function spawnWebWorker(uri: string, instance: WebWorkerInstance): void {
-  const webWorker: Worker = new Worker(uri);
-  // webWorker is casted to any because the lib.d.ts signature changed in TS3.5 to require the
-  // transfer argument in postMessage method.
-  // this seems wrong but since all of this code is deprecated it shouldn't matter that much.
-  const sink = new PostMessageBusSink(webWorker as any);
-  const source = new PostMessageBusSource(webWorker);
-  const bus = new PostMessageBus(sink, source);
-
-  instance.init(webWorker, bus);
-}
diff --git a/packages/platform-webworker/test/BUILD.bazel b/packages/platform-webworker/test/BUILD.bazel
deleted file mode 100644
index 21b87b2f08..0000000000
--- a/packages/platform-webworker/test/BUILD.bazel
+++ /dev/null
@@ -1,35 +0,0 @@
-load("//tools:defaults.bzl", "jasmine_node_test", "karma_web_test_suite", "ts_library")
-
-ts_library(
-    name = "test_lib",
-    testonly = True,
-    srcs = glob(["**/*.ts"]),
-    deps = [
-        "//packages:types",
-        "//packages/common",
-        "//packages/compiler",
-        "//packages/core",
-        "//packages/core/testing",
-        "//packages/platform-browser",
-        "//packages/platform-browser-dynamic",
-        "//packages/platform-browser-dynamic/testing",
-        "//packages/platform-browser/testing",
-        "//packages/platform-webworker",
-        "//packages/private/testing",
-    ],
-)
-
-jasmine_node_test(
-    name = "test",
-    bootstrap = ["//tools/testing:node_es5"],
-    deps = [
-        ":test_lib",
-    ],
-)
-
-karma_web_test_suite(
-    name = "test_web",
-    deps = [
-        ":test_lib",
-    ],
-)
diff --git a/packages/platform-webworker/test/web_workers/shared/message_bus_spec.ts b/packages/platform-webworker/test/web_workers/shared/message_bus_spec.ts
deleted file mode 100644
index c101661182..0000000000
--- a/packages/platform-webworker/test/web_workers/shared/message_bus_spec.ts
+++ /dev/null
@@ -1,172 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {NgZone} from '@angular/core';
-import {withModule} from '@angular/core/testing/src/test_bed';
-import {AsyncTestCompleter, beforeEach, describe, expect, inject, it, MockNgZone} from '@angular/core/testing/src/testing_internal';
-import {MessageBus} from '@angular/platform-webworker/src/web_workers/shared/message_bus';
-
-import {createConnectedMessageBus} from './message_bus_util';
-
-{
-  /**
-   * Tests the PostMessageBus
-   */
-  describe('MessageBus', () => {
-    let bus: MessageBus;
-
-    beforeEach(() => {
-      bus = createConnectedMessageBus();
-    });
-
-    it('should pass messages in the same channel from sink to source',
-       inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
-         const CHANNEL = 'CHANNEL 1';
-         const MESSAGE = 'Test message';
-         bus.initChannel(CHANNEL, false);
-
-         const fromEmitter = bus.from(CHANNEL);
-         fromEmitter.subscribe({
-           next: (message: any) => {
-             expect(message).toEqual(MESSAGE);
-             async.done();
-           }
-         });
-         const toEmitter = bus.to(CHANNEL);
-         toEmitter.emit(MESSAGE);
-       }));
-
-    it('should broadcast', inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
-         const CHANNEL = 'CHANNEL 1';
-         const MESSAGE = 'TESTING';
-         const NUM_LISTENERS = 2;
-         bus.initChannel(CHANNEL, false);
-
-         let callCount = 0;
-         const emitHandler = (message: any) => {
-           expect(message).toEqual(MESSAGE);
-           callCount++;
-           if (callCount == NUM_LISTENERS) {
-             async.done();
-           }
-         };
-
-         for (let i = 0; i < NUM_LISTENERS; i++) {
-           const emitter = bus.from(CHANNEL);
-           emitter.subscribe({next: emitHandler});
-         }
-
-         const toEmitter = bus.to(CHANNEL);
-         toEmitter.emit(MESSAGE);
-       }));
-
-    it('should keep channels independent',
-       inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
-         const CHANNEL_ONE = 'CHANNEL 1';
-         const CHANNEL_TWO = 'CHANNEL 2';
-         const MESSAGE_ONE = 'This is a message on CHANNEL 1';
-         const MESSAGE_TWO = 'This is a message on CHANNEL 2';
-         let callCount = 0;
-         bus.initChannel(CHANNEL_ONE, false);
-         bus.initChannel(CHANNEL_TWO, false);
-
-         const firstFromEmitter = bus.from(CHANNEL_ONE);
-         firstFromEmitter.subscribe({
-           next: (message: any) => {
-             expect(message).toEqual(MESSAGE_ONE);
-             callCount++;
-             if (callCount == 2) {
-               async.done();
-             }
-           }
-         });
-         const secondFromEmitter = bus.from(CHANNEL_TWO);
-         secondFromEmitter.subscribe({
-           next: (message: any) => {
-             expect(message).toEqual(MESSAGE_TWO);
-             callCount++;
-             if (callCount == 2) {
-               async.done();
-             }
-           }
-         });
-
-         const firstToEmitter = bus.to(CHANNEL_ONE);
-         firstToEmitter.emit(MESSAGE_ONE);
-
-         const secondToEmitter = bus.to(CHANNEL_TWO);
-         secondToEmitter.emit(MESSAGE_TWO);
-       }));
-  });
-
-  describe('PostMessageBusSink', () => {
-    let bus: MessageBus;
-    const CHANNEL = 'Test Channel';
-
-    function setup(runInZone: boolean, zone: NgZone) {
-      bus.attachToZone(zone);
-      bus.initChannel(CHANNEL, runInZone);
-    }
-
-    /**
-     * Flushes pending messages and then runs the given function.
-     */
-    // TODO(mlaval): timeout is fragile, test to be rewritten
-    function flushMessages(fn: () => void) {
-      setTimeout(fn, 50);
-    }
-
-    it('should buffer messages and wait for the zone to exit before sending',
-       withModule({providers: [{provide: NgZone, useClass: MockNgZone}]})
-           .inject(
-               [AsyncTestCompleter, NgZone],
-               (async: AsyncTestCompleter, zone: MockNgZone) => {
-                 bus = createConnectedMessageBus();
-                 setup(true, zone);
-
-                 let wasCalled = false;
-                 bus.from(CHANNEL).subscribe({
-                   next: (message: any) => {
-                     wasCalled = true;
-                   }
-                 });
-                 bus.to(CHANNEL).emit('hi');
-
-
-                 flushMessages(() => {
-                   expect(wasCalled).toBeFalsy();
-
-                   zone.simulateZoneExit();
-                   flushMessages(() => {
-                     expect(wasCalled).toBeTruthy();
-                     async.done();
-                   });
-                 });
-               }),
-       500);
-
-    it('should send messages immediately when run outside the zone',
-       inject([AsyncTestCompleter, NgZone], (async: AsyncTestCompleter, zone: MockNgZone) => {
-         bus = createConnectedMessageBus();
-         setup(false, zone);
-
-         let wasCalled = false;
-         bus.from(CHANNEL).subscribe({
-           next: (message: any) => {
-             wasCalled = true;
-           }
-         });
-         bus.to(CHANNEL).emit('hi');
-
-         flushMessages(() => {
-           expect(wasCalled).toBeTruthy();
-           async.done();
-         });
-       }), 10000);
-  });
-}
diff --git a/packages/platform-webworker/test/web_workers/shared/message_bus_util.ts b/packages/platform-webworker/test/web_workers/shared/message_bus_util.ts
deleted file mode 100644
index 99b886a2a5..0000000000
--- a/packages/platform-webworker/test/web_workers/shared/message_bus_util.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {MessageBus} from '@angular/platform-webworker/src/web_workers/shared/message_bus';
-import {PostMessageBus, PostMessageBusSink, PostMessageBusSource} from '@angular/platform-webworker/src/web_workers/shared/post_message_bus';
-
-
-/*
- * Returns a PostMessageBus that's sink is connected to its own source.
- * Useful for testing the sink and source.
- */
-export function createConnectedMessageBus(): MessageBus {
-  const mockPostMessage = new MockPostMessage();
-  const source = new PostMessageBusSource(<any>mockPostMessage);
-  const sink = new PostMessageBusSink(mockPostMessage);
-
-  return new PostMessageBus(sink, source);
-}
-
-class MockPostMessage {
-  // TODO(issue/24571): remove '!'.
-  private _listener!: EventListener;
-
-  addEventListener(type: string, listener: EventListener, useCapture?: boolean): void {
-    if (type === 'message') {
-      this._listener = listener;
-    }
-  }
-
-  postMessage(data: any, transfer?: [Transferable]): void {
-    this._listener(<any>{data: data});
-  }
-}
diff --git a/packages/platform-webworker/test/web_workers/shared/mock_event_emitter.ts b/packages/platform-webworker/test/web_workers/shared/mock_event_emitter.ts
deleted file mode 100644
index 48640d8df5..0000000000
--- a/packages/platform-webworker/test/web_workers/shared/mock_event_emitter.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {EventEmitter} from '@angular/core';
-
-export class MockEventEmitter<T> extends EventEmitter<T> {
-  private _nextFns: Function[] = [];
-
-  constructor() {
-    super();
-  }
-
-  subscribe(generator: any): any {
-    this._nextFns.push(generator.next);
-    return new MockDisposable();
-  }
-
-  emit(value: any) {
-    this._nextFns.forEach(fn => fn(value));
-  }
-}
-
-class MockDisposable {
-  isUnsubscribed: boolean = false;
-  unsubscribe(): void {}
-}
diff --git a/packages/platform-webworker/test/web_workers/shared/render_store_spec.ts b/packages/platform-webworker/test/web_workers/shared/render_store_spec.ts
deleted file mode 100644
index 190704a3ee..0000000000
--- a/packages/platform-webworker/test/web_workers/shared/render_store_spec.ts
+++ /dev/null
@@ -1,37 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {RenderStore} from '@angular/platform-webworker/src/web_workers/shared/render_store';
-
-{
-  describe('RenderStoreSpec', () => {
-    let store: RenderStore;
-    beforeEach(() => {
-      store = new RenderStore();
-    });
-
-    it('should allocate ids', () => {
-      expect(store.allocateId()).toBe(0);
-      expect(store.allocateId()).toBe(1);
-    });
-
-    it('should serialize objects', () => {
-      const id = store.allocateId();
-      const obj = 'testObject';
-      store.store(obj, id);
-      expect(store.serialize(obj)).toBe(id);
-    });
-
-    it('should deserialize objects', () => {
-      const id = store.allocateId();
-      const obj = 'testObject';
-      store.store(obj, id);
-      expect(store.deserialize(id)).toBe(obj);
-    });
-  });
-}
diff --git a/packages/platform-webworker/test/web_workers/shared/service_message_broker_spec.ts b/packages/platform-webworker/test/web_workers/shared/service_message_broker_spec.ts
deleted file mode 100644
index f3fcfe1970..0000000000
--- a/packages/platform-webworker/test/web_workers/shared/service_message_broker_spec.ts
+++ /dev/null
@@ -1,73 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {beforeEach, beforeEachProviders, describe, expect, inject, it} from '@angular/core/testing/src/testing_internal';
-import {ON_WEB_WORKER} from '@angular/platform-webworker/src/web_workers/shared/api';
-import {RenderStore} from '@angular/platform-webworker/src/web_workers/shared/render_store';
-import {Serializer, SerializerTypes} from '@angular/platform-webworker/src/web_workers/shared/serializer';
-import {ServiceMessageBroker} from '@angular/platform-webworker/src/web_workers/shared/service_message_broker';
-
-import {createPairedMessageBuses} from './web_worker_test_util';
-
-{
-  const CHANNEL = 'UIMessageBroker Test Channel';
-  const TEST_METHOD = 'TEST_METHOD';
-  const PASSED_ARG_1 = 5;
-  const PASSED_ARG_2 = 'TEST';
-  const RESULT = 20;
-  const ID = 'methodId';
-
-  beforeEachProviders(() => [Serializer, {provide: ON_WEB_WORKER, useValue: true}, RenderStore]);
-
-  describe('UIMessageBroker', () => {
-    let messageBuses: any /** TODO #9100 */;
-
-    beforeEach(() => {
-      messageBuses = createPairedMessageBuses();
-      messageBuses.ui.initChannel(CHANNEL);
-      messageBuses.worker.initChannel(CHANNEL);
-    });
-    it('should call registered method with correct arguments',
-       inject([Serializer], (serializer: Serializer) => {
-         const broker = new (ServiceMessageBroker as any)(messageBuses.ui, serializer, CHANNEL);
-         broker.registerMethod(
-             TEST_METHOD, [SerializerTypes.PRIMITIVE, SerializerTypes.PRIMITIVE],
-             (arg1: any, arg2: any) => {
-               expect(arg1).toEqual(PASSED_ARG_1);
-               expect(arg2).toEqual(PASSED_ARG_2);
-             });
-         messageBuses.worker.to(CHANNEL).emit({
-           'method': TEST_METHOD,
-           'args': [PASSED_ARG_1, PASSED_ARG_2],
-         });
-       }));
-
-    it('should return promises to the worker', inject([Serializer], (serializer: Serializer) => {
-         const broker = new (ServiceMessageBroker as any)(messageBuses.ui, serializer, CHANNEL);
-         broker.registerMethod(TEST_METHOD, [SerializerTypes.PRIMITIVE], (arg1: any) => {
-           expect(arg1).toEqual(PASSED_ARG_1);
-           return new Promise((res, rej) => {
-             try {
-               res(RESULT);
-             } catch (e) {
-               rej(e);
-             }
-           });
-         });
-         messageBuses.worker.to(CHANNEL).emit(
-             {'method': TEST_METHOD, 'id': ID, 'args': [PASSED_ARG_1]});
-         messageBuses.worker.from(CHANNEL).subscribe({
-           next: (data: any) => {
-             expect(data.type).toEqual('result');
-             expect(data.id).toEqual(ID);
-             expect(data.value).toEqual(RESULT);
-           },
-         });
-       }));
-  });
-}
diff --git a/packages/platform-webworker/test/web_workers/shared/web_worker_test_util.ts b/packages/platform-webworker/test/web_workers/shared/web_worker_test_util.ts
deleted file mode 100644
index 3fd3f7f97c..0000000000
--- a/packages/platform-webworker/test/web_workers/shared/web_worker_test_util.ts
+++ /dev/null
@@ -1,150 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Type} from '@angular/core';
-import {NgZone} from '@angular/core/src/zone/ng_zone';
-import {ClientMessageBroker, ClientMessageBrokerFactory, UiArguments} from '@angular/platform-webworker/src/web_workers/shared/client_message_broker';
-import {MessageBus, MessageBusSink, MessageBusSource} from '@angular/platform-webworker/src/web_workers/shared/message_bus';
-import {SpyMessageBroker} from '../worker/spies';
-
-import {MockEventEmitter} from './mock_event_emitter';
-
-/**
- * Returns two MessageBus instances that are attached to each other.
- * Such that whatever goes into one's sink comes out the others source.
- */
-export function createPairedMessageBuses(): PairedMessageBuses {
-  const firstChannels: {[key: string]: MockEventEmitter<any>} = {};
-  const workerMessageBusSink = new MockMessageBusSink(firstChannels);
-  const uiMessageBusSource = new MockMessageBusSource(firstChannels);
-
-  const secondChannels: {[key: string]: MockEventEmitter<any>} = {};
-  const uiMessageBusSink = new MockMessageBusSink(secondChannels);
-  const workerMessageBusSource = new MockMessageBusSource(secondChannels);
-
-  return new PairedMessageBuses(
-      new MockMessageBus(uiMessageBusSink, uiMessageBusSource),
-      new MockMessageBus(workerMessageBusSink, workerMessageBusSource));
-}
-
-/**
- * Spies on the given {@link SpyMessageBroker} and expects a call with the given methodName
- * andvalues.
- * If a handler is provided it will be called to handle the request.
- * Only intended to be called on a given broker instance once.
- */
-export function expectBrokerCall(
-    broker: SpyMessageBroker, methodName: string, vals?: Array<any>,
-    handler?: (..._: any[]) => Promise<any>| void): void {
-  broker.spy('runOnService').and.callFake((args: UiArguments, returnType: Type<any>) => {
-    expect(args.method).toEqual(methodName);
-    if (vals != null) {
-      expect(args.args!.length).toEqual(vals.length);
-      vals.forEach((v, i) => {
-        expect(v).toEqual(args.args![i].value);
-      });
-    }
-    let promise: Promise<any>|void = null!;
-    if (handler != null) {
-      const givenValues = args.args!.map((arg) => arg.value);
-      if (givenValues.length > 0) {
-        promise = handler(givenValues);
-      } else {
-        promise = handler();
-      }
-    }
-    if (promise == null) {
-      promise = new Promise((res, rej) => {
-        try {
-          res();
-        } catch (e) {
-          rej(e);
-        }
-      });
-    }
-    return promise;
-  });
-}
-
-export class PairedMessageBuses {
-  constructor(public ui: MessageBus, public worker: MessageBus) {}
-}
-
-export class MockMessageBusSource implements MessageBusSource {
-  constructor(private _channels: {[key: string]: MockEventEmitter<any>}) {}
-
-  initChannel(channel: string, runInZone = true) {
-    if (!this._channels.hasOwnProperty(channel)) {
-      this._channels[channel] = new MockEventEmitter();
-    }
-  }
-
-  from(channel: string): MockEventEmitter<any> {
-    if (!this._channels.hasOwnProperty(channel)) {
-      throw new Error(`${channel} is not set up. Did you forget to call initChannel?`);
-    }
-    return this._channels[channel];
-  }
-
-  attachToZone(zone: NgZone) {}
-}
-
-export class MockMessageBusSink implements MessageBusSink {
-  constructor(private _channels: {[key: string]: MockEventEmitter<any>}) {}
-
-  initChannel(channel: string, runInZone = true) {
-    if (!this._channels.hasOwnProperty(channel)) {
-      this._channels[channel] = new MockEventEmitter();
-    }
-  }
-
-  to(channel: string): MockEventEmitter<any> {
-    if (!this._channels.hasOwnProperty(channel)) {
-      this._channels[channel] = new MockEventEmitter();
-    }
-    return this._channels[channel];
-  }
-
-  attachToZone(zone: NgZone) {}
-}
-
-/**
- * Mock implementation of the {@link MessageBus} for tests.
- * Runs syncronously, and does not support running within the zone.
- */
-export class MockMessageBus extends MessageBus {
-  constructor(public sink: MockMessageBusSink, public source: MockMessageBusSource) {
-    super();
-  }
-
-  initChannel(channel: string, runInZone = true) {
-    this.sink.initChannel(channel, runInZone);
-    this.source.initChannel(channel, runInZone);
-  }
-
-  to(channel: string): MockEventEmitter<any> {
-    return this.sink.to(channel);
-  }
-
-  from(channel: string): MockEventEmitter<any> {
-    return this.source.from(channel);
-  }
-
-  attachToZone(zone: NgZone) {}
-}
-
-export const _ClientMessageBrokerFactory: {new (a: any, b: any): ClientMessageBrokerFactory} =
-    ClientMessageBrokerFactory;
-export class MockMessageBrokerFactory extends _ClientMessageBrokerFactory {
-  constructor(private _messageBroker: ClientMessageBroker) {
-    super(null!, null!);
-  }
-  createMessageBroker(channel: string, runInZone = true) {
-    return this._messageBroker;
-  }
-}
diff --git a/packages/platform-webworker/test/web_workers/worker/platform_location_spec.ts b/packages/platform-webworker/test/web_workers/worker/platform_location_spec.ts
deleted file mode 100644
index 3350b90995..0000000000
--- a/packages/platform-webworker/test/web_workers/worker/platform_location_spec.ts
+++ /dev/null
@@ -1,97 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {Type} from '@angular/core';
-import {UiArguments} from '@angular/platform-webworker/src/web_workers/shared/client_message_broker';
-import {MessageBus} from '@angular/platform-webworker/src/web_workers/shared/message_bus';
-import {LocationType, SerializerTypes} from '@angular/platform-webworker/src/web_workers/shared/serializer';
-import {WebWorkerPlatformLocation} from '@angular/platform-webworker/src/web_workers/worker/platform_location';
-
-import {createPairedMessageBuses, expectBrokerCall, MockMessageBrokerFactory} from '../shared/web_worker_test_util';
-
-import {SpyMessageBroker} from './spies';
-
-{
-  describe('WebWorkerPlatformLocation', () => {
-    let uiBus: MessageBus = null!;
-    let workerBus: MessageBus = null!;
-    let broker: any = null;
-
-    const TEST_LOCATION = new LocationType(
-        'http://www.example.com', 'http', 'example.com', 'example.com', '80', '/', '', '',
-        'http://www.example.com');
-
-
-    function createWebWorkerPlatformLocation(loc: LocationType): WebWorkerPlatformLocation {
-      broker.spy('runOnService')
-          .and.callFake((args: UiArguments, returnType: Type<any>|SerializerTypes) => {
-            if (args.method === 'getLocation') {
-              return Promise.resolve(loc);
-            }
-          });
-      const factory = new MockMessageBrokerFactory(broker);
-      return new WebWorkerPlatformLocation(factory, workerBus, null!);
-    }
-
-    function testPushOrReplaceState(pushState: boolean) {
-      const platformLocation = createWebWorkerPlatformLocation(null!);
-      const TITLE = 'foo';
-      const URL = 'http://www.example.com/foo';
-      expectBrokerCall(broker, pushState ? 'pushState' : 'replaceState', [null, TITLE, URL]);
-      if (pushState) {
-        platformLocation.pushState(null, TITLE, URL);
-      } else {
-        platformLocation.replaceState(null, TITLE, URL);
-      }
-    }
-
-    beforeEach(() => {
-      const buses = createPairedMessageBuses();
-      uiBus = buses.ui;
-      workerBus = buses.worker;
-      workerBus.initChannel('ng-Router');
-      uiBus.initChannel('ng-Router');
-      broker = new SpyMessageBroker();
-    });
-
-    it('should throw if getBaseHrefFromDOM is called', () => {
-      const platformLocation = createWebWorkerPlatformLocation(null!);
-      expect(() => platformLocation.getBaseHrefFromDOM()).toThrowError();
-    });
-
-    it('should get location on init', () => {
-      const platformLocation = createWebWorkerPlatformLocation(null!);
-      expectBrokerCall(broker, 'getLocation');
-      (platformLocation as any).init();
-    });
-
-    it('should throw if set pathname is called before init finishes', () => {
-      const platformLocation = createWebWorkerPlatformLocation(null!);
-      (platformLocation as any).init();
-      expect(() => platformLocation.pathname = 'TEST').toThrowError();
-    });
-
-    it('should send pathname to render thread', done => {
-      const platformLocation = createWebWorkerPlatformLocation(TEST_LOCATION);
-      (platformLocation as any).init().then((_: any) => {
-        const PATHNAME = '/test';
-        expectBrokerCall(broker, 'setPathname', [PATHNAME]);
-        platformLocation.pathname = PATHNAME;
-        done();
-      });
-    });
-
-    it('should send pushState to render thread', () => {
-      testPushOrReplaceState(true);
-    });
-
-    it('should send replaceState to render thread', () => {
-      testPushOrReplaceState(false);
-    });
-  });
-}
diff --git a/packages/platform-webworker/test/web_workers/worker/renderer_v2_integration_spec.ts b/packages/platform-webworker/test/web_workers/worker/renderer_v2_integration_spec.ts
deleted file mode 100644
index 9acb36a787..0000000000
--- a/packages/platform-webworker/test/web_workers/worker/renderer_v2_integration_spec.ts
+++ /dev/null
@@ -1,225 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {ɵgetDOM as getDOM} from '@angular/common';
-import {Component, ComponentRef, destroyPlatform, Renderer2, RendererFactory2, RendererType2} from '@angular/core';
-import {TestBed} from '@angular/core/testing';
-import {platformBrowserDynamicTesting} from '@angular/platform-browser-dynamic/testing';
-import {DomRendererFactory2} from '@angular/platform-browser/src/dom/dom_renderer';
-import {BrowserTestingModule} from '@angular/platform-browser/testing';
-import {browserDetection, dispatchEvent, hasClass} from '@angular/platform-browser/testing/src/browser_util';
-import {expect} from '@angular/platform-browser/testing/src/matchers';
-import {ClientMessageBrokerFactory} from '@angular/platform-webworker/src/web_workers/shared/client_message_broker';
-import {RenderStore} from '@angular/platform-webworker/src/web_workers/shared/render_store';
-import {Serializer} from '@angular/platform-webworker/src/web_workers/shared/serializer';
-import {ServiceMessageBrokerFactory} from '@angular/platform-webworker/src/web_workers/shared/service_message_broker';
-import {MessageBasedRenderer2} from '@angular/platform-webworker/src/web_workers/ui/renderer';
-import {WebWorkerRendererFactory2} from '@angular/platform-webworker/src/web_workers/worker/renderer';
-import {modifiedInIvy} from '@angular/private/testing';
-
-import {createPairedMessageBuses, PairedMessageBuses} from '../shared/web_worker_test_util';
-
-let lastCreatedRenderer: Renderer2;
-
-{
-  describe('Web Worker Renderer v2', () => {
-    // Don't run on server...
-    if (!getDOM().supportsDOMEvents()) return;
-    // TODO(tbosch): investigate why this is failing on iOS7 for unrelated reasons
-    // Note: it's hard to debug this as SauceLabs starts with iOS8. Maybe drop
-    // iOS7 altogether?
-    if (browserDetection.isIOS7) return;
-
-    let uiRenderStore: RenderStore;
-    let wwRenderStore: RenderStore;
-
-    beforeEach(() => destroyPlatform());
-    afterEach(() => destroyPlatform());
-
-    beforeEach(() => {
-      // UI side
-      uiRenderStore = new RenderStore();
-      const uiInjector = new TestBed();
-      uiInjector.initTestEnvironment(BrowserTestingModule, platformBrowserDynamicTesting());
-      uiInjector.configureTestingModule({
-        providers: [
-          Serializer,
-          {provide: RenderStore, useValue: uiRenderStore},
-          DomRendererFactory2,
-          {provide: RendererFactory2, useExisting: DomRendererFactory2},
-        ]
-      });
-      const uiSerializer = uiInjector.get(Serializer);
-      const domRendererFactory = uiInjector.get(RendererFactory2);
-
-      // Worker side
-      lastCreatedRenderer = null!;
-
-      wwRenderStore = new RenderStore();
-
-      TestBed.configureTestingModule({
-        declarations: [MyComp2],
-        providers: [
-          Serializer,
-          {provide: RenderStore, useValue: wwRenderStore},
-          {
-            provide: RendererFactory2,
-            useFactory: (wwSerializer: Serializer) => createWebWorkerRendererFactory2(
-                wwSerializer, uiSerializer, domRendererFactory, uiRenderStore, wwRenderStore),
-            deps: [Serializer],
-          },
-        ],
-      });
-    });
-
-    function getRenderElement(workerEl: any): any {
-      const id = wwRenderStore.serialize(workerEl)!;
-      return uiRenderStore.deserialize(id);
-    }
-
-    it('should update text nodes', () => {
-      const fixture =
-          TestBed.overrideTemplate(MyComp2, '<div>{{ctxProp}}</div>').createComponent(MyComp2);
-      const renderEl = getRenderElement(fixture.nativeElement);
-      expect(renderEl).toHaveText('');
-
-      fixture.componentInstance.ctxProp = 'Hello World!';
-      fixture.detectChanges();
-      expect(renderEl).toHaveText('Hello World!');
-    });
-
-    modifiedInIvy('DebugElements are not supported on web-worker')
-        .it('should update any element property/attributes/class/style(s) independent of the compilation on the root element and other elements',
-            () => {
-              const fixture =
-                  TestBed.overrideTemplate(MyComp2, '<input [title]="y" style="position:absolute">')
-                      .createComponent(MyComp2);
-
-              const checkSetters = (componentRef: ComponentRef<any>, workerEl: any) => {
-                expect(lastCreatedRenderer).not.toBeNull();
-
-                const el = getRenderElement(workerEl);
-                lastCreatedRenderer.setProperty(workerEl, 'tabIndex', 1);
-                expect(el.tabIndex).toEqual(1);
-
-                lastCreatedRenderer.addClass(workerEl, 'a');
-                expect(hasClass(el, 'a')).toBe(true);
-
-                lastCreatedRenderer.removeClass(workerEl, 'a');
-                expect(hasClass(el, 'a')).toBe(false);
-
-                lastCreatedRenderer.setStyle(workerEl, 'width', '10px');
-                expect(el.style['width']).toEqual('10px');
-
-                lastCreatedRenderer.removeStyle(workerEl, 'width');
-                expect(el.style['width']).toEqual('');
-
-                lastCreatedRenderer.setAttribute(workerEl, 'someattr', 'someValue');
-                expect(el.getAttribute('someattr')).toEqual('someValue');
-              };
-
-              // root element
-              checkSetters(fixture.componentRef, fixture.nativeElement);
-              // nested elements
-              checkSetters(fixture.componentRef, fixture.debugElement.children[0].nativeElement);
-            });
-
-    it('should update any template comment property/attributes', () => {
-      const fixture =
-          TestBed.overrideTemplate(MyComp2, '<ng-container *ngIf="ctxBoolProp"></ng-container>')
-              .createComponent(MyComp2);
-      fixture.componentInstance.ctxBoolProp = true;
-      fixture.detectChanges();
-      const el = getRenderElement(fixture.nativeElement);
-      expect(el.innerHTML).toContain('"ng-reflect-ng-if": "true"');
-    });
-
-    it('should add and remove fragments', () => {
-      const fixture =
-          TestBed
-              .overrideTemplate(MyComp2, '<ng-container *ngIf="ctxBoolProp">hello</ng-container>')
-              .createComponent(MyComp2);
-
-      const rootEl = getRenderElement(fixture.nativeElement);
-      expect(rootEl).toHaveText('');
-
-      fixture.componentInstance.ctxBoolProp = true;
-      fixture.detectChanges();
-      expect(rootEl).toHaveText('hello');
-
-      fixture.componentInstance.ctxBoolProp = false;
-      fixture.detectChanges();
-      expect(rootEl).toHaveText('');
-    });
-
-    if (getDOM().supportsDOMEvents()) {
-      modifiedInIvy('DebugElements are not supported on web-worker')
-          .it('should listen to events', () => {
-            const fixture = TestBed.overrideTemplate(MyComp2, '<input (change)="ctxNumProp = 1">')
-                                .createComponent(MyComp2);
-
-            const el = fixture.debugElement.children[0];
-            dispatchEvent(getRenderElement(el.nativeElement), 'change');
-            expect(fixture.componentInstance.ctxNumProp).toBe(1);
-
-            fixture.destroy();
-          });
-    }
-  });
-}
-
-@Component({selector: 'my-comp'})
-class MyComp2 {
-  ctxProp = 'initial value';
-  ctxNumProp = 0;
-  ctxBoolProp = false;
-}
-
-function createWebWorkerBrokerFactory(
-    messageBuses: PairedMessageBuses, wwSerializer: Serializer, uiSerializer: Serializer,
-    domRendererFactory: DomRendererFactory2,
-    uiRenderStore: RenderStore): ClientMessageBrokerFactory {
-  const uiMessageBus = messageBuses.ui;
-  const wwMessageBus = messageBuses.worker;
-
-  // set up the worker side
-  const wwBrokerFactory = new (ClientMessageBrokerFactory as any)(wwMessageBus, wwSerializer);
-
-  // set up the ui side
-  const uiBrokerFactory = new (ServiceMessageBrokerFactory as any)(uiMessageBus, uiSerializer);
-  const renderer = new MessageBasedRenderer2(
-      uiBrokerFactory, uiMessageBus, uiSerializer, uiRenderStore, domRendererFactory);
-  renderer.start();
-
-  return wwBrokerFactory;
-}
-
-function createWebWorkerRendererFactory2(
-    workerSerializer: Serializer, uiSerializer: Serializer, domRendererFactory: DomRendererFactory2,
-    uiRenderStore: RenderStore, workerRenderStore: RenderStore): RendererFactory2 {
-  const messageBuses = createPairedMessageBuses();
-  const brokerFactory = createWebWorkerBrokerFactory(
-      messageBuses, workerSerializer, uiSerializer, domRendererFactory, uiRenderStore);
-
-  const rendererFactory =
-      new RenderFactory(brokerFactory, messageBuses.worker, workerSerializer, workerRenderStore);
-
-  return rendererFactory;
-}
-
-class RenderFactory extends WebWorkerRendererFactory2 {
-  createRenderer(element: any, type: RendererType2|null): Renderer2 {
-    lastCreatedRenderer = super.createRenderer(element, type);
-    return lastCreatedRenderer;
-  }
-}
-
-function isOldIE() {
-  // note that this only applies to older IEs (not edge)
-  return (window as any).document['documentMode'] ? true : false;
-}
diff --git a/packages/platform-webworker/test/web_workers/worker/spies.ts b/packages/platform-webworker/test/web_workers/worker/spies.ts
deleted file mode 100644
index c2b6b27f51..0000000000
--- a/packages/platform-webworker/test/web_workers/worker/spies.ts
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * @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.io/license
- */
-
-import {SpyObject} from '@angular/core/testing/src/testing_internal';
-import {ClientMessageBroker} from '@angular/platform-webworker/src/web_workers/shared/client_message_broker';
-
-export class SpyMessageBroker extends SpyObject {
-  constructor() {
-    super(ClientMessageBroker);
-  }
-}
diff --git a/packages/tsconfig.json b/packages/tsconfig.json
index 82b7c712a7..36e81fb949 100644
--- a/packages/tsconfig.json
+++ b/packages/tsconfig.json
@@ -47,10 +47,6 @@
     "http/**",
     "language-service/test/project",
     "platform-server/integrationtest",
-    // The webworker packages have deprecated and are not made compatible with the
-    // strict flag. Until these packages are removed, we exclude them here.
-    "platform-webworker/**",
-    "platform-webworker-dynamic/**",
     "router/test/aot_ngsummary_test"
   ]
 }
diff --git a/scripts/release/post-check b/scripts/release/post-check
index 7fdcf415e9..226b98c1da 100755
--- a/scripts/release/post-check
+++ b/scripts/release/post-check
@@ -7,7 +7,7 @@
 mkdir tmp
 cd tmp
 npm init -y
-npm install typescript@~3.8.3 rxjs@^6.5.3 zone.js@~0.10.3 @bazel/typescript@^1.0.0 rollup@^1.20.0 rollup-plugin-commonjs@^9.0.0 rollup-plugin-node-resolve@^4.2.0 rollup-plugin-sourcemaps@0.4.0 @angular/{animations,bazel,common,compiler,compiler-cli,core,elements,forms,language-service,localize,platform-browser,platform-browser-dynamic,platform-server,platform-webworker,platform-webworker-dynamic,router,service-worker,upgrade} --save
+npm install typescript@~3.8.3 rxjs@^6.5.3 zone.js@~0.10.3 @bazel/typescript@^1.0.0 rollup@^1.20.0 rollup-plugin-commonjs@^9.0.0 rollup-plugin-node-resolve@^4.2.0 rollup-plugin-sourcemaps@0.4.0 @angular/{animations,bazel,common,compiler,compiler-cli,core,elements,forms,language-service,localize,platform-browser,platform-browser-dynamic,platform-server,router,service-worker,upgrade} --save
 cd ..
 rm -rf tmp
 
diff --git a/scripts/release/post-check-next b/scripts/release/post-check-next
index 42b830965f..a0cde053e8 100755
--- a/scripts/release/post-check-next
+++ b/scripts/release/post-check-next
@@ -7,7 +7,7 @@
 mkdir tmp
 cd tmp
 npm init -y
-npm install typescript@~3.8.3 rxjs@^6.5.3 zone.js@~0.10.3 @bazel/typescript@^1.0.0 rollup@^1.20.0 rollup-plugin-commonjs@^9.0.0 rollup-plugin-node-resolve@^4.2.0 rollup-plugin-sourcemaps@0.4.0 @angular/{animations,bazel,common,compiler,compiler-cli,core,elements,forms,language-service,localize,platform-browser,platform-browser-dynamic,platform-server,platform-webworker,platform-webworker-dynamic,router,service-worker,upgrade}@next --save
+npm install typescript@~3.8.3 rxjs@^6.5.3 zone.js@~0.10.3 @bazel/typescript@^1.0.0 rollup@^1.20.0 rollup-plugin-commonjs@^9.0.0 rollup-plugin-node-resolve@^4.2.0 rollup-plugin-sourcemaps@0.4.0 @angular/{animations,bazel,common,compiler,compiler-cli,core,elements,forms,language-service,localize,platform-browser,platform-browser-dynamic,platform-server,router,service-worker,upgrade}@next --save
 cd ..
 rm -rf tmp
 
diff --git a/test-main.js b/test-main.js
index 4321c86442..7cc5f3323d 100644
--- a/test-main.js
+++ b/test-main.js
@@ -66,8 +66,6 @@ System.config({
     '@angular/platform-browser-dynamic': {main: 'index.js', defaultExtension: 'js'},
     '@angular/platform-server/testing': {main: 'index.js', defaultExtension: 'js'},
     '@angular/platform-server': {main: 'index.js', defaultExtension: 'js'},
-    '@angular/platform-webworker': {main: 'index.js', defaultExtension: 'js'},
-    '@angular/platform-webworker-dynamic': {main: 'index.js', defaultExtension: 'js'},
     '@angular/private/testing': {main: 'index.js', defaultExtension: 'js'},
     '@angular/elements': {main: 'index.js', defaultExtension: 'js'},
     'rxjs/ajax': {main: 'index.js', defaultExtension: 'js'},
diff --git a/tools/defaults.bzl b/tools/defaults.bzl
index b99e371f4f..f52af51875 100644
--- a/tools/defaults.bzl
+++ b/tools/defaults.bzl
@@ -41,8 +41,6 @@ ANGULAR_SCOPED_PACKAGES = ["@angular/%s" % p for p in [
     # Current plan for Angular v8 is to not include @angular/http in ng update
     # "http",
     "platform-server",
-    "platform-webworker",
-    "platform-webworker-dynamic",
     "upgrade",
     "router",
     "language-service",