diff --git a/packages/compiler-cli/BUILD.bazel b/packages/compiler-cli/BUILD.bazel
index ddb6d53e4e3..149c9f57790 100644
--- a/packages/compiler-cli/BUILD.bazel
+++ b/packages/compiler-cli/BUILD.bazel
@@ -34,6 +34,8 @@ esbuild(
         "//packages/compiler-cli/private:bazel.ts",
         "//packages/compiler-cli/private:localize.ts",
         "//packages/compiler-cli/private:migrations.ts",
+        "//packages/compiler-cli/ngcc:src/locking/lock_file_with_child_process/ngcc_lock_unlocker.ts",
+        "//packages/compiler-cli/ngcc:src/execution/cluster/ngcc_cluster_worker.ts",
     ],
     external = [
         "@angular/compiler",
diff --git a/packages/compiler-cli/ngcc/src/execution/cluster/master.ts b/packages/compiler-cli/ngcc/src/execution/cluster/master.ts
index 9024a96ff78..f8d8929757d 100644
--- a/packages/compiler-cli/ngcc/src/execution/cluster/master.ts
+++ b/packages/compiler-cli/ngcc/src/execution/cluster/master.ts
@@ -44,7 +44,7 @@ export class ClusterMaster {
     }
 
     // Set the worker entry-point
-    cluster.setupMaster({exec: this.fileSystem.resolve(__dirname, 'worker.js')});
+    cluster.setupMaster({exec: this.fileSystem.resolve(__dirname, 'ngcc_cluster_worker.js')});
 
     this.taskQueue = analyzeEntryPoints();
     this.onTaskCompleted = createTaskCompletedCallback(this.taskQueue);
diff --git a/packages/compiler-cli/ngcc/src/execution/cluster/ngcc_cluster_worker.ts b/packages/compiler-cli/ngcc/src/execution/cluster/ngcc_cluster_worker.ts
new file mode 100644
index 00000000000..a7072fecaa8
--- /dev/null
+++ b/packages/compiler-cli/ngcc/src/execution/cluster/ngcc_cluster_worker.ts
@@ -0,0 +1,46 @@
+/**
+ * @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 {parseCommandLineOptions} from '../../command_line_options';
+import {getSharedSetup} from '../../ngcc_options';
+import {getCreateCompileFn} from '../create_compile_function';
+
+import {ClusterWorkerPackageJsonUpdater} from './package_json_updater';
+import {startWorker} from './worker';
+
+// Cluster worker entry point
+(async () => {
+  process.title = 'ngcc (worker)';
+
+  try {
+    const {
+      logger,
+      pathMappings,
+      enableI18nLegacyMessageIdFormat,
+      fileSystem,
+      tsConfig,
+      getFileWriter,
+    } = getSharedSetup(parseCommandLineOptions(process.argv.slice(2)));
+
+    // NOTE: To avoid file corruption, `ngcc` invocation only creates _one_ instance of
+    // `PackageJsonUpdater` that actually writes to disk (across all processes).
+    // In cluster workers we use a `PackageJsonUpdater` that delegates to the cluster master.
+    const pkgJsonUpdater = new ClusterWorkerPackageJsonUpdater();
+    const fileWriter = getFileWriter(pkgJsonUpdater);
+
+    // The function for creating the `compile()` function.
+    const createCompileFn = getCreateCompileFn(
+        fileSystem, logger, fileWriter, enableI18nLegacyMessageIdFormat, tsConfig, pathMappings);
+
+    await startWorker(logger, createCompileFn);
+    process.exitCode = 0;
+  } catch (e) {
+    console.error(e.stack || e.message);
+    process.exit(1);
+  }
+})();
diff --git a/packages/compiler-cli/ngcc/src/execution/cluster/worker.ts b/packages/compiler-cli/ngcc/src/execution/cluster/worker.ts
index b74e849dbf3..32b984b2ecd 100644
--- a/packages/compiler-cli/ngcc/src/execution/cluster/worker.ts
+++ b/packages/compiler-cli/ngcc/src/execution/cluster/worker.ts
@@ -10,50 +10,12 @@
 import * as cluster from 'cluster';
 
 import {Logger} from '../../../../src/ngtsc/logging';
-import {parseCommandLineOptions} from '../../command_line_options';
-import {getSharedSetup} from '../../ngcc_options';
 import {CreateCompileFn} from '../api';
-import {getCreateCompileFn} from '../create_compile_function';
 import {stringifyTask} from '../tasks/utils';
 
 import {MessageToWorker} from './api';
-import {ClusterWorkerPackageJsonUpdater} from './package_json_updater';
 import {sendMessageToMaster} from './utils';
 
-// Cluster worker entry point
-if (require.main === module) {
-  (async () => {
-    process.title = 'ngcc (worker)';
-
-    try {
-      const {
-        logger,
-        pathMappings,
-        enableI18nLegacyMessageIdFormat,
-        fileSystem,
-        tsConfig,
-        getFileWriter,
-      } = getSharedSetup(parseCommandLineOptions(process.argv.slice(2)));
-
-      // NOTE: To avoid file corruption, `ngcc` invocation only creates _one_ instance of
-      // `PackageJsonUpdater` that actually writes to disk (across all processes).
-      // In cluster workers we use a `PackageJsonUpdater` that delegates to the cluster master.
-      const pkgJsonUpdater = new ClusterWorkerPackageJsonUpdater();
-      const fileWriter = getFileWriter(pkgJsonUpdater);
-
-      // The function for creating the `compile()` function.
-      const createCompileFn = getCreateCompileFn(
-          fileSystem, logger, fileWriter, enableI18nLegacyMessageIdFormat, tsConfig, pathMappings);
-
-      await startWorker(logger, createCompileFn);
-      process.exitCode = 0;
-    } catch (e) {
-      console.error(e.stack || e.message);
-      process.exit(1);
-    }
-  })();
-}
-
 export async function startWorker(logger: Logger, createCompileFn: CreateCompileFn): Promise<void> {
   if (cluster.isMaster) {
     throw new Error('Tried to run cluster worker on the master process.');
diff --git a/packages/compiler-cli/ngcc/src/execution/create_compile_function.ts b/packages/compiler-cli/ngcc/src/execution/create_compile_function.ts
index 3b2005d60c0..fb528a8ea02 100644
--- a/packages/compiler-cli/ngcc/src/execution/create_compile_function.ts
+++ b/packages/compiler-cli/ngcc/src/execution/create_compile_function.ts
@@ -15,6 +15,7 @@ import {ParsedConfiguration} from '../../../src/perform_compile';
 import {getEntryPointFormat} from '../packages/entry_point';
 import {makeEntryPointBundle} from '../packages/entry_point_bundle';
 import {createModuleResolutionCache, SharedFileCache} from '../packages/source_file_cache';
+import {Transformer} from '../packages/transformer';
 import {PathMappings} from '../path_mappings';
 import {FileWriter} from '../writing/file_writer';
 
@@ -29,7 +30,6 @@ export function getCreateCompileFn(
     enableI18nLegacyMessageIdFormat: boolean, tsConfig: ParsedConfiguration|null,
     pathMappings: PathMappings|undefined): CreateCompileFn {
   return (beforeWritingFiles, onTaskCompleted) => {
-    const {Transformer} = require('../packages/transformer');
     const transformer = new Transformer(fileSystem, logger, tsConfig);
     const sharedFileCache = new SharedFileCache(fileSystem);
     const moduleResolutionCache = createModuleResolutionCache(fileSystem);
diff --git a/packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/index.ts b/packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/index.ts
index feafea9d456..8a0c59a8a58 100644
--- a/packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/index.ts
+++ b/packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/index.ts
@@ -78,7 +78,7 @@ export class LockFileWithChildProcess implements LockFile {
         this.logger.level !== undefined ? this.logger.level.toString() : LogLevel.info.toString();
     const isWindows = process.platform === 'win32';
     const unlocker = fork(
-        __dirname + '/unlocker.js', [path, logLevel],
+        __dirname + '/ngcc_lock_unlocker.js', [path, logLevel],
         {detached: true, stdio: isWindows ? 'pipe' : 'inherit'});
     if (isWindows) {
       unlocker.stdout?.on('data', process.stdout.write.bind(process.stdout));
diff --git a/packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/unlocker.ts b/packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/ngcc_lock_unlocker.ts
similarity index 100%
rename from packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/unlocker.ts
rename to packages/compiler-cli/ngcc/src/locking/lock_file_with_child_process/ngcc_lock_unlocker.ts
diff --git a/packages/compiler-cli/ngcc/test/locking/lockfile_with_child_process/unlocker_spec.ts b/packages/compiler-cli/ngcc/test/locking/lockfile_with_child_process/unlocker_spec.ts
index 07ca1b59954..83b9bc5b4e4 100644
--- a/packages/compiler-cli/ngcc/test/locking/lockfile_with_child_process/unlocker_spec.ts
+++ b/packages/compiler-cli/ngcc/test/locking/lockfile_with_child_process/unlocker_spec.ts
@@ -11,7 +11,7 @@
 describe('unlocker', () => {
   it('should attach a handler to the `disconnect` event', () => {
     spyOn(process, 'on');
-    require('../../../src/locking/lock_file_with_child_process/unlocker');
+    require('../../../src/locking/lock_file_with_child_process/ngcc_lock_unlocker');
     // TODO: @JiaLiPassion, need to wait for @types/jasmine to handle the override case
     // https://github.com/DefinitelyTyped/DefinitelyTyped/issues/42455
     expect(process.on).toHaveBeenCalledWith('disconnect' as any, jasmine.any(Function));