diff --git a/packages/compiler-cli/src/ngtsc/shims/src/host.ts b/packages/compiler-cli/src/ngtsc/shims/src/host.ts
index 91e06c6208..c5ee736033 100644
--- a/packages/compiler-cli/src/ngtsc/shims/src/host.ts
+++ b/packages/compiler-cli/src/ngtsc/shims/src/host.ts
@@ -32,6 +32,13 @@ export interface ShimGenerator {
  */
 export class GeneratedShimsHostWrapper implements ts.CompilerHost {
   constructor(private delegate: ts.CompilerHost, private shimGenerators: ShimGenerator[]) {
+    if (delegate.resolveModuleNames !== undefined) {
+      this.resolveModuleNames =
+          (moduleNames: string[], containingFile: string, reusedNames?: string[],
+           redirectedReference?: ts.ResolvedProjectReference) =>
+              delegate.resolveModuleNames !(
+                  moduleNames, containingFile, reusedNames, redirectedReference);
+    }
     if (delegate.resolveTypeReferenceDirectives) {
       // Backward compatibility with TypeScript 2.9 and older since return
       // type has changed from (ts.ResolvedTypeReferenceDirective | undefined)[]
@@ -50,6 +57,10 @@ export class GeneratedShimsHostWrapper implements ts.CompilerHost {
     }
   }
 
+  resolveModuleNames?:
+      (moduleNames: string[], containingFile: string, reusedNames?: string[],
+       redirectedReference?: ts.ResolvedProjectReference) => (ts.ResolvedModule | undefined)[];
+
   resolveTypeReferenceDirectives?:
       (names: string[], containingFile: string) => ts.ResolvedTypeReferenceDirective[];
 
diff --git a/packages/compiler-cli/src/ngtsc/shims/test/host_spec.ts b/packages/compiler-cli/src/ngtsc/shims/test/host_spec.ts
new file mode 100644
index 0000000000..e047855eed
--- /dev/null
+++ b/packages/compiler-cli/src/ngtsc/shims/test/host_spec.ts
@@ -0,0 +1,37 @@
+/**
+ * @license
+ * Copyright Google Inc. 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 * as ts from 'typescript';
+
+import {GeneratedShimsHostWrapper} from '../src/host';
+
+describe('shim host', () => {
+  it('should not have optional methods when delegate does not have them', function() {
+    const delegate = {} as unknown as ts.CompilerHost;
+    const shimsHost = new GeneratedShimsHostWrapper(delegate, []);
+
+    expect(shimsHost.resolveModuleNames).not.toBeDefined();
+    expect(shimsHost.resolveTypeReferenceDirectives).not.toBeDefined();
+    expect(shimsHost.directoryExists).not.toBeDefined();
+    expect(shimsHost.getDirectories).not.toBeDefined();
+  });
+
+  it('should delegate optional methods if available', function() {
+    const delegate = {
+      resolveModuleNames: () => undefined,
+      resolveTypeReferenceDirectives: () => undefined,
+      directoryExists: () => undefined,
+      getDirectories: () => undefined,
+    } as unknown as ts.CompilerHost;
+    const shimsHost = new GeneratedShimsHostWrapper(delegate, []);
+
+    expect(shimsHost.resolveModuleNames).toBeDefined();
+    expect(shimsHost.resolveTypeReferenceDirectives).toBeDefined();
+    expect(shimsHost.directoryExists).toBeDefined();
+    expect(shimsHost.getDirectories).toBeDefined();
+  });
+});