diff --git a/packages/core/src/core_render3_private_export.ts b/packages/core/src/core_render3_private_export.ts
index e220f346c16..56ac6c3cbde 100644
--- a/packages/core/src/core_render3_private_export.ts
+++ b/packages/core/src/core_render3_private_export.ts
@@ -165,4 +165,17 @@ export {
   ElementContext as ɵElementContext,
   getElementContext as ɵgetElementContext
 } from './render3/element_discovery';
+
+// we reexport these symbols just so that they are retained during the dead code elimination
+// performed by rollup while it's creating fesm files.
+//
+// no code actually imports these symbols from the @angular/core entry point
+export {
+  R3_COMPILE_COMPONENT__POST_NGCC__ as ɵR3_COMPILE_COMPONENT__POST_NGCC__,
+  R3_COMPILE_DIRECTIVE__POST_NGCC__ as ɵR3_COMPILE_DIRECTIVE__POST_NGCC__,
+  R3_COMPILE_INJECTABLE__POST_NGCC__ as ɵR3_COMPILE_INJECTABLE__POST_NGCC__,
+  R3_COMPILE_NGMODULE__POST_NGCC__ as ɵR3_COMPILE_NGMODULE__POST_NGCC__,
+  R3_COMPILE_PIPE__POST_NGCC__ as ɵR3_COMPILE_PIPE__POST_NGCC__,
+  ivyEnable__POST_NGCC__ as ɵivyEnable__POST_NGCC__
+} from './ivy_switch_legacy';
 // clang-format on
diff --git a/packages/core/src/ivy_switch_legacy.ts b/packages/core/src/ivy_switch_legacy.ts
index e6b5c3cbf45..58c442c2487 100644
--- a/packages/core/src/ivy_switch_legacy.ts
+++ b/packages/core/src/ivy_switch_legacy.ts
@@ -20,12 +20,12 @@ function noop() {}
 
 export interface DirectiveCompiler { (type: any, meta: any): void; }
 
-const R3_COMPILE_COMPONENT__POST_NGCC__ = ivyOn.R3_COMPILE_COMPONENT;
-const R3_COMPILE_DIRECTIVE__POST_NGCC__ = ivyOn.R3_COMPILE_DIRECTIVE;
-const R3_COMPILE_INJECTABLE__POST_NGCC__ = ivyOn.R3_COMPILE_INJECTABLE;
-const R3_COMPILE_NGMODULE__POST_NGCC__ = ivyOn.R3_COMPILE_NGMODULE;
-const R3_COMPILE_PIPE__POST_NGCC__ = ivyOn.R3_COMPILE_PIPE;
-const ivyEnable__POST_NGCC__ = ivyOn.ivyEnabled;
+export const R3_COMPILE_COMPONENT__POST_NGCC__: DirectiveCompiler = ivyOn.R3_COMPILE_COMPONENT;
+export const R3_COMPILE_DIRECTIVE__POST_NGCC__: DirectiveCompiler = ivyOn.R3_COMPILE_DIRECTIVE;
+export const R3_COMPILE_INJECTABLE__POST_NGCC__: DirectiveCompiler = ivyOn.R3_COMPILE_INJECTABLE;
+export const R3_COMPILE_NGMODULE__POST_NGCC__: DirectiveCompiler = ivyOn.R3_COMPILE_NGMODULE;
+export const R3_COMPILE_PIPE__POST_NGCC__: DirectiveCompiler = ivyOn.R3_COMPILE_PIPE;
+export const ivyEnable__POST_NGCC__: boolean = ivyOn.ivyEnabled;
 
 const compileComponentQueue: any[] = [];
 const compileDirectiveQueue: any[] = [];