diff --git a/src/compiler/core.ts b/src/compiler/core.ts
index 6ebeff961f499..298622e0cedd2 100644
--- a/src/compiler/core.ts
+++ b/src/compiler/core.ts
@@ -12,7 +12,7 @@ import {
 } from "./_namespaces/ts";
 
 /** @internal */
-export const emptyArray: never[] = [] as never[];
+export const emptyArray: never[] = Object.freeze([]) as never[];
 /** @internal */
 export const emptyMap: ReadonlyMap<never, never> = new Map<never, never>();
 /** @internal */
diff --git a/src/server/utilitiesPublic.ts b/src/server/utilitiesPublic.ts
index ac8e0f3c131c3..b90091e8f2292 100644
--- a/src/server/utilitiesPublic.ts
+++ b/src/server/utilitiesPublic.ts
@@ -19,7 +19,7 @@ export enum LogLevel {
     verbose,
 }
 
-export const emptyArray: SortedReadonlyArray<never> = createSortedArray<never>();
+export const emptyArray: SortedReadonlyArray<never> = Object.freeze(createSortedArray<never>());
 
 export interface Logger {
     close(): void;