diff --git a/packages/animations/browser/src/render/animation_driver.ts b/packages/animations/browser/src/render/animation_driver.ts
index 32cd21bd771..0dc61bd8899 100644
--- a/packages/animations/browser/src/render/animation_driver.ts
+++ b/packages/animations/browser/src/render/animation_driver.ts
@@ -47,7 +47,7 @@ export class NoopAnimationDriver implements AnimationDriver {
  * @publicApi
  */
 export abstract class AnimationDriver {
-  static NOOP: AnimationDriver = new NoopAnimationDriver();
+  static NOOP: AnimationDriver = /* @__PURE__ */ new NoopAnimationDriver();
 
   abstract validateStyleProperty(prop: string): boolean;
 
diff --git a/packages/animations/browser/src/render/special_cased_styles.ts b/packages/animations/browser/src/render/special_cased_styles.ts
index c2e012db9f5..c01076e85f0 100644
--- a/packages/animations/browser/src/render/special_cased_styles.ts
+++ b/packages/animations/browser/src/render/special_cased_styles.ts
@@ -44,7 +44,7 @@ export function packageNonAnimatableStyles(
  * `destroy()` is called then all styles will be removed.
  */
 export class SpecialCasedStyles {
-  static initialStylesByElement = new WeakMap<any, {[key: string]: any}>();
+  static initialStylesByElement = /* @__PURE__ */ new WeakMap<any, {[key: string]: any}>();
 
   private _state = SpecialCasedStylesState.Pending;
   private _initialStyles!: {[key: string]: any};