refactor(core): tree-shake PROPAGATION_STOPPED_SYMBOL (#61004)

arturovt · AndrewKushnir · commit 075145ef939f · 2025-04-30T12:38:45.000-07:00
Adds `__PURE__` annotations to `PROPAGATION_STOPPED_SYMBOL` to enable tree-shaking, even if is is not referenced. This variable is not dropped when Angular is imported from a module that has `sideEffects` set to `true`. PR Close #61004
diff --git a/packages/core/primitives/event-dispatch/src/event_dispatcher.ts b/packages/core/primitives/event-dispatch/src/event_dispatcher.ts
@@ -19,7 +19,7 @@ import {Restriction} from './restriction';
 export type Replayer = (eventInfoWrappers: Event[]) => void;
 
 /** An internal symbol used to indicate whether propagation should be stopped or not. */
-export const PROPAGATION_STOPPED_SYMBOL = Symbol.for('propagationStopped');
+export const PROPAGATION_STOPPED_SYMBOL = /* @__PURE__ */ Symbol.for('propagationStopped');
 
 /** Extra event phases beyond what the browser provides. */
 export const EventPhase = {
