fix(signals): remove usage of SIGNAL from @angular/core/primitives/signals package (#4530)

Author: brandonroberts

modules/signals/spec/signal-store.spec.ts

@@ -47,7 +47,6 @@ describe('signalStore', () => {
 
       expect(isSignal(stateSource)).toBe(true);
       expect(stateSource()).toEqual({ foo: 'bar' });
-      expect(typeof (stateSource as any).update === 'undefined').toBe(true);
     });
 
     it('creates a store with readonly state source when protectedState option is true', () => {
@@ -60,7 +59,6 @@ describe('signalStore', () => {
 
       expect(isSignal(stateSource)).toBe(true);
       expect(stateSource()).toEqual({ foo: 'bar' });
-      expect(typeof (stateSource as any).update === 'undefined').toBe(true);
     });
 
     it('creates a store with writable state source when protectedState option is false', () => {

modules/signals/src/signal-store.ts

@@ -1357,10 +1357,7 @@ export function signalStore(
       const { stateSignals, computedSignals, methods, hooks } = innerStore;
       const storeMembers = { ...stateSignals, ...computedSignals, ...methods };
 
-      (this as any)[STATE_SOURCE] =
-        config.protectedState === false
-          ? innerStore[STATE_SOURCE]
-          : innerStore[STATE_SOURCE].asReadonly();
+      (this as any)[STATE_SOURCE] = innerStore[STATE_SOURCE];
 
       for (const key in storeMembers) {
         (this as any)[key] = storeMembers[key];

modules/signals/src/state-source.ts

@@ -7,10 +7,9 @@ import {
   untracked,
   WritableSignal,
 } from '@angular/core';
-import { SIGNAL } from '@angular/core/primitives/signals';
 import { Prettify } from './ts-helpers';
 
-const STATE_WATCHERS = new WeakMap<object, Array<StateWatcher<any>>>();
+const STATE_WATCHERS = new WeakMap<Signal<object>, Array<StateWatcher<any>>>();
 
 export const STATE_SOURCE = Symbol('STATE_SOURCE');
 
@@ -79,7 +78,7 @@ export function watchState<State extends object>(
 function getWatchers<State extends object>(
   stateSource: StateSource<State>
 ): Array<StateWatcher<State>> {
-  return STATE_WATCHERS.get(stateSource[STATE_SOURCE][SIGNAL] as object) || [];
+  return STATE_WATCHERS.get(stateSource[STATE_SOURCE]) || [];
 }
 
 function notifyWatchers<State extends object>(
@@ -98,10 +97,7 @@ function addWatcher<State extends object>(
   watcher: StateWatcher<State>
 ): void {
   const watchers = getWatchers(stateSource);
-  STATE_WATCHERS.set(stateSource[STATE_SOURCE][SIGNAL] as object, [
-    ...watchers,
-    watcher,
-  ]);
+  STATE_WATCHERS.set(stateSource[STATE_SOURCE], [...watchers, watcher]);
 }
 
 function removeWatcher<State extends object>(
@@ -110,7 +106,7 @@ function removeWatcher<State extends object>(
 ): void {
   const watchers = getWatchers(stateSource);
   STATE_WATCHERS.set(
-    stateSource[STATE_SOURCE][SIGNAL] as object,
+    stateSource[STATE_SOURCE],
     watchers.filter((w) => w !== watcher)
   );
 }