fix(types,testing): tighten action context typing and update tests for stricter TypeScript checks

test/test.ts

@@ -1,4 +1,4 @@
-import { expect, tap } from '@push.rocks/tapbundle';
+import { expect, tap } from '@git.zone/tstest/tapbundle';
 import * as smartstate from '../ts/index.js';
 
 type TMyStateParts = 'testStatePart';
@@ -39,7 +39,7 @@ tap.test('should select something', async () => {
 tap.test('should dispatch a state action', async (tools) => {
   const done = tools.defer();
   const addFavourite = testStatePart.createAction<string>(async (statePart, payload) => {
-    const currentState = statePart.getState();
+    const currentState = statePart.getState()!;
     return {
       ...currentState,
       currentFavorites: [...currentState.currentFavorites, payload],
@@ -51,9 +51,9 @@ tap.test('should dispatch a state action', async (tools) => {
     })
     .then(() => {
       done.resolve();
-    });
+  });
   await testStatePart.dispatchAction(addFavourite, 'my favourite things');
-  expect(testStatePart.getState().currentFavorites).toContain('my favourite things');
+  expect(testStatePart.getState()!.currentFavorites).toContain('my favourite things');
   await done.promise;
 });