docs: example and readme

README.md

@@ -26,10 +26,13 @@ const computeState = (state) => ({
 
 const useStore = create(
   computed(
-    (set) => ({
+    (set, get) => ({
       count: 1,
       inc: () => set((state) => ({ count: state.count + 1 })),
       dec: () => set((state) => ({ count: state.count - 1 })),
+      // get() function has access to ComputedStore
+      square: () => set(() => ({ count: get().countSq })),
+      root: () => set((state) => ({ count: Math.floor(Math.sqrt(state.count)) })),
     }),
     computeState
   )
@@ -62,6 +65,9 @@ const useStore = create<Store>()(
       count: 1,
       inc: () => set((state) => ({ count: state.count + 1 })),
       dec: () => set((state) => ({ count: state.count - 1 })),
+      // get() function has access to ComputedStore
+      square: () => set(() => ({ count: get().countSq })),
+      root: () => set((state) => ({ count: Math.floor(Math.sqrt(state.count)) })),
     }),
     computeState
   )
@@ -90,7 +96,7 @@ A fully-featured example can be found under the "example" directory.
 
 ## With Middleware
 
-Here's an example with middleware. Works as expected.
+Here's an example with the Immer middleware. Note that types may not be as you expect when using Immer, as it derives the SetState type from the output of GetState, where `zustand-computed` makes SetState only allow the regular Store and the GetState return both the store and the computed store.
 
 ```ts
 const useStore = create<Store>()(

example/src/App.tsx

@@ -25,20 +25,19 @@ function computeState(state: Store): ComputedStore {
 const useStore = create<Store>()(
   devtools(
     computed(
+      (set, get) => ({
+        count: 1,
+        inc: () =>
+          set((state) => {
+            // return { countSq: 1 } would error here; SetState does not include ComputedStore
+            return { count: state.count + 1 }
+          }),
+        dec: () => set((state) => ({ count: state.count - 1 })),
+        // the get() function has access to the computed store
+        square: () => set({ count: get().countSq }),
+        root: () => set({ count: Math.floor(Math.sqrt(get().count)) }),
+      }),
       computeState,
-      (set, get) =>
-        ({
-          count: 1,
-          inc: () =>
-            set((state) => {
-              // return { countSq: 1 } would error here; SetState does not include ComputedStore
-              return { count: state.count + 1 }
-            }),
-          dec: () => set((state) => ({ count: state.count - 1 })),
-          // the get() function has access to the computed store
-          square: () => set({ count: get().countSq }),
-          root: () => set({ count: Math.floor(Math.sqrt(get().count)) }),
-        }) satisfies Store,
     ),
   ),
 )