fix: update react custom plugin count handling logic position (#173)

Fixes #167 

### Changes

Update to execute count increment/decrement before history push.

The pages affected by this change are as follows:
-
https://tanstack.com/devtools/latest/docs/framework/react/guides/custom-plugins
-
https://tanstack.com/devtools/latest/docs/framework/react/examples/custom-devtools

Author: TakhyunKim

docs/framework/react/guides/custom-plugins.md

@@ -20,12 +20,12 @@ export function createCounter() {
   return {
     getCount: () => count,
     increment: () => {
-      history.push(count)
       count++
+      history.push(count)
     },
     decrement: () => {
-      history.push(count)
       count--
+      history.push(count)
     },
   };
 }
@@ -82,22 +82,22 @@ export function createCounter() {
   return {
     getCount: () => count,
     increment: () => {
-      history.push(count)
       count++
+      history.push(count)
 
       // The emit eventSuffix must match that of the EventMap defined in eventClient.ts
       DevtoolsEventClient.emit('counter-state', {
-        count: count,
-        history: history,
+        count,
+        history,
       })
     },
     decrement: () => {
-      history.push(count)
       count--
+      history.push(count)
 
       DevtoolsEventClient.emit('counter-state', {
-        count: count,
-        history: history,
+        count,
+        history,
       })
     },
   }

examples/react/custom-devtools/src/counter.ts

@@ -7,20 +7,22 @@ export function createCounter() {
   return {
     getCount: () => count,
     increment: () => {
+      count++
       history.push(count)
 
       // The emit eventSuffix must match that of the EventMap defined in eventClient.ts
       DevtoolsEventClient.emit('counter-state', {
-        count: count++,
-        history: history,
+        count,
+        history,
       })
     },
     decrement: () => {
+      count--
       history.push(count)
 
       DevtoolsEventClient.emit('counter-state', {
-        count: count--,
-        history: history,
+        count,
+        history,
       })
     },
   }