refactor: use standard prettier formatting

src/routes/sandbox/+page.svelte

@@ -1,43 +1,43 @@
 <script>
-  let ongoingRequest
-  let resolveRequest
-  let source
+  let ongoingRequest;
+  let resolveRequest;
+  let source;
   async function post(channel, args) {
     while (ongoingRequest) {
-      await ongoingRequest
+      await ongoingRequest;
     }
-    ongoingRequest = new Promise(resolve => {
-      resolveRequest = resolve
-      source.postMessage([channel, args], "*")
-    })
+    ongoingRequest = new Promise((resolve) => {
+      resolveRequest = resolve;
+      source.postMessage([channel, args], "*");
+    });
     ongoingRequest.then(() => {
-      ongoingRequest = undefined
-    })
-    return ongoingRequest
+      ongoingRequest = undefined;
+    });
+    return ongoingRequest;
   }
 
-  window.addEventListener("message", event => {
+  window.addEventListener("message", (event) => {
     if ("response" in event.data) {
-      resolveRequest(event.data.response)
+      resolveRequest(event.data.response);
     } else {
-      source = event.source
+      source = event.source;
 
-      var Action = event.data.actionCodes
+      var Action = event.data.actionCodes;
       Object.assign(
         Action,
         Object.fromEntries(
           Object.values(event.data.actionCodes)
-            .filter(it => !!it.id)
-            .map(it => [it.id, it]),
+            .filter((it) => !!it.id)
+            .map((it) => [it.id, it]),
         ),
-      )
+      );
 
-      var Chara = {}
+      var Chara = {};
       for (const fn of event.data.charaChannels) {
-        Chara[fn] = (...args) => post(fn, args)
+        Chara[fn] = (...args) => post(fn, args);
       }
 
-      eval(`(async function(){${event.data.script}})()`)
+      eval(`(async function(){${event.data.script}})()`);
     }
-  })
+  });
 </script>