feat(v3): improve diff data

packages/uni-app-plus/dist/index.v3.js

@@ -9102,15 +9102,21 @@ var serviceContext = (function () {
     data[k] = v;
   }
 
-  function diffObject (id, newObj, oldObj, result) {
-    let key, cur, old;
+  function diffObject (newObj, oldObj) {
+    let result, key, cur, old;
     for (key in newObj) {
       cur = newObj[key];
       old = oldObj[key];
       if (old !== cur) {
-        setResult(result[id] || (result[id] = {}), key, cur);
+        if (key === 's' && isPlainObject(cur) && isPlainObject(old)) {
+          const style = diffObject(cur, old);
+          style && setResult(result || (result = Object.create(null)), 's', style);
+        } else {
+          setResult(result || (result = Object.create(null)), key, cur);
+        }
       }
     }
+    return result
   }
 
   function diff (newData, oldData, result) {
@@ -9122,7 +9128,8 @@ var serviceContext = (function () {
         setResult(result, id, cur);
         continue
       }
-      diffObject(id, cur, old, result);
+      const idObj = diffObject(cur, old);
+      idObj && setResult(result, id, idObj);
     }
     return result
   }

src/platforms/app-plus/service/framework/plugins/diff.js

+import {
+  isPlainObject
+} from 'uni-shared'
+
 function setResult (data, k, v) {
   data[k] = v
 }
 
-function diffObject (id, newObj, oldObj, result) {
-  let key, cur, old
+function diffObject (newObj, oldObj) {
+  let result, key, cur, old
   for (key in newObj) {
     cur = newObj[key]
     old = oldObj[key]
     if (old !== cur) {
-      setResult(result[id] || (result[id] = {}), key, cur)
+      if (key === 's' && isPlainObject(cur) && isPlainObject(old)) {
+        const style = diffObject(cur, old)
+        style && setResult(result || (result = Object.create(null)), 's', style)
+      } else {
+        setResult(result || (result = Object.create(null)), key, cur)
+      }
     }
   }
+  return result
 }
 
 export function diff (newData, oldData, result) {
@@ -22,7 +32,8 @@ export function diff (newData, oldData, result) {
       setResult(result, id, cur)
       continue
     }
-    diffObject(id, cur, old, result)
+    const idObj = diffObject(cur, old)
+    idObj && setResult(result, id, idObj)
   }
   return result
 }