feat: trait state patching transformation

packages/entity/trait.js

@@ -44,11 +44,12 @@ export class Trait extends Synchronized {
       return;
     }
     const stateKey = step.path.substr(1);
+    const value = this.transformPatchValue(stateKey, step.value);
     if (stateKey in this.entity) {
-      this.entity[stateKey] = step.value;
+      this.entity[stateKey] = value;
     }
     else {
-      this.state = this.state.set(stateKey, step.value);
+      this.state = this.state.set(stateKey, value);
     }
   }
 
@@ -59,6 +60,10 @@ export class Trait extends Synchronized {
     };
   }
 
+  transformPatchValue(key, value) {
+    return value;
+  }
+
   static contextType() {
     return {};
   }