fix(core): update

test/ts_web/index.ts

@@ -1,3 +1,18 @@
-const myConst = 'hello';
+const myConst: string = 'hello';
+
+function sealed(constructor: Function) {
+  Object.seal(constructor);
+  Object.seal(constructor.prototype);
+}
+
+@sealed
+class BugReport {
+  type = "report";
+  title: string;
+
+  constructor(t: string) {
+    this.title = t;
+  }
+}
 
 console.log(myConst);