If you have invalid xml and run tns run ios or android the app will crash and an error will be shown

1. Create project
2. Change the xml to be invalid (e.g. "")
3. Run "tns run ios" or "tns run android"
   Actual: The app will crash and an error will be shown in console

1   0x109ad6d4b NativeScript::FFICallback<NativeScript::ObjCMethodCallback>::ffiClosureCallback(ffi_cif*, void*, void**, void*)
2   0x10a17a28e ffi_closure_unix64_inner
3   0x10a17abd2 ffi_closure_unix64
4   0x10aea03c3 -[UIViewController __viewWillAppear😏
5   0x10aea1b12 -[UIViewController viewWillMoveToWindow😏
6   0x10ada56d2 -[UIView(Hierarchy) _willMoveToWindow:withAncestorView😏
7   0x10adb6442 -[UIView(Internal) _addSubview:positioned:relativeTo😏
8   0x10ada4cf8 -[UIView(Hierarchy) addSubview😏
9   0x10ad62c6f -[UIWindow addRootViewControllerViewIfPossible]
10  0x10ad63070 -[UIWindow _setHidden:forced😏
11  0x10ad75ebe -[UIWindow makeKeyAndVisible]
12  0x10a17aa2d ffi_call_unix64
13  0x12799e490
file:///app/tns_modules/tns-core-modules/ui/builder/builder.js:196:56: JS ERROR Error: Building UI from XML. @file:///app/home/home-page.xml:13:5"

Expected: App not to crash and the red label on the device to be shown with the proper text

使用 XML 包含无效元素（例如 ）的项目复现，然后运行 tns run ios 和 tns run android。从 tns-core-modules/ui/builder/builder.js:196 开始，并将控制台错误与设备的预期行为进行比较；当应用不崩溃且设备显示正确的红色错误标签时，即表示完成。