解决方法
这显然是AOT编译器使用的NgFactory文件的新名称.在此页面上搜索NgFactory
Ahead-of-Time Compilation
提取：
After ngc completes,look for a collection of NgFactory files in the aot folder. The aot folder is the directory specified as genDir in tsconfig-aot.json.
These factory files are essential to the compiled application. Each component factory creates an instance of the component at runtime by combining the original class file and a JavaScript representation of the component’s template. Note that the original component class is still referenced internally by the generated factory.
