JSON（节点/表达式）和JSON数组中的自定义“类型”

I recently had to convert a project that had a lot of work done with ASP.NET Core 1.0 to Node.js. I'm absolutely out of my comfort zone, knowing hardly anything about JavaScript and having had the good life of ASP serializing C# classes for me without me having to do the JSON myself. Node wants me to do the JSON myself which I am having a bad time with.I recently had to convert a project that had a