Add option to return objects as Maps to support ordered properties

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@jordanbtucker ya está trabajando en esto.

Desde el 28/8/2019.

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Descripción

enhancement :+1:

I understood that the json object is designed to be unordered, and json arrays will preserve order. So if I would like to preserve the order , then I should use list instead of object, but it is not convenient if I have an OrderedDictionary in the backend.

Now I am using c# for backend, in c#, it has OrderedDictionary which will preserve the order. After I marshal the OrderedDictionary to json, the order will be lost. When I debug the code, I found the OrderedDictionary was totally fine , the only problem was JSON changed the order of the key.

After I google about how to solve the problem, I realized that I am not the only one who asked about how to keep the order of keys in json object. Most backend languages have something similar to OrderedList, when they marshal to json , they have the same problems, and all the solutions say that we should use array instead of object.

Can we have a new type of object to keep the order of the keys so that the OrderedDictionary can marshal to json with preserved order? Thanks.

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