Use System.Text.Json instead of Newtonsoft

[insomniachi]

• Faster
• Native AOT
• Part of BCL

[insomniachi]

closing as this was previously posted by other people and rejected.

[Lachee]

Times have changed and im not against it any more.
However it has some requirements that will need to be met:

• AOT ( which you said it has )
• Cross Platform ( must work on Linux, Windows, and MacOS )
• Compatible with Unity3D ( the current solution is to use the Newtonsoft.JSON package provided by unity )
• Support .NET FX 4 ( a older requirement, but many monogames still use this ).

[AceiusIO]

I suppose you could have some kind of interface for serialization, and then implement one for Newtonsoft and one for System.Text. At compile time, you could build a Newtonsoft compatible version and a System.Text compatible version, and use a preprocessor directive to choose which one to instantiate. The Newtonsoft JsonProperty annotations would also have to be complimented by JsonPropertyName annotations for System.Text.