ENH: Allow usage of custom library to serialize with to_json method.

[Duoquote]

Is your feature request related to a problem?

I was thinking about if I can pass my custom function to pandas' to_json to use some other json serializer, or maybe somehow access the dictionary that to_json method generates, turns out you can not do both.

Describe the solution you'd like

As seen here, the default json.dumps function is set hardcoded, a new argument can be added to to_json method like serializer_function. So that I can use any other library like orjson and pass it like df.to_json(serializer_function=orjson.dumps).

[rmhowe425]

take

[rmhowe425]

@mroeschke @Duoquote

Should we assume that the custom function should accept any and the other parameters provided to to_json?

Would we also want to add an engine_kwargs param just like we have done for other I/O methods?
engine_kwargs could be used to pass the appropriate params to the custom serializer

[rmhowe425]

@mroeschke @rhshadrach Do we want to close this issue in addition to the closed PR above?

[mroeschke]

Thanks for the issue, but it appears this hasn't gotten traction in a while so closing