pub const array: fn(List(Json)) -> Json
pub const bool: fn(Bool) -> Json
pub const float: fn(Float) -> Json
pub const int: fn(Int) -> Json
pub const null: fn() -> Json
pub const nullable: fn(Option(a), fn(a) -> Json) -> Json
pub const object: fn(List(#(String, Json))) -> Json
pub const string: fn(String) -> Json