Function to_writer 

pub fn to_writer<W, T>(writer: W, value: &T) -> Result<()>
where
    W: Write,
    T: ?Sized + Serialize,

Serialize the given data structure as JSON into the I/O stream.

Equivalent to serde_json::to_writer but with errors extended with serde_path_to_error.

See serde_json::to_writer for more documentation.