pub fn encoding(
  of encoder: TextEncoderStream,
) -> encoding.Encoding

pub fn new() -> TextEncoderStream

pub fn readable(
  of encoder: TextEncoderStream,
) -> readable_stream.ReadableStream(uint8_array.Uint8Array)

pub fn writable(
  of encoder: TextEncoderStream,
) -> writable_stream.WritableStream(String)