export declare const duplex: <R, IE, OE>(
  self: Channel.Channel<Chunk.Chunk<Uint8Array>, Chunk.Chunk<Uint8Array>, OE, MsgPackError | IE, void, unknown, R>
) => Channel.Channel<Chunk.Chunk<unknown>, Chunk.Chunk<unknown>, MsgPackError | OE, IE, void, unknown, R>

export declare const duplexSchema: {
  <IA, II, IR, OA, OI, OR>(options: {
    readonly inputSchema: Schema.Schema<IA, II, IR>
    readonly outputSchema: Schema.Schema<OA, OI, OR>
  }): <R, InErr, OutErr, OutDone, InDone>(
    self: Channel.Channel<Chunk.Chunk<Uint8Array>, Chunk.Chunk<Uint8Array>, OutErr, any, OutDone, InDone, R>
  ) => Channel.Channel<Chunk.Chunk<OA>, Chunk.Chunk<IA>, any, InErr, OutDone, InDone, IR | OR | R>
  <R, InErr, OutErr, OutDone, InDone, IA, II, IR, OA, OI, OR>(
    self: Channel.Channel<Chunk.Chunk<Uint8Array>, Chunk.Chunk<Uint8Array>, OutErr, any, OutDone, InDone, R>,
    options: { readonly inputSchema: Schema.Schema<IA, II, IR>; readonly outputSchema: Schema.Schema<OA, OI, OR> }
  ): Channel.Channel<Chunk.Chunk<OA>, Chunk.Chunk<IA>, any, InErr, OutDone, InDone, R | IR | OR>
}

export declare const pack: <IE = never, Done = unknown>() => Channel.Channel<
  Chunk.Chunk<Uint8Array>,
  Chunk.Chunk<unknown>,
  IE | MsgPackError,
  IE,
  Done,
  Done
>

export declare const packSchema: <A, I, R>(
  schema: Schema.Schema<A, I, R>
) => <IE = never, Done = unknown>() => Channel.Channel<Chunk.Chunk<Uint8Array>, Chunk.Chunk<A>, any, IE, Done, Done, R>

export declare const unpack: <IE = never, Done = unknown>() => Channel.Channel<
  Chunk.Chunk<unknown>,
  Chunk.Chunk<Uint8Array>,
  MsgPackError | IE,
  IE,
  Done,
  Done
>

export declare const unpackSchema: <A, I, R>(
  schema: Schema.Schema<A, I, R>
) => <IE = never, Done = unknown>() => Channel.Channel<Chunk.Chunk<A>, Chunk.Chunk<Uint8Array>, any, IE, Done, Done, R>

export declare class MsgPackError