• The utility function duplexPair returns an Array with two items, each being a Duplex stream connected to the other side:

    const [ sideA, sideB ] = duplexPair();
    

    Whatever is written to one stream is made readable on the other. It provides behavior analogous to a network connection, where the data written by the client becomes readable by the server, and vice-versa.

    The Duplex streams are symmetrical; one or the other may be used without any difference in behavior.

    Parameters

    • Optional options: DuplexOptions

      A value to pass to both Duplex constructors, to set options such as buffering.

    Returns [Duplex, Duplex]

    Since

    v20.17.0