Represents a chunk of data
A "duplex" stream is one that is both Readable and Writable, such as a TCP socket connection.
A "duplex" stream is one that is both Readable and Writable, such as a TCP socket connection.
Note that stream.Duplex is an abstract class designed to be extended with an underlying implementation of the stream._read(size) and stream._write(chunk, encoding, callback) methods as you would with a Readable or Writable stream class.
Since JavaScript doesn't have multiple prototypal inheritance, this class prototypally inherits from Readable, and then parasitically from Writable. It is thus up to the user to implement both the low-level stream._read(n) method as well as the low-level stream._write(chunk, encoding, callback) method on extension duplex classes.
Duplex Options
Duplex Options
Duplex Interface
Duplex Interface
Transform Interface
Transform Interface
This is a trivial implementation of a Transform stream that simply passes the input bytes across to the output.
This is a trivial implementation of a Transform stream that simply passes the input bytes across to the output. Its purpose is mainly for examples and testing, but there are occasionally use cases where it can come in handy as a building block for novel sorts of streams.
The Readable stream interface is the abstraction for a source of data that you are reading from.
The Readable stream interface is the abstraction for a source of data that you are reading from. In other words, data comes out of a Readable stream.
https://nodejs.org/api/stream.html#stream_readable_streams
Readable Pipe Options
Readable Pipe Options
Readable State
Readable State
Transform streams are Duplex streams where the output is in some way computed from the input.
Transform streams are Duplex streams where the output is in some way computed from the input. They implement both the Readable and Writable interfaces.
The Writable stream interface is an abstraction for a destination that you are writing data to.
The Writable stream interface is an abstraction for a destination that you are writing data to.
Represents a chunk of data