@stdlib/streams-node-empty

Create an empty readable stream.

Usage no npm install needed!

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README

Empty Stream

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Create an "empty" readable stream.

Installation

npm install @stdlib/streams-node-empty

Usage

var emptyStream = require( '@stdlib/streams-node-empty' );

emptyStream( [options] )

Returns an "empty" readable stream (i.e., a stream which never streams any values).

var inspectStream = require( '@stdlib/streams-node-inspect-sink' );

function log( chunk ) {
    // This function should never be called...
    console.log( chunk.toString() );
}

var stream = emptyStream();
var iStream = inspectStream( log );

stream.pipe( iStream );

The function accepts the following options:

  • objectMode: specifies whether a stream should operate in objectMode. Default: false.

To set stream options,

var opts = {
    'objectMode': true
};

var stream = emptyStream( opts );

emptyStream.factory( [options] )

Returns a function for creating "empty" readable streams.

var opts = {
    'objectMode': true
};

var createStream = emptyStream.factory( opts );

var stream1 = createStream();
var stream2 = createStream();
// ...

The method accepts the same options as emptyStream().


emptyStream.objectMode()

This method is a convenience function to create "empty" streams which always operate in objectMode.

var inspectStream = require( '@stdlib/streams-node-inspect-sink' );

function log( v ) {
    console.log( v );
}

var stream = emptyStream.objectMode();

var opts = {
    'objectMode': true
};
var iStream = inspectStream( opts, log );

stream.pipe( iStream );

Examples

var inspectStream = require( '@stdlib/streams-node-inspect-sink' );
var emptyStream = require( '@stdlib/streams-node-empty' );

function log( v ) {
    console.log( v.toString() );
}

var opts = {
    'objectMode': true
};
var stream = emptyStream( opts );

opts = {
    'objectMode': true
};
var iStream = inspectStream( opts, log );

stream.pipe( iStream );

CLI

Installation

To use the module as a general utility, install the module globally

npm install -g @stdlib/streams-node-empty

Usage

Usage: empty-stream [options]

Options:

  -h,  --help               Print this message.
  -V,  --version            Print the package version.

Examples

$ empty-stream

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

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License

See LICENSE.

Copyright

Copyright © 2016-2022. The Stdlib Authors.