@stdlib/streams/node/empty/README.md

Streams.

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# Empty Stream

> Create an "empty" [readable stream][readable-stream].

<section class="usage">

## Usage

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

<a name="empty-stream"></a>

#### emptyStream( \[options] )

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

```javascript
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][stream] should operate in [objectMode][object-mode]. Default: `false`.

To set [stream][stream] `options`,

```javascript
var opts = {
    'objectMode': true
};

var stream = emptyStream( opts );
```

* * *

#### emptyStream.factory( \[options] )

Returns a `function` for creating "empty" [readable streams][readable-stream].

```javascript
var opts = {
    'objectMode': true
};

var createStream = emptyStream.factory( opts );

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

The method accepts the same `options` as [`emptyStream()`](#empty-stream).

* * *

#### emptyStream.objectMode()

This method is a convenience function to create "empty" [streams][stream] which **always** operate in [objectMode][object-mode].

```javascript
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 );
```

</section>

<!-- /.usage -->

<section class="notes">

</section>

<!-- /.notes -->

* * *

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
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 );
```

</section>

<!-- /.examples -->

<!-- Section for describing a command-line interface. -->

* * *

<section class="cli">

## CLI

<!-- CLI usage documentation. -->

<section class="usage">

### Usage

```text
Usage: empty-stream [options]

Options:

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

</section>

<!-- /.usage -->

<!-- CLI usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

</section>

<!-- /.notes -->

<!-- CLI usage examples. -->

<section class="examples">

### Examples

```bash
$ empty-stream
```

</section>

<!-- /.examples -->

</section>

<!-- /.cli -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/streams/node/from-constant`][@stdlib/streams/node/from-constant]</span><span class="delimiter">: </span><span class="description">create a readable stream which always streams the same value.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="links">

[stream]: https://nodejs.org/api/stream.html

[object-mode]: https://nodejs.org/api/stream.html#stream_object_mode

[readable-stream]: https://nodejs.org/api/stream.html

<!-- <related-links> -->

[@stdlib/streams/node/from-constant]: https://github.com/stdlib-js/streams/tree/main/node/from-constant

<!-- </related-links> -->

</section>

<!-- /.links -->