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is-stream (2.0.1)

Published 2026-02-24 13:58:40 +00:00 by atheaadmin

Installation

Setup this registry in your project .npmrc file:

registry=

To install the package using npm, run the following command:

npm install is-stream@2.0.1

or add it to the package.json file:

"is-stream": "2.0.1"

For more information on the npm registry, see the documentation.

About this package

is-stream

Check if something is a Node.js stream

Install

$ npm install is-stream

Usage

const fs = require('fs');
const isStream = require('is-stream');

isStream(fs.createReadStream('unicorn.png'));
//=> true

isStream({});
//=> false

API

isStream(stream)

Returns a boolean for whether it's a Stream.

isStream.writable(stream)

Returns a boolean for whether it's a stream.Writable.

isStream.readable(stream)

Returns a boolean for whether it's a stream.Readable.

isStream.duplex(stream)

Returns a boolean for whether it's a stream.Duplex.

isStream.transform(stream)

Returns a boolean for whether it's a stream.Transform.

Related

• is-file-stream - Detect if a stream is a file stream

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Dependencies

Development Dependencies

ID	Version
@types/node	^11.13.6
ava	^1.4.1
tempy	^0.3.0
tsd	^0.7.2
xo	^0.24.0

Keywords

stream type streams writable readable duplex transform check detect is

Details

npm

2026-02-24 13:58:40 +00:00

1

Sindre Sorhus

Project Site

MIT

latest

2.2 KiB

Assets (1)

is-stream-2.0.1.tgz 2.2 KiB

Versions (1) View all

2.0.1 2026-02-24