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

License

MIT © Sindre Sorhus

Current Tags

• 3.0.0                                ...           latest (4 years ago)

4 Versions

• 3.0.0                                ...           4 years ago
• 2.0.1                                ...           4 years ago
• 2.0.0                                ...           6 years ago
• 1.1.0                                ...           9 years ago