Check if something is a Node.js stream

$ npm install is-stream

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

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

isStream({});
//=> false

Returns a boolean for whether it's a Stream.

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

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

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

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

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