Check if something is a Node.js stream

npm install is-stream

import fs from 'node:fs';
import {isStream} from '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, an http.OutgoingMessage, an http.ServerResponse or an http.ClientRequest.

Returns a boolean for whether it's a stream.Readable or an http.IncomingMessage.

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

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

Type: boolean
Default: true

When this option is true, the method returns false if the stream has already been closed.

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