How to wrap a buffer as a stream2 Readable stream?

Question

How can I transform a node.js buffer into a Readable stream following using the stream2 interface ?

I already found this answer and the stream-buffers module but this module is based on the stream1 interface.

Answer 1

The easiest way is probably to create a new PassThrough stream instance, and simply push your data into it. When you pipe it to other streams, the data will be pulled out of the first stream.

var stream = require('stream');  // Initiate the source var bufferStream = new stream.PassThrough();  // Write your buffer bufferStream.end(Buffer.from('Test data.'));  // Pipe it to something else  (i.e. stdout) bufferStream.pipe(process.stdout) 

Answer 2

As natevw suggested, it's even more idiomatic to use a stream.PassThrough, and end it with the buffer:

var buffer = new Buffer( 'foo' ); var bufferStream = new stream.PassThrough(); bufferStream.end( buffer ); bufferStream.pipe( process.stdout ); 

This is also how buffers are converted/piped in vinyl-fs.