_readnoop.js

var stream = require('stream');
function streamify(text) {
    var s = new stream.Readable();
    s.push(text);
    s.push(null);
    return s;
}

streamify('foo\n').pipe(process.stdout);

Usage: node _readnoop

Expected result: the same crash as if you'd done this in the REPL:

$ node
var s = new stream.Readable();
undefined
s.push('foo')
true

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: not implemented
    at Readable._read (_stream_readable.js:446:22)
    at Readable.read (_stream_readable.js:320:10)
    at maybeReadMore_ (_stream_readable.js:431:12)
    at _stream_readable.js:422:7
    at process._tickCallback (node.js:415:13)

Actual result in Node v0.10.26:

$ node _readnoop.js 
foo

Thank you for posting this answer on stackoverflow.

+1