Exhaust stream

exhaust.js

function exhaust(stream, cb) {
    var data = '';
 
    stream.on('data', function (chunk) {
        data += chunk.toString();
    });
    
    stream.on('error', function (err) {
        return cb(err);
    });

    stream.on('end', function () {
        return cb(null, data);
    });
}