--- /dev/null
+var Stream = require('stream'); // hack to fix a circular dependency issue when used with browserify
+exports = module.exports = require('./lib/_stream_readable.js');
+exports.Stream = Stream;
+exports.Readable = exports;
+exports.Writable = require('./lib/_stream_writable.js');
+exports.Duplex = require('./lib/_stream_duplex.js');
+exports.Transform = require('./lib/_stream_transform.js');
+exports.PassThrough = require('./lib/_stream_passthrough.js');
+if (!process.browser && process.env.READABLE_STREAM === 'disable') {
+ module.exports = require('stream');
+}