diff --git a/byline/byline-tests.ts b/byline/byline-tests.ts
new file mode 100644
index 0000000000..42de3d5d9c
--- /dev/null
+++ b/byline/byline-tests.ts
@@ -0,0 +1,47 @@
+/**
+ * Created by stefansteinhart on 31.01.15.
+ */
+
+/// <reference path="byline.d.ts" />
+
+import fs = require( 'fs' );
+import byline = require( 'byline' );
+
+//TODO can this be typed in an ambient way?
+//var stream = byline( fs.createReadStream( 'sample.txt', {encoding: 'utf8'} ) );
+
+var stream = byline.createStream( fs.createReadStream( 'sample.txt', {encoding: 'utf8'} ) );
+
+stream.on('data', function(line:string) {
+    console.log(line);
+});
+
+stream = byline.createStream(stream);
+
+stream.on('data', function(line:string) {
+    console.log(line);
+});
+
+var input = fs.createReadStream('sample.txt');
+stream.pipe(fs.createWriteStream('nolines.txt'));
+
+var lineStream = byline.createStream();
+input.pipe(lineStream);
+
+var output = fs.createWriteStream('test.txt');
+lineStream.pipe(output);
+
+stream.on('readable', function() {
+    var line:string;
+    while (null !== (line = stream.read())) {
+        console.log(line);
+    }
+});
+
+var LineStream = require('byline').LineStream;
+
+var output = fs.createWriteStream('nolines.txt');
+
+var lineStream:byline.LineStream = new LineStream();
+input.pipe(lineStream);
+lineStream.pipe(output);
\ No newline at end of file
diff --git a/byline/byline.d.ts b/byline/byline.d.ts
new file mode 100644
index 0000000000..6dac6ad50b
--- /dev/null
+++ b/byline/byline.d.ts
@@ -0,0 +1,38 @@
+// Type definitions for byline 4.2.1
+// Project: https://github.com/jahewson/node-byline
+// Definitions by: Stefan Steinhart <https://github.com/reppners>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module "byline" {
+    import stream = require("stream");
+
+    export interface LineStreamOptions extends stream.TransformOptions {
+        keepEmptyLines: boolean;
+    }
+
+    export interface LineStream extends stream.Transform {
+    }
+
+    export interface LineStreamCreatable extends LineStream {
+        new (options?:LineStreamOptions):LineStream
+    }
+
+    //TODO is it possible to declare static factory functions without name (directly on the module)
+    //
+    // JS:
+    // // convinience API
+    // module.exports = function(readStream, options) {
+    //      return module.exports.createStream(readStream, options);
+    // };
+    //
+    // TS:
+    // ():LineStream; // same as createStream():LineStream
+    // (stream:stream.Stream, options?:LineStreamOptions):LineStream; // same as createStream(stream, options?):LineStream
+
+    export function createStream():LineStream;
+    export function createStream(stream:NodeJS.ReadableStream, options?:LineStreamOptions):LineStream;
+
+    export var LineStream:LineStreamCreatable;
+}
\ No newline at end of file