diff --git a/gulp-coffeeify/gulp-coffeeify-tests.ts b/gulp-coffeeify/gulp-coffeeify-tests.ts
new file mode 100644
index 000000000..662428563
--- /dev/null
+++ b/gulp-coffeeify/gulp-coffeeify-tests.ts
@@ -0,0 +1,53 @@
+/// <reference path="../gulp/gulp.d.ts" />
+/// <reference path="gulp-coffeeify.d.ts" />
+
+import gulp = require('gulp');
+import coffeeify = require('gulp-coffeeify');
+
+// Basic usage
+gulp.task('scripts', function() {
+    gulp.src('src/coffee/**/*.coffee')
+        .pipe(coffeeify())
+        .pipe(gulp.dest('./build/js'));
+});
+
+gulp.task('scripts', function() {
+    gulp.src('src/coffee/**/*.coffee')
+        .pipe(coffeeify({
+            options: {
+                debug: true, // source map
+                paths: [__dirname + '/node_modules', __dirname + '/src/coffee']
+            }
+        }))
+        .pipe(gulp.dest('./build/js'));
+});
+
+gulp.task('scripts', function() {
+    gulp.src('src/coffee/**/*.coffee')
+        .pipe(coffeeify({
+            aliases: [
+                {
+                    cwd: 'src/coffee/app',
+                    base: 'app'
+                }
+            ]
+        }))
+        .pipe(gulp.dest('./build/js'));
+});
+
+var xform = function(data: string){
+    return 'module.exports = "' + data + '"';
+};
+gulp.task('scripts', function() {
+    gulp.src('src/coffee/**/*.coffee')
+        .pipe(coffeeify({
+            transforms: [
+                {
+                    ext: '.extension',
+                    transform: xform
+                }
+            ]
+        }))
+        .pipe(gulp.dest('./build/js'));
+});
+
diff --git a/gulp-coffeeify/gulp-coffeeify.d.ts b/gulp-coffeeify/gulp-coffeeify.d.ts
new file mode 100644
index 000000000..b847b8c03
--- /dev/null
+++ b/gulp-coffeeify/gulp-coffeeify.d.ts
@@ -0,0 +1,44 @@
+// Type definitions for gulp-coffeeify
+// Project: https://github.com/nariyu/gulp-coffeeify
+// Definitions by: Qubo <https://github.com/tkQubo>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module "gulp-coffeeify" {
+	namespace coffeeify {
+		interface Coffeeify {
+			(option?: Option): NodeJS.ReadWriteStream;
+		}
+
+		interface Option {
+			options?: {
+				debug?: boolean;
+				paths?: string[];
+			},
+			/**
+			 * [DEPRECATED]: You should use a 'paths' options of browserify.
+			 */
+			aliases?: Aliases;
+			/**
+			 * [DEPRECATED]
+			 */
+			transforms?: Transforms;
+		}
+
+		interface Aliases {
+			cwd?: string;
+			base?: string;
+		}
+
+		interface Transforms {
+			ext?: string;
+			transform?(data: string): string;
+		}
+	}
+
+	var coffeeify: coffeeify.Coffeeify;
+
+	export = coffeeify;
+}
+