diff --git a/less-middleware/less-middleware-tests.ts b/less-middleware/less-middleware-tests.ts
new file mode 100644
index 0000000000..0a84203b60
--- /dev/null
+++ b/less-middleware/less-middleware-tests.ts
@@ -0,0 +1,28 @@
+/// <reference path="less-middleware.d.ts" />
+
+import express = require('express');
+import lessMiddleware = require('less-middleware');
+var app = express();
+
+app.use(lessMiddleware('public', {
+    cacheFile: null,
+    debug: false,
+    dest: 'dest',
+    force: false,
+    once: false,
+    pathRoot: 'root',
+    postprocess: {
+        css: function(css, req) { return css; },
+    },
+    preprocess: {
+        less: function(src, req) { return src; },
+        path: function(pathname, req) { return pathname; },
+        importPaths: function(paths, req) { return paths; }
+    },
+    render: {
+        compress: 'auto',
+        yuicompress: false,
+        paths: ['foo', 'bar']
+    },
+    storeCss: function(css, req, next) {},
+}));
diff --git a/less-middleware/less-middleware.d.ts b/less-middleware/less-middleware.d.ts
new file mode 100644
index 0000000000..ee0e0069d5
--- /dev/null
+++ b/less-middleware/less-middleware.d.ts
@@ -0,0 +1,108 @@
+// Type definitions for less-middleware 2.0.1
+// Project: https://github.com/emberfeather/less.js-middleware
+// Definitions by: Federico Bond <https://github.com/federicobond/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/* =================== USAGE ===================
+
+    import lessMiddleware = require('less-middleware');
+    app.use(lessMiddleware(source, options));
+
+ =============================================== */
+
+/// <reference path="../express/express.d.ts" />
+
+declare module "less-middleware" {
+    import express = require('express');
+
+    /**
+     * Middleware created to allow processing of Less files for Connect JS framework
+     * and by extension the Express JS framework
+     */
+    function lessMiddleware(source: string, options?: {
+        /**
+        * Show more verbose logging?
+        */
+        debug?: boolean;
+
+        /**
+        * Destination directory to output the compiled .css files.
+        */
+        dest?: string;
+
+        /**
+         * Always re-compile less files on each request.
+         */
+        force?: boolean;
+
+        /**
+         * Only recompile once after each server restart.
+         * Useful for reducing disk i/o on production.
+         */
+        once?: boolean;
+
+        /**
+         * Common root of the source and destination.
+         * It is prepended to both the source and destination before being used.
+         */
+        pathRoot?: string;
+
+        /**
+         * Object containing functions relevant to preprocessing data.
+         */
+        postprocess?: {
+
+          /**
+           * Function that modifies the compiled css output before being stored.
+           */
+          css?(css: string, req: express.Request): string;
+        };
+
+        /**
+         * Object containing functions relevant to preprocessing data.
+         */
+        preprocess?: {
+
+            /**
+             * Function that modifies the raw less output before being parsed and compiled.
+             */
+            less?(css: string, req: express.Request): string;
+
+            /**
+             * Function that modifies the less pathname before being loaded from the filesystem.
+             */
+            path?(pathname: string, req: express.Request): string;
+
+            /**
+             * Function that modifies the import paths used by the less parser per request.
+             */
+            importPaths?(paths: string[], req: express.Request): string[];
+        };
+
+        /**
+         * Options for the less render.
+         */
+        render?: {
+
+            compress?: string;
+            yuicompress?: boolean;
+            paths?: string[];
+        };
+
+        /**
+         * Function that is in charge of storing the css in the filesystem.
+         */
+        storeCss?(pathname: string, css: string, req: express.Request, next: Function): void;
+
+        /**
+         * Path to a JSON file that will be used to cache less data across server restarts.
+         * This can greatly speed up initial load time after a server restart - if the less
+         * files haven't changed and the css files still exist, specifying this option will
+         * mean that the less files don't need to be recompiled after a server restart.  
+         */
+        cacheFile?: string;
+
+    }): express.RequestHandler;
+
+    export = lessMiddleware;
+}