diff --git a/webpack-dev-middleware/index.d.ts b/webpack-dev-middleware/index.d.ts
new file mode 100644
index 0000000000..e173d4e3d4
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+++ b/webpack-dev-middleware/index.d.ts
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+// Type definitions for webpack-dev-middleware 1.9
+// Project: http://github.com/webpack/webpack-dev-middleware
+// Definitions by: Benjamin Lim <https://github.com/bumbleblym>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { NextHandleFunction } from 'connect';
+import { compiler } from 'webpack';
+
+export = WebpackDevMiddleware;
+
+declare function WebpackDevMiddleware(compiler: compiler.Compiler, options: WebpackDevMiddleware.Options): WebpackDevMiddleware.WebpackDevMiddleware & NextHandleFunction;
+
+declare namespace WebpackDevMiddleware {
+	interface Options {
+		noInfo?: boolean;
+		quiet?: boolean;
+		lazy?: boolean;
+		watchOptions?: compiler.WatchOptions;
+		publicPath: string;
+		index?: string;
+		headers?: {
+			[name: string]: string;
+		};
+		stats?: compiler.StatsToStringOptions;
+		reporter?: Reporter | null;
+		serverSideRender?: boolean;
+
+		log?: Logger;
+		warn?: Logger;
+		error?: Logger;
+		filename?: string;
+	}
+
+	interface ReporterOptions {
+		state: boolean;
+		stats: compiler.Stats;
+		options: Options;
+	}
+
+	type Reporter = (reporterOptions: ReporterOptions) => void;
+
+	type Logger = (message: any) => void;
+
+	interface WebpackDevMiddleware {
+		close(callback?: () => void): void;
+		invalidate(callback?: (stats: compiler.Stats) => void): void;
+		waitUntilValid(callback?: (stats: compiler.Stats) => void): void;
+	}
+}
diff --git a/webpack-dev-middleware/tsconfig.json b/webpack-dev-middleware/tsconfig.json
new file mode 100644
index 0000000000..4ed359215b
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+++ b/webpack-dev-middleware/tsconfig.json
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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "webpack-dev-middleware-tests.ts"
+    ]
+}
diff --git a/webpack-dev-middleware/tslint.json b/webpack-dev-middleware/tslint.json
new file mode 100644
index 0000000000..377cc837d4
--- /dev/null
+++ b/webpack-dev-middleware/tslint.json
@@ -0,0 +1 @@
+{ "extends": "../tslint.json" }
diff --git a/webpack-dev-middleware/webpack-dev-middleware-tests.ts b/webpack-dev-middleware/webpack-dev-middleware-tests.ts
new file mode 100644
index 0000000000..b204fbe5d8
--- /dev/null
+++ b/webpack-dev-middleware/webpack-dev-middleware-tests.ts
@@ -0,0 +1,33 @@
+import * as express from 'express';
+import * as webpack from 'webpack';
+import * as webpackDevMiddleware from 'webpack-dev-middleware';
+
+const compiler = webpack({});
+const webpackDevMiddlewareInstance = webpackDevMiddleware(compiler, {
+	noInfo: false,
+	quiet: false,
+	lazy: true,
+	watchOptions: {
+		aggregateTimeout: 300,
+		poll: true,
+	},
+	publicPath: '/assets/',
+	index: 'index.html',
+	headers: {
+		'X-Custom-Header': 'yes'
+	},
+	stats: {
+		colors: true,
+	},
+	reporter: null,
+	serverSideRender: false,
+});
+
+const app = express();
+app.use(webpackDevMiddlewareInstance);
+
+webpackDevMiddlewareInstance.close();
+webpackDevMiddlewareInstance.invalidate();
+webpackDevMiddlewareInstance.waitUntilValid(function(){
+	console.log('Package is in a valid state');
+});