Add definition for "email-templates".

Update definition for "helmet".

helmet/helmet-tests.ts

@@ -1,59 +1,62 @@
 /// <reference path="helmet.d.ts" />
 
+import express = require("express")
 import helmet = require("helmet");
 
+var app = express();
+
 /**
  * @summary Test for {@see helmet}.
  */
 function helmetTest() {
-    helmet();
+    app.use(helmet());
 }
 
 /**
  * @summary Test for {@see helmet#xssFilter} function.
  */
 function contentSecurityPolicyTest() {
-    helmet.xssFilter();
-    helmet.xssFilter({ setOnOldIE: true });
+    app.use(helmet.xssFilter());
+    app.use(helmet.xssFilter({ setOnOldIE: true }));
 }
 
 /**
  * @summary Test for {@see helmet#frameguard} function.
  */
 function frameguardTest() {
-    helmet.frameguard();
-    helmet.frameguard("sameorigin");
+    app.use(helmet.frameguard());
+    app.use(helmet.frameguard("sameorigin"));
 }
 
 /**
  * @summary Test for {@see helmet#hsts} function.
  */
 function hstsTest() {
-    helmet.hsts();
-    helmet.hsts({ maxAge: 7776000000 });
+    app.use(helmet.hsts());
+    app.use(helmet.hsts({ maxAge: 7776000000 }));
 }
 
 /**
  * @summary Test for {@see helmet#ieNoOpen} function.
  */
 function ieNoOpenTest() {
-    helmet.ieNoOpen();
+    app.use(helmet.ieNoOpen());
 }
 
 /**
  * @summary Test for {@see helmet#noSniff} function.
  */
 function noSniffTest() {
-    helmet.noSniff();
+    app.use(helmet.noSniff());
 }
 
 /**
  * @summary Test for {@see helmet#publicKeyPins} function.
  */
 function publicKeyPinsTest() {
-    helmet.publicKeyPins({
+    app.use(helmet.publicKeyPins({
         sha256s: ["AbCdEf123=", "ZyXwVu456="],
         includeSubdomains: true,
         reportUri: "http://example.com"
-    });
+    }));
 }

helmet/helmet.d.ts

@@ -3,55 +3,75 @@
 // Definitions by: Cyril Schumacher <https://github.com/cyrilschumacher>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
-interface Helmet {
-    (): void;
-
-    /**
-     * @summary Prevent clickjacking.
-     * @param {string} header The header.
-     */
-    frameguard(header ?: string): void;
-
-    /**
-     * @summary Hide "X-Powered-By" header.
-     * @param {Object} options The options.
-     */
-    hidePoweredBy(options ?: Object): void;
-
-    /**
-     * @summary Adds the "Strict-Transport-Security" header.
-     * @param {Object} options The options.
-     */
-    hsts(options ?: Object): void;
-
-    /**
-     * @summary Add the "X-Download-Options" header.
-     */
-    ieNoOpen(): void;
-
-    /**
-     * @summary Add the "Cache-Control" and "Pragma" headers to stop caching.
-     */
-    nocache(options ?: Object): void;
-
-    /**
-     * @summary Adds the "X-Content-Type-Options" header.
-     */
-    noSniff(): void;
-
-    /**
-     * @summary Adds the "Public-Key-Pins" header.
-     */
-    publicKeyPins(options ?: Object): void;
-
-    /**
-     * @summary Prevent Cross-site scripting attacks.
-     * @param {Object} options The options.
-     */
-    xssFilter(options ?: Object): void;
-}
+/// <reference path="../express/express.d.ts" />
 
 declare module "helmet" {
+    import express = require("express");
+
+    /**
+     * @summary Interface for helmet class.
+     * @interface
+     */
+    interface Helmet {
+        /**
+         * @summary Constructor.
+         * @return {RequestHandler} The Request handler.
+         */
+        ():express.RequestHandler;
+
+        /**
+         * @summary Prevent clickjacking.
+         * @param {string} header The header.
+         * @return {RequestHandler} The Request handler.
+         */
+        frameguard(header ?: string):express.RequestHandler;
+
+        /**
+         * @summary Hide "X-Powered-By" header.
+         * @param {Object} options The options.
+         * @return {RequestHandler} The Request handler.
+         */
+        hidePoweredBy(options ?: Object):express.RequestHandler;
+
+        /**
+         * @summary Adds the "Strict-Transport-Security" header.
+         * @param {Object} options The options.
+         * @return {RequestHandler} The Request handler.
+         */
+        hsts(options ?: Object):express.RequestHandler;
+
+        /**
+         * @summary Add the "X-Download-Options" header.
+         * @return {RequestHandler} The Request handler.
+         */
+        ieNoOpen():express.RequestHandler;
+
+        /**
+         * @summary Add the "Cache-Control" and "Pragma" headers to stop caching.
+         * @return {RequestHandler} The Request handler.
+         */
+        noCache(options ?: Object):express.RequestHandler;
+
+        /**
+         * @summary Adds the "X-Content-Type-Options" header.
+         * @return {RequestHandler} The Request handler.
+         */
+        noSniff():express.RequestHandler;
+
+        /**
+         * @summary Adds the "Public-Key-Pins" header.
+         * @return {RequestHandler} The Request handler.
+         */
+        publicKeyPins(options ?: Object):express.RequestHandler;
+
+        /**
+         * @summary Prevent Cross-site scripting attacks.
+         * @return {RequestHandler} The Request handler.
+         * @param {Object} options The options.
+         */
+        xssFilter(options ?: Object):express.RequestHandler;
+    }
+
     var helmet: Helmet;
     export = helmet;
 }