diff --git a/lib/index.d.ts b/lib/index.d.ts
new file mode 100644
index 0000000..3a5d219
--- /dev/null
+++ b/lib/index.d.ts
@@ -0,0 +1,28 @@
+declare module 'discord-auth' {
+  export default class Strategy {
+    /**
+     * `Strategy` constructor.
+     *
+     * The Discord authentication strategy authenticates requests by delegating to
+     * Discord via the OAuth2.0 protocol
+     *
+     * Applications must supply a `verify` callback which accepts an `accessToken`,
+     * `refreshToken` and service-specific `profile`, and then calls the `cb`
+     * callback supplying a `user`, which should be set to `false` if the
+     * credentials are not valid. If an exception occured, `err` should be set.
+     *
+     * Options:
+     *   - `clientID`       OAuth ID to discord
+     *   - `clientSecret`   OAuth Secret to verify client to discord
+     *   - `callbackURL`    URL that discord will redirect to after auth
+     *   - `scope`          Array of permission scopes to request
+     *                      Check the official documentation for valid scopes to pass as an array.
+     */
+    constructor(options: {
+      clientID: string,
+      clientSecret: string,
+      callbackURL: string,
+      scope?: string | string[];
+    }, verify: (accessToken: string, refreshToken: string, profile: string, cb: (err: Error, user?: object) => void) => void)
+  }
+}
diff --git a/package.json b/package.json
index 394d27b..0fa5ad1 100644
--- a/package.json
+++ b/package.json
@@ -1,30 +1,31 @@
 {
-    "name": "discord-auth",
-    "version": "1.0.0",
-    "description": "Simple Discord OAuth client for making dashboard and website linked with discord.",
-    "main": "lib/index.js",
-    "repository": {
-      "type": "git",
-      "url": "git+https://github.com/IamTheRealSami/discord-auth.git"
-    },
-    "keywords": [
-      "passport",
-      "discord",
-      "auth",
-      "authentication",
-      "authn",
-      "identity",
-      "discord-auth",
-      "discord-oauth",
-      "discordapp"
-    ],
-    "author": "IamTheRealSami",
-    "license": "ISC",
-    "bugs": {
-      "url": "https://github.com/IamTheRealSami/discord-auth/issues"
-    },
-    "homepage": "https://github.com/IamTheRealSami/discord-auth#readme",
-    "dependencies": {
-      "passport-oauth2": "^1.5.0"
-    }
-  }
\ No newline at end of file
+  "name": "discord-auth",
+  "version": "1.0.0",
+  "description": "Simple Discord OAuth client for making dashboard and website linked with discord.",
+  "main": "lib/index.js",
+  "types": "lib/index.d.ts",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/IamTheRealSami/discord-auth.git"
+  },
+  "keywords": [
+    "passport",
+    "discord",
+    "auth",
+    "authentication",
+    "authn",
+    "identity",
+    "discord-auth",
+    "discord-oauth",
+    "discordapp"
+  ],
+  "author": "IamTheRealSami",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/IamTheRealSami/discord-auth/issues"
+  },
+  "homepage": "https://github.com/IamTheRealSami/discord-auth#readme",
+  "dependencies": {
+    "passport-oauth2": "^1.5.0"
+  }
+}