diff --git a/package.json b/package.json
index 0d3c327..6d29caa 100644
--- a/package.json
+++ b/package.json
@@ -13,11 +13,12 @@
   "version": "1.1.0",
   "description": "Provide performant way to subscribe to browser UI Events.",
   "main": "lib/index.js",
+  "types": "lib/index.d.ts",
   "scripts": {
     "test:sauce": "zuul -- test/*-test.js",
     "test:local": "zuul --local 8080 --ui mocha-bdd -- test/*-test.js",
     "test": "mocha test/",
-    "build": "NODE_ENV=production babel src --out-dir lib --source-maps",
+    "build": "NODE_ENV=production babel src --out-dir lib --source-maps --copy-files",
     "watch": "babel src --out-dir lib --watch --source-maps",
     "docs": "documentation build --access public --theme ./node_modules/documentation-markdown-api-theme/lib/index -f html -o out.md src/UIEventObserver.js && cat out.md | add-text-to-markdown README.md --section \"Usage\" --write; rm out.md",
     "prepublish": "npm run --if-present build"
diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..6d38bc9
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,16 @@
+/** Declaration file generated by dts-gen */
+export class UIEventObserver {
+    constructor();
+
+    hasSubscriber(target: any, domEventName: string): boolean;
+
+    subscribe(target: any, eventName: string, handler: Function): Function;
+
+    subscribeOnce(target: any, eventName: string, handler: Function): Function;
+
+    unsubscribe(target: any, eventName: string, handler: Function): void;
+
+    unsubscribeAll(): void;
+}
+export default new UIEventObserver();
+