diff --git a/runtime/js/runtime/events.js b/runtime/js/runtime/events.js
index ba3bbf13..9ba4ffd8 100644
--- a/runtime/js/runtime/events.js
+++ b/runtime/js/runtime/events.js
@@ -61,9 +61,9 @@ function Emit(eventName) {
  * the event is acknowledged via `Event.Acknowledge`. Once this happens, `callback` is invoked ONCE
  *
  * @export
- * @param {*} eventName
- * @param {*} timeInMilliseconds
- * @param {*} callback
+ * @param {string} eventName
+ * @param {number} timeInMilliseconds
+ * @param {function} callback
  */
 function Heartbeat(eventName, timeInMilliseconds, callback) {
 	window.wails.Events.Heartbeat(eventName, timeInMilliseconds, callback);
diff --git a/runtime/js/runtime/package.json b/runtime/js/runtime/package.json
index 269e7347..0deaabd1 100644
--- a/runtime/js/runtime/package.json
+++ b/runtime/js/runtime/package.json
@@ -1,8 +1,9 @@
 {
   "name": "@wailsapp/runtime",
-  "version": "1.0.2",
+  "version": "1.0.5",
   "description": "Wails Javascript runtime library",
   "main": "main.js",
+  "types": "runtime.d.ts",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
@@ -20,5 +21,8 @@
   "bugs": {
     "url": "https://github.com/wailsapp/wails/issues"
   },
-  "homepage": "https://github.com/wailsapp/wails#readme"
-}
\ No newline at end of file
+  "homepage": "https://github.com/wailsapp/wails#readme",
+  "devDependencies": {
+    "dts-gen": "^0.5.8"
+  }
+}
diff --git a/runtime/js/runtime/runtime.d.ts b/runtime/js/runtime/runtime.d.ts
new file mode 100644
index 00000000..5dde1a70
--- /dev/null
+++ b/runtime/js/runtime/runtime.d.ts
@@ -0,0 +1,28 @@
+export = wailsapp__runtime;
+
+declare const wailsapp__runtime: {
+    Browser: {
+        OpenFile(filename: string): Promise<any>;
+        OpenURL(url: string): Promise<any>;
+    };
+    Events: {
+        Acknowledge(eventName: string): void; 
+        Emit(eventName: string): void;
+        Heartbeat(eventName: string, timeInMilliseconds: number, callback: () => void): void;
+        On(eventName: string, callback: () => void): void;
+        OnMultiple(eventName: string, callback: () => void, maxCallbacks: number): void;
+        Once(eventName: string, callback: () => void): void;
+    };
+    Init: {
+        Init(callback: () => void): void;
+    };
+    Log: {
+        Debug(message: string): void;
+        Error(message: string): void;
+        Fatal(message: string): void;
+        Info(message: string): void;
+        Warning(message: string): void;
+    };
+};
+
+