diff --git a/iron-localstorage.d.ts b/iron-localstorage.d.ts
new file mode 100644
index 0000000..fd929b9
--- /dev/null
+++ b/iron-localstorage.d.ts
@@ -0,0 +1,135 @@
+/**
+ * DO NOT EDIT
+ *
+ * This file was automatically generated by
+ *   https://github.com/Polymer/gen-typescript-declarations
+ *
+ * To modify these typings, edit the source file(s):
+ *   iron-localstorage.html
+ */
+
+/// <reference path="../polymer/types/polymer.d.ts" />
+
+/**
+ * Element access to Web Storage API (window.localStorage).
+ *
+ * Keeps `value` property in sync with localStorage.
+ *
+ * Value is saved as json by default.
+ *
+ * ### Usage:
+ *
+ * `ls-sample` will automatically save changes to its value.
+ *
+ *     <dom-module id="ls-sample">
+ *       <iron-localstorage name="my-app-storage"
+ *         value="{{cartoon}}"
+ *         on-iron-localstorage-load-empty="initializeDefaultCartoon"
+ *       ></iron-localstorage>
+ *     </dom-module>
+ *
+ *     <script>
+ *       Polymer({
+ *         is: 'ls-sample',
+ *         properties: {
+ *           cartoon: {
+ *             type: Object
+ *           }
+ *         },
+ *         // initializes default if nothing has been stored
+ *         initializeDefaultCartoon: function() {
+ *           this.cartoon = {
+ *             name: "Mickey",
+ *             hasEars: true
+ *           }
+ *         },
+ *         // use path set api to propagate changes to localstorage
+ *         makeModifications: function() {
+ *           this.set('cartoon.name', "Minions");
+ *           this.set('cartoon.hasEars', false);
+ *         }
+ *       });
+ *     </script>
+ *
+ * ### Tech notes:
+ *
+ * * `value.*` is observed, and saved on modifications. You must use
+ *     path change notification methods such as `set()` to modify value
+ *     for changes to be observed.
+ *
+ * * Set `auto-save-disabled` to prevent automatic saving.
+ *
+ * * Value is saved as JSON by default.
+ *
+ * * To delete a key, set value to null
+ *
+ * Element listens to StorageAPI `storage` event, and will reload upon receiving it.
+ *
+ * **Warning**: do not bind value to sub-properties until Polymer
+ * [bug 1550](https://github.com/Polymer/polymer/issues/1550)
+ * is resolved. Local storage will be blown away.
+ * `<iron-localstorage value="{{foo.bar}}"` will cause **data loss**.
+ */
+interface IronLocalstorageElement extends Polymer.Element {
+
+  /**
+   * localStorage item key
+   */
+  name: string|null|undefined;
+
+  /**
+   * The data associated with this storage.
+   * If set to null item will be deleted.
+   */
+  value: any;
+
+  /**
+   * If true: do not convert value to JSON on save/load
+   */
+  useRaw: boolean|null|undefined;
+
+  /**
+   * Value will not be saved automatically if true. You'll have to do it manually with `save()`
+   */
+  autoSaveDisabled: boolean|null|undefined;
+
+  /**
+   * Last error encountered while saving/loading items
+   */
+  errorMessage: string|null|undefined;
+
+  /**
+   * True if value has been loaded
+   */
+  _loaded: boolean|null|undefined;
+  ready(): any;
+  attached(): any;
+  detached(): any;
+  _handleStorage(ev: any): any;
+  _trySaveValue(): any;
+  _debounceReload(): any;
+
+  /**
+   * Loads the value again. Use if you modify
+   * localStorage using DOM calls, and want to
+   * keep this element in sync.
+   */
+  reload(): any;
+
+  /**
+   * loads value from local storage
+   *
+   * @param externalChange true if loading changes from a different window
+   */
+  _load(externalChange?: boolean): any;
+
+  /**
+   * Saves the value to localStorage. Call to save if autoSaveDisabled is set.
+   * If `value` is null or undefined, deletes localStorage.
+   */
+  save(): any;
+}
+
+interface HTMLElementTagNameMap {
+  "iron-localstorage": IronLocalstorageElement;
+}
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..674729c
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,908 @@
+{
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+      }
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+}
diff --git a/package.json b/package.json
index 891d03c..17abd28 100644
--- a/package.json
+++ b/package.json
@@ -6,5 +6,12 @@
     "type": "git",
     "url": "git://github.com/PolymerElements/iron-localstorage.git"
   },
-  "license": "http://polymer.github.io/LICENSE.txt"
+  "license": "http://polymer.github.io/LICENSE.txt",
+  "devDependencies": {
+    "@polymer/gen-typescript-declarations": "^1.0.1",
+    "bower": "^1.8.0"
+  },
+  "scripts": {
+    "update-types": "rm -f *.d.ts **/*.d.ts && bower install && gen-typescript-declarations --outDir ."
+  }
 }