diff --git a/.gitignore b/.gitignore
index 2be39e4..678c29b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 bower_components*
 bower-*.json
+node_modules
diff --git a/.travis.yml b/.travis.yml
index 82266b7..45cc9cb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,10 @@ sudo: required
 before_script:
   - npm install -g bower polymer-cli
   - polymer install --variants
+  - >-
+    npm run update-types && git diff --exit-code || (echo -e
+    '\n\033[31mERROR:\033[0m Typings are stale. Please run "npm run
+    update-types".' && false)
 env:
   global:
     - secure: >-
@@ -19,5 +23,7 @@ addons:
       - google-chrome-stable
 script:
   - xvfb-run polymer test
-  - 'if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then polymer test -s ''default''; fi'
+  - >-
+    if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then polymer test -s 'default';
+    fi
 dist: trusty
diff --git a/iron-a11y-keys.d.ts b/iron-a11y-keys.d.ts
new file mode 100644
index 0000000..d8ae9e0
--- /dev/null
+++ b/iron-a11y-keys.d.ts
@@ -0,0 +1,31 @@
+/**
+ * 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-a11y-keys.html
+ */
+
+/// <reference path="../polymer/types/polymer.d.ts" />
+
+interface IronA11yKeysElement extends Polymer.Element, Polymer.IronA11yKeysBehavior {
+  target: Node|null;
+
+  /**
+   * Space delimited list of keys where each key follows the format:
+   * `[MODIFIER+]*KEY[:EVENT]`.
+   * e.g. `keys="space ctrl+shift+tab enter:keyup"`.
+   * More detail can be found in the "Grammar" section of the documentation
+   */
+  keys: string|null|undefined;
+  attached(): void;
+  _targetChanged(target: any): void;
+  _keysChanged(): void;
+  _fireKeysPressed(event: any): void;
+}
+
+interface HTMLElementTagNameMap {
+  "iron-a11y-keys": IronA11yKeysElement;
+}
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..5909378
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,974 @@
+{
+  "name": "@polymer/iron-a11y-keys",
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "@polymer/gen-typescript-declarations": {
+      "version": "1.2.0",
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+      "dev": true,
+      "requires": {
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+        "@types/fs-extra": "5.0.0",
+        "@types/glob": "5.0.35",
+        "command-line-args": "5.0.2",
+        "command-line-usage": "4.1.0",
+        "doctrine": "2.1.0",
+        "escodegen": "1.9.0",
+        "fs-extra": "5.0.0",
+        "glob": "7.1.2",
+        "minimatch": "3.0.4",
+        "polymer-analyzer": "3.0.0-pre.12"
+      }
+    },
+    "@types/babel-generator": {
+      "version": "6.25.1",
+      "resolved": "https://registry.npmjs.org/@types/babel-generator/-/babel-generator-6.25.1.tgz",
+      "integrity": "sha512-nKNz9Ch4WP2TFZjQROhxqqS2SCk0OoDzGazJI6S+2sGgW9P7N4o3vluZAXFuPEnRqtz2A0vrrkK3tjQktxIlRw==",
+      "dev": true,
+      "requires": {
+        "@types/babel-types": "6.25.2"
+      }
+    },
+    "@types/babel-traverse": {
+      "version": "6.25.3",
+      "resolved": "https://registry.npmjs.org/@types/babel-traverse/-/babel-traverse-6.25.3.tgz",
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+      "dev": true,
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+        "@types/babel-types": "6.25.2"
+      }
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..785418b
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "@polymer/iron-a11y-keys",
+  "private": true,
+  "description": "A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/PolymerElements/iron-a11y-keys.git"
+  },
+  "license": "BSD-3-Clause",
+  "devDependencies": {
+    "@polymer/gen-typescript-declarations": "^1.2.0",
+    "bower": "^1.8.0"
+  },
+  "scripts": {
+    "update-types": "bower install && gen-typescript-declarations --deleteExisting --outDir ."
+  }
+}