diff --git a/polymer/polymer-tests.ts b/polymer/polymer-tests.ts
index a606692fd..f594b4f22 100644
--- a/polymer/polymer-tests.ts
+++ b/polymer/polymer-tests.ts
@@ -10,6 +10,31 @@ class AbstractPolymerElement implements PolymerElement {
 	asyncFire(eventName: string, details?: any, targetNode?: any, bubbles?: boolean, cancelable?: boolean): void { }
 
 	cancelUnbindAll(): void { }
+		
+	/**
+	 * User must call from attached callback
+	 */
+	resizableAttachedHandler(): void {}
+
+	/**
+	 * User must call from detached callback
+	 */
+	resizableDetachedHandler(): void {}
+
+	/**
+	 * User must call from attached callback
+	 */
+	resizerAttachedHandler(): void {}
+
+	/**
+	 * User must call from detached callback
+	 */
+	resizerDetachedHandler(): void {}
+
+	/**
+	 * User should call when resizing or un-hiding children
+	 */
+	notifyResize(): void {}
 }
 
 class AbstractWebComponent extends AbstractPolymerElement {
diff --git a/polymer/polymer.app-router.d.ts b/polymer/polymer.app-router.d.ts
index 633479ba2..adf2f8d3b 100644
--- a/polymer/polymer.app-router.d.ts
+++ b/polymer/polymer.app-router.d.ts
@@ -3,9 +3,11 @@
 // Definitions by: Louis Grignon <https://github.com/lgrignon>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
+///<reference path="polymer.d.ts"/>
+
 declare module PolymerComponents {
 	module App {
-		export interface Router extends HTMLElement {
+		export interface Router extends PolymerElement, HTMLElement {
 			init(): void;
 			go(path: string, options?: { replace?: boolean }): void;
 		}
diff --git a/polymer/polymer.core-drawer-panel.d.ts b/polymer/polymer.core-drawer-panel.d.ts
index 2bad7b633..f219b4d0b 100644
--- a/polymer/polymer.core-drawer-panel.d.ts
+++ b/polymer/polymer.core-drawer-panel.d.ts
@@ -3,9 +3,11 @@
 // Definitions by: Louis Grignon <https://github.com/lgrignon>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
+///<reference path="polymer.d.ts"/>
+
 declare module PolymerComponents {
 	export module Core {
-		export interface DrawerPanel extends HTMLElement {
+		export interface DrawerPanel extends PolymerElement, HTMLElement {
 			/**
 			 * Width of the drawer panel. default: '256px'
 			 */
diff --git a/polymer/polymer.core-overlay.d.ts b/polymer/polymer.core-overlay.d.ts
new file mode 100644
index 000000000..706dee899
--- /dev/null
+++ b/polymer/polymer.core-overlay.d.ts
@@ -0,0 +1,92 @@
+// Type definitions for polymer's paper-toast
+// Project: https://github.com/Polymer/core-selector
+// Definitions by: Louis Grignon <https://github.com/lgrignon>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+///<reference path="polymer.d.ts"/>
+
+declare module PolymerComponents {
+	export module Core {
+		export interface Overlay extends PolymerElement, HTMLElement {
+			/**
+			 * The target element that will be shown when the overlay is opened. If unspecified, the core-overlay itself is the target.
+			 * default: the overlay element
+			 */
+			target: Object;
+
+			/**
+			 * A core-overlay's size is guaranteed to be constrained to the window size. To achieve this, the sizingElement is sized with a max-height/width. By default this element is the target element, but it can be specifically set to a specific element inside the target if that is more appropriate. This is useful, for example, when a region inside the overlay should scroll if needed.
+			 * default: the target element
+			 */
+			sizingTarget: Object;
+
+			/**
+			 * Set opened to true to show an overlay and to false to hide it. A core-overlay may be made initially opened by setting its opened attribute.
+			 * default: false
+			 */
+			opened: boolean;
+
+			/**
+			 * If true, the overlay has a backdrop darkening the rest of the screen. The backdrop element is attached to the document body and may be styled with the class core-overlay-backdrop. When opened the core-opened class is applied.
+			 * default: false
+			 */
+			backdrop: boolean;
+
+			/**
+			 * If true, the overlay is guaranteed to display above page content.
+			 * default: false
+			 */
+			layered: boolean;
+
+			/**
+			 * By default an overlay will close automatically if the user taps outside it or presses the escape key. Disable this behavior by setting the autoCloseDisabled property to true.
+			 * default: false
+			 */
+			autoCloseDisabled: boolean;
+
+			/**
+			 * By default an overlay will focus its target or an element inside it with the autoFocus attribute. Disable this behavior by setting the autoFocusDisabled property to true.
+			 * default: false
+			 */
+			autoFocusDisabled: boolean;
+	
+			/**
+			 * This property specifies an attribute on elements that should close the overlay on tap. Should not set closeSelector if this is set.
+			 * default: "core-overlay-toggle"
+			 */
+			closeAttribute: string;
+	
+			/**
+			 * This property specifies a selector matching elements that should close the overlay on tap. Should not set closeAttribute if this is set.
+			 * default: ''
+			 */
+			closeSelector: string;
+	
+			/**
+			 * The transition property specifies a string which identifies a core-transition element that will be used to help the overlay open and close. The default core-transition-fade will cause the overlay to fade in and out.
+			 * default: 'core-transition-fade'
+			 */
+			transition: string;
+
+			/**
+			 * Toggle the opened state of the overlay.
+			 */
+			toggle(): void;
+
+			/**
+			 * Open the overlay. This is equivalent to setting the opened property to true.
+			 */
+			open(): void;
+			
+			/**
+			 * Close the overlay. This is equivalent to setting the opened property to false.
+			 */
+			close(): void;
+
+			/**
+			 * Extensions of core-overlay should implement the resizeHandler method to adjust the size and position of the overlay when the browser window resizes.
+			 */
+			resizeHandler(): void;
+		}
+	}
+} 
\ No newline at end of file
diff --git a/polymer/polymer.core-selector.d.ts b/polymer/polymer.core-selector.d.ts
new file mode 100644
index 000000000..c7941cdde
--- /dev/null
+++ b/polymer/polymer.core-selector.d.ts
@@ -0,0 +1,20 @@
+// Type definitions for polymer's paper-toast
+// Project: https://github.com/Polymer/core-selector
+// Definitions by: Louis Grignon <https://github.com/lgrignon>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+///<reference path="polymer.d.ts"/>
+
+declare module PolymerComponents {
+	export module Core {
+		export interface Selector extends PolymerElement, HTMLElement {
+		}
+
+		export interface SelectorOnSelectEvent extends Event {
+			detail: {
+				item: HTMLElement;
+				isSelected: boolean;
+			};
+		}
+	}
+} 
\ No newline at end of file
diff --git a/polymer/polymer.d.ts b/polymer/polymer.d.ts
index dfb812f8c..ed084a448 100644
--- a/polymer/polymer.d.ts
+++ b/polymer/polymer.d.ts
@@ -18,6 +18,31 @@ interface PolymerElement {
 	domReady? (): void;
 	detached? (): void;
 	attributeChanged? (attrName: string, oldVal: any, newVal: any): void;
+	
+	/**
+	 * User must call from attached callback
+	 */
+	resizableAttachedHandler(): void;
+
+	/**
+	 * User must call from detached callback
+	 */
+	resizableDetachedHandler(): void;
+
+	/**
+	 * User must call from attached callback
+	 */
+	resizerAttachedHandler(): void;
+
+	/**
+	 * User must call from detached callback
+	 */
+	resizerDetachedHandler(): void;
+
+	/**
+	 * User should call when resizing or un-hiding children
+	 */
+	notifyResize(): void;
 }
 
 interface Polymer {
@@ -34,9 +59,6 @@ interface Polymer {
     (tagName: string, prototype: any): void;
     (prototype: PolymerElement): void;
     (): void;
-	// hacks for mixins
-    CoreResizer: any;
-    CoreResizable: any;
 }
 
 declare var Polymer: Polymer;
diff --git a/polymer/polymer.paper-dialog.d.ts b/polymer/polymer.paper-dialog.d.ts
new file mode 100644
index 000000000..51758e42c
--- /dev/null
+++ b/polymer/polymer.paper-dialog.d.ts
@@ -0,0 +1,30 @@
+// Type definitions for polymer's paper-dialog
+// Project: https://github.com/Polymer/paper-dialog
+// Definitions by: Louis Grignon <https://github.com/lgrignon>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+///<reference path="polymer.d.ts"/>
+///<reference path="polymer.core-overlay.d.ts"/>
+
+declare module PolymerComponents {
+	export module Paper {
+		export interface Dialog extends PolymerComponents.Core.Overlay, HTMLElement {
+			/**
+			 * The title of the dialog.
+			 * default: ''
+			 */
+			heading: string;
+			
+			/**
+			 * See paper-dialog-transition
+			 * default: ''
+			 */
+			transition: string;
+			
+			/**
+			 * default: true
+			 */
+			layered: boolean;
+		}
+	}
+} 
\ No newline at end of file
diff --git a/polymer/polymer.paper-toast.d.ts b/polymer/polymer.paper-toast.d.ts
index fbf8cd7a6..6e29c1c8b 100644
--- a/polymer/polymer.paper-toast.d.ts
+++ b/polymer/polymer.paper-toast.d.ts
@@ -3,9 +3,11 @@
 // Definitions by: Louis Grignon <https://github.com/lgrignon>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
+///<reference path="polymer.d.ts"/>
+
 declare module PolymerComponents {
 	export module Paper {
-		export interface Toast extends HTMLElement {
+		export interface Toast extends PolymerElement, HTMLElement {
 			/**
 			 * The text shows in a toast.
 			 * default: ''