diff --git a/gen-tsd.json b/gen-tsd.json
index 3d3a5e7134..f73b47a84b 100644
--- a/gen-tsd.json
+++ b/gen-tsd.json
@@ -11,13 +11,29 @@
     "../shadycss/apply-shim.d.ts",
     "../shadycss/custom-style-interface.d.ts"
   ],
-  "addReferences": {
-    "lib/utils/boot.d.ts": [
-      "extra-types.d.ts"
-    ]
-  },
   "renameTypes": {
-    "Polymer_PropertyEffects": "Polymer.PropertyEffects",
-    "Element": "_Element"
+    "Polymer_PropertyEffects": "PropertyEffects"
+  },
+  "autoImport": {
+    "interfaces": [
+      "PolymerElementPropertiesMeta",
+      "PolymerElementProperties",
+      "PolymerInit",
+      "StampedTemplate",
+      "NodeInfo",
+      "TemplateInfo",
+      "LiteralBindingPart",
+      "MethodArg",
+      "MethodSignature",
+      "ExpressionBindingPart",
+      "BindingPart",
+      "Binding",
+      "AsyncInterface",
+      "GestureRecognizer",
+      "IdleDeadline"
+    ],
+    "lib/utils/debounce.js": [
+      "Debouncer"
+    ]
   }
 }
diff --git a/interfaces.d.ts b/interfaces.d.ts
new file mode 100644
index 0000000000..9ff30e0ac7
--- /dev/null
+++ b/interfaces.d.ts
@@ -0,0 +1,135 @@
+/**
+ * This file contains the types that are required for compilation of the
+ * Polymer generated type declarations, but which could not themselves be
+ * automatically generated.
+ */
+
+// Types from "externs/polymer-externs.js"
+
+export interface PolymerElementPropertiesMeta {
+  type?: Function;
+  value?: any;
+  readOnly?: boolean;
+  computed?: string;
+  reflectToAttribute?: boolean;
+  notify?: boolean;
+  observer?: string|((val: any, old: any) => void);
+}
+
+export type PolymerElementProperties = {
+  [key: string]: PolymerElementPropertiesMeta|Function;
+};
+
+// TODO Document these properties.
+export interface PolymerInit {
+  is: string;
+  extends?: string;
+  properties?: PolymerElementProperties;
+  observers?: string[];
+  template?: HTMLTemplateElement|string;
+  hostAttributes?: {[key: string]: any};
+  listeners?: {[key: string]: string};
+}
+
+// Types from "externs/polymer-internal-shared-types.js"
+
+export interface StampedTemplate extends DocumentFragment {
+  __noInsertionPoint: boolean;
+  nodeList: Node[];
+  $: {[key: string]: Node};
+  templateInfo?: TemplateInfo;
+}
+
+export interface NodeInfo {
+  id: string;
+  events: {name: string, value: string}[];
+  hasInsertionPoint: boolean;
+  templateInfo: TemplateInfo;
+  parentInfo: NodeInfo;
+  parentIndex: number;
+  infoIndex: number;
+  bindings: Binding[];
+}
+
+export interface TemplateInfo {
+  nodeInfoList: NodeInfo[];
+  nodeList: Node[];
+  stripWhitespace: boolean;
+  hasInsertionPoint?: boolean;
+  hostProps: Object;
+  propertyEffects: Object;
+  nextTemplateInfo?: TemplateInfo;
+  previousTemplateInfo?: TemplateInfo;
+  childNodes: Node[];
+  wasPreBound: boolean;
+}
+
+export interface LiteralBindingPart {
+  literal: string;
+  compoundIndex?: number;
+}
+
+export interface MethodArg {
+  literal: boolean;
+  name: string;
+  value: string|number;
+  rootProperty?: string;
+  structured?: boolean;
+  wildcard?: boolean;
+}
+
+export interface MethodSignature {
+  methodName: string;
+  static: boolean;
+  args: MethodArg[];
+  dynamicFn?: boolean;
+}
+
+export interface ExpressionBindingPart {
+  mode: string;
+  negate: boolean;
+  source: string;
+  dependencies: Array<MethodArg|string>;
+  customEvent: boolean;
+  signature: Object|null;
+  event: string;
+}
+
+export type BindingPart = LiteralBindingPart|ExpressionBindingPart;
+
+export interface Binding {
+  kind: string;
+  target: string;
+  parts: BindingPart[];
+  literal?: string;
+  isCompound: boolean;
+  listenerEvent?: string;
+  listenerNegate?: boolean;
+}
+
+export interface AsyncInterface {
+  run: (fn: Function, delay?: number) => number;
+  cancel: (handle: number) => void;
+}
+
+// Types from "lib/utils/gestures.html"
+
+export interface GestureRecognizer {
+  reset: () => void;
+  mousedown?: (e: MouseEvent) => void;
+  mousemove?: (e: MouseEvent) => void;
+  mouseup?: (e: MouseEvent) => void;
+  touchstart?: (e: TouchEvent) => void;
+  touchmove?: (e: TouchEvent) => void;
+  touchend?: (e: TouchEvent) => void;
+  click?: (e: MouseEvent) => void;
+}
+
+/**
+ * Not defined in the TypeScript DOM library.
+ * See https://developer.mozilla.org/en-US/docs/Web/API/IdleDeadline
+ */
+export interface IdleDeadline {
+  didTimeout: boolean;
+  timeRemaining(): number;
+}