diff --git a/README.md b/README.md
index d40e9b0..3070ca1 100644
--- a/README.md
+++ b/README.md
@@ -413,7 +413,7 @@ However, there is almost no use case where you would want to do that.
 
 Internally, this option is used when a `popstate` event triggers Pjax (to not `pushState()` again).
 
-##### `analytics` (Function|Boolean, default: a function that pushes `_gaq` `_trackPageview` or sends `ga` `pageview`
+##### `analytics` (Function | Boolean, default: a function that pushes `_gaq` `_trackPageview` or sends `ga` `pageview`
 
 Function that allows you to add behavior for analytics. By default it tries to track
 a pageview with Google Analytics (if it exists on the page).
@@ -421,9 +421,13 @@ It's called every time a page is switched, even for history navigation.
 
 Set to `false` to disable this behavior.
 
-##### `scrollTo` (Integer, default: `0`)
+##### `scrollTo` (Integer | \[Integer, Integer\] | False, default: `0`)
 
-Value (in px from the top of the page) to scroll to when a page is switched.
+When set to an integer, this is the value (in px from the top of the page) to scroll to when a page is switched.
+
+When set to an array of 2 integers (\[x, y\]), this is the value to scroll both horizontally and vertically.
+
+Set this to `false` to disable scrolling, which will mean the page will stay in that same position it was before loading the new elements.
 
 ##### `scrollRestoration` (Boolean, default: `true`)
 
@@ -606,7 +610,7 @@ Clone this repository and run `npm run example`, which will open the example app
 
 * ⇄ Pull requests and ★ Stars are always welcome.
 * For bugs and feature requests, please create an issue.
-* Pull requests must be accompanied by passing automated tests (`npm test`).
+* Pull requests must be accompanied by passing automated tests (`npm test`). If the API is changed, please update the Typescript definitions as well (`pjax.d.ts`).
 
 ## [CHANGELOG](CHANGELOG.md)
 
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..f7e8ccc
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,186 @@
+declare class Pjax {
+  constructor(options?: Partial<Pjax.IOptions>);
+
+  static switches: {
+    [key in DefaultSwitches]: Pjax.Switch
+  };
+
+  /**
+   * Checks if Pjax is supported by the environment.
+   */
+  static isSupported: () => boolean;
+
+  log: VoidFunction;
+
+  getElements(el: Element | Document): NodeListOf<Element>;
+
+  parseDOM(el: Element | Document): void;
+
+  refresh: ElementFunction;
+
+  reload: VoidFunction;
+
+  attachLink(el: HTMLAnchorElement): void;
+
+  attachForm(el: HTMLFormElement): void;
+
+  forEachSelectors(cb: ElementFunction, context: Pjax, DOMcontext?: Element | Document): void;
+
+  switchesSelectors(selectors: string[], fromEl: Element | Document, toEl: Element | Document, options: Pjax.IOptions): void;
+
+  latestChance(href: string): void;
+
+  onSwitch: VoidFunction;
+
+  /**
+   * Loads the HTML from the response into the DOM.
+   *
+   * @param {string} html
+   * @param {Pjax.IOptions} options
+   */
+  loadContent(html: string, options: Pjax.IOptions): void;
+
+  /**
+   * Aborts an ongoing XHR request.
+   *
+   * @param {XMLHttpRequest} request
+   */
+  abortRequest(request: XMLHttpRequest): void;
+
+  /**
+   * Makes the XHR request.
+   *
+   * @param {string} location The URI for the request.
+   * @param {Pjax.IOptions | null} options
+   * @param {(requestText: string, request: XMLHttpRequest, href: string) => void} callback The callback to call when
+   * the response is received. The signature should match that of <code>handleResponse</code>.
+   * @returns {XMLHttpRequest}
+   */
+  doRequest(location: string, options: Pjax.IOptions | null,
+            callback: (requestText: string, request: XMLHttpRequest, href: string) => void): XMLHttpRequest;
+
+  /**
+   * Saves the state, updates the URL if there were any redirects, then calls loadContent().
+   *
+   * @param {string} requestText The raw text of the response. Same as <code>request.responseText</code>.
+   * @param {XMLHttpRequest} request The XHR object.
+   * @param {string} href The original URI used to initiate the request.
+   */
+  handleResponse(requestText: string, request: XMLHttpRequest, href: string): void;
+
+  /**
+   * Initiates the request by calling <code>doRequest()</code>.
+   * @param {string} href
+   * @param {Pjax.IOptions} options
+   */
+  loadUrl(href: string, options?: Pjax.IOptions): void;
+
+  /**
+   * Called after all switches complete (even async).
+   */
+  afterAllSwitches: VoidFunction;
+
+  /**
+   * Allows reassignment of existing prototype functions to be able to do something before calling the original function.
+   * For example:
+   *
+   * <pre>
+   *   pjax._handleResponse = pjax.handleResponse;
+   *   pjax.handleResponse = (requestText: string, request: XMLHttpRequest, href: string) => {
+   *     return pjax._handleResponse(requestText, request, href);
+   *   }
+   * </pre>
+   */
+  [key: string]: Function;
+}
+
+declare namespace Pjax {
+  export interface IOptions {
+    /**
+     * CSS selector to use to retrieve links to apply Pjax to.
+     */
+    elements: string;
+
+    /**
+     * CSS selectors for the elements to replace.
+     */
+    selectors: string[];
+
+    /**
+     * Objects containing callbacks that can be used to switch old elements with new elements.
+     * Keys should be one of the defined selectors.
+     */
+    switches: StringKeyedObject<Switch>;
+
+    /**
+     * These are options that can be used during switches.
+     * Keys should be one of the defined selectors.
+     */
+    switchesOptions: StringKeyedObject;
+
+    /**
+     * Enable the use of pushState(). Disabling this will prevent Pjax from updating browser history.
+     * Internally, this option is used when a popstate event triggers Pjax (to not pushState() again).
+     */
+    history: boolean;
+
+    /**
+     * Function that allows you to add behavior for analytics.
+     * By default it tries to track a pageview with Google Analytics (if it exists on the page).
+     * It's called every time a page is switched, even for history navigation.
+     * Set to false to disable this behavior.
+     */
+    analytics: Function | false;
+
+    /**
+     * When set to an integer, this is the value (in px from the top of the page) to scroll to when a page is switched.
+     * When set to an array of 2 integers ([x, y]), this is the value to scroll both horizontally and vertically.
+     * Set this to false to disable scrolling, which will mean the page will stay in that same position it was before
+     * loading the new elements.
+     */
+    scrollTo: number | [number, number] | false;
+
+    /**
+     * When set to true, attempt to restore the scroll position when navigating backwards or forwards.
+     */
+    scrollRestoration: boolean;
+
+    /**
+     * When set to true, append a timestamp query string segment to the requested URLs in order to skip browser cache.
+     */
+    cacheBust: boolean;
+
+    /**
+     * Enables verbose mode.
+     */
+    debug: boolean;
+
+    /**
+     * The timeout in milliseconds for the XHR requests. Set to 0 to disable the timeout.
+     */
+    timeout: number;
+
+    /**
+     * When set to true, clicking on a link that points to the current URL will trigger a full page reload.
+     * (Note that if cacheBust is set to true, the code that checks if the href is the same as the current page's URL
+     * will not work, due to the query string appended to force a cache bust).
+     */
+    currentUrlFullReload: boolean;
+  }
+
+  export type Switch = (oldEl: Element, newEl: Element, options?: IOptions, switchesOptions?: StringKeyedObject) => void;
+}
+
+interface StringKeyedObject<T = any> {
+  [key: string]: T
+}
+
+type ElementFunction = (el: Element) => void;
+
+declare enum DefaultSwitches {
+  innerHTML = "innerHTML",
+  ouetrHTML = "outerHTML",
+  sideBySide = "sideBySide"
+}
+
+export = Pjax;
diff --git a/package.json b/package.json
index a925c5d..a00fe1e 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "pjax.js",
     "pjax.min.js"
   ],
+  "types": "index.d.ts",
   "devDependencies": {
     "browserify": "^15.0.0",
     "jscs": "^3.0.7",
diff --git a/tests/test.ts b/tests/test.ts
new file mode 100644
index 0000000..4d76ad4
--- /dev/null
+++ b/tests/test.ts
@@ -0,0 +1,41 @@
+import Pjax = require("../index");
+
+let options: Pjax.IOptions = {
+  elements: "a.pjax, form.pjax",
+  selectors: ["div.pjax"],
+  switches: {
+    "a.pjax": (oldEl, newEl) => {
+      oldEl.parentNode.replaceChild(newEl, oldEl);
+      this.onSwitch();
+    },
+    "form.pjax": Pjax.switches.innerHTML
+  },
+  switchesOptions: {},
+  history: true,
+  analytics: false,
+  scrollTo: 1,
+  scrollRestoration: false,
+  cacheBust: false,
+  debug: true,
+  timeout: 60000,
+  currentUrlFullReload: true
+};
+
+options.analytics = () => {};
+options.scrollTo = [1, 1];
+options.scrollTo = false;
+
+if (Pjax.isSupported()) {
+  delete options.switchesOptions;
+  const pjax = new Pjax(options);
+
+  pjax.reload();
+  pjax.loadUrl("https://example.org", options);
+
+  pjax._handleResponse = pjax.handleResponse;
+  pjax.handleResponse = (requestText: string, request: XMLHttpRequest, href: string) => {
+    pjax.abortRequest(request);
+
+    return pjax._handleResponse(requestText, request, href);
+  }
+}