GeezerVison

declare function f(elt: HTMLElement): void;
function outer() {
  var self = this;
  var args: Draggable;
  args.helper = function () {
    return f(this); 
    
      // error 'this: Draggable' is not assignable to 'HTMLElement'
      //   Property 'accessKey' is missing in 'Draggable'
  };
}

// Override the prototype method on C
CBase.prototype.debug = function() {
  var self: C = this;
    // error type 'CBase' is not assignable to 'C'
    //   Property '_subclassProperty' is missing in 'CBase'

Object.defineProperties(Array.prototype, {
  empty: {
    value: function() {
      return this.length === 0;
    }
  }
})

function defineProperty(c: any, name: string, defaultValue: any) {
  var backingFieldName = "_" + name;
  Object.defineProperty(
    c.prototype,
    name,
    {
      get: function(): any {
        if (typeof this[backingFieldName] === 'undefined') {
          this[backingFieldName] = defaultValue;
        }
        return this[backingFieldName];
      }, // code continues ...
    }); 
};

interface MockJaxOptions {
  url?: string;
  responseTime?: number;
  status?: number;
  responseText?: string;
  responseHeaders: StringMap<string>;
}

$.mockjax({
  type: "GET",
  url: "blah/blah/blah",
  status: 200,
  contentType: "application/json",
  response: function() {
    this.responseText = JSON.stringify({ stuff: "things" });
    // error: property 'responseText' does not exist on '{ type: string ... }'
  }
});

    	public getEmitOutput(resource: URI, absoluteWorkersResourcePath: string): WinJS.TPromise<Modes.IEmitOutput> { // TODO@Ben technical debt: worker cannot resolve paths absolute
    		let model = this.resourceService.get(resource);
    		let cssLinks: string[] = this.cssLinks || [];
    
    		// Custom Renderer to fix href in images
    		let renderer = new Marked.marked.Renderer();
    		let $this = this;
    		renderer.image = function(href: string, title: string, text: string): string {
    			let out = '<img src="' + $this.fixHref(resource, href) + '" alt="' + text + '"';
    			if (title) {
    				out += ' title="' + title + '"';
    			}
    
    			out += (this.options && this.options.xhtml) ? '/>' : '>';
    			             ~~~~~~~
!!! error TS2339: Property 'options' does not exist on type 'MarkedRenderer'.
    			                             ~~~~~~~
!!! error TS2339: Property 'options' does not exist on type 'MarkedRenderer'.

ko.observable.fn['toInt'] = function() {
  return parseInt(this());
                  ~~~~~~
!!! error TS2349: Cannot invoke an expression whose type lacks a call signature. Type 'KnockoutObservableFunctions<any>' has no compatible call signatures.
}

      private setupEvents(xhr: XMLHttpRequest, request: AjaxRequest) {
        const progressSubscriber = request.progressSubscriber;
    
        xhr.ontimeout = function xhrTimeout(e) {
          const {subscriber, progressSubscriber, request } = (<any>xhrTimeout);
          if (progressSubscriber) {
            progressSubscriber.error(e);
          }
          subscriber.error(new AjaxTimeoutError(this, request)); //TODO: Make betterer.
                                                ~~~~
!!! error TS2345: Argument of type 'XMLHttpRequestEventTarget' is not assignable to parameter of type 'XMLHttpRequest'.
!!! error TS2345:   Property 'onreadystatechange' is missing in type 'XMLHttpRequestEventTarget'.
        };

export function main() {
      describe('es5 decorators', () => {
        it('should declare directive class', () => {
          var MyDirective = Directive({}).Class({constructor: function() { this.works = true; }});
                                                                                ~~~~~
!!! error TS2339: Property 'works' does not exist on type '{ constructor: () => void; }'.
          expect(new MyDirective().works).toEqual(true);
        });

    // tree benchmark in React
    import {getIntParameter, bindAction} from 'angular2/src/test_lib/benchmark_util';
    import * as React from './react.min';
    
    var TreeComponent = React.createClass({
      displayName: 'TreeComponent',
    
      render: function() {
        var treeNode = this.props.treeNode;
                            ~~~~~
!!! error TS2339: Property 'props' does not exist on type '{ displayName: string; render: () => any; }'.

const person = {
  firstName: 'First',
  lastName: 'Last',
  getName() {
    // works!
    return this.firstName + ' ' + this.lastName;
  },
  get name() {
    // 'this' implicitly has type 'any' because it does not have a type annotation.
    return this.firstName + ' ' + this.lastName;
  },
};

                    else if (type.flags & TypeFlags.TypeParameter && (type as TypeParameter).isThisType) {
                        if (inObjectTypeLiteral) {
                            writer.reportInaccessibleThisError();
                        }
                        writer.writeKeyword("this");
                    }

let foo = {
    hello: "hello",
    f() {
        return this.hello; // works
    },
    get p() {
        return this.hello; // works
    },
    g: wrap(function () {
        return this.hello; // TS2683:'this' implicitly has type 'any' because it does not have a type annotation.
    })
}

declare function wrap<T, F extends (this: T) => any>(f: F): F