Angular 2: exportAs

<!DOCTYPE html>
<html>

  <head>
    <title>angular2 playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://code.angularjs.org/2.0.0-beta.14/angular2-polyfills.js"></script>
    <script src="https://code.angularjs.org/tools/system.js"></script>
    <script src="https://code.angularjs.org/tools/typescript.js"></script>
    <script src="config.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.14/Rx.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.14/angular2.dev.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.14/http.dev.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app>
    loading...
    </my-app>
  </body>

</html>

/* Styles go here */

### Angular2 Starter Plunker - Typescript - Beta 0

A simple plunker demonstrating Angular2 usage:
- Uses SystemJS + TypeScript to compile on the fly
- Includes binding, directives, http, pipes, and DI usage.

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  //map tells the System loader where to look for things
  map: {
    app: "./src"
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    }
  }
});

//main entry point
import {bootstrap} from 'angular2/platform/browser';
import {App} from './app';

bootstrap(App, [])
  .catch(err => console.error(err));

import {Component, Directive, ElementRef, Renderer} from 'angular2/core'

@Directive({
  selector: "div",
  exportAs: "myDiv"
})
class MyDiv {
  
  constructor(private element: ElementRef, private renderer: Renderer) {
  }
  
  toUpper() {
    return this.renderer.setElementStyle(this.element.nativeElement, "text-transform", "uppercase");
  }
  
  toLower() {
    return this.renderer.setElementStyle(this.element.nativeElement, "text-transform", "lowercase");
  }
  
  reset() {
    return this.renderer.setElementStyle(this.element.nativeElement, "text-transform", "");
  }
}

@Component({
  selector: 'my-app',
  template: `
    <div #d="myDiv">Angular 2</div>
    <button (click)="d.toUpper()">toUpper</button>
    <button (click)="d.toLower()">toLower</button>
    <button (click)="d.reset()">Reset</button>
  `,
  directives: [MyDiv]
})
export class App {
}