Angular2 + Typescript Demo Plunk

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <title>angular2 playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js/dist/zone.js"></script>
    <script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

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

</html>

/****************************************************/

.hiddenFileUpload {
  display: none;
}

/****************************************************/
/* This part onward is just to make my demo pretty */

body {
  font-family: "Open Sans", "Arial";
  font-size: 13px;
}

*, *::before, *::after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.btn {
  font-family: "Open Sans", "Arial";
  height: 28px;
  background-color: #1783d6;
  color: #FFFFFF;
  display: inline-block;
  padding: 3px 11px;
  margin-bottom: 4px;
  font-size: 14px;
  font-style: normal;
  font-weight: 600;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 2px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
   user-select: none;
   width: 200px;
}

.btn:hover,
.btn:focus,
.btn:active {
  background-color: #075693;
  font-style: italic;
}

input[type="text"] {
  display: inline-block;
  height: 28px;
  width: auto;
  padding: 3px 6px;
  margin-bottom: 10px;
  line-height: 1.428571429;
  color: #555555;
  vertical-align: middle;
  background-color: #ffffff;
  border: 1px solid #cccccc;
  border-radius: 2px;
  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
  -webkit-transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
  transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
}

### Angular Starter Plunker - Typescript

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',
    
    '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
    
    '@angular/core/testing': 'npm:@angular/core/bundles/core-testing.umd.js',
    '@angular/common/testing': 'npm:@angular/common/bundles/common-testing.umd.js',
    '@angular/compiler/testing': 'npm:@angular/compiler/bundles/compiler-testing.umd.js',
    '@angular/platform-browser/testing': 'npm:@angular/platform-browser/bundles/platform-browser-testing.umd.js',
    '@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic-testing.umd.js',
    '@angular/http/testing': 'npm:@angular/http/bundles/http-testing.umd.js',
    '@angular/router/testing': 'npm:@angular/router/bundles/router-testing.umd.js',
    
    'rxjs': 'npm:rxjs',
    'typescript': 'npm:typescript@2.0.2/lib/typescript.js'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

//our root app component
import {Component, NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';

declare var $: any;

@Component({
  selector: 'my-app',
  template: `
    <div>
      <div style="width: 80%; margin-bottom: 5px;">This box here has nothing to do with the question, it's just here so you can easily tab to the file upload button:</div>
      <input type="text" placeholder="click here & start tabbing">
      <br/><br/>
      <label class="btn" for="files" tabindex="0" (keypress)="onUploadLabelClick($event)">Choose a file to upload</label>
      <input class="hiddenFileUpload" type="file" id="files" (click)="upload($event)"/>
    </div>
  `,
})
export class App {
  constructor() { }
  
  onUploadLabelClick(evt): void {
    var keyCode = evt.which || evt.keyCode;
    if (keyCode === 13 || keyCode === 32) {
      $(evt.target).click();
      evt.preventDefault();
    }
  }
  
  upload() {
    console.log('upload');
  }
}

@NgModule({
  imports: [ BrowserModule ],
  declarations: [ App ],
  bootstrap: [ App ]
})
export class AppModule {}