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/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="config.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 - RC.0

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

For opening

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, forwardRef, Input} from '@angular/core'
import {
  FormsModule, ReactiveFormsModule,
  ControlValueAccessor, NG_VALUE_ACCESSOR,
  FormGroup, FormControl, Validators
} from '@angular/forms'
import {BrowserModule} from '@angular/platform-browser'

@Component({
  selector: 'custom-input',
  template: `
  <input type="text" [required]="required" [(ngModel)]="value" #model="ngModel"/>
  <div>inner ngModel errors: {{model.errors|json}}</div>
  `,
  providers: [{
    provide: NG_VALUE_ACCESSOR,
    useExisting: forwardRef(() => CustomInput),
    multi: true
  }]
})
export class CustomInput implements ControlValueAccessor {
    private innerValue: any = '';
    
    @Input() required: boolean;

    private onTouchedCallback = () => {};
    private onChangeCallback = (_: any) => {};

    get value(): any {
        return this.innerValue;
    };

    set value(v: any) {
        if (v !== this.innerValue) {
            this.innerValue = v;
            this.onChangeCallback(v);
        }
    }

    onBlur() { this.onTouchedCallback() }

    writeValue(value: any) {
        if (value !== this.innerValue) {
            this.innerValue = value;
        }
    }
    registerOnChange(fn: any) { this.onChangeCallback = fn }
    registerOnTouched(fn: any) { this.onTouchedCallback = fn }
}

@Component({
  selector: 'my-app',
  template: `
    <div>
      <form *ngIf="form" [formGroup]="form">
        <custom-input formControlName="item"></custom-input>
      </form>
      <div>value: {{form.value|json}}</div>
      <div>errors: {{form.errors|json}}</div>
      <div>item errors: {{form.controls.item.errors|json}}</div>
    </div>
  `,
})
export class App {
  form: FormGroup;
  
  ngOnInit(): void {
    this.form = new FormGroup({
      item: new FormControl('', Validators.required)
    });
  }
}

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