Angular + Typescript Demo Plunk

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <title>angular 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="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 */

### 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/animations': 'npm:@angular/animations/bundles/animations.umd.js',
    '@angular/platform-browser/animations': 'npm:@angular/platform-browser/bundles/platform-browser-animations.umd.js',
    '@angular/animations/browser': 'npm:@angular/animations/bundles/animations-browser.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@2.2.1/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, VERSION} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';

import {CompParent} from 'comp-parent.ts';
import {Comp1} from 'comp1.ts';
import {Comp2} from 'comp2.ts';

@Component({
  selector: 'my-app',
  template: `
    <div>
      <h2>Hello {{name}}</h2>
    </div>
    <app-comp-parent></app-comp-parent>
  `,
})
export class App {
  name:string;
  constructor() {
    this.name = `Angular! v${VERSION.full}`
  }
}

@NgModule({
  imports: [ BrowserModule, FormsModule ],
  declarations: [ 
    App,
    CompParent, 
    Comp1, 
    Comp2  
    ],
  bootstrap: [ App ]
})
export class AppModule {}

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-comp-parent',
  template: `
      <p>In parent: {{sharedVarParent}}
      </p>
      <app-comp1 [comp1]="sharedVarParent" (sharedVarChange)="onChange($event)"></app-comp1>
      <hr />
      <app-comp2 [comp2]="sharedVarParent" (sharedVarChange)="onChange($event)"></app-comp2>
  `,
  styles:[ `
          app-comp1, app-comp2{
            padding: 20px;
            display: inline-block;
            width: 200px;
          }
          app-comp1{background: silver;}
          app-comp2{background: grey;}
        `]
})
export class CompParent implements OnInit {
  sharedVarParent ='Initial';
  constructor() { }

  ngOnInit() {
  }
  onChange(ev){
    this.sharedVarParent = ev;
  }

}

import { Component, OnInit, Input, Output,EventEmitter } from '@angular/core';

@Component({
  selector: 'app-comp1',
  template:`
  <input type="text" id="username" placeholder="{{comp1}}" [ngModel]="comp1" (ngModelChange)="change($event)">
  <div>IN Comp1: {{comp1}}</div>
  `
})
export class Comp1 implements OnInit {
   @Input() comp1;
   @Output() sharedVarChange = new EventEmitter();
    change(newValue) {
      //console.log('newvalue', newValue)
      this.comp1 = newValue;
      this.sharedVarChange.emit(newValue);
    }
  constructor() { }

  ngOnInit() {
  }

}

import { Component, OnInit, Input, Output,EventEmitter } from '@angular/core';

@Component({
  selector: 'app-comp2',
  template:`
    <input type="text" id="username" placeholder="{{comp2}}" [ngModel]="comp2" (ngModelChange)="change($event)">
    <div>In Comp2: {{comp2}}</div>
  
  `
})
export class Comp2 implements OnInit {
  @Input() comp2;
   @Output() sharedVarChange = new EventEmitter();
    change(newValue) {
      //console.log('newvalue', newValue)
      this.comp2 = newValue;
      this.sharedVarChange.emit(newValue);
    }
  constructor() { }

  ngOnInit() {
  }

}