angular2+webpack build error

error

 npm run build

> angular2-demo@0.0.1 build /Users/Dreampie/Projects/DreampieProjects/angular2-demo
> webpack --config build/webpack.build.config.js --progress --colors
                                                                                                                                                     10% 0/1 build modulests-loader: Using typescript@1.8.10 and /Users/Dreampie/Projects/DreampieProjects/angular2-demo/tsconfig.json                    Hash: 96ae4cbb31fa9aeb69ee                
Version: webpack 1.13.0
Child
    Hash: 96ae4cbb31fa9aeb69ee
    Version: webpack 1.13.0
    Time: 3170ms
        + 2 hidden modules
    
    ERROR in ./src/main.ts
    Module not found: Error: Cannot resolve module 'angular2/platform/browser' in /Users/Dreampie/Projects/DreampieProjects/angular2-demo/src
     @ ./src/main.ts 2:16-52
    
    ERROR in ./src/app.component.ts
    Module not found: Error: Cannot resolve module 'angular2/core' in /Users/Dreampie/Projects/DreampieProjects/angular2-demo/src
     @ ./src/app.component.ts 2:13-37
    Child html-webpack-plugin for "index.html":
            + 1 hidden modules

main.ts

import {bootstrap} from "angular2/platform/browser";
import {AppComponent} from "./app.component";

bootstrap(AppComponent);

package.json

{
  "name": "angular2-demo",
  "version": "0.0.1",
  "description": "A cms for angular2",
  "main": "dist/app",
  "scripts": {
    "clean": "rm -rf ./dist",
    "build": "webpack --config build/webpack.build.config.js --progress --colors",
    "start": "webpack-dev-server --config build/webpack.dev.config.js --progress --colors --inline"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/Dreampie/angular2-demo.git"
  },
  "keywords": [
    "angular2",
    "api",
    "cms"
  ],
  "license": "MIT",
  "author": "Dreampie",
  "bugs": {
    "url": "https://github.com/Dreampie/angular2-demo/issues"
  },
  "homepage": "https://github.com/Dreampie/angular2-demo#readme",
  "engines": {
    "node": ">= 4.2.1",
    "npm": ">= 3"
  },
  "dependencies": {
    "angular2": "^2.0.0-beta.15",
    "es6-promise": "^3.1.2",
    "es6-shim": "^0.35.0",
    "reflect-metadata": "0.1.2",
    "rxjs": "5.0.0-beta.2",
    "zone.js": "^0.6.12",
    "@angular2-material/button": "^2.0.0-alpha.3",
    "@angular2-material/card": "^2.0.0-alpha.3",
    "@angular2-material/checkbox": "^2.0.0-alpha.3",
    "@angular2-material/core": "^2.0.0-alpha.3",
    "@angular2-material/input": "^2.0.0-alpha.3",
    "@angular2-material/list": "^2.0.0-alpha.3",
    "@angular2-material/progress-circle": "^2.0.0-alpha.3",
    "@angular2-material/radio": "^2.0.0-alpha.3",
    "@angular2-material/sidenav": "^2.0.0-alpha.3",
    "@angular2-material/toolbar": "^2.0.0-alpha.3"
  },
  "devDependencies": {
    "webpack": "^1.13.0",
    "webpack-dev-server": "^1.14.1",
    "html-webpack-plugin": "^2.16.0",
    "html-loader": "^0.4.3",
    "ts-loader": "^0.8.2",
    "less": "^2.5.3",
    "less-loader": "^2.2.0",
    "url-loader": "^0.5.7",
    "file-loader": "^0.8.5",
    "typedoc": "^0.3.12",
    "typescript": "^1.8.10",
    "typings": "^0.7.12"
  }
}

webpack.build.config.js

const webpack = require("webpack");
const HtmlWebpackPlugin = require('html-webpack-plugin')
const version = require("../package.json").version;
const banner =
  "/**\n" +
  " * angular-demo v" + version + "\n" +
  " * https://github.com/Dreampie/angular2-demo\n" +
  " * Released under the MIT License.\n" +
  " */\n";

module.exports = [
  {
    devtool: 'source-map',
    entry: {
      app: "./src/main"
    },
    output: {
      publicPath: "/",
      path: "./dist",
      filename: "js/[name].min.js"
    },
    module: {
      loaders: [
        {test: /\.less/, loader: 'style!css!less'},
        {test: /\.html$/, loader: "html"},
        {test: /\.ts/, loader: 'ts'},
        {test: /\.(eot|svg|ttf)$/, loader: "file"},
        {test: /\.(woff|woff2)$/, loader: "url?limit=10000&minetype=application/font-woff"},
        {test: /\.(png|jpg|gif)$/, loader: "url"}
      ]
    },
    resolve: {
      modulesDirectories: ['node_modules'],
      extensions: ['', '.html', '.less', '.ts']
    },
    plugins: [
      new webpack.BannerPlugin(banner, {raw: true}),
      new HtmlWebpackPlugin({inject: false, template: 'src/index.html'}),
      new webpack.HotModuleReplacementPlugin(),
      new webpack.NoErrorsPlugin()
    ]
  }
];