build: use webpack for building apps.

This pull request replaces the underlying broccoli build system and then
replaces it with webpack as the build and bundler.

This will affect the following commands (however the user-level)
functionality should go unchanged (besides unimplemented flags which
will come after this PR.):

ng build (with --env flag and --watch flag supported)
ng serve (with --port flag supported)
ng test / ng e2e

The webpack configuration is blackboxed, and therefore users will not
see a webpack.config.js file in their repository.

Also this PR will bump the typescript version to 2.0 (beta).

Fixes angular#909 angular#1155 angular#882

addon/ng2/blueprints/ng2/files/__path__/vendor.ts

@@ -0,0 +1,17 @@
+// Typescript emit helpers polyfill
+import 'ts-helpers';
+
+import '@angular/core';
+import '@angular/common';
+import '@angular/compiler';
+import '@angular/http';
+import '@angular/router';
+import '@angular/platform-browser';
+import '@angular/platform-browser-dynamic';
+
+<% if(isMobile) { %>
+  import '@angular/app-shell';
+<% } %>
+
+import 'rxjs/add/operator/map';
+import 'rxjs/add/operator/mergeMap';

addon/ng2/models/builder.ts

@@ -0,0 +1,161 @@
+const fs          = require('fs-extra');
+const existsSync  = require('exists-sync');
+const path        = require('path');
+const Promise     = require('ember-cli/lib/ext/promise');
+const Task        = require('ember-cli/lib/models/task');
+const SilentError = require('silent-error');
+const chalk       = require('chalk');
+const attemptNeverIndex = require('ember-cli/lib/utilities/attempt-never-index');
+const findBuildFile = require('ember-cli/lib/utilities/find-build-file');
+const viz = require('broccoli-viz');
+const FSMonitor = require('fs-monitor-stack');
+const Sync = require('tree-sync');
+const mkdirp = require('mkdirp');
+
+let resolve = null;
+let promise = new Promise((r) => resolve = r);
+
+
+
+
+var signalsTrapped = false;
+var buildCount = 0;
+
+function outputViz(count, result, monitor) {
+  var processed = viz.process(result.graph);
+
+  processed.forEach(function(node) {
+    node.stats.fs = monitor.statsFor(node);
+  });
+
+  fs.writeFileSync('graph.' + count + '.dot', viz.dot(processed));
+  fs.writeFileSync('graph.' + count + '.json', JSON.stringify({
+    summary: {
+      buildCount: count,
+      output: result.directory,
+      totalTime: result.totalTime,
+      totalNodes: processed.length,
+      stats: {
+        fs: monitor.totalStats()
+      }
+    },
+    nodes: processed
+  }));
+}
+
+module.exports = Task.extend({
+  setupBuilder: function() {
+    this.environment = this.environment || 'development';
+    process.env.ANGULAR_ENV = process.env.ANGULAR_ENV || process.env.EMBER_CLI || this.environment;
+    process.env.EMBER_ENV = process.env.ANGULAR_ENV;
+
+    var buildFile = findBuildFile('angular-cli-build.js');
+    this.tree = buildFile({ project: this.project });
+
+    if (webpack) {
+      console.log('webpack');
+    } else {
+      var broccoli = require('ember-cli-broccoli');
+      this.builder = new broccoli.Builder(this.tree);
+    }
+  },
+
+  trapSignals: function() {
+    if (!signalsTrapped) {
+      process.on('SIGINT',  this.onSIGINT.bind(this));
+      process.on('SIGTERM', this.onSIGTERM.bind(this));
+      process.on('message', this.onMessage.bind(this));
+      signalsTrapped = true;
+    }
+  },
+
+  init: function() {
+    this.setupBuilder();
+    this.trapSignals();
+  },
+
+  /**
+   Determine whether the output path is safe to delete. If the outputPath
+   appears anywhere in the parents of the project root, the build would
+   delete the project directory. In this case return `false`, otherwise
+   return `true`.
+   */
+  canDeleteOutputPath: function(outputPath) {
+    var rootPathParents = [this.project.root];
+    var dir = path.dirname(this.project.root);
+    rootPathParents.push(dir);
+    while (dir !== path.dirname(dir)) {
+      dir = path.dirname(dir);
+      rootPathParents.push(dir);
+    }
+    return rootPathParents.indexOf(outputPath) === -1;
+  },
+
+  copyToOutputPath: function(inputPath) {
+    var outputPath = this.outputPath;
+
+    mkdirp.sync(outputPath);
+
+    if (!this.canDeleteOutputPath(outputPath)) {
+      throw new SilentError('Using a build destination path of `' + outputPath + '` is not supported.');
+    }
+
+    var sync = this._sync;
+    if (sync === undefined) {
+      this._sync = sync = new Sync(inputPath, path.resolve(this.outputPath));
+    }
+
+    sync.sync();
+  },
+
+  build: function(...args: any[]) {
+    attemptNeverIndex('tmp');
+    return promise;
+    // return Promise.resolve();
+    // if (this.webpack) {
+    //   console.log(1, process.cwd());
+    //   return new Promise((resolve, reject) => {
+    //     this.webpack.run((err, stats) => {
+    //       console.log(!!err, stats);
+    //       if (err) {
+    //         reject(err);
+    //       }
+    //       resolve();
+    //     });
+    //   });
+    // }
+    // return this.builder.build(...args);
+  },
+
+  cleanup: function() {
+    var ui = this.ui;
+
+    // if (this.webpack) {
+      // this.webpack.cleanupAndExit();
+      return Promise.resolve();
+    // } else {
+    //   return this.builder.cleanup().catch(function (err) {
+    //     ui.writeLine(chalk.red('Cleanup error.'));
+    //     ui.writeError(err);
+    //   });
+    // }
+  },
+
+  cleanupAndExit: function() {
+    this.cleanup().finally(function() {
+      process.exit(1);
+    });
+  },
+
+  onSIGINT: function() {
+    this.cleanupAndExit();
+  },
+  onSIGTERM: function() {
+    this.cleanupAndExit();
+  },
+  onMessage: function(message) {
+    if (message.kill) {
+      this.cleanupAndExit();
+    }
+  }
+});