extends ../../ts/latest/quickstart.jade block includes include _util-fns - var _Install = 'Get' - var _prereq = 'the Dart SDK' - var _angular_browser_uri = 'package:angular2/platform/browser.dart' - var _angular_core_uri = 'package:angular2/core.dart' - var _appDir = 'lib' - var _indexHtmlDir = 'web' block setup-tooling :marked Install the **[Dart SDK](https://www.dartlang.org/downloads/)**, if not already on your machine, and any tools you like to use with Dart. The Dart SDK includes **[pub][pub]**, the Dart package manager, that we will be using shortly. If you don't have a favorite Dart editor already, try [WebStorm][WS], which comes with a Dart plugin. You can also download [Dart plugins for other IDEs and editors][DT]. [WS]: https://confluence.jetbrains.com/display/WI/Getting+started+with+Dart [DT]: https://www.dartlang.org/tools [pub]: https://www.dartlang.org/tools/pub block download-source // exclude this section from Dart block package-and-config-files :marked In the project folder just created, put a file named **[pubspec.yaml][pubspec]** in it. As shown below, in `pubspec.yaml`, specify the angular2 and browser packages as dependencies, as well as the angular2 transformer. Angular 2 is still changing, so provide an exact version: **2.0.0-beta.17**. [pubspec]: https://www.dartlang.org/tools/pub/pubspec.html +makeExample('quickstart/dart/pubspec.yaml', 'no-rewriter', 'pubspec.yaml') block install-packages :marked From the project folder, run `pub get` to install the angular2 and browser packages (along with the packages they depend on). code-example(language="sh"). > pub get Resolving dependencies... block annotation-fields :marked The call to the `@Component` constructor has two named parameters, `selector` and `template`. block create-main p. Now we need something to tell Angular to load the root component. Create: ul li a #[b folder named #[code web]], and inside it li the file #[code #[+adjExPath('app/main.ts')]] with the following content: block index-html-commentary-for-ts //- N/A block run-app p. You have a few options for running your app. One is to launch a local HTTP server and then view the app in Dartium. You can use whatever server you like, such as WebStorm's server or Python's SimpleHTTPServer. p. Another option is to build and serve the app using pub serve, and then run it by visiting http://localhost:8080 in any modern browser. Pub serve generates JavaScript on the fly, which can take a while when you first visit the page. Pub serve also runs in watch mode, and will re-compile and subsequently serve and changed assets. p. Once the app is running, you should see the following in your browser window: block build-app .alert.is-important :marked If you don't see that, make sure you've entered all the code correctly, in the [proper folders](#wrap-up), and run `pub get`. .l-verbose-section h3#section-angular-run-app Building the app (generating JavaScript) :marked Before you can deploy your app, you need to generate JavaScript files. The `pub build` command makes that easy. To improve your app's performance, convert the HTML file to directly include the generated JavaScript; one way to do that is with `dart_to_js_script_rewriter`. Add the `dart_to_js_script_rewriter` package to your pubspec, in both the `dependencies` and `transformers` sections. - var stylePattern = { pnk: /(dart_to_js_script_rewriter.*$)|(- dart_to_js_script_rewriter.*$)/gm, otl: /(dependencies:)|(transformers:)/g }; +makeExample('quickstart/dart/pubspec.yaml', null, 'pubspec.yaml', stylePattern) p. Then compile your Dart code to JavaScript, using pub build. code-example(language="sh"). > pub build Loading source assets... p. The generated JavaScript appears, along with supporting files, under the build directory. p. When you generate JavaScript for an Angular app, be sure to use the Angular transformer. It analyzes your code, converting reflection-using code to static code that Dart's build tools can compile to faster, smaller JavaScript. The highlighted lines in pubspec.yaml configure the Angular transformer: - var stylePattern = { otl: /(transformers:)|(- angular2:)|(entry_points.*$)/gm }; +makeExample('quickstart/dart/pubspec.yaml', null, 'pubspec.yaml', stylePattern) p. The entry_points item identifies the Dart file in your app that has a main() function. For more information, see the Angular transformer wiki page. #performance.l-sub-section h3 Performance, the transformer, and Angular 2 libraries p. When you import bootstrap.dart, you also get dart:mirrors, a reflection library that causes performance problems when compiled to JavaScript. Don't worry, the Angular transformer converts your entry points (entry_points in pubspec.yaml) so that they don't use mirrors. block server-watching :marked Pub serve is watching and should detect the change, recompile the Dart into JavaScript, refresh the browser, and display the revised message. It's a nifty way to develop an application! Ensure that you terminate the `pub serve` process once you are done. block project-file-structure .filetree .file angular2-quickstart .children .file build ... .file lib .children .file app_component.dart .file pubspec.yaml .file web .children .file index.html .file main.ts .file styles.css block project-files +makeTabs(` quickstart/ts/app/app.component.ts, quickstart/ts/app/main.ts, quickstart/ts/index.html, quickstart/dart/pubspec.yaml, quickstart/ts/styles.1.css` ,null, `app/app.component.ts, app/main.ts, index.html, pubspec.yaml, styles.css`) block what-next-ts-overhead //- N/A