# Setup for upgrading from AngularJS
**Audience:** Use this guide **only** in the context of [Upgrading from AngularJS](guide/upgrade "Upgrading from AngularJS to Angular") or [Upgrading for Performance](guide/upgrade-performance "Upgrading for Performance"). Those Upgrade guides refer to this Setup guide for information about using the [deprecated QuickStart GitHub repository](https://github.com/angular/quickstart "Deprecated Angular QuickStart GitHub repository"), which was created prior to the current Angular [CLI](cli "CLI Overview"). **For all other scenarios,** see the current instructions in [Setting up the Local Environment and Workspace](guide/setup-local "Setting up for Local Development").
This guide describes how to develop locally on your own machine. Setting up a new project on your machine is quick and easy with the [QuickStart seed on github](https://github.com/angular/quickstart "Install the github QuickStart repo"). **Prerequisite:** Make sure you have [Node.jsĀ® and npm installed](guide/setup-local#prerequisites "Angular prerequisites"). {@a clone} ## Clone Perform the _clone-to-launch_ steps with these terminal commands. git clone https://github.com/angular/quickstart.git quickstart cd quickstart npm install npm start
`npm start` fails in _Bash for Windows_ in versions earlier than the Creator's Update (April 2017).
{@a download} ## Download Download the QuickStart seed and unzip it into your project folder. Then perform the remaining steps with these terminal commands. cd quickstart npm install npm start
`npm start` fails in _Bash for Windows_ in versions earlier than the Creator's Update (April 2017).
{@a non-essential} ## Delete _non-essential_ files (optional) You can quickly delete the _non-essential_ files that concern testing and QuickStart repository maintenance (***including all git-related artifacts*** such as the `.git` folder and `.gitignore`!).
Do this only in the beginning to avoid accidentally deleting your own tests and git setup!
Open a terminal window in the project folder and enter the following commands for your environment: ### OS/X (bash) xargs rm -rf < non-essential-files.osx.txt rm src/app/*.spec*.ts rm non-essential-files.osx.txt ### Windows for /f %i in (non-essential-files.txt) do del %i /F /S /Q rd .git /s /q rd e2e /s /q {@a seed} ## What's in the QuickStart seed? The **QuickStart seed** provides a basic QuickStart playground application and other files necessary for local development. Consequently, there are many files in the project folder on your machine, most of which you can [learn about later](guide/file-structure).
**Reminder:** The "QuickStart seed" example was created prior to the Angular CLI, so there are some differences between what is described here and an Angular CLI application.
{@a app-files} Focus on the following three TypeScript (`.ts`) files in the **`/src`** folder.
src
app
app.component.ts
app.module.ts
main.ts
All guides and cookbooks have _at least these core files_. Each file has a distinct purpose and evolves independently as the application grows. Files outside `src/` concern building, deploying, and testing your application. They include configuration files and external dependencies. Files inside `src/` "belong" to your application. Add new Typescript, HTML and CSS files inside the `src/` directory, most of them inside `src/app`, unless told to do otherwise. The following are all in `src/`
File Purpose
app/app.component.ts Defines the same `AppComponent` as the one in the QuickStart playground. It is the **root** component of what will become a tree of nested components as the application evolves.
app/app.module.ts Defines `AppModule`, the [root module](guide/bootstrapping "AppModule: the root module") that tells Angular how to assemble the application. When initially created, it declares only the `AppComponent`. Over time, you add more components to declare.
main.ts Compiles the application with the [JIT compiler](guide/glossary#jit) and [bootstraps](guide/bootstrapping) the application's main module (`AppModule`) to run in the browser. The JIT compiler is a reasonable choice during the development of most projects and it's the only viable choice for a sample running in a _live-coding_ environment such as Stackblitz. Alternative [compilation](guide/aot-compiler), [build](guide/build), and [deployment](guide/deployment) options are available.
## Appendix: Develop locally with IE If you develop Angular locally with `ng serve`, a `websocket` connection is set up automatically between browser and local development server, so when your code changes, the browser can automatically refresh. In Windows, by default, one application can only have 6 websocket connections, MSDN WebSocket Settings. So when IE is refreshed (manually or automatically by `ng serve`), sometimes the websocket does not close properly. When websocket connections exceed the limitations, a `SecurityError` will be thrown. This error will not affect the Angular application, you can restart IE to clear this error, or modify the windows registry to update the limitations. ## Appendix: Test using `fakeAsync()/waitForAsync()` If you use the `fakeAsync()/waitForAsync()` helper functions to run unit tests (for details, read the [Testing guide](guide/testing-components-scenarios#fake-async)), you need to import `zone.js/testing` in your test setup file.
If you create project with `Angular/CLI`, it is already imported in `src/test.ts`.
And in the earlier versions of `Angular`, the following files were imported or added in your html file: ``` import 'zone.js/plugins/long-stack-trace-zone'; import 'zone.js/plugins/proxy'; import 'zone.js/plugins/sync-test'; import 'zone.js/plugins/jasmine-patch'; import 'zone.js/plugins/async-test'; import 'zone.js/plugins/fake-async-test'; ``` You can still load those files separately, but the order is important, you must import `proxy` before `sync-test`, `async-test`, `fake-async-test` and `jasmine-patch`. And you also need to import `sync-test` before `jasmine-patch`, so it is recommended to just import `zone-testing` instead of loading those separated files.