Page History

The new DSpace UI developer team decided to implement the new user interface with the  widely used Angular2 is being implemented on the widely used Angular client side framework. In addition to delivering a more responsive user experience,  client side frameworks allow for a more rapid development cycle. The UI code is built in TypeScript, a typed super set of JavaScript, that was developed specifically for the implementation of sizable web applications. In facts Angular2 fact Angular itself is developed in TypeScript.

The UI works with the DSpace REST Api API to access and modify data. RxJS facilitates It relies on RxJS  to manage control flow which is driven by the (asynchronous) communication between the two applications and the related Redux The @ngrx package helps maintain object a predictable state representation.

The new UI uses Angular Universal to render initial page requests on the server side. Thus ,  which greatly improves the initial page load time. As a nice benefit, search engines requesting pages do not have to deal with client side page rendering. Crawlers working through a list of URLs will always be presented with a page rendered on the server.

Node.js is the server technology used with JavaScript web application and thus with Angular. It serves the same purpose as Tomcat does for Java servlets  As an asynchronous event driven JavaScript runtime, Node is designed to build scalable network applications like web based user interfaces. 

Npm stands for Node Package Manager. In fact installation instruction for the user interface at GitHub essentially consist of the command 'npm install',  followed by 'npm start' to start a local server.

Typescript

• The Prototype Wiki explains the rational This wiki page explains the rationale for using typescript in ore more detail
• The Official documentation for the TypeScript language includes links to sample code, as well as a live in-browser editor/samples.

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Angular

• Official Angular2 Angular.io site -  with documentation, quick start, and API references, and a style guide
• https://github.com/angular/angular - The official codebase for Angular 2. Where to submit issues, follow the code progression, etc.
• Angular @ GitHub - code base and place to submit issues
• Getting Started Video Tutorial by Deborah Kurata
• Angular Blog -  http://angularjs.blogspot.com/ - The Angular blog, which contains updates and blog posts from the Angular team.
• Angular Forum - Google Discussion Group
• Scotch.
• https://groups.google.com/forum/#!forum/angular - Google Group for Angular 1 or 2 discussions.
• https://angularair.com/ - A live video podcast all about Angular
• io - article collection and HowTos

Other Packages

• RxJS - JavaScript implementation of ReactiveX, which describes itself as an API that combines the Observer pattern with iterators and functional programming. It facilitates the type of event/data driven programming that is common in web applications. The RxJS GitHub repo contains Resources and Links to Tutorials.; André Staltz wrote a good introduction to Reactive Programming

• @ngrx is an implementation of Redux for Angular 2. The main Redux documentation describes the general concepts. Angular 2 — Introduction to Redux is an Angular specific how to.  Getting Started with Redux is a 2h video course on egghead

• ngx-translate - supports multilingual text display

  Scotch.io has a bunch of articles on various angular 2 topics

Node.js and Npm

• node.js - official site
• npm - official site
• https://www.npmjs.com/package/npm-check-updates - A npm package for dependency management

RXJS

RxJS is used as part of angular 2 to deal with asynchronous data. A good grasp of RxJS is essential to write robust angular 2 code.

• A general introduction to Reactive Programming
• There are a bunch of resources on RxJS’ github
• Decision trees to find which operator to use when creating new sequences or using existing sequences → these are very useful during development

Universal

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Angular Universal

• Official Angular Universal Site
• Here‘s a high level document explaining itexplanation
• Universal GitHub - with documentation and a few videosThere are some videos on their github page
• William Welling has a test project to experiment with Angular Universal.

Redux

Redux is a set of design-patterns to manage state in a javascript application. 

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Additional DSpace 7 Resources

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